| /** | |
| * ScrollTo utility | |
| * © https://gist.github.com/james2doyle/5694700 | |
| */ | |
| const easeInOutQuad = (t, b, c, d) => { | |
| if ((t /= d / 2 ) < 1) return c / 2 * t * t + b; | |
| return -c / 2 * ((--t) * (t - 2) - 1) + b; | |
| }; |
Given an Array of Functions fns, what argument(s) can you pass to fns.forEach such that each function in fns will execute, in order, without creating any anonymous (or named) functions or invoking the Function constructor?
function keyword, or arrow functions () => .Function constructor.Function#bind & friends on the Function.prototype are ok.
| // take SVG commands and draw this path to HTML5 canvas | |
| // commandList should look like that: [ { marker: "M", values: [ 10, 10 ] }, | |
| // { marker: "l", values: [ 5, 7 ] }, | |
| // { marker: "C", values: [ -5, 7.2, .3, -16, 24, 10 ] }, | |
| // . . . | |
| // { marker: "z", values: [ ] } ] | |
| // there's another gist which has the code to parse SVG paths: | |
| // https://gist.github.com/shamansir/0ba30dc262d54d04cd7f79e03b281505 |
This tutorial assumes a reasonably new version of Emacs (24.4+)
Erlang Development Tool Suite aims to provide common IDE like functionality.
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>D3 Drawing</title> | |
| <script src="https://cdn.jsdelivr.net/d3js/3.5.9/d3.min.js"></script> | |
| </head> | |
| <body> | |
| <h3>Draw a polygon :D</h3> | |
| <script> |
| // XPath CheatSheet | |
| // To test XPath in your Chrome Debugger: $x('/html/body') | |
| // http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/ | |
| // 0. XPath Examples. | |
| // More: http://xpath.alephzarro.com/content/cheatsheet.html | |
| '//hr[@class="edge" and position()=1]' // every first hr of 'edge' class |
| // XML NULL FIELD REMOVAL | |
| // Removes all Null fields (both with nil=true) from a XmlDoc | |
| public static XmlDocument RemoveNullFields(this XmlDocument xmldoc) | |
| { | |
| XmlNamespaceManager mgr = new XmlNamespaceManager(xmldoc.NameTable); | |
| mgr.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance"); | |
| XmlNodeList nullFields = xmldoc.SelectNodes("//*[@xsi:nil='true']", mgr); |
| // List all files in a directory in Node.js recursively in a synchronous fashion | |
| var walkSync = function(dir, filelist) { | |
| var fs = fs || require('fs'), | |
| files = fs.readdirSync(dir); | |
| filelist = filelist || []; | |
| files.forEach(function(file) { | |
| if (fs.statSync(dir + file).isDirectory()) { | |
| filelist = walkSync(dir + file + '/', filelist); | |
| } | |
| else { |
| =Navigating= | |
| visit('/projects') | |
| visit(post_comments_path(post)) | |
| =Clicking links and buttons= | |
| click_link('id-of-link') | |
| click_link('Link Text') | |
| click_button('Save') | |
| click('Link Text') # Click either a link or a button | |
| click('Button Value') |