玛氪宕·梦魔(Markdown Memo),使用Markdown的云端备忘录,百度IFE的RIA启航班的不合格的作业,才……才没有什么阴谋呢!
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				| <!doctype html> | |
| 
 | |
| <title>CodeMirror: CoffeeScript mode</title> | |
| <meta charset="utf-8"/> | |
| <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="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a> | |
| 
 | |
|   <ul> | |
|     <li><a href="../../index.html">Home</a> | |
|     <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 | |
| # -------------- | |
| 
 | |
| # Establish the root object, `window` in the browser, or `global` on the server. | |
| root = this | |
| 
 | |
| 
 | |
| # Save the previous value of the `_` variable. | |
| previousUnderscore = root._ | |
| 
 | |
| ### Multiline | |
|     comment | |
| ### | |
| 
 | |
| # 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') | |
| 
 | |
| 
 | |
| # Save bytes in the minified (but not gzipped) version: | |
| ArrayProto = Array.prototype | |
| ObjProto = Object.prototype | |
| 
 | |
| 
 | |
| # Create quick reference variables for speed access to core prototypes. | |
| slice = ArrayProto.slice | |
| unshift = ArrayProto.unshift | |
| toString = ObjProto.toString | |
| hasOwnProperty = ObjProto.hasOwnProperty | |
| propertyIsEnumerable = ObjProto.propertyIsEnumerable | |
| 
 | |
| 
 | |
| # All **ECMA5** native implementations we hope to use are declared here. | |
| nativeForEach = ArrayProto.forEach | |
| nativeMap = ArrayProto.map | |
| nativeReduce = ArrayProto.reduce | |
| nativeReduceRight = ArrayProto.reduceRight | |
| nativeFilter = ArrayProto.filter | |
| nativeEvery = ArrayProto.every | |
| nativeSome = ArrayProto.some | |
| nativeIndexOf = ArrayProto.indexOf | |
| nativeLastIndexOf = ArrayProto.lastIndexOf | |
| nativeIsArray = Array.isArray | |
| nativeKeys = Object.keys | |
| 
 | |
| 
 | |
| # Create a safe reference to the Underscore object for use below. | |
| _ = (obj) -> new wrapper(obj) | |
| 
 | |
| 
 | |
| # Export the Underscore object for **CommonJS**. | |
| if typeof(exports) != 'undefined' then exports._ = _ | |
| 
 | |
| 
 | |
| # Export Underscore to global scope. | |
| root._ = _ | |
| 
 | |
| 
 | |
| # Current version. | |
| _.VERSION = '1.1.0' | |
| 
 | |
| 
 | |
| # Collection Functions | |
| # -------------------- | |
| 
 | |
| # The cornerstone, an **each** implementation. | |
| # Handles objects implementing **forEach**, arrays, and raw objects. | |
| _.each = (obj, iterator, context) -> | |
|   try | |
|     if nativeForEach and obj.forEach is nativeForEach | |
|       obj.forEach iterator, context | |
|     else if _.isNumber obj.length | |
|       iterator.call context, obj[i], i, obj for i in [0...obj.length] | |
|     else | |
|       iterator.call context, val, key, obj for own key, val of obj | |
|   catch e | |
|     throw e if e isnt breaker | |
|   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) -> | |
|   return obj.map(iterator, context) if nativeMap and obj.map is nativeMap | |
|   results = [] | |
|   _.each obj, (value, index, list) -> | |
|     results.push iterator.call context, value, index, list | |
|   results | |
| 
 | |
| 
 | |
| # **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. | |
| _.reduce = (obj, iterator, memo, context) -> | |
|   if nativeReduce and obj.reduce is nativeReduce | |
|     iterator = _.bind iterator, context if context | |
|     return obj.reduce iterator, memo | |
|   _.each obj, (value, index, list) -> | |
|     memo = iterator.call context, memo, value, index, list | |
|   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 | |
|     iterator = _.bind iterator, context if context | |
|     return obj.reduceRight iterator, memo | |
|   reversed = _.clone(_.toArray(obj)).reverse() | |
|   _.reduce reversed, iterator, memo, context | |
| 
 | |
| 
 | |
| # Return the first value which passes a truth test. | |
| _.detect = (obj, iterator, context) -> | |
|   result = null | |
|   _.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) -> | |
|   return obj.filter iterator, context if nativeFilter and obj.filter is nativeFilter | |
|   results = [] | |
|   _.each obj, (value, index, list) -> | |
|     results.push value if iterator.call context, value, index, list | |
|   results | |
| 
 | |
| 
 | |
| # Return all the elements for which a truth test fails. | |
| _.reject = (obj, iterator, context) -> | |
|   results = [] | |
|   _.each obj, (value, index, list) -> | |
|     results.push value if not iterator.call context, value, index, list | |
|   results | |
| 
 | |
| 
 | |
| # Determine whether all of the elements match a truth test. Delegate to | |
| # JavaScript 1.6's **every**, if it is present. | |
| _.every = (obj, iterator, context) -> | |
|   iterator ||= _.identity | |
|   return obj.every iterator, context if nativeEvery and obj.every is nativeEvery | |
|   result = true | |
|   _.each obj, (value, index, list) -> | |
|     _.breakLoop() unless (result = result and iterator.call(context, value, index, list)) | |
|   result | |
| 
 | |
| 
 | |
| # Determine if at least one element in the object matches a truth test. Use | |
| # JavaScript 1.6's **some**, if it exists. | |
| _.some = (obj, iterator, context) -> | |
|   iterator ||= _.identity | |
|   return obj.some iterator, context if nativeSome and obj.some is nativeSome | |
|   result = false | |
|   _.each obj, (value, index, list) -> | |
|     _.breakLoop() if (result = iterator.call(context, value, index, list)) | |
|   result | |
| 
 | |
| 
 | |
| # Determine if a given value is included in the array or object, | |
| # based on `===`. | |
| _.include = (obj, target) -> | |
|   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 | |
|   (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) -> | |
|   _.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,"���") | |
|        .split("'").join("\\'") | |
|        .split("���").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>text/x-coffeescript</code>.</p> | |
| 
 | |
|     <p>The CoffeeScript mode was written by Jeff Pickhardt.</p> | |
| 
 | |
|   </article>
 |