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    25  <article>
    26  <h2>CoffeeScript mode</h2>
    27  <form><textarea id="code" name="code">
    28  # CoffeeScript mode for CodeMirror
    29  # Copyright (c) 2011 Jeff Pickhardt, released under
    30  # the MIT License.
    31  #
    32  # Modified from the Python CodeMirror mode, which also is 
    33  # under the MIT License Copyright (c) 2010 Timothy Farrell.
    34  #
    35  # The following script, Underscore.coffee, is used to 
    36  # demonstrate CoffeeScript mode for CodeMirror.
    37  #
    38  # To download CoffeeScript mode for CodeMirror, go to:
    39  # https://github.com/pickhardt/coffeescript-codemirror-mode
    40  
    41  # **Underscore.coffee
    42  # (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.**
    43  # Underscore is freely distributable under the terms of the
    44  # [MIT license](http://en.wikipedia.org/wiki/MIT_License).
    45  # Portions of Underscore are inspired by or borrowed from
    46  # [Prototype.js](http://prototypejs.org/api), Oliver Steele's
    47  # [Functional](http://osteele.com), and John Resig's
    48  # [Micro-Templating](http://ejohn.org).
    49  # For all details and documentation:
    50  # http://documentcloud.github.com/underscore/
    51  
    52  
    53  # Baseline setup
    54  # --------------
    55  
    56  # Establish the root object, `window` in the browser, or `global` on the server.
    57  root = this
    58  
    59  
    60  # Save the previous value of the `_` variable.
    61  previousUnderscore = root._
    62  
    63  ### Multiline
    64      comment
    65  ###
    66  
    67  # Establish the object that gets thrown to break out of a loop iteration.
    68  # `StopIteration` is SOP on Mozilla.
    69  breaker = if typeof(StopIteration) is 'undefined' then '__break__' else StopIteration
    70  
    71  
    72  #### Docco style single line comment (title)
    73  
    74  
    75  # Helper function to escape **RegExp** contents, because JS doesn't have one.
    76  escapeRegExp = (string) -> string.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1')
    77  
    78  
    79  # Save bytes in the minified (but not gzipped) version:
    80  ArrayProto = Array.prototype
    81  ObjProto = Object.prototype
    82  
    83  
    84  # Create quick reference variables for speed access to core prototypes.
    85  slice = ArrayProto.slice
    86  unshift = ArrayProto.unshift
    87  toString = ObjProto.toString
    88  hasOwnProperty = ObjProto.hasOwnProperty
    89  propertyIsEnumerable = ObjProto.propertyIsEnumerable
    90  
    91  
    92  # All **ECMA5** native implementations we hope to use are declared here.
    93  nativeForEach = ArrayProto.forEach
    94  nativeMap = ArrayProto.map
    95  nativeReduce = ArrayProto.reduce
    96  nativeReduceRight = ArrayProto.reduceRight
    97  nativeFilter = ArrayProto.filter
    98  nativeEvery = ArrayProto.every
    99  nativeSome = ArrayProto.some
   100  nativeIndexOf = ArrayProto.indexOf
   101  nativeLastIndexOf = ArrayProto.lastIndexOf
   102  nativeIsArray = Array.isArray
   103  nativeKeys = Object.keys
   104  
   105  
   106  # Create a safe reference to the Underscore object for use below.
   107  _ = (obj) -> new wrapper(obj)
   108  
   109  
   110  # Export the Underscore object for **CommonJS**.
   111  if typeof(exports) != 'undefined' then exports._ = _
   112  
   113  
   114  # Export Underscore to global scope.
   115  root._ = _
   116  
   117  
   118  # Current version.
   119  _.VERSION = '1.1.0'
   120  
   121  
   122  # Collection Functions
   123  # --------------------
   124  
   125  # The cornerstone, an **each** implementation.
   126  # Handles objects implementing **forEach**, arrays, and raw objects.
   127  _.each = (obj, iterator, context) ->
   128    try
   129      if nativeForEach and obj.forEach is nativeForEach
   130        obj.forEach iterator, context
   131      else if _.isNumber obj.length
   132        iterator.call context, obj[i], i, obj for i in [0...obj.length]
   133      else
   134        iterator.call context, val, key, obj for own key, val of obj
   135    catch e
   136      throw e if e isnt breaker
   137    obj
   138  
   139  
   140  # Return the results of applying the iterator to each element. Use JavaScript
   141  # 1.6's version of **map**, if possible.
   142  _.map = (obj, iterator, context) ->
   143    return obj.map(iterator, context) if nativeMap and obj.map is nativeMap
   144    results = []
   145    _.each obj, (value, index, list) ->
   146      results.push iterator.call context, value, index, list
   147    results
   148  
   149  
   150  # **Reduce** builds up a single result from a list of values. Also known as
   151  # **inject**, or **foldl**. Uses JavaScript 1.8's version of **reduce**, if possible.
   152  _.reduce = (obj, iterator, memo, context) ->
   153    if nativeReduce and obj.reduce is nativeReduce
   154      iterator = _.bind iterator, context if context
   155      return obj.reduce iterator, memo
   156    _.each obj, (value, index, list) ->
   157      memo = iterator.call context, memo, value, index, list
   158    memo
   159  
   160  
   161  # The right-associative version of **reduce**, also known as **foldr**. Uses
   162  # JavaScript 1.8's version of **reduceRight**, if available.
   163  _.reduceRight = (obj, iterator, memo, context) ->
   164    if nativeReduceRight and obj.reduceRight is nativeReduceRight
   165      iterator = _.bind iterator, context if context
   166      return obj.reduceRight iterator, memo
   167    reversed = _.clone(_.toArray(obj)).reverse()
   168    _.reduce reversed, iterator, memo, context
   169  
   170  
   171  # Return the first value which passes a truth test.
   172  _.detect = (obj, iterator, context) ->
   173    result = null
   174    _.each obj, (value, index, list) ->
   175      if iterator.call context, value, index, list
   176        result = value
   177        _.breakLoop()
   178    result
   179  
   180  
   181  # Return all the elements that pass a truth test. Use JavaScript 1.6's
   182  # **filter**, if it exists.
   183  _.filter = (obj, iterator, context) ->
   184    return obj.filter iterator, context if nativeFilter and obj.filter is nativeFilter
   185    results = []
   186    _.each obj, (value, index, list) ->
   187      results.push value if iterator.call context, value, index, list
   188    results
   189  
   190  
   191  # Return all the elements for which a truth test fails.
   192  _.reject = (obj, iterator, context) ->
   193    results = []
   194    _.each obj, (value, index, list) ->
   195      results.push value if not iterator.call context, value, index, list
   196    results
   197  
   198  
   199  # Determine whether all of the elements match a truth test. Delegate to
   200  # JavaScript 1.6's **every**, if it is present.
   201  _.every = (obj, iterator, context) ->
   202    iterator ||= _.identity
   203    return obj.every iterator, context if nativeEvery and obj.every is nativeEvery
   204    result = true
   205    _.each obj, (value, index, list) ->
   206      _.breakLoop() unless (result = result and iterator.call(context, value, index, list))
   207    result
   208  
   209  
   210  # Determine if at least one element in the object matches a truth test. Use
   211  # JavaScript 1.6's **some**, if it exists.
   212  _.some = (obj, iterator, context) ->
   213    iterator ||= _.identity
   214    return obj.some iterator, context if nativeSome and obj.some is nativeSome
   215    result = false
   216    _.each obj, (value, index, list) ->
   217      _.breakLoop() if (result = iterator.call(context, value, index, list))
   218    result
   219  
   220  
   221  # Determine if a given value is included in the array or object,
   222  # based on `===`.
   223  _.include = (obj, target) ->
   224    return _.indexOf(obj, target) isnt -1 if nativeIndexOf and obj.indexOf is nativeIndexOf
   225    return true for own key, val of obj when val is target
   226    false
   227  
   228  
   229  # Invoke a method with arguments on every item in a collection.
   230  _.invoke = (obj, method) ->
   231    args = _.rest arguments, 2
   232    (if method then val[method] else val).apply(val, args) for val in obj
   233  
   234  
   235  # Convenience version of a common use case of **map**: fetching a property.
   236  _.pluck = (obj, key) ->
   237    _.map(obj, (val) -> val[key])
   238  
   239  
   240  # Return the maximum item or (item-based computation).
   241  _.max = (obj, iterator, context) ->
   242    return Math.max.apply(Math, obj) if not iterator and _.isArray(obj)
   243    result = computed: -Infinity
   244    _.each obj, (value, index, list) ->
   245      computed = if iterator then iterator.call(context, value, index, list) else value
   246      computed >= result.computed and (result = {value: value, computed: computed})
   247    result.value
   248  
   249  
   250  # Return the minimum element (or element-based computation).
   251  _.min = (obj, iterator, context) ->
   252    return Math.min.apply(Math, obj) if not iterator and _.isArray(obj)
   253    result = computed: Infinity
   254    _.each obj, (value, index, list) ->
   255      computed = if iterator then iterator.call(context, value, index, list) else value
   256      computed < result.computed and (result = {value: value, computed: computed})
   257    result.value
   258  
   259  
   260  # Sort the object's values by a criterion produced by an iterator.
   261  _.sortBy = (obj, iterator, context) ->
   262    _.pluck(((_.map obj, (value, index, list) ->
   263      {value: value, criteria: iterator.call(context, value, index, list)}
   264    ).sort((left, right) ->
   265      a = left.criteria; b = right.criteria
   266      if a < b then -1 else if a > b then 1 else 0
   267    )), 'value')
   268  
   269  
   270  # Use a comparator function to figure out at what index an object should
   271  # be inserted so as to maintain order. Uses binary search.
   272  _.sortedIndex = (array, obj, iterator) ->
   273    iterator ||= _.identity
   274    low = 0
   275    high = array.length
   276    while low < high
   277      mid = (low + high) >> 1
   278      if iterator(array[mid]) < iterator(obj) then low = mid + 1 else high = mid
   279    low
   280  
   281  
   282  # Convert anything iterable into a real, live array.
   283  _.toArray = (iterable) ->
   284    return [] if (!iterable)
   285    return iterable.toArray() if (iterable.toArray)
   286    return iterable if (_.isArray(iterable))
   287    return slice.call(iterable) if (_.isArguments(iterable))
   288    _.values(iterable)
   289  
   290  
   291  # Return the number of elements in an object.
   292  _.size = (obj) -> _.toArray(obj).length
   293  
   294  
   295  # Array Functions
   296  # ---------------
   297  
   298  # Get the first element of an array. Passing `n` will return the first N
   299  # values in the array. Aliased as **head**. The `guard` check allows it to work
   300  # with **map**.
   301  _.first = (array, n, guard) ->
   302    if n and not guard then slice.call(array, 0, n) else array[0]
   303  
   304  
   305  # Returns everything but the first entry of the array. Aliased as **tail**.
   306  # Especially useful on the arguments object. Passing an `index` will return
   307  # the rest of the values in the array from that index onward. The `guard`
   308  # check allows it to work with **map**.
   309  _.rest = (array, index, guard) ->
   310    slice.call(array, if _.isUndefined(index) or guard then 1 else index)
   311  
   312  
   313  # Get the last element of an array.
   314  _.last = (array) -> array[array.length - 1]
   315  
   316  
   317  # Trim out all falsy values from an array.
   318  _.compact = (array) -> item for item in array when item
   319  
   320  
   321  # Return a completely flattened version of an array.
   322  _.flatten = (array) ->
   323    _.reduce array, (memo, value) ->
   324      return memo.concat(_.flatten(value)) if _.isArray value
   325      memo.push value
   326      memo
   327    , []
   328  
   329  
   330  # Return a version of the array that does not contain the specified value(s).
   331  _.without = (array) ->
   332    values = _.rest arguments
   333    val for val in _.toArray(array) when not _.include values, val
   334  
   335  
   336  # Produce a duplicate-free version of the array. If the array has already
   337  # been sorted, you have the option of using a faster algorithm.
   338  _.uniq = (array, isSorted) ->
   339    memo = []
   340    for el, i in _.toArray array
   341      memo.push el if i is 0 || (if isSorted is true then _.last(memo) isnt el else not _.include(memo, el))
   342    memo
   343  
   344  
   345  # Produce an array that contains every item shared between all the
   346  # passed-in arrays.
   347  _.intersect = (array) ->
   348    rest = _.rest arguments
   349    _.select _.uniq(array), (item) ->
   350      _.all rest, (other) ->
   351        _.indexOf(other, item) >= 0
   352  
   353  
   354  # Zip together multiple lists into a single array -- elements that share
   355  # an index go together.
   356  _.zip = ->
   357    length = _.max _.pluck arguments, 'length'
   358    results = new Array length
   359    for i in [0...length]
   360      results[i] = _.pluck arguments, String i
   361    results
   362  
   363  
   364  # If the browser doesn't supply us with **indexOf** (I'm looking at you, MSIE),
   365  # we need this function. Return the position of the first occurrence of an
   366  # item in an array, or -1 if the item is not included in the array.
   367  _.indexOf = (array, item) ->
   368    return array.indexOf item if nativeIndexOf and array.indexOf is nativeIndexOf
   369    i = 0; l = array.length
   370    while l - i
   371      if array[i] is item then return i else i++
   372    -1
   373  
   374  
   375  # Provide JavaScript 1.6's **lastIndexOf**, delegating to the native function,
   376  # if possible.
   377  _.lastIndexOf = (array, item) ->
   378    return array.lastIndexOf(item) if nativeLastIndexOf and array.lastIndexOf is nativeLastIndexOf
   379    i = array.length
   380    while i
   381      if array[i] is item then return i else i--
   382    -1
   383  
   384  
   385  # Generate an integer Array containing an arithmetic progression. A port of
   386  # [the native Python **range** function](http://docs.python.org/library/functions.html#range).
   387  _.range = (start, stop, step) ->
   388    a = arguments
   389    solo = a.length <= 1
   390    i = start = if solo then 0 else a[0]
   391    stop = if solo then a[0] else a[1]
   392    step = a[2] or 1
   393    len = Math.ceil((stop - start) / step)
   394    return [] if len <= 0
   395    range = new Array len
   396    idx = 0
   397    loop
   398      return range if (if step > 0 then i - stop else stop - i) >= 0
   399      range[idx] = i
   400      idx++
   401      i+= step
   402  
   403  
   404  # Function Functions
   405  # ------------------
   406  
   407  # Create a function bound to a given object (assigning `this`, and arguments,
   408  # optionally). Binding with arguments is also known as **curry**.
   409  _.bind = (func, obj) ->
   410    args = _.rest arguments, 2
   411    -> func.apply obj or root, args.concat arguments
   412  
   413  
   414  # Bind all of an object's methods to that object. Useful for ensuring that
   415  # all callbacks defined on an object belong to it.
   416  _.bindAll = (obj) ->
   417    funcs = if arguments.length > 1 then _.rest(arguments) else _.functions(obj)
   418    _.each funcs, (f) -> obj[f] = _.bind obj[f], obj
   419    obj
   420  
   421  
   422  # Delays a function for the given number of milliseconds, and then calls
   423  # it with the arguments supplied.
   424  _.delay = (func, wait) ->
   425    args = _.rest arguments, 2
   426    setTimeout((-> func.apply(func, args)), wait)
   427  
   428  
   429  # Memoize an expensive function by storing its results.
   430  _.memoize = (func, hasher) ->
   431    memo = {}
   432    hasher or= _.identity
   433    ->
   434      key = hasher.apply this, arguments
   435      return memo[key] if key of memo
   436      memo[key] = func.apply this, arguments
   437  
   438  
   439  # Defers a function, scheduling it to run after the current call stack has
   440  # cleared.
   441  _.defer = (func) ->
   442    _.delay.apply _, [func, 1].concat _.rest arguments
   443  
   444  
   445  # Returns the first function passed as an argument to the second,
   446  # allowing you to adjust arguments, run code before and after, and
   447  # conditionally execute the original function.
   448  _.wrap = (func, wrapper) ->
   449    -> wrapper.apply wrapper, [func].concat arguments
   450  
   451  
   452  # Returns a function that is the composition of a list of functions, each
   453  # consuming the return value of the function that follows.
   454  _.compose = ->
   455    funcs = arguments
   456    ->
   457      args = arguments
   458      for i in [funcs.length - 1..0] by -1
   459        args = [funcs[i].apply(this, args)]
   460      args[0]
   461  
   462  
   463  # Object Functions
   464  # ----------------
   465  
   466  # Retrieve the names of an object's properties.
   467  _.keys = nativeKeys or (obj) ->
   468    return _.range 0, obj.length if _.isArray(obj)
   469    key for key, val of obj
   470  
   471  
   472  # Retrieve the values of an object's properties.
   473  _.values = (obj) ->
   474    _.map obj, _.identity
   475  
   476  
   477  # Return a sorted list of the function names available in Underscore.
   478  _.functions = (obj) ->
   479    _.filter(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
   480  
   481  
   482  # Extend a given object with all of the properties in a source object.
   483  _.extend = (obj) ->
   484    for source in _.rest(arguments)
   485      obj[key] = val for key, val of source
   486    obj
   487  
   488  
   489  # Create a (shallow-cloned) duplicate of an object.
   490  _.clone = (obj) ->
   491    return obj.slice 0 if _.isArray obj
   492    _.extend {}, obj
   493  
   494  
   495  # Invokes interceptor with the obj, and then returns obj.
   496  # The primary purpose of this method is to "tap into" a method chain,
   497  # in order to perform operations on intermediate results within
   498   the chain.
   499  _.tap = (obj, interceptor) ->
   500    interceptor obj
   501    obj
   502  
   503  
   504  # Perform a deep comparison to check if two objects are equal.
   505  _.isEqual = (a, b) ->
   506    # Check object identity.
   507    return true if a is b
   508    # Different types?
   509    atype = typeof(a); btype = typeof(b)
   510    return false if atype isnt btype
   511    # Basic equality test (watch out for coercions).
   512    return true if `a == b`
   513    # One is falsy and the other truthy.
   514    return false if (!a and b) or (a and !b)
   515    # One of them implements an `isEqual()`?
   516    return a.isEqual(b) if a.isEqual
   517    # Check dates' integer values.
   518    return a.getTime() is b.getTime() if _.isDate(a) and _.isDate(b)
   519    # Both are NaN?
   520    return false if _.isNaN(a) and _.isNaN(b)
   521    # Compare regular expressions.
   522    if _.isRegExp(a) and _.isRegExp(b)
   523      return a.source is b.source and
   524             a.global is b.global and
   525             a.ignoreCase is b.ignoreCase and
   526             a.multiline is b.multiline
   527    # If a is not an object by this point, we can't handle it.
   528    return false if atype isnt 'object'
   529    # Check for different array lengths before comparing contents.
   530    return false if a.length and (a.length isnt b.length)
   531    # Nothing else worked, deep compare the contents.
   532    aKeys = _.keys(a); bKeys = _.keys(b)
   533    # Different object sizes?
   534    return false if aKeys.length isnt bKeys.length
   535    # Recursive comparison of contents.
   536    return false for key, val of a when !(key of b) or !_.isEqual(val, b[key])
   537    true
   538  
   539  
   540  # Is a given array or object empty?
   541  _.isEmpty = (obj) ->
   542    return obj.length is 0 if _.isArray(obj) or _.isString(obj)
   543    return false for own key of obj
   544    true
   545  
   546  
   547  # Is a given value a DOM element?
   548  _.isElement = (obj) -> obj and obj.nodeType is 1
   549  
   550  
   551  # Is a given value an array?
   552  _.isArray = nativeIsArray or (obj) -> !!(obj and obj.concat and obj.unshift and not obj.callee)
   553  
   554  
   555  # Is a given variable an arguments object?
   556  _.isArguments = (obj) -> obj and obj.callee
   557  
   558  
   559  # Is the given value a function?
   560  _.isFunction = (obj) -> !!(obj and obj.constructor and obj.call and obj.apply)
   561  
   562  
   563  # Is the given value a string?
   564  _.isString = (obj) -> !!(obj is '' or (obj and obj.charCodeAt and obj.substr))
   565  
   566  
   567  # Is a given value a number?
   568  _.isNumber = (obj) -> (obj is +obj) or toString.call(obj) is '[object Number]'
   569  
   570  
   571  # Is a given value a boolean?
   572  _.isBoolean = (obj) -> obj is true or obj is false
   573  
   574  
   575  # Is a given value a Date?
   576  _.isDate = (obj) -> !!(obj and obj.getTimezoneOffset and obj.setUTCFullYear)
   577  
   578  
   579  # Is the given value a regular expression?
   580  _.isRegExp = (obj) -> !!(obj and obj.exec and (obj.ignoreCase or obj.ignoreCase is false))
   581  
   582  
   583  # Is the given value NaN -- this one is interesting. `NaN != NaN`, and
   584  # `isNaN(undefined) == true`, so we make sure it's a number first.
   585  _.isNaN = (obj) -> _.isNumber(obj) and window.isNaN(obj)
   586  
   587  
   588  # Is a given value equal to null?
   589  _.isNull = (obj) -> obj is null
   590  
   591  
   592  # Is a given variable undefined?
   593  _.isUndefined = (obj) -> typeof obj is 'undefined'
   594  
   595  
   596  # Utility Functions
   597  # -----------------
   598  
   599  # Run Underscore.js in noConflict mode, returning the `_` variable to its
   600  # previous owner. Returns a reference to the Underscore object.
   601  _.noConflict = ->
   602    root._ = previousUnderscore
   603    this
   604  
   605  
   606  # Keep the identity function around for default iterators.
   607  _.identity = (value) -> value
   608  
   609  
   610  # Run a function `n` times.
   611  _.times = (n, iterator, context) ->
   612    iterator.call context, i for i in [0...n]
   613  
   614  
   615  # Break out of the middle of an iteration.
   616  _.breakLoop = -> throw breaker
   617  
   618  
   619  # Add your own custom functions to the Underscore object, ensuring that
   620  # they're correctly added to the OOP wrapper as well.
   621  _.mixin = (obj) ->
   622    for name in _.functions(obj)
   623      addToWrapper name, _[name] = obj[name]
   624  
   625  
   626  # Generate a unique integer id (unique within the entire client session).
   627  # Useful for temporary DOM ids.
   628  idCounter = 0
   629  _.uniqueId = (prefix) ->
   630    (prefix or '') + idCounter++
   631  
   632  
   633  # By default, Underscore uses **ERB**-style template delimiters, change the
   634  # following template settings to use alternative delimiters.
   635  _.templateSettings = {
   636    start: '<%'
   637    end: '%>'
   638    interpolate: /<%=(.+?)%>/g
   639  }
   640  
   641  
   642  # JavaScript templating a-la **ERB**, pilfered from John Resig's
   643  # *Secrets of the JavaScript Ninja*, page 83.
   644  # Single-quote fix from Rick Strahl.
   645  # With alterations for arbitrary delimiters, and to preserve whitespace.
   646  _.template = (str, data) ->
   647    c = _.templateSettings
   648    endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g")
   649    fn = new Function 'obj',
   650      'var p=[],print=function(){p.push.apply(p,arguments);};' +
   651      'with(obj||{}){p.push(\'' +
   652      str.replace(/\r/g, '\\r')
   653         .replace(/\n/g, '\\n')
   654         .replace(/\t/g, '\\t')
   655         .replace(endMatch,"���")
   656         .split("'").join("\\'")
   657         .split("���").join("'")
   658         .replace(c.interpolate, "',$1,'")
   659         .split(c.start).join("');")
   660         .split(c.end).join("p.push('") +
   661         "');}return p.join('');"
   662    if data then fn(data) else fn
   663  
   664  
   665  # Aliases
   666  # -------
   667  
   668  _.forEach = _.each
   669  _.foldl = _.inject = _.reduce
   670  _.foldr = _.reduceRight
   671  _.select = _.filter
   672  _.all = _.every
   673  _.any = _.some
   674  _.contains = _.include
   675  _.head = _.first
   676  _.tail = _.rest
   677  _.methods = _.functions
   678  
   679  
   680  # Setup the OOP Wrapper
   681  # ---------------------
   682  
   683  # If Underscore is called as a function, it returns a wrapped object that
   684  # can be used OO-style. This wrapper holds altered versions of all the
   685  # underscore functions. Wrapped objects may be chained.
   686  wrapper = (obj) ->
   687    this._wrapped = obj
   688    this
   689  
   690  
   691  # Helper function to continue chaining intermediate results.
   692  result = (obj, chain) ->
   693    if chain then _(obj).chain() else obj
   694  
   695  
   696  # A method to easily add functions to the OOP wrapper.
   697  addToWrapper = (name, func) ->
   698    wrapper.prototype[name] = ->
   699      args = _.toArray arguments
   700      unshift.call args, this._wrapped
   701      result func.apply(_, args), this._chain
   702  
   703  
   704  # Add all ofthe Underscore functions to the wrapper object.
   705  _.mixin _
   706  
   707  
   708  # Add all mutator Array functions to the wrapper.
   709  _.each ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], (name) ->
   710    method = Array.prototype[name]
   711    wrapper.prototype[name] = ->
   712      method.apply(this._wrapped, arguments)
   713      result(this._wrapped, this._chain)
   714  
   715  
   716  # Add all accessor Array functions to the wrapper.
   717  _.each ['concat', 'join', 'slice'], (name) ->
   718    method = Array.prototype[name]
   719    wrapper.prototype[name] = ->
   720      result(method.apply(this._wrapped, arguments), this._chain)
   721  
   722  
   723  # Start chaining a wrapped Underscore object.
   724  wrapper::chain = ->
   725    this._chain = true
   726    this
   727  
   728  
   729  # Extracts the result from a wrapped and chained object.
   730  wrapper::value = -> this._wrapped
   731  </textarea></form>
   732      <script>
   733        var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
   734      </script>
   735  
   736      <p><strong>MIME types defined:</strong> <code>text/x-coffeescript</code>.</p>
   737  
   738      <p>The CoffeeScript mode was written by Jeff Pickhardt.</p>
   739  
   740    </article>