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			741 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			HTML
		
	
	
	
	
	
| <!doctype html>
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| 
 | ||
| <title>CodeMirror: CoffeeScript mode</title>
 | ||
| <meta charset="utf-8"/>
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| <link rel=stylesheet href="../../doc/docs.css">
 | ||
| 
 | ||
| <link rel="stylesheet" href="../../lib/codemirror.css">
 | ||
| <script src="../../lib/codemirror.js"></script>
 | ||
| <script src="coffeescript.js"></script>
 | ||
| <style>.CodeMirror {border-top: 1px solid silver; border-bottom: 1px solid silver;}</style>
 | ||
| <div id=nav>
 | ||
|   <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
 | ||
| 
 | ||
|   <ul>
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|     <li><a href="../../index.html">Home</a>
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|     <li><a href="../../doc/manual.html">Manual</a>
 | ||
|     <li><a href="https://github.com/codemirror/codemirror">Code</a>
 | ||
|   </ul>
 | ||
|   <ul>
 | ||
|     <li><a href="../index.html">Language modes</a>
 | ||
|     <li><a class=active href="#">CoffeeScript</a>
 | ||
|   </ul>
 | ||
| </div>
 | ||
| 
 | ||
| <article>
 | ||
| <h2>CoffeeScript mode</h2>
 | ||
| <form><textarea id="code" name="code">
 | ||
| # CoffeeScript mode for CodeMirror
 | ||
| # Copyright (c) 2011 Jeff Pickhardt, released under
 | ||
| # the MIT License.
 | ||
| #
 | ||
| # Modified from the Python CodeMirror mode, which also is 
 | ||
| # under the MIT License Copyright (c) 2010 Timothy Farrell.
 | ||
| #
 | ||
| # The following script, Underscore.coffee, is used to 
 | ||
| # demonstrate CoffeeScript mode for CodeMirror.
 | ||
| #
 | ||
| # To download CoffeeScript mode for CodeMirror, go to:
 | ||
| # https://github.com/pickhardt/coffeescript-codemirror-mode
 | ||
| 
 | ||
| # **Underscore.coffee
 | ||
| # (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.**
 | ||
| # Underscore is freely distributable under the terms of the
 | ||
| # [MIT license](http://en.wikipedia.org/wiki/MIT_License).
 | ||
| # Portions of Underscore are inspired by or borrowed from
 | ||
| # [Prototype.js](http://prototypejs.org/api), Oliver Steele's
 | ||
| # [Functional](http://osteele.com), and John Resig's
 | ||
| # [Micro-Templating](http://ejohn.org).
 | ||
| # For all details and documentation:
 | ||
| # http://documentcloud.github.com/underscore/
 | ||
| 
 | ||
| 
 | ||
| # Baseline setup
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| # --------------
 | ||
| 
 | ||
| # Establish the root object, `window` in the browser, or `global` on the server.
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| root = this
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| 
 | ||
| 
 | ||
| # Save the previous value of the `_` variable.
 | ||
| previousUnderscore = root._
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| 
 | ||
| ### Multiline
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|     comment
 | ||
| ###
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| 
 | ||
| # Establish the object that gets thrown to break out of a loop iteration.
 | ||
| # `StopIteration` is SOP on Mozilla.
 | ||
| breaker = if typeof(StopIteration) is 'undefined' then '__break__' else StopIteration
 | ||
| 
 | ||
| 
 | ||
| #### Docco style single line comment (title)
 | ||
| 
 | ||
| 
 | ||
| # Helper function to escape **RegExp** contents, because JS doesn't have one.
 | ||
| escapeRegExp = (string) -> string.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1')
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| 
 | ||
| 
 | ||
| # Save bytes in the minified (but not gzipped) version:
 | ||
| ArrayProto = Array.prototype
 | ||
| ObjProto = Object.prototype
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| 
 | ||
| 
 | ||
| # Create quick reference variables for speed access to core prototypes.
 | ||
| slice = ArrayProto.slice
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| unshift = ArrayProto.unshift
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| toString = ObjProto.toString
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| hasOwnProperty = ObjProto.hasOwnProperty
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| propertyIsEnumerable = ObjProto.propertyIsEnumerable
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| 
 | ||
| 
 | ||
| # All **ECMA5** native implementations we hope to use are declared here.
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| nativeForEach = ArrayProto.forEach
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| nativeMap = ArrayProto.map
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| nativeReduce = ArrayProto.reduce
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| nativeReduceRight = ArrayProto.reduceRight
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| nativeFilter = ArrayProto.filter
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| nativeEvery = ArrayProto.every
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| nativeSome = ArrayProto.some
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| nativeIndexOf = ArrayProto.indexOf
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| nativeLastIndexOf = ArrayProto.lastIndexOf
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| nativeIsArray = Array.isArray
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| nativeKeys = Object.keys
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| 
 | ||
| 
 | ||
| # Create a safe reference to the Underscore object for use below.
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| _ = (obj) -> new wrapper(obj)
 | ||
| 
 | ||
| 
 | ||
| # Export the Underscore object for **CommonJS**.
 | ||
| if typeof(exports) != 'undefined' then exports._ = _
 | ||
| 
 | ||
| 
 | ||
| # Export Underscore to global scope.
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| root._ = _
 | ||
| 
 | ||
| 
 | ||
| # Current version.
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| _.VERSION = '1.1.0'
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| 
 | ||
| 
 | ||
| # Collection Functions
 | ||
| # --------------------
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| 
 | ||
| # The cornerstone, an **each** implementation.
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| # Handles objects implementing **forEach**, arrays, and raw objects.
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| _.each = (obj, iterator, context) ->
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|   try
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|     if nativeForEach and obj.forEach is nativeForEach
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|       obj.forEach iterator, context
 | ||
|     else if _.isNumber obj.length
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|       iterator.call context, obj[i], i, obj for i in [0...obj.length]
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|     else
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|       iterator.call context, val, key, obj for own key, val of obj
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|   catch e
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|     throw e if e isnt breaker
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|   obj
 | ||
| 
 | ||
| 
 | ||
| # Return the results of applying the iterator to each element. Use JavaScript
 | ||
| # 1.6's version of **map**, if possible.
 | ||
| _.map = (obj, iterator, context) ->
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|   return obj.map(iterator, context) if nativeMap and obj.map is nativeMap
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|   results = []
 | ||
|   _.each obj, (value, index, list) ->
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|     results.push iterator.call context, value, index, list
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|   results
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| 
 | ||
| 
 | ||
| # **Reduce** builds up a single result from a list of values. Also known as
 | ||
| # **inject**, or **foldl**. Uses JavaScript 1.8's version of **reduce**, if possible.
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| _.reduce = (obj, iterator, memo, context) ->
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|   if nativeReduce and obj.reduce is nativeReduce
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|     iterator = _.bind iterator, context if context
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|     return obj.reduce iterator, memo
 | ||
|   _.each obj, (value, index, list) ->
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|     memo = iterator.call context, memo, value, index, list
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|   memo
 | ||
| 
 | ||
| 
 | ||
| # The right-associative version of **reduce**, also known as **foldr**. Uses
 | ||
| # JavaScript 1.8's version of **reduceRight**, if available.
 | ||
| _.reduceRight = (obj, iterator, memo, context) ->
 | ||
|   if nativeReduceRight and obj.reduceRight is nativeReduceRight
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|     iterator = _.bind iterator, context if context
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|     return obj.reduceRight iterator, memo
 | ||
|   reversed = _.clone(_.toArray(obj)).reverse()
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|   _.reduce reversed, iterator, memo, context
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| 
 | ||
| 
 | ||
| # Return the first value which passes a truth test.
 | ||
| _.detect = (obj, iterator, context) ->
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|   result = null
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|   _.each obj, (value, index, list) ->
 | ||
|     if iterator.call context, value, index, list
 | ||
|       result = value
 | ||
|       _.breakLoop()
 | ||
|   result
 | ||
| 
 | ||
| 
 | ||
| # Return all the elements that pass a truth test. Use JavaScript 1.6's
 | ||
| # **filter**, if it exists.
 | ||
| _.filter = (obj, iterator, context) ->
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|   return obj.filter iterator, context if nativeFilter and obj.filter is nativeFilter
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|   results = []
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|   _.each obj, (value, index, list) ->
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|     results.push value if iterator.call context, value, index, list
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|   results
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| 
 | ||
| 
 | ||
| # Return all the elements for which a truth test fails.
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| _.reject = (obj, iterator, context) ->
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|   results = []
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|   _.each obj, (value, index, list) ->
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|     results.push value if not iterator.call context, value, index, list
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|   results
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| 
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| 
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| # Determine whether all of the elements match a truth test. Delegate to
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| # JavaScript 1.6's **every**, if it is present.
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| _.every = (obj, iterator, context) ->
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|   iterator ||= _.identity
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|   return obj.every iterator, context if nativeEvery and obj.every is nativeEvery
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|   result = true
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|   _.each obj, (value, index, list) ->
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|     _.breakLoop() unless (result = result and iterator.call(context, value, index, list))
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|   result
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| 
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| 
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| # Determine if at least one element in the object matches a truth test. Use
 | ||
| # JavaScript 1.6's **some**, if it exists.
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| _.some = (obj, iterator, context) ->
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|   iterator ||= _.identity
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|   return obj.some iterator, context if nativeSome and obj.some is nativeSome
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|   result = false
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|   _.each obj, (value, index, list) ->
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|     _.breakLoop() if (result = iterator.call(context, value, index, list))
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|   result
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| 
 | ||
| 
 | ||
| # Determine if a given value is included in the array or object,
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| # based on `===`.
 | ||
| _.include = (obj, target) ->
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|   return _.indexOf(obj, target) isnt -1 if nativeIndexOf and obj.indexOf is nativeIndexOf
 | ||
|   return true for own key, val of obj when val is target
 | ||
|   false
 | ||
| 
 | ||
| 
 | ||
| # Invoke a method with arguments on every item in a collection.
 | ||
| _.invoke = (obj, method) ->
 | ||
|   args = _.rest arguments, 2
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|   (if method then val[method] else val).apply(val, args) for val in obj
 | ||
| 
 | ||
| 
 | ||
| # Convenience version of a common use case of **map**: fetching a property.
 | ||
| _.pluck = (obj, key) ->
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|   _.map(obj, (val) -> val[key])
 | ||
| 
 | ||
| 
 | ||
| # Return the maximum item or (item-based computation).
 | ||
| _.max = (obj, iterator, context) ->
 | ||
|   return Math.max.apply(Math, obj) if not iterator and _.isArray(obj)
 | ||
|   result = computed: -Infinity
 | ||
|   _.each obj, (value, index, list) ->
 | ||
|     computed = if iterator then iterator.call(context, value, index, list) else value
 | ||
|     computed >= result.computed and (result = {value: value, computed: computed})
 | ||
|   result.value
 | ||
| 
 | ||
| 
 | ||
| # Return the minimum element (or element-based computation).
 | ||
| _.min = (obj, iterator, context) ->
 | ||
|   return Math.min.apply(Math, obj) if not iterator and _.isArray(obj)
 | ||
|   result = computed: Infinity
 | ||
|   _.each obj, (value, index, list) ->
 | ||
|     computed = if iterator then iterator.call(context, value, index, list) else value
 | ||
|     computed < result.computed and (result = {value: value, computed: computed})
 | ||
|   result.value
 | ||
| 
 | ||
| 
 | ||
| # Sort the object's values by a criterion produced by an iterator.
 | ||
| _.sortBy = (obj, iterator, context) ->
 | ||
|   _.pluck(((_.map obj, (value, index, list) ->
 | ||
|     {value: value, criteria: iterator.call(context, value, index, list)}
 | ||
|   ).sort((left, right) ->
 | ||
|     a = left.criteria; b = right.criteria
 | ||
|     if a < b then -1 else if a > b then 1 else 0
 | ||
|   )), 'value')
 | ||
| 
 | ||
| 
 | ||
| # Use a comparator function to figure out at what index an object should
 | ||
| # be inserted so as to maintain order. Uses binary search.
 | ||
| _.sortedIndex = (array, obj, iterator) ->
 | ||
|   iterator ||= _.identity
 | ||
|   low = 0
 | ||
|   high = array.length
 | ||
|   while low < high
 | ||
|     mid = (low + high) >> 1
 | ||
|     if iterator(array[mid]) < iterator(obj) then low = mid + 1 else high = mid
 | ||
|   low
 | ||
| 
 | ||
| 
 | ||
| # Convert anything iterable into a real, live array.
 | ||
| _.toArray = (iterable) ->
 | ||
|   return [] if (!iterable)
 | ||
|   return iterable.toArray() if (iterable.toArray)
 | ||
|   return iterable if (_.isArray(iterable))
 | ||
|   return slice.call(iterable) if (_.isArguments(iterable))
 | ||
|   _.values(iterable)
 | ||
| 
 | ||
| 
 | ||
| # Return the number of elements in an object.
 | ||
| _.size = (obj) -> _.toArray(obj).length
 | ||
| 
 | ||
| 
 | ||
| # Array Functions
 | ||
| # ---------------
 | ||
| 
 | ||
| # Get the first element of an array. Passing `n` will return the first N
 | ||
| # values in the array. Aliased as **head**. The `guard` check allows it to work
 | ||
| # with **map**.
 | ||
| _.first = (array, n, guard) ->
 | ||
|   if n and not guard then slice.call(array, 0, n) else array[0]
 | ||
| 
 | ||
| 
 | ||
| # Returns everything but the first entry of the array. Aliased as **tail**.
 | ||
| # Especially useful on the arguments object. Passing an `index` will return
 | ||
| # the rest of the values in the array from that index onward. The `guard`
 | ||
| # check allows it to work with **map**.
 | ||
| _.rest = (array, index, guard) ->
 | ||
|   slice.call(array, if _.isUndefined(index) or guard then 1 else index)
 | ||
| 
 | ||
| 
 | ||
| # Get the last element of an array.
 | ||
| _.last = (array) -> array[array.length - 1]
 | ||
| 
 | ||
| 
 | ||
| # Trim out all falsy values from an array.
 | ||
| _.compact = (array) -> item for item in array when item
 | ||
| 
 | ||
| 
 | ||
| # Return a completely flattened version of an array.
 | ||
| _.flatten = (array) ->
 | ||
|   _.reduce array, (memo, value) ->
 | ||
|     return memo.concat(_.flatten(value)) if _.isArray value
 | ||
|     memo.push value
 | ||
|     memo
 | ||
|   , []
 | ||
| 
 | ||
| 
 | ||
| # Return a version of the array that does not contain the specified value(s).
 | ||
| _.without = (array) ->
 | ||
|   values = _.rest arguments
 | ||
|   val for val in _.toArray(array) when not _.include values, val
 | ||
| 
 | ||
| 
 | ||
| # Produce a duplicate-free version of the array. If the array has already
 | ||
| # been sorted, you have the option of using a faster algorithm.
 | ||
| _.uniq = (array, isSorted) ->
 | ||
|   memo = []
 | ||
|   for el, i in _.toArray array
 | ||
|     memo.push el if i is 0 || (if isSorted is true then _.last(memo) isnt el else not _.include(memo, el))
 | ||
|   memo
 | ||
| 
 | ||
| 
 | ||
| # Produce an array that contains every item shared between all the
 | ||
| # passed-in arrays.
 | ||
| _.intersect = (array) ->
 | ||
|   rest = _.rest arguments
 | ||
|   _.select _.uniq(array), (item) ->
 | ||
|     _.all rest, (other) ->
 | ||
|       _.indexOf(other, item) >= 0
 | ||
| 
 | ||
| 
 | ||
| # Zip together multiple lists into a single array -- elements that share
 | ||
| # an index go together.
 | ||
| _.zip = ->
 | ||
|   length = _.max _.pluck arguments, 'length'
 | ||
|   results = new Array length
 | ||
|   for i in [0...length]
 | ||
|     results[i] = _.pluck arguments, String i
 | ||
|   results
 | ||
| 
 | ||
| 
 | ||
| # If the browser doesn't supply us with **indexOf** (I'm looking at you, MSIE),
 | ||
| # we need this function. Return the position of the first occurrence of an
 | ||
| # item in an array, or -1 if the item is not included in the array.
 | ||
| _.indexOf = (array, item) ->
 | ||
|   return array.indexOf item if nativeIndexOf and array.indexOf is nativeIndexOf
 | ||
|   i = 0; l = array.length
 | ||
|   while l - i
 | ||
|     if array[i] is item then return i else i++
 | ||
|   -1
 | ||
| 
 | ||
| 
 | ||
| # Provide JavaScript 1.6's **lastIndexOf**, delegating to the native function,
 | ||
| # if possible.
 | ||
| _.lastIndexOf = (array, item) ->
 | ||
|   return array.lastIndexOf(item) if nativeLastIndexOf and array.lastIndexOf is nativeLastIndexOf
 | ||
|   i = array.length
 | ||
|   while i
 | ||
|     if array[i] is item then return i else i--
 | ||
|   -1
 | ||
| 
 | ||
| 
 | ||
| # Generate an integer Array containing an arithmetic progression. A port of
 | ||
| # [the native Python **range** function](http://docs.python.org/library/functions.html#range).
 | ||
| _.range = (start, stop, step) ->
 | ||
|   a = arguments
 | ||
|   solo = a.length <= 1
 | ||
|   i = start = if solo then 0 else a[0]
 | ||
|   stop = if solo then a[0] else a[1]
 | ||
|   step = a[2] or 1
 | ||
|   len = Math.ceil((stop - start) / step)
 | ||
|   return [] if len <= 0
 | ||
|   range = new Array len
 | ||
|   idx = 0
 | ||
|   loop
 | ||
|     return range if (if step > 0 then i - stop else stop - i) >= 0
 | ||
|     range[idx] = i
 | ||
|     idx++
 | ||
|     i+= step
 | ||
| 
 | ||
| 
 | ||
| # Function Functions
 | ||
| # ------------------
 | ||
| 
 | ||
| # Create a function bound to a given object (assigning `this`, and arguments,
 | ||
| # optionally). Binding with arguments is also known as **curry**.
 | ||
| _.bind = (func, obj) ->
 | ||
|   args = _.rest arguments, 2
 | ||
|   -> func.apply obj or root, args.concat arguments
 | ||
| 
 | ||
| 
 | ||
| # Bind all of an object's methods to that object. Useful for ensuring that
 | ||
| # all callbacks defined on an object belong to it.
 | ||
| _.bindAll = (obj) ->
 | ||
|   funcs = if arguments.length > 1 then _.rest(arguments) else _.functions(obj)
 | ||
|   _.each funcs, (f) -> obj[f] = _.bind obj[f], obj
 | ||
|   obj
 | ||
| 
 | ||
| 
 | ||
| # Delays a function for the given number of milliseconds, and then calls
 | ||
| # it with the arguments supplied.
 | ||
| _.delay = (func, wait) ->
 | ||
|   args = _.rest arguments, 2
 | ||
|   setTimeout((-> func.apply(func, args)), wait)
 | ||
| 
 | ||
| 
 | ||
| # Memoize an expensive function by storing its results.
 | ||
| _.memoize = (func, hasher) ->
 | ||
|   memo = {}
 | ||
|   hasher or= _.identity
 | ||
|   ->
 | ||
|     key = hasher.apply this, arguments
 | ||
|     return memo[key] if key of memo
 | ||
|     memo[key] = func.apply this, arguments
 | ||
| 
 | ||
| 
 | ||
| # Defers a function, scheduling it to run after the current call stack has
 | ||
| # cleared.
 | ||
| _.defer = (func) ->
 | ||
|   _.delay.apply _, [func, 1].concat _.rest arguments
 | ||
| 
 | ||
| 
 | ||
| # Returns the first function passed as an argument to the second,
 | ||
| # allowing you to adjust arguments, run code before and after, and
 | ||
| # conditionally execute the original function.
 | ||
| _.wrap = (func, wrapper) ->
 | ||
|   -> wrapper.apply wrapper, [func].concat arguments
 | ||
| 
 | ||
| 
 | ||
| # Returns a function that is the composition of a list of functions, each
 | ||
| # consuming the return value of the function that follows.
 | ||
| _.compose = ->
 | ||
|   funcs = arguments
 | ||
|   ->
 | ||
|     args = arguments
 | ||
|     for i in [funcs.length - 1..0] by -1
 | ||
|       args = [funcs[i].apply(this, args)]
 | ||
|     args[0]
 | ||
| 
 | ||
| 
 | ||
| # Object Functions
 | ||
| # ----------------
 | ||
| 
 | ||
| # Retrieve the names of an object's properties.
 | ||
| _.keys = nativeKeys or (obj) ->
 | ||
|   return _.range 0, obj.length if _.isArray(obj)
 | ||
|   key for key, val of obj
 | ||
| 
 | ||
| 
 | ||
| # Retrieve the values of an object's properties.
 | ||
| _.values = (obj) ->
 | ||
|   _.map obj, _.identity
 | ||
| 
 | ||
| 
 | ||
| # Return a sorted list of the function names available in Underscore.
 | ||
| _.functions = (obj) ->
 | ||
|   _.filter(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
 | ||
| 
 | ||
| 
 | ||
| # Extend a given object with all of the properties in a source object.
 | ||
| _.extend = (obj) ->
 | ||
|   for source in _.rest(arguments)
 | ||
|     obj[key] = val for key, val of source
 | ||
|   obj
 | ||
| 
 | ||
| 
 | ||
| # Create a (shallow-cloned) duplicate of an object.
 | ||
| _.clone = (obj) ->
 | ||
|   return obj.slice 0 if _.isArray obj
 | ||
|   _.extend {}, obj
 | ||
| 
 | ||
| 
 | ||
| # Invokes interceptor with the obj, and then returns obj.
 | ||
| # The primary purpose of this method is to "tap into" a method chain,
 | ||
| # in order to perform operations on intermediate results within
 | ||
|  the chain.
 | ||
| _.tap = (obj, interceptor) ->
 | ||
|   interceptor obj
 | ||
|   obj
 | ||
| 
 | ||
| 
 | ||
| # Perform a deep comparison to check if two objects are equal.
 | ||
| _.isEqual = (a, b) ->
 | ||
|   # Check object identity.
 | ||
|   return true if a is b
 | ||
|   # Different types?
 | ||
|   atype = typeof(a); btype = typeof(b)
 | ||
|   return false if atype isnt btype
 | ||
|   # Basic equality test (watch out for coercions).
 | ||
|   return true if `a == b`
 | ||
|   # One is falsy and the other truthy.
 | ||
|   return false if (!a and b) or (a and !b)
 | ||
|   # One of them implements an `isEqual()`?
 | ||
|   return a.isEqual(b) if a.isEqual
 | ||
|   # Check dates' integer values.
 | ||
|   return a.getTime() is b.getTime() if _.isDate(a) and _.isDate(b)
 | ||
|   # Both are NaN?
 | ||
|   return false if _.isNaN(a) and _.isNaN(b)
 | ||
|   # Compare regular expressions.
 | ||
|   if _.isRegExp(a) and _.isRegExp(b)
 | ||
|     return a.source is b.source and
 | ||
|            a.global is b.global and
 | ||
|            a.ignoreCase is b.ignoreCase and
 | ||
|            a.multiline is b.multiline
 | ||
|   # If a is not an object by this point, we can't handle it.
 | ||
|   return false if atype isnt 'object'
 | ||
|   # Check for different array lengths before comparing contents.
 | ||
|   return false if a.length and (a.length isnt b.length)
 | ||
|   # Nothing else worked, deep compare the contents.
 | ||
|   aKeys = _.keys(a); bKeys = _.keys(b)
 | ||
|   # Different object sizes?
 | ||
|   return false if aKeys.length isnt bKeys.length
 | ||
|   # Recursive comparison of contents.
 | ||
|   return false for key, val of a when !(key of b) or !_.isEqual(val, b[key])
 | ||
|   true
 | ||
| 
 | ||
| 
 | ||
| # Is a given array or object empty?
 | ||
| _.isEmpty = (obj) ->
 | ||
|   return obj.length is 0 if _.isArray(obj) or _.isString(obj)
 | ||
|   return false for own key of obj
 | ||
|   true
 | ||
| 
 | ||
| 
 | ||
| # Is a given value a DOM element?
 | ||
| _.isElement = (obj) -> obj and obj.nodeType is 1
 | ||
| 
 | ||
| 
 | ||
| # Is a given value an array?
 | ||
| _.isArray = nativeIsArray or (obj) -> !!(obj and obj.concat and obj.unshift and not obj.callee)
 | ||
| 
 | ||
| 
 | ||
| # Is a given variable an arguments object?
 | ||
| _.isArguments = (obj) -> obj and obj.callee
 | ||
| 
 | ||
| 
 | ||
| # Is the given value a function?
 | ||
| _.isFunction = (obj) -> !!(obj and obj.constructor and obj.call and obj.apply)
 | ||
| 
 | ||
| 
 | ||
| # Is the given value a string?
 | ||
| _.isString = (obj) -> !!(obj is '' or (obj and obj.charCodeAt and obj.substr))
 | ||
| 
 | ||
| 
 | ||
| # Is a given value a number?
 | ||
| _.isNumber = (obj) -> (obj is +obj) or toString.call(obj) is '[object Number]'
 | ||
| 
 | ||
| 
 | ||
| # Is a given value a boolean?
 | ||
| _.isBoolean = (obj) -> obj is true or obj is false
 | ||
| 
 | ||
| 
 | ||
| # Is a given value a Date?
 | ||
| _.isDate = (obj) -> !!(obj and obj.getTimezoneOffset and obj.setUTCFullYear)
 | ||
| 
 | ||
| 
 | ||
| # Is the given value a regular expression?
 | ||
| _.isRegExp = (obj) -> !!(obj and obj.exec and (obj.ignoreCase or obj.ignoreCase is false))
 | ||
| 
 | ||
| 
 | ||
| # Is the given value NaN -- this one is interesting. `NaN != NaN`, and
 | ||
| # `isNaN(undefined) == true`, so we make sure it's a number first.
 | ||
| _.isNaN = (obj) -> _.isNumber(obj) and window.isNaN(obj)
 | ||
| 
 | ||
| 
 | ||
| # Is a given value equal to null?
 | ||
| _.isNull = (obj) -> obj is null
 | ||
| 
 | ||
| 
 | ||
| # Is a given variable undefined?
 | ||
| _.isUndefined = (obj) -> typeof obj is 'undefined'
 | ||
| 
 | ||
| 
 | ||
| # Utility Functions
 | ||
| # -----------------
 | ||
| 
 | ||
| # Run Underscore.js in noConflict mode, returning the `_` variable to its
 | ||
| # previous owner. Returns a reference to the Underscore object.
 | ||
| _.noConflict = ->
 | ||
|   root._ = previousUnderscore
 | ||
|   this
 | ||
| 
 | ||
| 
 | ||
| # Keep the identity function around for default iterators.
 | ||
| _.identity = (value) -> value
 | ||
| 
 | ||
| 
 | ||
| # Run a function `n` times.
 | ||
| _.times = (n, iterator, context) ->
 | ||
|   iterator.call context, i for i in [0...n]
 | ||
| 
 | ||
| 
 | ||
| # Break out of the middle of an iteration.
 | ||
| _.breakLoop = -> throw breaker
 | ||
| 
 | ||
| 
 | ||
| # Add your own custom functions to the Underscore object, ensuring that
 | ||
| # they're correctly added to the OOP wrapper as well.
 | ||
| _.mixin = (obj) ->
 | ||
|   for name in _.functions(obj)
 | ||
|     addToWrapper name, _[name] = obj[name]
 | ||
| 
 | ||
| 
 | ||
| # Generate a unique integer id (unique within the entire client session).
 | ||
| # Useful for temporary DOM ids.
 | ||
| idCounter = 0
 | ||
| _.uniqueId = (prefix) ->
 | ||
|   (prefix or '') + idCounter++
 | ||
| 
 | ||
| 
 | ||
| # By default, Underscore uses **ERB**-style template delimiters, change the
 | ||
| # following template settings to use alternative delimiters.
 | ||
| _.templateSettings = {
 | ||
|   start: '<%'
 | ||
|   end: '%>'
 | ||
|   interpolate: /<%=(.+?)%>/g
 | ||
| }
 | ||
| 
 | ||
| 
 | ||
| # JavaScript templating a-la **ERB**, pilfered from John Resig's
 | ||
| # *Secrets of the JavaScript Ninja*, page 83.
 | ||
| # Single-quote fix from Rick Strahl.
 | ||
| # With alterations for arbitrary delimiters, and to preserve whitespace.
 | ||
| _.template = (str, data) ->
 | ||
|   c = _.templateSettings
 | ||
|   endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g")
 | ||
|   fn = new Function 'obj',
 | ||
|     'var p=[],print=function(){p.push.apply(p,arguments);};' +
 | ||
|     'with(obj||{}){p.push(\'' +
 | ||
|     str.replace(/\r/g, '\\r')
 | ||
|        .replace(/\n/g, '\\n')
 | ||
|        .replace(/\t/g, '\\t')
 | ||
|        .replace(endMatch,"<22><><EFBFBD>")
 | ||
|        .split("'").join("\\'")
 | ||
|        .split("<22><><EFBFBD>").join("'")
 | ||
|        .replace(c.interpolate, "',$1,'")
 | ||
|        .split(c.start).join("');")
 | ||
|        .split(c.end).join("p.push('") +
 | ||
|        "');}return p.join('');"
 | ||
|   if data then fn(data) else fn
 | ||
| 
 | ||
| 
 | ||
| # Aliases
 | ||
| # -------
 | ||
| 
 | ||
| _.forEach = _.each
 | ||
| _.foldl = _.inject = _.reduce
 | ||
| _.foldr = _.reduceRight
 | ||
| _.select = _.filter
 | ||
| _.all = _.every
 | ||
| _.any = _.some
 | ||
| _.contains = _.include
 | ||
| _.head = _.first
 | ||
| _.tail = _.rest
 | ||
| _.methods = _.functions
 | ||
| 
 | ||
| 
 | ||
| # Setup the OOP Wrapper
 | ||
| # ---------------------
 | ||
| 
 | ||
| # If Underscore is called as a function, it returns a wrapped object that
 | ||
| # can be used OO-style. This wrapper holds altered versions of all the
 | ||
| # underscore functions. Wrapped objects may be chained.
 | ||
| wrapper = (obj) ->
 | ||
|   this._wrapped = obj
 | ||
|   this
 | ||
| 
 | ||
| 
 | ||
| # Helper function to continue chaining intermediate results.
 | ||
| result = (obj, chain) ->
 | ||
|   if chain then _(obj).chain() else obj
 | ||
| 
 | ||
| 
 | ||
| # A method to easily add functions to the OOP wrapper.
 | ||
| addToWrapper = (name, func) ->
 | ||
|   wrapper.prototype[name] = ->
 | ||
|     args = _.toArray arguments
 | ||
|     unshift.call args, this._wrapped
 | ||
|     result func.apply(_, args), this._chain
 | ||
| 
 | ||
| 
 | ||
| # Add all ofthe Underscore functions to the wrapper object.
 | ||
| _.mixin _
 | ||
| 
 | ||
| 
 | ||
| # Add all mutator Array functions to the wrapper.
 | ||
| _.each ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], (name) ->
 | ||
|   method = Array.prototype[name]
 | ||
|   wrapper.prototype[name] = ->
 | ||
|     method.apply(this._wrapped, arguments)
 | ||
|     result(this._wrapped, this._chain)
 | ||
| 
 | ||
| 
 | ||
| # Add all accessor Array functions to the wrapper.
 | ||
| _.each ['concat', 'join', 'slice'], (name) ->
 | ||
|   method = Array.prototype[name]
 | ||
|   wrapper.prototype[name] = ->
 | ||
|     result(method.apply(this._wrapped, arguments), this._chain)
 | ||
| 
 | ||
| 
 | ||
| # Start chaining a wrapped Underscore object.
 | ||
| wrapper::chain = ->
 | ||
|   this._chain = true
 | ||
|   this
 | ||
| 
 | ||
| 
 | ||
| # Extracts the result from a wrapped and chained object.
 | ||
| wrapper::value = -> this._wrapped
 | ||
| </textarea></form>
 | ||
|     <script>
 | ||
|       var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
 | ||
|     </script>
 | ||
| 
 | ||
|     <p><strong>MIME types defined:</strong> <code>application/vnd.coffeescript</code>, <code>text/coffeescript</code>, <code>text/x-coffeescript</code>.</p>
 | ||
| 
 | ||
|     <p>The CoffeeScript mode was written by Jeff Pickhardt.</p>
 | ||
| 
 | ||
|   </article>
 | 
