⌘T | go to file |
⌘⌃P | go to project |
⌘R | go to methods |
⌃G | go to line |
⌘KB | toggle side bar |
⌘⇧P | command prompt |
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<iframe frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.com/maps?hl=ru&ie=UTF8&output=embed&q={address}"></iframe> |
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# These are my notes from the PragProg book on CoffeeScript of things that either | |
# aren't in the main CS language reference or I didn't pick them up there. I wrote | |
# them down before I forgot, and put it here for others but mainly as a reference for | |
# myself. | |
# assign arguments in constructor to properties of the same name: | |
class Thingie | |
constructor: (@name, @url) -> | |
# is the same as: |
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function slugify(text) | |
{ | |
return text.toString().toLowerCase() | |
.replace(/\s+/g, '-') // Replace spaces with - | |
.replace(/[^\w\-]+/g, '') // Remove all non-word chars | |
.replace(/\-\-+/g, '-') // Replace multiple - with single - | |
.replace(/^-+/, '') // Trim - from start of text | |
.replace(/-+$/, ''); // Trim - from end of text | |
} |
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// background transparency | |
background-transparency(color, alpha = 1) | |
ms-color = argb(color, alpha) | |
background rgb(color) | |
background rgba(color, alpha) | |
.lt-ie8 & | |
zoom 1 | |
.lt-ie9 & | |
background transparent | |
filter s('progid:DXImageTransform.Microsoft.gradient(startColorstr=%s,endColorstr=%s)', ms-color, ms-color) |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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data:text/html, <style type="text/css">.e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div class="e" id="editor"></div><script src="http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("editor");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/ruby");</script> | |
<!-- | |
For other language: Instead of `ace/mode/ruby`, Use | |
Markdown -> `ace/mode/markdown` | |
Python -> `ace/mode/python` | |
C/C++ -> `ace/mode/c_cpp` | |
Javscript -> `ace/mode/javascript` | |
Java -> `ace/mode/java` | |
Scala- -> `ace/mode/scala` |
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# toggle iTerm Dock icon | |
# add this to your .bash_profile or .zshrc | |
function toggleiTerm() { | |
pb='/usr/libexec/PlistBuddy' | |
iTerm='/Applications/iTerm.app/Contents/Info.plist' | |
echo "Do you wish to hide iTerm in Dock?" | |
select ync in "Hide" "Show" "Cancel"; do | |
case $ync in | |
'Hide' ) |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft
,elem.offsetTop
,elem.offsetWidth
,elem.offsetHeight
,elem.offsetParent
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