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LICENSE
Copyright (c) 2011-2013 Ole Petter Bang <olepbang@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Raw
RACTalk.html
<!DOCTYPE html>
<html>
<head>
<title>Title</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<style type="text/css">
body { font-family: 'Helvetica Neue'; }
h1, h2, h3 {
font-family: 'Helvetica Neue';
font-weight: normal;
}
.remark-code, .remark-inline-code {
font-family: 'Monaco';
font-size: 75%;
}
/* Two-column layout */
.left-column {
width: 45%;
float: left;
}
.right-column {
width: 45%;
float: right;
}
</style>
</head>
<body>
<textarea id="source">
class: center, middle
# ReactiveCocoa basics
???
Hi.
Who knows about RAC?
***
Hi my name is Uri, I'm a software engineer at Facebook and I'm here to talk about ReactiveCocoa.
How many of you know roughly what RAC is about? Good, pretend you don't. Everyone else can skip this
step.
Pretend we don't know anything about it and we just happened to find it on github.
---
class: center, middle
ReactiveCocoa (RAC) is an Objective-C framework
inspired by Functional Reactive Programming.
It provides APIs for composing and transforming streams of values.
???
Easy.
Stop me and ask questions.
***
Here is what RAC's Readme file has to say about itself (by itself I mean the project, not the file):
1. it's an Objective-C framework. It's something we can use in our code. It's not as cool as swift,
but it'll do.
2. it's inspired by functional reactive programming. No idea what that is, but if it's not
Functional no one is going to use it. That's how fashionable "functional" is.
3. It provides APIs for composing and transforming streams of values. Aha! An intuition! So it's yet
another library that gives you map and filter and so on.
If you're expecting me to go "Oh no it's so much more!" you're going to be disappointed.
That's pretty much what it is. I know, it's kinda underwhelming. But look on the bright side: we
have an idea of what streams are, we have an idea of what one can do with them.
If what I'm going to explain sounds easy, it's because it is. If it doesn't, it's because I'm really
bad at explaining and you should stop me and ask questions.
---
# Topics:
1. Streams
2. Events
3. Event streams
4. Tranformations
5. Compositions
???
***
Ok, here we go.
We're going to go over the ground concepts used in RAC: streams, events, event streams,
tranformations of event streams, then we're going to have a break for questions just to make sure
everything up until then is perfectly clear, and we'll finish with compositions of event streams.
---
# Streams
.center[
Sequence of data elements
Potentially infinite
Potentially over time
]
???
First building block of RAC
***
The first concept of RAC is the stream.
The elements of a stream can be any kind of data. You can have streams of numbers, strings, bytes,
objects, anything. In RAC the elements of the streams have to be passed around to blocks a lot so in
the interest of simplicity they're always objects. If you want to pass non-object elements you have
to box them.
The stream themselves are sequences. That means the elements within them are ordered, and they can
contain duplicates.
Streams are potentially infinite. Some streams end, some don't. The number of elements them can also
be infinite. Note the difference: you can have a stream that has a couple of elements, or even no
elements, that is still infinite.
The elements of the stream can be distributed over time. The stream can have a time when it begins,
and if it's not infinite, a time when it ends. Elements are spread out between the two. Note that
some streams are "timeless". That's not true for the strictest definition of stream, but as far as
RAC is concerned they exist.
---
# NSArray
```objc
@[ @0, @1, @2, @3 ]
```
???
Ordered, duplicates, finite, timeless.
***
Simplest example of a stream: it's not infinite, it's not really over time either since iterating
over it is almost instant.
---
# NSEnumerator
```objc
@interface NSEnumerator : NSObject <NSFastEnumeration>
- (id)nextObject;
@end
```
???
Infinite, maybe timeless?
***
A bit more general example of a stream: it's potentially infinite. You won't know if there is
another element in the stream until you call next object. Each call might take different amounts of
time to execute.
---
# NSStream
```objc
@interface NSStream : NSObject
// ...
@property (readonly) NSStreamStatus streamStatus;
@property (readonly, copy) NSError *streamError;
@end
@interface NSInputStream : NSStream
- (NSInteger)read:(uint8_t *)buffer maxLength:(NSUInteger)len;
// ...
@end
```
???
Infinite, timeful.
***
Even more general example of a stream. The interface is a lot more complicated, but if we squint at
it we can see the similarity: you call a read method, you want an indeterminate amount of time, you
get some data back, or no data back, and you can look at streamStatus if the stream is completed or
if an error has happened.
---
# Events
.center[
Occurrence
]
???
Something that can happen at a certain time.
***
The second concept of RAC are events. An event is something that can happen at a certain time.
Sometimes events have some data associated with them, for example a pointer event could have the
pointer's coordinates attached to it.
This sounds awefully vague so let's see some examples we're familiar with.
---
# Delegates
```objc
@protocol UIApplicationDelegate<NSObject>
- (void)applicationDidFinishLaunching:(UIApplication *)application;
// ...
@end
```
???
First example: delegate methods.
***
The first example is delegate methods. Most of us are familiar with this particular one. It's a way
for your application code to be notified of when something happens. In this case, when iOS has
finished launching the application.
Note that Apple frameworks mix the idea of delegates and observers, which are two completely
different things: observers are objects that want to get notified when things happen. Delegates are
objects that want to make decisions in the delegator's place. Only the first of the two deals with
events.
In general the "will" and "did" methods are for observers, the "should" methods are for delegates.
---
# Callbacks
```objc
@interface UIDocument : NSObject <NSFilePresenter> {
// ...
- (void)openWithCompletionHandler:(void (^)(BOOL success))completionHandler;
// ...
@end
```
???
Second example: callbacks.
---
# Event streams
.center[
Streams of events
]
---
# NSEnumerator | Delegate
.left-column[
```objc
id value = [enumerator nextObject];
// value != nil
```
```objc
id value = [enumerator nextObject];
// value == nil
```
```objc
bytes = [stream read:&amp;buffer
maxLength:len];
if (bytes == 0
&amp;&amp; stream.streamStatus ==
NSStreamStatusError) {
error = stream.streamError;
}
```
]
.right-column[
```objc
id value = ...;
[delegate didReceiveNext:value];
```
```objc
[delegate didReceiveCompleted];
```
```objc
[delegate didReceiveError:error];
```
]
---
# NSEnumerator | Delegate
.left-column[
```objc
NSArray *array =
...;
NSEnumerator *enumerator =
array.objectEnumerator;
```
]
.right-column[
```objc
NSArray *array =
...;
[array
enumerateWithDelegate:delegate];
```
]
---
# NSEnumerator | RAC
.left-column[
```objc
id value = [enumerator nextObject];
// value != nil
```
```objc
id value = [enumerator nextObject];
// value == nil
```
```objc
bytes = [stream read:&amp;buffer
maxLength:len];
if (bytes == 0
&amp;&amp; stream.streamStatus ==
NSStreamStatusError) {
error = stream.streamError;
}
```
]
.right-column[
```objc
id value = ...;
[subscriber sendNext:value];
```
```objc
[subscriber sendCompleted];
```
```objc
[subscriber sendError:error];
```
]
---
# NSEnumerator | RAC
.left-column[
```objc
NSArray *array =
...;
NSEnumerator *enumerator =
array.objectEnumerator;
```
]
.right-column[
```objc
RACSignal *signal =
...;
[signal
subscribe:subscriber];
```
]
---
class: center, middle
# Transformations
---
# Map
```objc
RACSignal *signal = @[@"a", @"b", @"c"].rac_signal;
signal = [signal map:^(NSString *value){
return value.uppercaseString;
}];
[signal subscribeNext:^(NSString *value) {
NSLog(value);
}];
// A, B, C
```
---
# Filter
```objc
RACSignal *signal = @[@0, @1, @2, @3].rac_signal;
signal = [signal filter:^(NSNumber *value){
return (BOOL)(value.integerValue % 2 == 0);
}];
[signal subscribeNext:^(NSNumber *value) {
NSLog(value);
}];
// 0, 2
```
---
# Skip
```objc
RACSignal *signal = daysOfTheWeek.rac_signal;
// Mon, Tue, Wed, Thu, Fri, Sat, Sun
signal = [signal skip:4];
// Fri, Sat, Sun
```
---
# Take
```objc
signal = Mon Tue Wed Thu Fri Sat Sun
[signal take:4] = Mon Tue Wed Thu
```
---
# Repeat
```objc
signal = 1 2 3
[signal repeat] = 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3
```
---
# Delay
```objc
signal = 1 . 2 . 3
[signal delay:2.0] = . . 1 . 2 . 3
```
---
# Throttle
```objc
signal = 1 2 3 . . 4 . 5
[signal throttle:2.0] = . . 3 . . . 5
```
---
class: center, middle
# Compositions
---
# Zip
```objc
a = 1 2 . . . 3
b = 9 . . 8 7 6 5 4
[a zipWith:b] = 1 2 3
. . .
9 8 7
```
---
# Combine latest
```objc
a = 1 2 . . . 3
b = 9 . . 8 7 6 5 4
[a combineLatestWith:b] = 1 2 2 2 2 2 2 3
. . .
9 9 8 7 6 5 4 4
```
---
# Concat
```objc
a = 1 2 . . . 3
b = 9 . . 8 7 6 5 4
c = . . a . b
[c concat] = . . 1 2 . . . 3 9 . . 8 7 6 5 4
```
---
# Flatten
```objc
a = 1 2 . . . 3
b = 9 . . 8 7 6 5 4
c = . . a . b
[c flatten] = . . 1 2 . 9 . . 3 8 7 6 5 4
```
---
# Switch
```objc
a = 1 2 . . . 3
b = 9 . . 8 7 6 5 4
c = . . a . b
[c switchToLatest] = . . 1 2 . 9 . . 8 7 6 5 4
```
---
class: center, middle
# Thank you
coneko@fb.com
???
So we've seen the basic concepts that underly RAC, and we've seen the simpler operators for
transforming and composing signals.
Some of you will be surprised that this is the last slide of the talk. Others will have noticed the
counter in the bottom right corner. They are not surprised.
Maybe both groups of people are thinking "So what am I supposed to use this RAC thing for anyway?
This talk didn't tell me anything about that.".
Since I'm not a psychic I won't attempt to guess what you are thinking, I'll just answer your
questions as you ask them.
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Raw
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black;position:absolute;display:none;}.remark-code{font-size:18px;}.remark-code-line{min-height:1em;}.remark-code-line-highlighted{background-color:rgba(255, 255, 0, 0.5);}.remark-code-span-highlighted{background-color:rgba(255, 255, 0, 0.5);padding:1px 2px 2px 2px;}.remark-visible{display:block;z-index:2;}.remark-fading{display:block;z-index:1;}.remark-fading .remark-slide-scaler{-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none;}.remark-backdrop{position:absolute;top:0;bottom:0;left:0;right:0;display:none;background:#000;z-index:2;}.remark-pause{bottom:0;top:0;right:0;left:0;display:none;position:absolute;z-index:1000;}.remark-pause .remark-pause-lozenge{margin-top:30%;text-align:center;}.remark-pause .remark-pause-lozenge span{color:white;background:black;border:2px solid black;border-radius:20px;padding:20px 30px;font-family:Helvetica,arial,freesans,clean,sans-serif;font-size:42pt;font-weight:bold;}.remark-container.remark-presenter-mode.remark-pause-mode .remark-pause{display:block;}.remark-container.remark-presenter-mode.remark-pause-mode .remark-backdrop{display:block;opacity:0.5;}.remark-help{bottom:0;top:0;right:0;left:0;display:none;position:absolute;z-index:1000;-webkit-transform-origin:top left;-moz-transform-origin:top left;transform-origin:top-left;}.remark-help .remark-help-content{color:white;font-family:Helvetica,arial,freesans,clean,sans-serif;font-size:12pt;position:absolute;top:5%;bottom:10%;height:10%;left:5%;width:90%;}.remark-help .remark-help-content h1{font-size:36px;}.remark-help .remark-help-content td{color:white;font-size:12pt;padding:10px;}.remark-help .remark-help-content td:first-child{padding-left:0;}.remark-help .remark-help-content .key{background:white;color:black;min-width:1em;display:inline-block;padding:3px 6px;text-align:center;border-radius:4px;font-size:14px;}.remark-help .dismiss{top:85%;}.remark-container.remark-help-mode .remark-help{display:block;}.remark-container.remark-help-mode .remark-backdrop{display:block;opacity:0.95;}.remark-preview-area{bottom:2%;left:2%;display:none;opacity:0.5;position:absolute;height:47.25%;width:48%;}.remark-preview-area .remark-slide-container{display:block;}.remark-notes-area{background:#e7e8e2;bottom:0;display:none;left:52%;overflow:hidden;position:absolute;right:0;top:0;}.remark-notes-area .remark-top-area{height:50px;left:20px;position:absolute;right:10px;top:10px;}.remark-notes-area .remark-bottom-area{position:absolute;top:75px;bottom:10px;left:20px;right:10px;}.remark-notes-area .remark-bottom-area .remark-toggle{display:block;text-decoration:none;font-family:Helvetica,arial,freesans,clean,sans-serif;border-bottom:1px solid #ccc;height:21px;font-size:0.75em;font-weight:bold;text-transform:uppercase;color:#666;text-shadow:#f5f5f5 1px 1px 1px;}.remark-notes-area .remark-bottom-area .remark-notes-current-area{height:70%;position:relative;}.remark-notes-area .remark-bottom-area .remark-notes-current-area .remark-notes{clear:both;border-top:1px solid #f5f5f5;position:absolute;top:22px;bottom:0px;left:0px;right:0px;overflow-y:auto;margin-bottom:20px;}.remark-notes-area .remark-bottom-area .remark-notes-preview-area{height:30%;position:relative;}.remark-notes-area .remark-bottom-area .remark-notes-preview-area .remark-notes-preview{border-top:1px solid #f5f5f5;position:absolute;top:22px;bottom:0px;left:0px;right:0px;overflow-y:auto;}.remark-notes-area .remark-bottom-area .remark-notes>*:first-child,.remark-notes-area .remark-bottom-area .remark-notes-preview>*:first-child{margin-top:5px;}.remark-notes-area .remark-bottom-area .remark-notes>*:last-child,.remark-notes-area .remark-bottom-area .remark-notes-preview>*:last-child{margin-bottom:0;}.remark-toolbar{color:#979892;vertical-align:middle;}.remark-toolbar .remark-toolbar-link{border:2px solid #d7d8d2;color:#979892;display:inline-block;padding:2px 2px;text-decoration:none;text-align:center;min-width:20px;}.remark-toolbar .remark-toolbar-link:hover{border-color:#979892;color:#676862;}.remark-toolbar .remark-toolbar-timer{border:2px solid black;border-radius:10px;background:black;color:white;display:inline-block;float:right;padding:5px 10px;font-family:sans-serif;font-weight:bold;font-size:175%;text-decoration:none;text-align:center;}.remark-container.remark-presenter-mode .remark-slides-area{top:2%;left:2%;height:47.25%;width:48%;}.remark-container.remark-presenter-mode .remark-preview-area{display:block;}.remark-container.remark-presenter-mode .remark-notes-area{display:block;}.remark-container.remark-blackout-mode:not(.remark-presenter-mode) .remark-backdrop{display:block;opacity:0.99;}.remark-container.remark-mirrored-mode:not(.remark-presenter-mode) .remark-slides-area{-webkit-transform:scaleX(-1);-moz-transform:scaleX(-1);-ms-transform:scaleX(-1);-o-transform:scaleX(-1);}@media print{.remark-container{overflow:visible;background-color:#fff;} .remark-container.remark-presenter-mode .remark-slides-area{top:0px;left:0px;height:100%;width:681px;} .remark-container.remark-presenter-mode .remark-preview-area,.remark-container.remark-presenter-mode .remark-notes-area{display:none;} .remark-container.remark-presenter-mode .remark-slide-notes{display:block;margin-left:30px;width:621px;} .remark-slide-container{display:block;position:relative;} .remark-slide-scaler{-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none;}}@page {margin:0;}",containerLayout:'<div class="remark-notes-area">\n <div class="remark-top-area">\n <div class="remark-toolbar">\n <a class="remark-toolbar-link" href="#increase">+</a>\n <a class="remark-toolbar-link" href="#decrease">-</a>\n <span class="remark-toolbar-timer"></span>\n </div>\n </div>\n <div class="remark-bottom-area">\n <div class="remark-notes-current-area">\n <div class="remark-toggle">Notes for current slide</div>\n <div class="remark-notes"></div>\n </div>\n <div class="remark-notes-preview-area">\n <div class="remark-toggle">Notes for next slide</div>\n <div class="remark-notes-preview"></div>\n </div>\n </div>\n</div>\n<div class="remark-slides-area"></div>\n<div class="remark-preview-area"></div>\n<div class="remark-backdrop"></div>\n<div class="remark-pause">\n <div class="remark-pause-lozenge">\n <span>Paused</span>\n </div>\n</div>\n<div class="remark-help">\n <div class="remark-help-content">\n <h1>Help</h1>\n <p><b>Keyboard shortcuts</b></p>\n <table class="light-keys">\n <tr>\n <td>\n <span class="key"><b>&uarr;</b></span>,\n <span class="key"><b>&larr;</b></span>,\n <span class="key">Pg Up</span>,\n <span class="key">k</span>\n </td>\n <td>Go to previous slide</td>\n </tr>\n <tr>\n <td>\n <span class="key"><b>&darr;</b></span>,\n <span class="key"><b>&rarr;</b></span>,\n <span class="key">Pg Dn</span>,\n <span class="key">Space</span>,\n <span class="key">j</span>\n </td>\n <td>Go to next slide</td>\n </tr>\n <tr>\n <td>\n <span class="key">Home</span>\n </td>\n <td>Go to first slide</td>\n </tr>\n <tr>\n <td>\n <span class="key">End</span>\n </td>\n <td>Go to last slide</td>\n </tr>\n <tr>\n <td>\n <span class="key">b</span>&nbsp;/\n <span class="key">m</span>&nbsp;/\n <span class="key">f</span>\n </td>\n <td>Toggle blackout / mirrored / fullscreen mode</td>\n </tr>\n <tr>\n <td>\n <span class="key">c</span>\n </td>\n <td>Clone slideshow</td>\n </tr>\n <tr>\n <td>\n <span class="key">p</span>\n </td>\n <td>Toggle presenter mode</td>\n </tr>\n <tr>\n <td>\n <span class="key">t</span>\n </td>\n <td>Restart the presentation timer</td>\n </tr>\n <tr>\n <td>\n <span class="key">?</span>,\n <span class="key">h</span>\n </td>\n <td>Toggle this help</td>\n </tr>\n </table>\n </div>\n <div class="content dismiss">\n <table class="light-keys">\n <tr>\n <td>\n <span class="key">Esc</span>\n </td>\n <td>Back to slideshow</td>\n </tr>\n </table>\n </div>\n</div>\n'}},{}],7:[function(require,module,exports){!function(){var hljs=new function(){function escape(value){return value.replace(/&/gm,"&amp;").replace(/</gm,"&lt;").replace(/>/gm,"&gt;")}function tag(node){return node.nodeName.toLowerCase()}function testRe(re,lexeme){var match=re&&re.exec(lexeme);return match&&match.index==0}function blockLanguage(block){var classes=(block.className+" "+(block.parentNode?block.parentNode.className:"")).split(/\s+/);classes=classes.map(function(c){return c.replace(/^lang(uage)?-/,"")});return classes.filter(function(c){return getLanguage(c)||c=="no-highlight"})[0]}function inherit(parent,obj){var result={};for(var key in parent)result[key]=parent[key];if(obj)for(var key in obj)result[key]=obj[key];return result}function nodeStream(node){var result=[];!function _nodeStream(node,offset){for(var child=node.firstChild;child;child=child.nextSibling){if(child.nodeType==3)offset+=child.nodeValue.length;else if(tag(child)=="br")offset+=1;else if(child.nodeType==1){result.push({event:"start",offset:offset,node:child});offset=_nodeStream(child,offset);result.push({event:"stop",offset:offset,node:child})}}return offset}(node,0);return result}function mergeStreams(original,highlighted,value){var processed=0;var result="";var nodeStack=[];function selectStream(){if(!original.length||!highlighted.length){return original.length?original:highlighted}if(original[0].offset!=highlighted[0].offset){return original[0].offset<highlighted[0].offset?original:highlighted}return highlighted[0].event=="start"?original:highlighted}function open(node){function attr_str(a){return" "+a.nodeName+'="'+escape(a.value)+'"'}result+="<"+tag(node)+Array.prototype.map.call(node.attributes,attr_str).join("")+">"}function close(node){result+="</"+tag(node)+">"}function render(event){(event.event=="start"?open:close)(event.node)}while(original.length||highlighted.length){var stream=selectStream();result+=escape(value.substr(processed,stream[0].offset-processed));processed=stream[0].offset;if(stream==original){nodeStack.reverse().forEach(close);do{render(stream.splice(0,1)[0]);stream=selectStream()}while(stream==original&&stream.length&&stream[0].offset==processed);nodeStack.reverse().forEach(open)}else{if(stream[0].event=="start"){nodeStack.push(stream[0].node)}else{nodeStack.pop()}render(stream.splice(0,1)[0])}}return result+escape(value.substr(processed))}function compileLanguage(language){function reStr(re){return re&&re.source||re}function langRe(value,global){return RegExp(reStr(value),"m"+(language.case_insensitive?"i":"")+(global?"g":""))}function compileMode(mode,parent){if(mode.compiled)return;mode.compiled=true;mode.keywords=mode.keywords||mode.beginKeywords;if(mode.keywords){var compiled_keywords={};function flatten(className,str){if(language.case_insensitive){str=str.toLowerCase()}str.split(" ").forEach(function(kw){var pair=kw.split("|");compiled_keywords[pair[0]]=[className,pair[1]?Number(pair[1]):1]})}if(typeof mode.keywords=="string"){flatten("keyword",mode.keywords)}else{Object.keys(mode.keywords).forEach(function(className){flatten(className,mode.keywords[className])})}mode.keywords=compiled_keywords}mode.lexemesRe=langRe(mode.lexemes||/\b[A-Za-z0-9_]+\b/,true);if(parent){if(mode.beginKeywords){mode.begin="\\b("+mode.beginKeywords.split(" ").join("|")+")\\b"}if(!mode.begin)mode.begin=/\B|\b/;mode.beginRe=langRe(mode.begin);if(!mode.end&&!mode.endsWithParent)mode.end=/\B|\b/;if(mode.end)mode.endRe=langRe(mode.end);mode.terminator_end=reStr(mode.end)||"";if(mode.endsWithParent&&parent.terminator_end)mode.terminator_end+=(mode.end?"|":"")+parent.terminator_end}if(mode.illegal)mode.illegalRe=langRe(mode.illegal);if(mode.relevance===undefined)mode.relevance=1;if(!mode.contains){mode.contains=[]}var expanded_contains=[];mode.contains.forEach(function(c){if(c.variants){c.variants.forEach(function(v){expanded_contains.push(inherit(c,v))})}else{expanded_contains.push(c=="self"?mode:c)}});mode.contains=expanded_contains;mode.contains.forEach(function(c){compileMode(c,mode)});if(mode.starts){compileMode(mode.starts,parent)}var terminators=mode.contains.map(function(c){return c.beginKeywords?"\\.?("+c.begin+")\\.?":c.begin}).concat([mode.terminator_end,mode.illegal]).map(reStr).filter(Boolean);mode.terminators=terminators.length?langRe(terminators.join("|"),true):{exec:function(s){return null}};mode.continuation={}}compileMode(language)}function highlight(name,value,ignore_illegals,continuation){function subMode(lexeme,mode){for(var i=0;i<mode.contains.length;i++){if(testRe(mode.contains[i].beginRe,lexeme)){return mode.contains[i]}}}function endOfMode(mode,lexeme){if(testRe(mode.endRe,lexeme)){return mode}if(mode.endsWithParent){return endOfMode(mode.parent,lexeme)}}function isIllegal(lexeme,mode){return!ignore_illegals&&testRe(mode.illegalRe,lexeme)}function keywordMatch(mode,match){var match_str=language.case_insensitive?match[0].toLowerCase():match[0];return mode.keywords.hasOwnProperty(match_str)&&mode.keywords[match_str]}function buildSpan(classname,insideSpan,leaveOpen,noPrefix){var classPrefix=noPrefix?"":options.classPrefix,openSpan='<span class="'+classPrefix,closeSpan=leaveOpen?"":"</span>";openSpan+=classname+'">';return openSpan+insideSpan+closeSpan}function processKeywords(){if(!top.keywords)return escape(mode_buffer);var result="";var last_index=0;top.lexemesRe.lastIndex=0;var match=top.lexemesRe.exec(mode_buffer);while(match){result+=escape(mode_buffer.substr(last_index,match.index-last_index));var keyword_match=keywordMatch(top,match);if(keyword_match){relevance+=keyword_match[1];result+=buildSpan(keyword_match[0],escape(match[0]))}else{result+=escape(match[0])}last_index=top.lexemesRe.lastIndex;match=top.lexemesRe.exec(mode_buffer)}return 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'+"You need to define macro using remark.macros['"+token.name+"'] = function () { ... };")}var value=macro.apply(token.obj,token.args);if(typeof value==="string"){value=self.parse(value,macros);appendTo(stack[stack.length-1],value[0].content[0])}else{appendTo(stack[stack.length-1],value===undefined?"":value.toString())}break;case"content_start":stack.push(createContentClass(token));break;case"content_end":appendTo(stack[stack.length-2],stack[stack.length-1]);stack.pop();break;case"separator":slides.push(stack[0]);stack=[createSlide()];stack[0].properties.continued=(token.text==="--").toString();break;case"notes_separator":stack[0].notes=[];break}});slides.push(stack[0]);slides.forEach(function(slide){slide.content[0]=extractProperties(slide.content[0]||"",slide.properties)});return slides.filter(function(slide){var exclude=(slide.properties.exclude||"").toLowerCase();if(exclude==="true"){return false}return true})};function createSlide(){return{content:[],properties:{continued:"false"},links:{}}}function createContentClass(token){return{"class":token.classes.join(" "),block:token.block,content:[]}}function appendTo(element,content){var target=element.content;if(element.notes!==undefined){target=element.notes}var lastIdx=target.length-1;if(typeof target[lastIdx]==="string"&&typeof content==="string"){target[lastIdx]+=content}else{target.push(content)}}function extractProperties(source,properties){var propertyFinder=/^\n*([-\w]+):([^$\n]*)/i,match;while((match=propertyFinder.exec(source))!==null){source=source.substr(0,match.index)+source.substr(match.index+match[0].length);properties[match[1].trim()]=match[2].trim();propertyFinder.lastIndex=match.index}return source}function cleanInput(source){var getMatchCaptures=function(source,pattern){var results=[],match;while((match=pattern.exec(source))!==null)results.push(match[1]);return results};var leadingWhitespacePattern=/^([ \t]*)[^ \t\n]/gm;var whitespace=getMatchCaptures(source,leadingWhitespacePattern).map(function(s){return s.length});var minWhitespace=Math.min.apply(Math,whitespace);var trimWhitespacePattern=new RegExp("^[ \\t]{0,"+minWhitespace+"}","gm");return source.replace(trimWhitespacePattern,"")}}()},{"./lexer":16}],13:[function(require,module,exports){var SlideView=require("./slideView"),Timer=require("components/timer"),NotesView=require("./notesView"),Scaler=require("../scaler"),resources=require("../resources"),utils=require("../utils"),printing=require("components/printing");module.exports=SlideshowView;function SlideshowView(events,dom,containerElement,slideshow){var self=this;self.events=events;self.dom=dom;self.slideshow=slideshow;self.scaler=new Scaler(events,slideshow);self.slideViews=[];self.configureContainerElement(containerElement);self.configureChildElements();self.updateDimensions();self.scaleElements();self.updateSlideViews();self.timer=new Timer(events,self.timerElement);events.on("slidesChanged",function(){self.updateSlideViews()});events.on("hideSlide",function(slideIndex){self.elementArea.getElementsByClassName("remark-fading").forEach(function(slide){utils.removeClass(slide,"remark-fading")});self.hideSlide(slideIndex)});events.on("showSlide",function(slideIndex){self.showSlide(slideIndex)});events.on("forcePresenterMode",function(){if(!utils.hasClass(self.containerElement,"remark-presenter-mode")){utils.toggleClass(self.containerElement,"remark-presenter-mode");self.scaleElements();printing.setPageOrientation("landscape")}});events.on("togglePresenterMode",function(){utils.toggleClass(self.containerElement,"remark-presenter-mode");self.scaleElements();if(utils.hasClass(self.containerElement,"remark-presenter-mode")){printing.setPageOrientation("portrait")}else{printing.setPageOrientation("landscape")}});events.on("toggleHelp",function(){utils.toggleClass(self.containerElement,"remark-help-mode")});events.on("toggleBlackout",function(){utils.toggleClass(self.containerElement,"remark-blackout-mode")});events.on("toggleMirrored",function(){utils.toggleClass(self.containerElement,"remark-mirrored-mode")});events.on("hideOverlay",function(){utils.removeClass(self.containerElement,"remark-blackout-mode");utils.removeClass(self.containerElement,"remark-help-mode")});events.on("pause",function(){utils.toggleClass(self.containerElement,"remark-pause-mode")});events.on("resume",function(){utils.toggleClass(self.containerElement,"remark-pause-mode")});handleFullscreen(self)}function handleFullscreen(self){var requestFullscreen=utils.getPrefixedProperty(self.containerElement,"requestFullScreen"),cancelFullscreen=utils.getPrefixedProperty(document,"cancelFullScreen");self.events.on("toggleFullscreen",function(){var fullscreenElement=utils.getPrefixedProperty(document,"fullscreenElement")||utils.getPrefixedProperty(document,"fullScreenElement");if(!fullscreenElement&&requestFullscreen){requestFullscreen.call(self.containerElement,Element.ALLOW_KEYBOARD_INPUT)}else if(cancelFullscreen){cancelFullscreen.call(document)}self.scaleElements()})}SlideshowView.prototype.isEmbedded=function(){return this.containerElement!==this.dom.getBodyElement()};SlideshowView.prototype.configureContainerElement=function(element){var self=this;self.containerElement=element;utils.addClass(element,"remark-container");if(element===self.dom.getBodyElement()){utils.addClass(self.dom.getHTMLElement(),"remark-container");forwardEvents(self.events,window,["hashchange","resize","keydown","keypress","mousewheel","message","DOMMouseScroll"]);forwardEvents(self.events,self.containerElement,["touchstart","touchmove","touchend","click","contextmenu"])}else{element.style.position="absolute";element.tabIndex=-1;forwardEvents(self.events,window,["resize"]);forwardEvents(self.events,element,["keydown","keypress","mousewheel","touchstart","touchmove","touchend"])}self.events.on("tap",function(endX){if(endX<self.getContainerWidth()/2){self.slideshow.gotoPreviousSlide()}else{self.slideshow.gotoNextSlide()}})};function forwardEvents(target,source,events){events.forEach(function(eventName){source.addEventListener(eventName,function(){var args=Array.prototype.slice.call(arguments);target.emit.apply(target,[eventName].concat(args))})})}SlideshowView.prototype.configureChildElements=function(){var self=this;self.containerElement.innerHTML+=resources.containerLayout;self.elementArea=self.containerElement.getElementsByClassName("remark-slides-area")[0];self.previewArea=self.containerElement.getElementsByClassName("remark-preview-area")[0];self.notesArea=self.containerElement.getElementsByClassName("remark-notes-area")[0];self.notesView=new NotesView(self.events,self.notesArea,function(){return self.slideViews});self.backdropElement=self.containerElement.getElementsByClassName("remark-backdrop")[0];self.helpElement=self.containerElement.getElementsByClassName("remark-help")[0];self.timerElement=self.notesArea.getElementsByClassName("remark-toolbar-timer")[0];self.pauseElement=self.containerElement.getElementsByClassName("remark-pause")[0];self.events.on("propertiesChanged",function(changes){if(changes.hasOwnProperty("ratio")){self.updateDimensions()}});self.events.on("resize",onResize);printing.init();printing.on("print",onPrint);function onResize(){self.scaleElements()}function onPrint(e){var slideHeight;if(e.isPortrait){slideHeight=e.pageHeight*.4}else{slideHeight=e.pageHeight}self.slideViews.forEach(function(slideView){slideView.scale({clientWidth:e.pageWidth,clientHeight:slideHeight});if(e.isPortrait){slideView.scalingElement.style.top="20px";slideView.notesElement.style.top=slideHeight+40+"px"}})}};SlideshowView.prototype.updateSlideViews=function(){var self=this;self.slideViews.forEach(function(slideView){self.elementArea.removeChild(slideView.containerElement)});self.slideViews=self.slideshow.getSlides().map(function(slide){return new SlideView(self.events,self.slideshow,self.scaler,slide)});self.slideViews.forEach(function(slideView){self.elementArea.appendChild(slideView.containerElement)});self.updateDimensions();if(self.slideshow.getCurrentSlideIndex()>-1){self.showSlide(self.slideshow.getCurrentSlideIndex())}};SlideshowView.prototype.scaleSlideBackgroundImages=function(dimensions){var self=this;self.slideViews.forEach(function(slideView){slideView.scaleBackgroundImage(dimensions)})};SlideshowView.prototype.showSlide=function(slideIndex){var self=this,slideView=self.slideViews[slideIndex],nextSlideView=self.slideViews[slideIndex+1];self.events.emit("beforeShowSlide",slideIndex);slideView.show();if(nextSlideView){self.previewArea.innerHTML=nextSlideView.containerElement.outerHTML}else{self.previewArea.innerHTML=""}self.events.emit("afterShowSlide",slideIndex)};SlideshowView.prototype.hideSlide=function(slideIndex){var self=this,slideView=self.slideViews[slideIndex];self.events.emit("beforeHideSlide",slideIndex);slideView.hide();self.events.emit("afterHideSlide",slideIndex)};SlideshowView.prototype.updateDimensions=function(){var self=this,dimensions=self.scaler.dimensions;self.helpElement.style.width=dimensions.width+"px";self.helpElement.style.height=dimensions.height+"px";self.scaleSlideBackgroundImages(dimensions);self.scaleElements()};SlideshowView.prototype.scaleElements=function(){var self=this;self.slideViews.forEach(function(slideView){slideView.scale(self.elementArea)});if(self.previewArea.children.length){self.scaler.scaleToFit(self.previewArea.children[0].children[0],self.previewArea)}self.scaler.scaleToFit(self.helpElement,self.containerElement);self.scaler.scaleToFit(self.pauseElement,self.containerElement)}},{"components/timer":"yAcg0L","components/printing":"nZr0zp","./slideView":17,"./notesView":18,"../resources":6,"../utils":8,"../scaler":19}],14:[function(require,module,exports){var Navigation=require("./slideshow/navigation"),Events=require("./slideshow/events"),utils=require("../utils"),Slide=require("./slide"),Parser=require("../parser"),macros=require("../macros");module.exports=Slideshow;function Slideshow(events,options){var self=this,slides=[],links={};options=options||{};Events.call(self,events);Navigation.call(self,events);self.loadFromString=loadFromString;self.update=update;self.getLinks=getLinks;self.getSlides=getSlides;self.getSlideCount=getSlideCount;self.getSlideByName=getSlideByName;self.togglePresenterMode=togglePresenterMode;self.toggleHelp=toggleHelp;self.toggleBlackout=toggleBlackout;self.toggleMirrored=toggleMirrored;self.toggleFullscreen=toggleFullscreen;self.createClone=createClone;self.resetTimer=resetTimer;self.getRatio=getOrDefault("ratio","4:3");self.getHighlightStyle=getOrDefault("highlightStyle","default");self.getHighlightLanguage=getOrDefault("highlightLanguage","");self.getSlideNumberFormat=getOrDefault("slideNumberFormat","%current% / %total%");loadFromString(options.source);events.on("toggleBlackout",function(){if(self.clone&&!self.clone.closed){self.clone.postMessage("toggleBlackout","*")}});function loadFromString(source){source=source||"";slides=createSlides(source,options);expandVariables(slides);links={};slides.forEach(function(slide){for(var id in slide.links){if(slide.links.hasOwnProperty(id)){links[id]=slide.links[id]}}});events.emit("slidesChanged")}function update(){events.emit("resize")}function getLinks(){return links}function getSlides(){return slides.map(function(slide){return slide})}function getSlideCount(){return slides.length}function getSlideByName(name){return slides.byName[name]}function togglePresenterMode(){events.emit("togglePresenterMode")}function toggleHelp(){events.emit("toggleHelp")}function toggleBlackout(){events.emit("toggleBlackout")}function toggleMirrored(){events.emit("toggleMirrored")}function toggleFullscreen(){events.emit("toggleFullscreen")}function createClone(){events.emit("createClone")}function resetTimer(){events.emit("resetTimer")}function getOrDefault(key,defaultValue){return function(){if(options[key]===undefined){return defaultValue}return options[key]}}}function createSlides(slideshowSource,options){var parser=new Parser,parsedSlides=parser.parse(slideshowSource,macros),slides=[],byName={},layoutSlide;slides.byName={};parsedSlides.forEach(function(slide,i){var template,slideViewModel;if(slide.properties.continued==="true"&&i>0){template=slides[slides.length-1]}else if(byName[slide.properties.template]){template=byName[slide.properties.template]}else if(slide.properties.layout==="false"){layoutSlide=undefined}else if(layoutSlide&&slide.properties.layout!=="true"){template=layoutSlide}if(slide.properties.continued==="true"&&options.countIncrementalSlides===false&&slide.properties.count===undefined){slide.properties.count="false"}slideViewModel=new Slide(slides.length,slide,template);if(slide.properties.layout==="true"){layoutSlide=slideViewModel}if(slide.properties.name){byName[slide.properties.name]=slideViewModel}if(slide.properties.layout!=="true"){slides.push(slideViewModel);if(slide.properties.name){slides.byName[slide.properties.name]=slideViewModel}}});return slides}function expandVariables(slides){slides.forEach(function(slide){slide.expandVariables()})}},{"./slideshow/events":20,"./slideshow/navigation":21,"./slide":22,"../utils":8,"../parser":10,"../macros":15}],12:[function(require,module,exports){!function(){module.exports=Controller;var keyboard=require("./inputs/keyboard"),mouse=require("./inputs/mouse"),touch=require("./inputs/touch"),message=require("./inputs/message"),location=require("./inputs/location");function Controller(events,dom,slideshowView,options){options=options||{};message.register(events);location.register(events,dom,slideshowView);keyboard.register(events);mouse.register(events,options);touch.register(events,options);addApiEventListeners(events,slideshowView,options)}function addApiEventListeners(events,slideshowView,options){events.on("pause",function(event){keyboard.unregister(events);mouse.unregister(events);touch.unregister(events)});events.on("resume",function(event){keyboard.register(events);mouse.register(events,options);touch.register(events,options)})}}()},{"./inputs/keyboard":23,"./inputs/mouse":24,"./inputs/touch":25,"./inputs/message":26,"./inputs/location":27}],16:[function(require,module,exports){module.exports=Lexer;var CODE=1,INLINE_CODE=2,CONTENT=3,FENCES=4,DEF=5,DEF_HREF=6,DEF_TITLE=7,MACRO=8,MACRO_ARGS=9,MACRO_OBJ=10,SEPARATOR=11,NOTES_SEPARATOR=12;var regexByName={CODE:/(?:^|\n)( {4}[^\n]+\n*)+/,INLINE_CODE:/`([^`]+?)`/,CONTENT:/(?:\\)?((?:\.[a-zA-Z_\-][a-zA-Z\-_0-9]*)+)\[/,FENCES:/(?:^|\n) *(`{3,}|~{3,}) *(?:\S+)? *\n(?:[\s\S]+?)\s*\4 *(?:\n+|$)/,DEF:/(?:^|\n) *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,MACRO:/!\[:([^\] ]+)([^\]]*)\](?:\(([^\)]*)\))?/,SEPARATOR:/(?:^|\n)(---?)(?:\n|$)/,NOTES_SEPARATOR:/(?:^|\n)(\?{3})(?:\n|$)/};var block=replace(/CODE|INLINE_CODE|CONTENT|FENCES|DEF|MACRO|SEPARATOR|NOTES_SEPARATOR/,regexByName),inline=replace(/CODE|INLINE_CODE|CONTENT|FENCES|DEF|MACRO/,regexByName);function Lexer(){}Lexer.prototype.lex=function(src){var tokens=lex(src,block),i;for(i=tokens.length-2;i>=0;i--){if(tokens[i].type==="text"&&tokens[i+1].type==="text"){tokens[i].text+=tokens[i+1].text;tokens.splice(i+1,1)}}return tokens};function lex(src,regex,tokens){var cap,text;tokens=tokens||[];while((cap=regex.exec(src))!==null){if(cap.index>0){tokens.push({type:"text",text:src.substring(0,cap.index)})}if(cap[CODE]){tokens.push({type:"code",text:cap[0]})}else if(cap[INLINE_CODE]){tokens.push({type:"text",text:cap[0]})}else if(cap[FENCES]){tokens.push({type:"fences",text:cap[0]})}else if(cap[DEF]){tokens.push({type:"def",id:cap[DEF],href:cap[DEF_HREF],title:cap[DEF_TITLE]})}else if(cap[MACRO]){tokens.push({type:"macro",name:cap[MACRO],args:(cap[MACRO_ARGS]||"").split(",").map(trim),obj:cap[MACRO_OBJ]})}else if(cap[SEPARATOR]){tokens.push({type:"separator",text:cap[SEPARATOR]})}else if(cap[NOTES_SEPARATOR]){tokens.push({type:"notes_separator",text:cap[NOTES_SEPARATOR]})}else if(cap[CONTENT]){text=getTextInBrackets(src,cap.index+cap[0].length);if(text!==undefined){src=src.substring(text.length+1);if(cap[0][0]!=="\\"){tokens.push({type:"content_start",classes:cap[CONTENT].substring(1).split("."),block:text.indexOf("\n")!==-1});lex(text,inline,tokens);tokens.push({type:"content_end",block:text.indexOf("\n")!==-1})}else{tokens.push({type:"text",text:cap[0].substring(1)+text+"]"})}}else{tokens.push({type:"text",text:cap[0]})}}src=src.substring(cap.index+cap[0].length)}if(src||!src&&tokens.length===0){tokens.push({type:"text",text:src})}return tokens}function replace(regex,replacements){return new RegExp(regex.source.replace(/\w{2,}/g,function(key){return replacements[key].source}))}function trim(text){if(typeof text==="string"){return text.trim()}return text}function getTextInBrackets(src,offset){var depth=1,pos=offset,chr;while(depth>0&&pos<src.length){chr=src[pos++];depth+=chr==="["&&1||chr==="]"&&-1||0}if(depth===0){src=src.substr(offset,pos-offset-1);return src}}},{}],24:[function(require,module,exports){exports.register=function(events,options){addMouseEventListeners(events,options)};exports.unregister=function(events){removeMouseEventListeners(events)};function addMouseEventListeners(events,options){if(options.click){events.on("click",function(event){if(event.target.nodeName==="A"){return}else if(event.button===0){events.emit("gotoNextSlide")}});events.on("contextmenu",function(event){if(event.target.nodeName==="A"){return}event.preventDefault();events.emit("gotoPreviousSlide")})}if(options.scroll!==false){var scrollHandler=function(event){if(event.wheelDeltaY>0||event.detail<0){events.emit("gotoPreviousSlide")}else if(event.wheelDeltaY<0||event.detail>0){events.emit("gotoNextSlide")}};events.on("mousewheel",scrollHandler);events.on("DOMMouseScroll",scrollHandler)}}function removeMouseEventListeners(events){events.removeAllListeners("click");events.removeAllListeners("contextmenu");events.removeAllListeners("mousewheel")}},{}],23:[function(require,module,exports){exports.register=function(events){addKeyboardEventListeners(events)};exports.unregister=function(events){removeKeyboardEventListeners(events)};function addKeyboardEventListeners(events){events.on("keydown",function(event){if(event.metaKey||event.ctrlKey){return}switch(event.keyCode){case 33:case 37:case 38:events.emit("gotoPreviousSlide");break;case 32:case 34:case 39:case 40:events.emit("gotoNextSlide");break;case 36:events.emit("gotoFirstSlide");break;case 35:events.emit("gotoLastSlide");break;case 27:events.emit("hideOverlay");break}});events.on("keypress",function(event){if(event.metaKey||event.ctrlKey){return}switch(String.fromCharCode(event.which)){case"j":events.emit("gotoNextSlide");break;case"k":events.emit("gotoPreviousSlide");break;case"b":events.emit("toggleBlackout");break;case"m":events.emit("toggleMirrored");break;case"c":events.emit("createClone");break;case"p":events.emit("togglePresenterMode");break;case"f":events.emit("toggleFullscreen");break;case"t":events.emit("resetTimer");break;case"h":case"?":events.emit("toggleHelp");break}})}function removeKeyboardEventListeners(events){events.removeAllListeners("keydown");events.removeAllListeners("keypress")}},{}],25:[function(require,module,exports){exports.register=function(events,options){addTouchEventListeners(events,options)};exports.unregister=function(events){removeTouchEventListeners(events)};function addTouchEventListeners(events,options){var touch,startX,endX;if(options.touch===false){return}var isTap=function(){return Math.abs(startX-endX)<10};var handleTap=function(){events.emit("tap",endX)};var handleSwipe=function(){if(startX>endX){events.emit("gotoNextSlide")}else{events.emit("gotoPreviousSlide")}};events.on("touchstart",function(event){touch=event.touches[0];startX=touch.clientX});events.on("touchend",function(event){if(event.target.nodeName.toUpperCase()==="A"){return}touch=event.changedTouches[0];endX=touch.clientX;if(isTap()){handleTap()}else{handleSwipe()}});events.on("touchmove",function(event){event.preventDefault()})}function removeTouchEventListeners(events){events.removeAllListeners("touchstart");events.removeAllListeners("touchend");events.removeAllListeners("touchmove")}},{}],21:[function(require,module,exports){module.exports=Navigation;function Navigation(events){var self=this,currentSlideIndex=-1,started=null;self.getCurrentSlideIndex=getCurrentSlideIndex;self.gotoSlide=gotoSlide;self.gotoPreviousSlide=gotoPreviousSlide;self.gotoNextSlide=gotoNextSlide;self.gotoFirstSlide=gotoFirstSlide;self.gotoLastSlide=gotoLastSlide;self.pause=pause;self.resume=resume;events.on("gotoSlide",gotoSlide);events.on("gotoPreviousSlide",gotoPreviousSlide);events.on("gotoNextSlide",gotoNextSlide);events.on("gotoFirstSlide",gotoFirstSlide);events.on("gotoLastSlide",gotoLastSlide);events.on("slidesChanged",function(){if(currentSlideIndex>self.getSlideCount()){currentSlideIndex=self.getSlideCount()}});events.on("createClone",function(){if(!self.clone||self.clone.closed){self.clone=window.open(location.href,"_blank","location=no")}else{self.clone.focus()}});events.on("resetTimer",function(){started=false});function pause(){events.emit("pause")}function resume(){events.emit("resume")}function getCurrentSlideIndex(){return currentSlideIndex}function gotoSlideByIndex(slideIndex,noMessage){var alreadyOnSlide=slideIndex===currentSlideIndex,slideOutOfRange=slideIndex<0||slideIndex>self.getSlideCount()-1;if(noMessage===undefined)noMessage=false;if(alreadyOnSlide||slideOutOfRange){return}if(currentSlideIndex!==-1){events.emit("hideSlide",currentSlideIndex,false)}if(started===null){started=false}else if(started===false){events.emit("start");started=true}events.emit("showSlide",slideIndex);currentSlideIndex=slideIndex;events.emit("slideChanged",slideIndex+1);if(!noMessage){if(self.clone&&!self.clone.closed){self.clone.postMessage("gotoSlide:"+(currentSlideIndex+1),"*")}if(window.opener){window.opener.postMessage("gotoSlide:"+(currentSlideIndex+1),"*")}}}function gotoSlide(slideNoOrName,noMessage){var slideIndex=getSlideIndex(slideNoOrName);gotoSlideByIndex(slideIndex,noMessage)}function gotoPreviousSlide(){gotoSlideByIndex(currentSlideIndex-1)}function gotoNextSlide(){gotoSlideByIndex(currentSlideIndex+1)}function gotoFirstSlide(){gotoSlideByIndex(0)}function gotoLastSlide(){gotoSlideByIndex(self.getSlideCount()-1)}function getSlideIndex(slideNoOrName){var slideNo,slide;if(typeof slideNoOrName==="number"){return slideNoOrName-1}slideNo=parseInt(slideNoOrName,10);if(slideNo.toString()===slideNoOrName){return slideNo-1}if(slideNoOrName.match(/^p\d+$/)){events.emit("forcePresenterMode");return parseInt(slideNoOrName.substr(1),10)-1}slide=self.getSlideByName(slideNoOrName);if(slide){return slide.getSlideIndex()}return 0}}},{}],20:[function(require,module,exports){var EventEmitter=require("events").EventEmitter;module.exports=Events;function Events(events){var self=this,externalEvents=new EventEmitter;externalEvents.setMaxListeners(0);self.on=function(){externalEvents.on.apply(externalEvents,arguments);return self};["showSlide","hideSlide","beforeShowSlide","afterShowSlide","beforeHideSlide","afterHideSlide"].map(function(eventName){events.on(eventName,function(slideIndex){var slide=self.getSlides()[slideIndex];externalEvents.emit(eventName,slide)})})}},{events:1}],22:[function(require,module,exports){module.exports=Slide;function Slide(slideIndex,slide,template){var self=this;self.properties=slide.properties||{};self.links=slide.links||{};self.content=slide.content||[];self.notes=slide.notes||"";self.getSlideIndex=function(){return slideIndex};if(template){inherit(self,template)}}function inherit(slide,template){inheritProperties(slide,template);inheritContent(slide,template);inheritNotes(slide,template)}function inheritProperties(slide,template){var property,value;for(property in template.properties){if(!template.properties.hasOwnProperty(property)||ignoreProperty(property)){continue}value=[template.properties[property]];if(property==="class"&&slide.properties[property]){value.push(slide.properties[property])}if(property==="class"||slide.properties[property]===undefined){slide.properties[property]=value.join(", ")}}}function ignoreProperty(property){return property==="name"||property==="layout"||property==="count"}function inheritContent(slide,template){var expandedVariables;slide.properties.content=slide.content.slice();slide.content=template.content.slice();expandedVariables=slide.expandVariables(true);if(expandedVariables.content===undefined){slide.content=slide.content.concat(slide.properties.content)}delete slide.properties.content}function inheritNotes(slide,template){if(template.notes){slide.notes=template.notes+"\n\n"+slide.notes}}Slide.prototype.expandVariables=function(contentOnly,content,expandResult){var properties=this.properties,i;content=content!==undefined?content:this.content;expandResult=expandResult||{};for(i=0;i<content.length;++i){if(typeof content[i]==="string"){content[i]=content[i].replace(/(\\)?(\{\{([^\}\n]+)\}\})/g,expand)}else{this.expandVariables(contentOnly,content[i].content,expandResult)}}function expand(match,escaped,unescapedMatch,property){var propertyName=property.trim(),propertyValue;if(escaped){return contentOnly?match[0]:unescapedMatch}if(contentOnly&&propertyName!=="content"){return match}propertyValue=properties[propertyName];if(propertyValue!==undefined){expandResult[propertyName]=propertyValue;return propertyValue}return propertyName==="content"?"":unescapedMatch}return expandResult}},{}],19:[function(require,module,exports){var referenceWidth=908,referenceHeight=681,referenceRatio=referenceWidth/referenceHeight;module.exports=Scaler;function Scaler(events,slideshow){var self=this;self.events=events;self.slideshow=slideshow;self.ratio=getRatio(slideshow);self.dimensions=getDimensions(self.ratio);self.events.on("propertiesChanged",function(changes){if(changes.hasOwnProperty("ratio")){self.ratio=getRatio(slideshow);self.dimensions=getDimensions(self.ratio)}})}Scaler.prototype.scaleToFit=function(element,container){var self=this,containerHeight=container.clientHeight,containerWidth=container.clientWidth,scale,scaledWidth,scaledHeight,ratio=self.ratio,dimensions=self.dimensions,direction,left,top;if(containerWidth/ratio.width>containerHeight/ratio.height){scale=containerHeight/dimensions.height}else{scale=containerWidth/dimensions.width}scaledWidth=dimensions.width*scale;scaledHeight=dimensions.height*scale;left=(containerWidth-scaledWidth)/2;top=(containerHeight-scaledHeight)/2;element.style["-webkit-transform"]="scale("+scale+")";element.style.MozTransform="scale("+scale+")";element.style.left=Math.max(left,0)+"px";element.style.top=Math.max(top,0)+"px"};function getRatio(slideshow){var ratioComponents=slideshow.getRatio().split(":"),ratio;ratio={width:parseInt(ratioComponents[0],10),height:parseInt(ratioComponents[1],10)};ratio.ratio=ratio.width/ratio.height;return ratio}function getDimensions(ratio){return{width:Math.floor(referenceWidth/referenceRatio*ratio.ratio),height:referenceHeight}}},{}],26:[function(require,module,exports){exports.register=function(events){addMessageEventListeners(events)};function addMessageEventListeners(events){events.on("message",navigateByMessage);function navigateByMessage(message){var cap;if((cap=/^gotoSlide:(\d+)$/.exec(message.data))!==null){events.emit("gotoSlide",parseInt(cap[1],10),true)}else if(message.data==="toggleBlackout"){events.emit("toggleBlackout")}}}},{}],27:[function(require,module,exports){exports.register=function(events,dom,slideshowView){addLocationEventListeners(events,dom,slideshowView)};function addLocationEventListeners(events,dom,slideshowView){if(slideshowView.isEmbedded()){events.emit("gotoSlide",1)}else{events.on("hashchange",navigateByHash);
events.on("slideChanged",updateHash);navigateByHash()}function navigateByHash(){var slideNoOrName=(dom.getLocationHash()||"").substr(1);events.emit("gotoSlide",slideNoOrName)}function updateHash(slideNoOrName){dom.setLocationHash("#"+slideNoOrName)}}},{}],18:[function(require,module,exports){var converter=require("../converter");module.exports=NotesView;function NotesView(events,element,slideViewsAccessor){var self=this;self.events=events;self.element=element;self.slideViewsAccessor=slideViewsAccessor;self.configureElements();events.on("showSlide",function(slideIndex){self.showSlide(slideIndex)})}NotesView.prototype.showSlide=function(slideIndex){var self=this,slideViews=self.slideViewsAccessor(),slideView=slideViews[slideIndex],nextSlideView=slideViews[slideIndex+1];self.notesElement.innerHTML=slideView.notesElement.innerHTML;if(nextSlideView){self.notesPreviewElement.innerHTML=nextSlideView.notesElement.innerHTML}else{self.notesPreviewElement.innerHTML=""}};NotesView.prototype.configureElements=function(){var self=this;self.notesElement=self.element.getElementsByClassName("remark-notes")[0];self.notesPreviewElement=self.element.getElementsByClassName("remark-notes-preview")[0];self.notesElement.addEventListener("mousewheel",function(event){event.stopPropagation()});self.notesPreviewElement.addEventListener("mousewheel",function(event){event.stopPropagation()});self.toolbarElement=self.element.getElementsByClassName("remark-toolbar")[0];var commands={increase:function(){self.notesElement.style.fontSize=(parseFloat(self.notesElement.style.fontSize)||1)+.1+"em";self.notesPreviewElement.style.fontsize=self.notesElement.style.fontSize},decrease:function(){self.notesElement.style.fontSize=(parseFloat(self.notesElement.style.fontSize)||1)-.1+"em";self.notesPreviewElement.style.fontsize=self.notesElement.style.fontSize}};self.toolbarElement.getElementsByTagName("a").forEach(function(link){link.addEventListener("click",function(e){var command=e.target.hash.substr(1);commands[command]();e.preventDefault()})})}},{"../converter":9}],17:[function(require,module,exports){var SlideNumber=require("components/slide-number"),converter=require("../converter"),highlighter=require("../highlighter"),utils=require("../utils");module.exports=SlideView;function SlideView(events,slideshow,scaler,slide){var self=this;self.events=events;self.slideshow=slideshow;self.scaler=scaler;self.slide=slide;self.slideNumber=new SlideNumber(slide,slideshow);self.configureElements();self.updateDimensions();self.events.on("propertiesChanged",function(changes){if(changes.hasOwnProperty("ratio")){self.updateDimensions()}})}SlideView.prototype.updateDimensions=function(){var self=this,dimensions=self.scaler.dimensions;self.scalingElement.style.width=dimensions.width+"px";self.scalingElement.style.height=dimensions.height+"px"};SlideView.prototype.scale=function(containerElement){var self=this;self.scaler.scaleToFit(self.scalingElement,containerElement)};SlideView.prototype.show=function(){utils.addClass(this.containerElement,"remark-visible");utils.removeClass(this.containerElement,"remark-fading")};SlideView.prototype.hide=function(){var self=this;utils.removeClass(this.containerElement,"remark-visible");utils.addClass(this.containerElement,"remark-fading");setTimeout(function(){utils.removeClass(self.containerElement,"remark-fading")},1e3)};SlideView.prototype.configureElements=function(){var self=this;self.containerElement=document.createElement("div");self.containerElement.className="remark-slide-container";self.scalingElement=document.createElement("div");self.scalingElement.className="remark-slide-scaler";self.element=document.createElement("div");self.element.className="remark-slide";self.contentElement=createContentElement(self.events,self.slideshow,self.slide);self.notesElement=createNotesElement(self.slideshow,self.slide.notes);self.contentElement.appendChild(self.slideNumber.element);self.element.appendChild(self.contentElement);self.scalingElement.appendChild(self.element);self.containerElement.appendChild(self.scalingElement);self.containerElement.appendChild(self.notesElement)};SlideView.prototype.scaleBackgroundImage=function(dimensions){var self=this,styles=window.getComputedStyle(this.contentElement),backgroundImage=styles.backgroundImage,match,image,scale;if((match=/^url\(("?)([^\)]+?)\1\)/.exec(backgroundImage))!==null){image=new Image;image.onload=function(){if(image.width>dimensions.width||image.height>dimensions.height){if(!self.originalBackgroundSize){self.originalBackgroundSize=self.contentElement.style.backgroundSize;self.originalBackgroundPosition=self.contentElement.style.backgroundPosition;self.backgroundSizeSet=true;if(dimensions.width/image.width<dimensions.height/image.height){scale=dimensions.width/image.width}else{scale=dimensions.height/image.height}self.contentElement.style.backgroundSize=image.width*scale+"px "+image.height*scale+"px";self.contentElement.style.backgroundPosition="50% "+(dimensions.height-image.height*scale)/2+"px"}}else{if(self.backgroundSizeSet){self.contentElement.style.backgroundSize=self.originalBackgroundSize;self.contentElement.style.backgroundPosition=self.originalBackgroundPosition;self.backgroundSizeSet=false}}};image.src=match[2]}};function createContentElement(events,slideshow,slide){var element=document.createElement("div");if(slide.properties.name){element.id="slide-"+slide.properties.name}styleContentElement(slideshow,element,slide.properties);element.innerHTML=converter.convertMarkdown(slide.content,slideshow.getLinks());highlightCodeBlocks(element,slideshow);return element}function styleContentElement(slideshow,element,properties){element.className="";setClassFromProperties(element,properties);setHighlightStyleFromProperties(element,properties,slideshow);setBackgroundFromProperties(element,properties)}function createNotesElement(slideshow,notes){var element=document.createElement("div");element.className="remark-slide-notes";element.innerHTML=converter.convertMarkdown(notes);highlightCodeBlocks(element,slideshow);return element}function setBackgroundFromProperties(element,properties){var backgroundImage=properties["background-image"];if(backgroundImage){element.style.backgroundImage=backgroundImage}}function setHighlightStyleFromProperties(element,properties,slideshow){var highlightStyle=properties["highlight-style"]||slideshow.getHighlightStyle();if(highlightStyle){utils.addClass(element,"hljs-"+highlightStyle)}}function setClassFromProperties(element,properties){utils.addClass(element,"remark-slide-content");(properties["class"]||"").split(/,| /).filter(function(s){return s!==""}).forEach(function(c){utils.addClass(element,c)})}function highlightCodeBlocks(content,slideshow){var codeBlocks=content.getElementsByTagName("code");codeBlocks.forEach(function(block){if(block.parentElement.tagName!=="PRE"){utils.addClass(block,"remark-inline-code");return}if(block.className===""){block.className=slideshow.getHighlightLanguage()}var meta=extractMetadata(block);if(block.className!==""){highlighter.engine.highlightBlock(block," ")}wrapLines(block);highlightBlockLines(block,meta.highlightedLines);highlightBlockSpans(block);utils.addClass(block,"remark-code")})}function extractMetadata(block){var highlightedLines=[];block.innerHTML=block.innerHTML.split(/\r?\n/).map(function(line,i){if(line.indexOf("*")===0){highlightedLines.push(i);return line.replace(/^\*( )?/,"$1$1")}return line}).join("\n");return{highlightedLines:highlightedLines}}function wrapLines(block){var lines=block.innerHTML.split(/\r?\n/).map(function(line){return'<div class="remark-code-line">'+line+"</div>"});if(lines.length&&lines[lines.length-1].indexOf("><")!==-1){lines.pop()}block.innerHTML=lines.join("")}function highlightBlockLines(block,lines){lines.forEach(function(i){utils.addClass(block.childNodes[i],"remark-code-line-highlighted")})}function highlightBlockSpans(block){var pattern=/([^\\`])`([^`]+?)`/g,replacement='$1<span class="remark-code-span-highlighted">$2</span>';block.childNodes.forEach(function(element){element.innerHTML=element.innerHTML.replace(pattern,replacement)})}},{"components/slide-number":"aIW4aw","../converter":9,"../highlighter":7,"../utils":8}],9:[function(require,module,exports){var marked=require("marked"),converter=module.exports={},element=document.createElement("div");marked.setOptions({gfm:true,tables:true,breaks:false,pedantic:true,sanitize:false,smartLists:true,langPrefix:""});converter.convertMarkdown=function(content,links,inline){element.innerHTML=convertMarkdown(content,links||{},inline);element.innerHTML=element.innerHTML.replace(/<p>\s*<\/p>/g,"");return element.innerHTML.replace(/\n\r?$/,"")};function convertMarkdown(content,links,insideContentClass){var i,tag,markdown="",html;for(i=0;i<content.length;++i){if(typeof content[i]==="string"){markdown+=content[i]}else{tag=content[i].block?"div":"span";markdown+="<"+tag+' class="'+content[i].class+'">';markdown+=convertMarkdown(content[i].content,links,true);markdown+="</"+tag+">"}}var tokens=marked.Lexer.lex(markdown.replace(/^\s+/,""));tokens.links=links;html=marked.Parser.parse(tokens);if(insideContentClass){element.innerHTML=html;if(element.children.length===1&&element.children[0].tagName==="P"){html=element.children[0].innerHTML}}return html}},{marked:28}],28:[function(require,module,exports){!function(global){!function(){var block={newline:/^\n+/,code:/^( {4}[^\n]+\n*)+/,fences:noop,hr:/^( *[-*_]){3,} *(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,nptable:noop,lheading:/^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,blockquote:/^( *>[^\n]+(\n[^\n]+)*\n*)+/,list:/^( *)(bull) [\s\S]+?(?:hr|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:/^ *(?:comment|closed|closing) *(?:\n{2,}|\s*$)/,def:/^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,table:noop,paragraph:/^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,text:/^[^\n]+/};block.bullet=/(?:[*+-]|\d+\.)/;block.item=/^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;block.item=replace(block.item,"gm")(/bull/g,block.bullet)();block.list=replace(block.list)(/bull/g,block.bullet)("hr",/\n+(?=(?: *[-*_]){3,} *(?:\n+|$))/)();block._tag="(?!(?:"+"a|em|strong|small|s|cite|q|dfn|abbr|data|time|code"+"|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo"+"|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b";block.html=replace(block.html)("comment",/<!--[\s\S]*?-->/)("closed",/<(tag)[\s\S]+?<\/\1>/)("closing",/<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)(/tag/g,block._tag)();block.paragraph=replace(block.paragraph)("hr",block.hr)("heading",block.heading)("lheading",block.lheading)("blockquote",block.blockquote)("tag","<"+block._tag)("def",block.def)();block.normal=merge({},block);block.gfm=merge({},block.normal,{fences:/^ *(`{3,}|~{3,}) *(\S+)? *\n([\s\S]+?)\s*\1 *(?:\n+|$)/,paragraph:/^/});block.gfm.paragraph=replace(block.paragraph)("(?!","(?!"+block.gfm.fences.source.replace("\\1","\\2")+"|"+block.list.source.replace("\\1","\\3")+"|")();block.tables=merge({},block.gfm,{nptable:/^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,table:/^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/});function Lexer(options){this.tokens=[];this.tokens.links={};this.options=options||marked.defaults;this.rules=block.normal;if(this.options.gfm){if(this.options.tables){this.rules=block.tables}else{this.rules=block.gfm}}}Lexer.rules=block;Lexer.lex=function(src,options){var lexer=new Lexer(options);return lexer.lex(src)};Lexer.prototype.lex=function(src){src=src.replace(/\r\n|\r/g,"\n").replace(/\t/g," ").replace(/\u00a0/g," ").replace(/\u2424/g,"\n");return this.token(src,true)};Lexer.prototype.token=function(src,top){var src=src.replace(/^ +$/gm,""),next,loose,cap,bull,b,item,space,i,l;while(src){if(cap=this.rules.newline.exec(src)){src=src.substring(cap[0].length);if(cap[0].length>1){this.tokens.push({type:"space"})}}if(cap=this.rules.code.exec(src)){src=src.substring(cap[0].length);cap=cap[0].replace(/^ {4}/gm,"");this.tokens.push({type:"code",text:!this.options.pedantic?cap.replace(/\n+$/,""):cap});continue}if(cap=this.rules.fences.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:"code",lang:cap[2],text:cap[3]});continue}if(cap=this.rules.heading.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:"heading",depth:cap[1].length,text:cap[2]});continue}if(top&&(cap=this.rules.nptable.exec(src))){src=src.substring(cap[0].length);item={type:"table",header:cap[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:cap[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:cap[3].replace(/\n$/,"").split("\n")};for(i=0;i<item.align.length;i++){if(/^ *-+: *$/.test(item.align[i])){item.align[i]="right"}else if(/^ *:-+: *$/.test(item.align[i])){item.align[i]="center"}else if(/^ *:-+ *$/.test(item.align[i])){item.align[i]="left"}else{item.align[i]=null}}for(i=0;i<item.cells.length;i++){item.cells[i]=item.cells[i].split(/ *\| */)}this.tokens.push(item);continue}if(cap=this.rules.lheading.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:"heading",depth:cap[2]==="="?1:2,text:cap[1]});continue}if(cap=this.rules.hr.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:"hr"});continue}if(cap=this.rules.blockquote.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:"blockquote_start"});cap=cap[0].replace(/^ *> ?/gm,"");this.token(cap,top);this.tokens.push({type:"blockquote_end"});continue}if(cap=this.rules.list.exec(src)){src=src.substring(cap[0].length);bull=cap[2];this.tokens.push({type:"list_start",ordered:bull.length>1});cap=cap[0].match(this.rules.item);next=false;l=cap.length;i=0;for(;i<l;i++){item=cap[i];space=item.length;item=item.replace(/^ *([*+-]|\d+\.) +/,"");if(~item.indexOf("\n ")){space-=item.length;item=!this.options.pedantic?item.replace(new RegExp("^ {1,"+space+"}","gm"),""):item.replace(/^ {1,4}/gm,"")}if(this.options.smartLists&&i!==l-1){b=block.bullet.exec(cap[i+1])[0];if(bull!==b&&!(bull.length>1&&b.length>1)){src=cap.slice(i+1).join("\n")+src;i=l-1}}loose=next||/\n\n(?!\s*$)/.test(item);if(i!==l-1){next=item.charAt(item.length-1)==="\n";if(!loose)loose=next}this.tokens.push({type:loose?"loose_item_start":"list_item_start"});this.token(item,false);this.tokens.push({type:"list_item_end"})}this.tokens.push({type:"list_end"});continue}if(cap=this.rules.html.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:this.options.sanitize?"paragraph":"html",pre:cap[1]==="pre"||cap[1]==="script"||cap[1]==="style",text:cap[0]});continue}if(top&&(cap=this.rules.def.exec(src))){src=src.substring(cap[0].length);this.tokens.links[cap[1].toLowerCase()]={href:cap[2],title:cap[3]};continue}if(top&&(cap=this.rules.table.exec(src))){src=src.substring(cap[0].length);item={type:"table",header:cap[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:cap[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:cap[3].replace(/(?: *\| *)?\n$/,"").split("\n")};for(i=0;i<item.align.length;i++){if(/^ *-+: *$/.test(item.align[i])){item.align[i]="right"}else if(/^ *:-+: *$/.test(item.align[i])){item.align[i]="center"}else if(/^ *:-+ *$/.test(item.align[i])){item.align[i]="left"}else{item.align[i]=null}}for(i=0;i<item.cells.length;i++){item.cells[i]=item.cells[i].replace(/^ *\| *| *\| *$/g,"").split(/ *\| */)}this.tokens.push(item);continue}if(top&&(cap=this.rules.paragraph.exec(src))){src=src.substring(cap[0].length);this.tokens.push({type:"paragraph",text:cap[1].charAt(cap[1].length-1)==="\n"?cap[1].slice(0,-1):cap[1]});continue}if(cap=this.rules.text.exec(src)){src=src.substring(cap[0].length);this.tokens.push({type:"text",text:cap[0]});continue}if(src){throw new Error("Infinite loop on byte: "+src.charCodeAt(0))}}return this.tokens};var inline={escape:/^\\([\\`*{}\[\]()#+\-.!_>])/,autolink:/^<([^ >]+(@|:\/)[^ >]+)>/,url:noop,tag:/^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,link:/^!?\[(inside)\]\(href\)/,reflink:/^!?\[(inside)\]\s*\[([^\]]*)\]/,nolink:/^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,strong:/^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,em:/^\b_((?:__|[\s\S])+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,code:/^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,br:/^ {2,}\n(?!\s*$)/,del:noop,text:/^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/};inline._inside=/(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;inline._href=/\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;inline.link=replace(inline.link)("inside",inline._inside)("href",inline._href)();inline.reflink=replace(inline.reflink)("inside",inline._inside)();inline.normal=merge({},inline);inline.pedantic=merge({},inline.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/});inline.gfm=merge({},inline.normal,{escape:replace(inline.escape)("])","~|])")(),url:/^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,del:/^~~(?=\S)([\s\S]*?\S)~~/,text:replace(inline.text)("]|","~]|")("|","|https?://|")()});inline.breaks=merge({},inline.gfm,{br:replace(inline.br)("{2,}","*")(),text:replace(inline.gfm.text)("{2,}","*")()});function InlineLexer(links,options){this.options=options||marked.defaults;this.links=links;this.rules=inline.normal;this.renderer=this.options.renderer||new Renderer;this.renderer.options=this.options;if(!this.links){throw new Error("Tokens array requires a `links` property.")}if(this.options.gfm){if(this.options.breaks){this.rules=inline.breaks}else{this.rules=inline.gfm}}else if(this.options.pedantic){this.rules=inline.pedantic}}InlineLexer.rules=inline;InlineLexer.output=function(src,links,options){var inline=new InlineLexer(links,options);return inline.output(src)};InlineLexer.prototype.output=function(src){var out="",link,text,href,cap;while(src){if(cap=this.rules.escape.exec(src)){src=src.substring(cap[0].length);out+=cap[1];continue}if(cap=this.rules.autolink.exec(src)){src=src.substring(cap[0].length);if(cap[2]==="@"){text=cap[1].charAt(6)===":"?this.mangle(cap[1].substring(7)):this.mangle(cap[1]);href=this.mangle("mailto:")+text}else{text=escape(cap[1]);href=text}out+=this.renderer.link(href,null,text);continue}if(cap=this.rules.url.exec(src)){src=src.substring(cap[0].length);text=escape(cap[1]);href=text;out+=this.renderer.link(href,null,text);continue}if(cap=this.rules.tag.exec(src)){src=src.substring(cap[0].length);out+=this.options.sanitize?escape(cap[0]):cap[0];continue}if(cap=this.rules.link.exec(src)){src=src.substring(cap[0].length);out+=this.outputLink(cap,{href:cap[2],title:cap[3]});continue}if((cap=this.rules.reflink.exec(src))||(cap=this.rules.nolink.exec(src))){src=src.substring(cap[0].length);link=(cap[2]||cap[1]).replace(/\s+/g," ");link=this.links[link.toLowerCase()];if(!link||!link.href){out+=cap[0].charAt(0);src=cap[0].substring(1)+src;continue}out+=this.outputLink(cap,link);continue}if(cap=this.rules.strong.exec(src)){src=src.substring(cap[0].length);out+=this.renderer.strong(this.output(cap[2]||cap[1]));continue}if(cap=this.rules.em.exec(src)){src=src.substring(cap[0].length);out+=this.renderer.em(this.output(cap[2]||cap[1]));continue}if(cap=this.rules.code.exec(src)){src=src.substring(cap[0].length);out+=this.renderer.codespan(escape(cap[2],true));continue}if(cap=this.rules.br.exec(src)){src=src.substring(cap[0].length);out+=this.renderer.br();continue}if(cap=this.rules.del.exec(src)){src=src.substring(cap[0].length);out+=this.renderer.del(this.output(cap[1]));continue}if(cap=this.rules.text.exec(src)){src=src.substring(cap[0].length);out+=escape(this.smartypants(cap[0]));continue}if(src){throw new Error("Infinite loop on byte: "+src.charCodeAt(0))}}return out};InlineLexer.prototype.outputLink=function(cap,link){var href=escape(link.href),title=link.title?escape(link.title):null;return cap[0].charAt(0)!=="!"?this.renderer.link(href,title,this.output(cap[1])):this.renderer.image(href,title,escape(cap[1]))};InlineLexer.prototype.smartypants=function(text){if(!this.options.smartypants)return text;return text.replace(/--/g,"—").replace(/(^|[-\u2014/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…")};InlineLexer.prototype.mangle=function(text){var out="",l=text.length,i=0,ch;for(;i<l;i++){ch=text.charCodeAt(i);if(Math.random()>.5){ch="x"+ch.toString(16)}out+="&#"+ch+";"}return out};function Renderer(options){this.options=options||{}}Renderer.prototype.code=function(code,lang,escaped){if(this.options.highlight){var out=this.options.highlight(code,lang);if(out!=null&&out!==code){escaped=true;code=out}}if(!lang){return"<pre><code>"+(escaped?code:escape(code,true))+"\n</code></pre>"}return'<pre><code class="'+this.options.langPrefix+escape(lang,true)+'">'+(escaped?code:escape(code,true))+"\n</code></pre>\n"};Renderer.prototype.blockquote=function(quote){return"<blockquote>\n"+quote+"</blockquote>\n"};Renderer.prototype.html=function(html){return html};Renderer.prototype.heading=function(text,level,raw){return"<h"+level+' id="'+this.options.headerPrefix+raw.toLowerCase().replace(/[^\w]+/g,"-")+'">'+text+"</h"+level+">\n"};Renderer.prototype.hr=function(){return"<hr>\n"};Renderer.prototype.list=function(body,ordered){var type=ordered?"ol":"ul";return"<"+type+">\n"+body+"</"+type+">\n"};Renderer.prototype.listitem=function(text){return"<li>"+text+"</li>\n"};Renderer.prototype.paragraph=function(text){return"<p>"+text+"</p>\n"};Renderer.prototype.table=function(header,body){return"<table>\n"+"<thead>\n"+header+"</thead>\n"+"<tbody>\n"+body+"</tbody>\n"+"</table>\n"};Renderer.prototype.tablerow=function(content){return"<tr>\n"+content+"</tr>\n"};Renderer.prototype.tablecell=function(content,flags){var type=flags.header?"th":"td";var tag=flags.align?"<"+type+' style="text-align:'+flags.align+'">':"<"+type+">";return tag+content+"</"+type+">\n"};Renderer.prototype.strong=function(text){return"<strong>"+text+"</strong>"};Renderer.prototype.em=function(text){return"<em>"+text+"</em>"};Renderer.prototype.codespan=function(text){return"<code>"+text+"</code>"};Renderer.prototype.br=function(){return"<br>"};Renderer.prototype.del=function(text){return"<del>"+text+"</del>"};Renderer.prototype.link=function(href,title,text){if(this.options.sanitize){try{var prot=decodeURIComponent(unescape(href)).replace(/[^\w:]/g,"").toLowerCase()}catch(e){return""}if(prot.indexOf("javascript:")===0){return""}}var out='<a href="'+href+'"';if(title){out+=' title="'+title+'"'}out+=">"+text+"</a>";return out};Renderer.prototype.image=function(href,title,text){var out='<img src="'+href+'" alt="'+text+'"';if(title){out+=' title="'+title+'"'}out+=">";return out};function Parser(options){this.tokens=[];this.token=null;this.options=options||marked.defaults;this.options.renderer=this.options.renderer||new Renderer;this.renderer=this.options.renderer;this.renderer.options=this.options}Parser.parse=function(src,options,renderer){var parser=new Parser(options,renderer);return parser.parse(src)};Parser.prototype.parse=function(src){this.inline=new InlineLexer(src.links,this.options,this.renderer);this.tokens=src.reverse();var out="";while(this.next()){out+=this.tok()}return out};Parser.prototype.next=function(){return this.token=this.tokens.pop()};Parser.prototype.peek=function(){return this.tokens[this.tokens.length-1]||0};Parser.prototype.parseText=function(){var body=this.token.text;while(this.peek().type==="text"){body+="\n"+this.next().text}return this.inline.output(body)};Parser.prototype.tok=function(){switch(this.token.type){case"space":{return""}case"hr":{return this.renderer.hr()}case"heading":{return this.renderer.heading(this.inline.output(this.token.text),this.token.depth,this.token.text)}case"code":{return this.renderer.code(this.token.text,this.token.lang,this.token.escaped)}case"table":{var header="",body="",i,row,cell,flags,j;cell="";for(i=0;i<this.token.header.length;i++){flags={header:true,align:this.token.align[i]};cell+=this.renderer.tablecell(this.inline.output(this.token.header[i]),{header:true,align:this.token.align[i]})}header+=this.renderer.tablerow(cell);for(i=0;i<this.token.cells.length;i++){row=this.token.cells[i];cell="";for(j=0;j<row.length;j++){cell+=this.renderer.tablecell(this.inline.output(row[j]),{header:false,align:this.token.align[j]})}body+=this.renderer.tablerow(cell)}return this.renderer.table(header,body)}case"blockquote_start":{var body="";while(this.next().type!=="blockquote_end"){body+=this.tok()}return this.renderer.blockquote(body)}case"list_start":{var body="",ordered=this.token.ordered;while(this.next().type!=="list_end"){body+=this.tok()}return this.renderer.list(body,ordered)}case"list_item_start":{var body="";while(this.next().type!=="list_item_end"){body+=this.token.type==="text"?this.parseText():this.tok()}return this.renderer.listitem(body)}case"loose_item_start":{var body="";while(this.next().type!=="list_item_end"){body+=this.tok()}return this.renderer.listitem(body)}case"html":{var html=!this.token.pre&&!this.options.pedantic?this.inline.output(this.token.text):this.token.text;return this.renderer.html(html)}case"paragraph":{return this.renderer.paragraph(this.inline.output(this.token.text))}case"text":{return this.renderer.paragraph(this.parseText())}}};function escape(html,encode){return html.replace(!encode?/&(?!#?\w+;)/g:/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#39;")}function unescape(html){return html.replace(/&([#\w]+);/g,function(_,n){n=n.toLowerCase();if(n==="colon")return":";if(n.charAt(0)==="#"){return n.charAt(1)==="x"?String.fromCharCode(parseInt(n.substring(2),16)):String.fromCharCode(+n.substring(1))}return""})}function replace(regex,opt){regex=regex.source;opt=opt||"";return function self(name,val){if(!name)return new RegExp(regex,opt);val=val.source||val;val=val.replace(/(^|[^\[])\^/g,"$1");regex=regex.replace(name,val);return self}}function noop(){}noop.exec=noop;function merge(obj){var i=1,target,key;for(;i<arguments.length;i++){target=arguments[i];for(key in target){if(Object.prototype.hasOwnProperty.call(target,key)){obj[key]=target[key]}}}return obj}function marked(src,opt,callback){if(callback||typeof opt==="function"){if(!callback){callback=opt;opt=null}opt=merge({},marked.defaults,opt||{});var highlight=opt.highlight,tokens,pending,i=0;try{tokens=Lexer.lex(src,opt)}catch(e){return callback(e)}pending=tokens.length;var done=function(){var out,err;try{out=Parser.parse(tokens,opt)}catch(e){err=e}opt.highlight=highlight;return err?callback(err):callback(null,out)};if(!highlight||highlight.length<3){return done()}delete opt.highlight;if(!pending)return done();for(;i<tokens.length;i++){!function(token){if(token.type!=="code"){return--pending||done()}return highlight(token.text,token.lang,function(err,code){if(code==null||code===token.text){return--pending||done()}token.text=code;token.escaped=true;--pending||done()})}(tokens[i])}return}try{if(opt)opt=merge({},marked.defaults,opt);return Parser.parse(Lexer.lex(src,opt),opt)}catch(e){e.message+="\nPlease report this to https://github.com/chjj/marked.";if((opt||marked.defaults).silent){return"<p>An error occured:</p><pre>"+escape(e.message+"",true)+"</pre>"}throw e}}marked.options=marked.setOptions=function(opt){merge(marked.defaults,opt);return marked};marked.defaults={gfm:true,tables:true,breaks:false,pedantic:false,sanitize:false,smartLists:false,silent:false,highlight:null,langPrefix:"lang-",smartypants:false,headerPrefix:"",renderer:new Renderer};marked.Parser=Parser;marked.parser=Parser.parse;marked.Renderer=Renderer;marked.Lexer=Lexer;marked.lexer=Lexer.lex;marked.InlineLexer=InlineLexer;marked.inlineLexer=InlineLexer.output;marked.parse=marked;if(typeof exports==="object"){module.exports=marked}else if(typeof define==="function"&&define.amd){define(function(){return marked})}else{this.marked=marked}}.call(function(){return this||(typeof window!=="undefined"?window:global)}())}(window)},{}]},{},[3]);
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