From c4d19cd1fa576308edf4bb3419186dd315eb1077 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 16 Feb 2010 18:39:31 -0500
Subject: [PATCH] removing underscore.js from lib, and from the docs page

---
 documentation/index.html.erb    |   7 +-
 index.html                      |   7 +-
 lib/coffee_script/underscore.js | 761 --------------------------------
 3 files changed, 6 insertions(+), 769 deletions(-)
 delete mode 100644 lib/coffee_script/underscore.js

diff --git a/documentation/index.html.erb b/documentation/index.html.erb
index 857fa62a..0a6160af 100644
--- a/documentation/index.html.erb
+++ b/documentation/index.html.erb
@@ -229,13 +229,13 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
 
     <p>
       Here's a live version of the CoffeeScript compiler, running within
-      your browser.<br /> Hit the <b>compile</b> button to generate JavaScript 
+      your browser.<br /> Hit the <b>compile</b> button to generate JavaScript
       on the right-hand side.
       You can also paste in any of the examples from below.
     </p>
 
     <div class="code repl_wrapper">
-      <textarea id="repl_source">reverse: (string) -> 
+      <textarea id="repl_source">reverse: (string) ->
   string.split('').reverse()
 
 print reverse 'tpircseeffoc'</textarea>
@@ -294,7 +294,7 @@ print reverse 'tpircseeffoc'</textarea>
       <b class="header">Assignment</b>
       Use a colon <tt>:</tt> to assign, as in
       <a href="http://json.org">JSON</a>. Equal signs are only needed for
-      mathy things. While colons are preferred, the two may be used interchangeably, 
+      mathy things. While colons are preferred, the two may be used interchangeably,
       even within object literals.
     </p>
     <%= code_for('assignment', 'greeting') %>
@@ -842,7 +842,6 @@ print reverse 'tpircseeffoc'</textarea>
 
   </div>
 
-  <script type="text/javascript" src="lib/coffee_script/underscore.js"></script>
   <script type="text/javascript" src="lib/coffee_script/rewriter.js"></script>
   <script type="text/javascript" src="lib/coffee_script/lexer.js"></script>
   <script type="text/javascript" src="lib/coffee_script/parser.js"></script>
diff --git a/index.html b/index.html
index fa40c321..15bae00e 100644
--- a/index.html
+++ b/index.html
@@ -326,13 +326,13 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
 
     <p>
       Here's a live version of the CoffeeScript compiler, running within
-      your browser.<br /> Hit the <b>compile</b> button to generate JavaScript 
+      your browser.<br /> Hit the <b>compile</b> button to generate JavaScript
       on the right-hand side.
       You can also paste in any of the examples from below.
     </p>
 
     <div class="code repl_wrapper">
-      <textarea id="repl_source">reverse: (string) -> 
+      <textarea id="repl_source">reverse: (string) ->
   string.split('').reverse()
 
 print reverse 'tpircseeffoc'</textarea>
@@ -407,7 +407,7 @@ cube = function cube(x) {
       <b class="header">Assignment</b>
       Use a colon <tt>:</tt> to assign, as in
       <a href="http://json.org">JSON</a>. Equal signs are only needed for
-      mathy things. While colons are preferred, the two may be used interchangeably, 
+      mathy things. While colons are preferred, the two may be used interchangeably,
       even within object literals.
     </p>
     <div class='code'><pre class="idle"><span class="FunctionName">greeting</span><span class="Keyword">:</span> <span class="String"><span class="String">&quot;</span>Hello CoffeeScript<span class="String">&quot;</span></span>
@@ -1713,7 +1713,6 @@ html <span class="Keyword">=</span> <span class="String"><span class="String">&q
 
   </div>
 
-  <script type="text/javascript" src="lib/coffee_script/underscore.js"></script>
   <script type="text/javascript" src="lib/coffee_script/rewriter.js"></script>
   <script type="text/javascript" src="lib/coffee_script/lexer.js"></script>
   <script type="text/javascript" src="lib/coffee_script/parser.js"></script>
diff --git a/lib/coffee_script/underscore.js b/lib/coffee_script/underscore.js
deleted file mode 100644
index 282b165d..00000000
--- a/lib/coffee_script/underscore.js
+++ /dev/null
@@ -1,761 +0,0 @@
-(function(){
-  var _, breaker, idCounter, previousUnderscore, result, root, slice, unshift, wrapper;
-  var __hasProp = Object.prototype.hasOwnProperty;
-  // Underscore.coffee
-  // (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
-  // Underscore is freely distributable under the terms of the MIT license.
-  // Portions of Underscore are inspired by or borrowed from Prototype.js,
-  // Oliver Steele's Functional, and John Resig's Micro-Templating.
-  // 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._;
-  // 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 = function wrapper(obj) {
-    this._wrapped = obj;
-    return this;
-  };
-  // Establish the object that gets thrown to break out of a loop iteration.
-  breaker = typeof (StopIteration) === 'undefined' ? '__break__' : StopIteration;
-  // Create a safe reference to the Underscore object forreference below.
-  _ = (root._ = function _(obj) {
-    return new wrapper(obj);
-  });
-  // Export the Underscore object for CommonJS.
-  typeof (exports) !== 'undefined' ? (exports._ = _) : null;
-  // Create quick reference variables for speed access to core prototypes.
-  slice = Array.prototype.slice;
-  unshift = Array.prototype.unshift;
-  toString = Object.prototype.toString;
-  hasOwnProperty = Object.prototype.hasOwnProperty;
-  propertyIsEnumerable = Object.prototype.propertyIsEnumerable;
-  // Current version.
-  _.VERSION = '0.5.8';
-  // ------------------------ Collection Functions: ---------------------------
-  // The cornerstone, an each implementation.
-  // Handles objects implementing forEach, arrays, and raw objects.
-  _.each = function each(obj, iterator, context) {
-    var _a, _b, _c, _d, _e, _f, i, index, key, val;
-    index = 0;
-    try {
-      if (obj.forEach) {
-        return obj.forEach(iterator, context);
-      }
-      if (_.isNumber(obj.length)) {
-        _a = []; _d = 0; _e = obj.length;
-        for (_c=0, i=_d; (_d <= _e ? i < _e : i > _e); (_d <= _e ? i += 1 : i -= 1), _c++) {
-          _a.push(iterator.call(context, obj[i], i, obj));
-        }
-        return _a;
-      }
-      _f = obj;
-      for (key in _f) if (__hasProp.call(_f, key)) {
-        val = _f[key];
-        iterator.call(context, val, key, obj);
-      }
-    } catch (e) {
-      if (e !== breaker) {
-        throw e;
-      }
-    }
-    return obj;
-  };
-  // Return the results of applying the iterator to each element. Use JavaScript
-  // 1.6's version of map, if possible.
-  _.map = function map(obj, iterator, context) {
-    var results;
-    if ((obj && _.isFunction(obj.map))) {
-      return obj.map(iterator, context);
-    }
-    results = [];
-    _.each(obj, function(value, index, list) {
-      return results.push(iterator.call(context, value, index, list));
-    });
-    return 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 = function reduce(obj, memo, iterator, context) {
-    if ((obj && _.isFunction(obj.reduce))) {
-      return obj.reduce(_.bind(iterator, context), memo);
-    }
-    _.each(obj, function(value, index, list) {
-      return memo = iterator.call(context, memo, value, index, list);
-    });
-    return memo;
-  };
-  // The right-associative version of reduce, also known as foldr. Uses
-  // JavaScript 1.8's version of reduceRight, if available.
-  _.reduceRight = function reduceRight(obj, memo, iterator, context) {
-    if ((obj && _.isFunction(obj.reduceRight))) {
-      return obj.reduceRight(_.bind(iterator, context), memo);
-    }
-    _.each(_.clone(_.toArray(obj)).reverse(), function(value, index) {
-      return memo = iterator.call(context, memo, value, index, obj);
-    });
-    return memo;
-  };
-  // Return the first value which passes a truth test.
-  _.detect = function detect(obj, iterator, context) {
-    var result;
-    result = null;
-    _.each(obj, function(value, index, list) {
-      if (iterator.call(context, value, index, list)) {
-        result = value;
-        return _.breakLoop();
-      }
-    });
-    return result;
-  };
-  // Return all the elements that pass a truth test. Use JavaScript 1.6's
-  // filter(), if it exists.
-  _.select = function select(obj, iterator, context) {
-    var results;
-    if (obj && _.isFunction(obj.filter)) {
-      return obj.filter(iterator, context);
-    }
-    results = [];
-    _.each(obj, function(value, index, list) {
-      if (iterator.call(context, value, index, list)) {
-        return results.push(value);
-      }
-    });
-    return results;
-  };
-  // Return all the elements for which a truth test fails.
-  _.reject = function reject(obj, iterator, context) {
-    var results;
-    results = [];
-    _.each(obj, function(value, index, list) {
-      if (!iterator.call(context, value, index, list)) {
-        return results.push(value);
-      }
-    });
-    return results;
-  };
-  // Determine whether all of the elements match a truth test. Delegate to
-  // JavaScript 1.6's every(), if it is present.
-  _.all = function all(obj, iterator, context) {
-    var result;
-    iterator = iterator || _.identity;
-    if (obj && _.isFunction(obj.every)) {
-      return obj.every(iterator, context);
-    }
-    result = true;
-    _.each(obj, function(value, index, list) {
-      if (!(((result = result && iterator.call(context, value, index, list))))) {
-        return _.breakLoop();
-      }
-    });
-    return result;
-  };
-  // Determine if at least one element in the object matches a truth test. Use
-  // JavaScript 1.6's some(), if it exists.
-  _.any = function any(obj, iterator, context) {
-    var result;
-    iterator = iterator || _.identity;
-    if (obj && _.isFunction(obj.some)) {
-      return obj.some(iterator, context);
-    }
-    result = false;
-    _.each(obj, function(value, index, list) {
-      if (((result = iterator.call(context, value, index, list)))) {
-        return _.breakLoop();
-      }
-    });
-    return result;
-  };
-  // Determine if a given value is included in the array or object,
-  // based on '==='.
-  _.include = function include(obj, target) {
-    var _a, key, val;
-    if (obj && _.isFunction(obj.indexOf)) {
-      return _.indexOf(obj, target) !== -1;
-    }
-    _a = obj;
-    for (key in _a) if (__hasProp.call(_a, key)) {
-      val = _a[key];
-      if (val === target) {
-        return true;
-      }
-    }
-    return false;
-  };
-  // Invoke a method with arguments on every item in a collection.
-  _.invoke = function invoke(obj, method) {
-    var _a, _b, _c, args, val;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    args = _.rest(arguments, 2);
-    _a = []; _b = obj;
-    for (_c = 0; _c < _b.length; _c++) {
-      val = _b[_c];
-      _a.push((method ? val[method] : val).apply(val, args));
-    }
-    return _a;
-  };
-  // Convenience version of a common use case of map: fetching a property.
-  _.pluck = function pluck(obj, key) {
-    return _.map(obj, (function(val) {
-      return val[key];
-    }));
-  };
-  // Return the maximum item or (item-based computation).
-  _.max = function max(obj, iterator, context) {
-    var result;
-    if (!iterator && _.isArray(obj)) {
-      return Math.max.apply(Math, obj);
-    }
-    result = {
-      computed: -Infinity
-    };
-    _.each(obj, function(value, index, list) {
-      var computed;
-      computed = iterator ? iterator.call(context, value, index, list) : value;
-      return computed >= result.computed && ((result = {
-        value: value,
-        computed: computed
-      }));
-    });
-    return result.value;
-  };
-  // Return the minimum element (or element-based computation).
-  _.min = function min(obj, iterator, context) {
-    var result;
-    if (!iterator && _.isArray(obj)) {
-      return Math.min.apply(Math, obj);
-    }
-    result = {
-      computed: Infinity
-    };
-    _.each(obj, function(value, index, list) {
-      var computed;
-      computed = iterator ? iterator.call(context, value, index, list) : value;
-      return computed < result.computed && ((result = {
-        value: value,
-        computed: computed
-      }));
-    });
-    return result.value;
-  };
-  // Sort the object's values by a criteria produced by an iterator.
-  _.sortBy = function sortBy(obj, iterator, context) {
-    return _.pluck(((_.map(obj, function(value, index, list) {
-      return {
-        value: value,
-        criteria: iterator.call(context, value, index, list)
-      };
-    })).sort(function(left, right) {
-      var a, b;
-      a = left.criteria;
-      b = right.criteria;
-      if (a < b) {
-        return -1;
-      } else if (a > b) {
-        return 1;
-      } else {
-        return 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 = function sortedIndex(array, obj, iterator) {
-    var high, low, mid;
-    iterator = iterator || _.identity;
-    low = 0;
-    high = array.length;
-    while (low < high) {
-      mid = (low + high) >> 1;
-      iterator(array[mid]) < iterator(obj) ? (low = mid + 1) : (high = mid);
-    }
-    return low;
-  };
-  // Convert anything iterable into a real, live array.
-  _.toArray = function toArray(iterable) {
-    if ((!iterable)) {
-      return [];
-    }
-    if ((iterable.toArray)) {
-      return iterable.toArray();
-    }
-    if ((_.isArray(iterable))) {
-      return iterable;
-    }
-    if ((_.isArguments(iterable))) {
-      return slice.call(iterable);
-    }
-    return _.values(iterable);
-  };
-  // Return the number of elements in an object.
-  _.size = function size(obj) {
-    return _.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 = function first(array, n, guard) {
-    return n && !guard ? slice.call(array, 0, n) : 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 = function rest(array, index, guard) {
-    return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
-  };
-  // Get the last element of an array.
-  _.last = function last(array) {
-    return array[array.length - 1];
-  };
-  // Trim out all falsy values from an array.
-  _.compact = function compact(array) {
-    var _a, _b, _c, _d, _e, i;
-    _a = []; _d = 0; _e = array.length;
-    for (_c=0, i=_d; (_d <= _e ? i < _e : i > _e); (_d <= _e ? i += 1 : i -= 1), _c++) {
-      if (array[i]) {
-        _a.push(array[i]);
-      }
-    }
-    return _a;
-  };
-  // Return a completely flattened version of an array.
-  _.flatten = function flatten(array) {
-    return _.reduce(array, [], function(memo, value) {
-      if (_.isArray(value)) {
-        return memo.concat(_.flatten(value));
-      }
-      memo.push(value);
-      return memo;
-    });
-  };
-  // Return a version of the array that does not contain the specified value(s).
-  _.without = function without(array) {
-    var _a, _b, _c, val, values;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    values = _.rest(arguments);
-    _a = []; _b = _.toArray(array);
-    for (_c = 0; _c < _b.length; _c++) {
-      val = _b[_c];
-      if (!_.include(values, val)) {
-        _a.push(val);
-      }
-    }
-    return _a;
-  };
-  // 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 = function uniq(array, isSorted) {
-    var _a, el, i, memo;
-    memo = [];
-    _a = _.toArray(array);
-    for (i = 0; i < _a.length; i++) {
-      el = _a[i];
-      if (i === 0 || (isSorted === true ? _.last(memo) !== el : !_.include(memo, el))) {
-        memo.push(el);
-      }
-    }
-    return memo;
-  };
-  // Produce an array that contains every item shared between all the
-  // passed-in arrays.
-  _.intersect = function intersect(array) {
-    var rest;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    rest = _.rest(arguments);
-    return _.select(_.uniq(array), function(item) {
-      return _.all(rest, function(other) {
-        return _.indexOf(other, item) >= 0;
-      });
-    });
-  };
-  // Zip together multiple lists into a single array -- elements that share
-  // an index go together.
-  _.zip = function zip() {
-    var _a, _b, _c, _d, i, length, results;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    length = _.max(_.pluck(arguments, 'length'));
-    results = new Array(length);
-    _c = 0; _d = length;
-    for (_b=0, i=_c; (_c <= _d ? i < _d : i > _d); (_c <= _d ? i += 1 : i -= 1), _b++) {
-      results[i] = _.pluck(arguments, String(i));
-    }
-    return 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 occurence of an
-  // item in an array, or -1 if the item is not included in the array.
-  _.indexOf = function indexOf(array, item) {
-    var i, l;
-    if (array.indexOf) {
-      return array.indexOf(item);
-    }
-    i = 0;
-    l = array.length;
-    while (l - i) {
-      if (array[i] === item) {
-        return i;
-      } else {
-        i++;
-      }
-    }
-    return -1;
-  };
-  // Provide JavaScript 1.6's lastIndexOf, delegating to the native function,
-  // if possible.
-  _.lastIndexOf = function lastIndexOf(array, item) {
-    var i;
-    if (array.lastIndexOf) {
-      return array.lastIndexOf(item);
-    }
-    i = array.length;
-    while (i) {
-      if (array[i] === item) {
-        return i;
-      } else {
-        i--;
-      }
-    }
-    return -1;
-  };
-  // Generate an integer Array containing an arithmetic progression. A port of
-  // the native Python range() function. See:
-  // http://docs.python.org/library/functions.html#range
-  _.range = function range(start, stop, step) {
-    var _a, a, i, idx, len, range, solo;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    a = arguments;
-    solo = a.length <= 1;
-    i = (start = solo ? 0 : a[0]);
-    stop = solo ? a[0] : a[1];
-    step = a[2] || 1;
-    len = Math.ceil((stop - start) / step);
-    if (len <= 0) {
-      return [];
-    }
-    range = new Array(len);
-    idx = 0;
-    _a = [];
-    while (true) {
-      if ((step > 0 ? i - stop : stop - i) >= 0) {
-        return range;
-      }
-      range[idx] = i;
-      idx++;
-      i += step;
-    }
-    return _a;
-  };
-  // ----------------------- Function Functions: -----------------------------
-  // Create a function bound to a given object (assigning 'this', and arguments,
-  // optionally). Binding with arguments is also known as 'curry'.
-  _.bind = function bind(func, obj) {
-    var args;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    args = _.rest(arguments, 2);
-    return (function() {
-      var arguments = Array.prototype.slice.call(arguments, 0);
-      return func.apply(obj || 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 = function bindAll(obj) {
-    var funcs;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    funcs = arguments.length > 1 ? _.rest(arguments) : _.functions(obj);
-    _.each(funcs, function(f) {
-      return obj[f] = _.bind(obj[f], obj);
-    });
-    return obj;
-  };
-  // Delays a function for the given number of milliseconds, and then calls
-  // it with the arguments supplied.
-  _.delay = function delay(func, wait) {
-    var args;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    args = _.rest(arguments, 2);
-    return setTimeout((function() {
-      return func.apply(func, args);
-    }), wait);
-  };
-  // Defers a function, scheduling it to run after the current call stack has
-  // cleared.
-  _.defer = function defer(func) {
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    return _.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 = function wrap(func, wrapper) {
-    return (function() {
-      var arguments = Array.prototype.slice.call(arguments, 0);
-      return 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 = function compose() {
-    var funcs;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    funcs = arguments;
-    return (function() {
-      var _a, _b, _c, _d, args, i;
-      var arguments = Array.prototype.slice.call(arguments, 0);
-      args = arguments;
-      _c = (funcs.length - 1); _d = 0;
-      for (_b=0, i=_c; (_c <= _d ? i <= _d : i >= _d); (_c <= _d ? i += 1 : i -= 1), _b++) {
-        args = [funcs[i].apply(this, args)];
-      }
-      return args[0];
-    });
-  };
-  // ------------------------- Object Functions: ----------------------------
-  // Retrieve the names of an object's properties.
-  _.keys = function keys(obj) {
-    var _a, _b, key, val;
-    if (_.isArray(obj)) {
-      return _.range(0, obj.length);
-    }
-    _a = []; _b = obj;
-    for (key in _b) if (__hasProp.call(_b, key)) {
-      val = _b[key];
-      _a.push(key);
-    }
-    return _a;
-  };
-  // Retrieve the values of an object's properties.
-  _.values = function values(obj) {
-    return _.map(obj, _.identity);
-  };
-  // Return a sorted list of the function names available in Underscore.
-  _.functions = function functions(obj) {
-    return _.select(_.keys(obj), function(key) {
-      return _.isFunction(obj[key]);
-    }).sort();
-  };
-  // Extend a given object with all of the properties in a source object.
-  _.extend = function extend(destination, source) {
-    var _a, key, val;
-    _a = source;
-    for (key in _a) if (__hasProp.call(_a, key)) {
-      val = _a[key];
-      destination[key] = val;
-    }
-    return destination;
-  };
-  // Create a (shallow-cloned) duplicate of an object.
-  _.clone = function clone(obj) {
-    if (_.isArray(obj)) {
-      return obj.slice(0);
-    }
-    return _.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 = function tap(obj, interceptor) {
-    interceptor(obj);
-    return obj;
-  };
-  // Perform a deep comparison to check if two objects are equal.
-  _.isEqual = function isEqual(a, b) {
-    var aKeys, atype, bKeys, btype;
-    // Check object identity.
-    if (a === b) {
-      return true;
-    }
-    // Different types?
-    atype = typeof (a);
-    btype = typeof (b);
-    if (atype !== btype) {
-      return false;
-    }
-    // Basic equality test (watch out for coercions).
-    if (a == b) {
-      return true;
-    }
-    // One is falsy and the other truthy.
-    if ((!a && b) || (a && !b)) {
-      return false;
-    }
-    // One of them implements an isEqual()?
-    if (a.isEqual) {
-      return a.isEqual(b);
-    }
-    // Check dates' integer values.
-    if (_.isDate(a) && _.isDate(b)) {
-      return a.getTime() === b.getTime();
-    }
-    // Both are NaN?
-    if (_.isNaN(a) && _.isNaN(b)) {
-      return true;
-    }
-    // Compare regular expressions.
-    if (_.isRegExp(a) && _.isRegExp(b)) {
-      return a.source === b.source && a.global === b.global && a.ignoreCase === b.ignoreCase && a.multiline === b.multiline;
-    }
-    // If a is not an object by this point, we can't handle it.
-    if (atype !== 'object') {
-      return false;
-    }
-    // Check for different array lengths before comparing contents.
-    if (a.length && (a.length !== b.length)) {
-      return false;
-    }
-    // Nothing else worked, deep compare the contents.
-    aKeys = _.keys(a);
-    bKeys = _.keys(b);
-    // Different object sizes?
-    if (aKeys.length !== bKeys.length) {
-      return false;
-    }
-    // Recursive comparison of contents.
-    // for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
-    return true;
-  };
-  // Is a given array or object empty?
-  _.isEmpty = function isEmpty(obj) {
-    return _.keys(obj).length === 0;
-  };
-  // Is a given value a DOM element?
-  _.isElement = function isElement(obj) {
-    return obj && obj.nodeType === 1;
-  };
-  // Is a given value an array?
-  _.isArray = function isArray(obj) {
-    return !!(obj && obj.concat && obj.unshift);
-  };
-  // Is a given variable an arguments object?
-  _.isArguments = function isArguments(obj) {
-    return obj && _.isNumber(obj.length) && !obj.concat && !obj.substr && !obj.apply && !propertyIsEnumerable.call(obj, 'length');
-  };
-  // Is the given value a function?
-  _.isFunction = function isFunction(obj) {
-    return !!(obj && obj.constructor && obj.call && obj.apply);
-  };
-  // Is the given value a string?
-  _.isString = function isString(obj) {
-    return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
-  };
-  // Is a given value a number?
-  _.isNumber = function isNumber(obj) {
-    return (obj === +obj) || toString.call(obj) === '[object Number]';
-  };
-  // Is a given value a Date?
-  _.isDate = function isDate(obj) {
-    return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
-  };
-  // Is the given value a regular expression?
-  _.isRegExp = function isRegExp(obj) {
-    return !!(obj && obj.exec && (obj.ignoreCase || obj.ignoreCase === 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 = function isNaN(obj) {
-    return _.isNumber(obj) && window.isNaN(obj);
-  };
-  // Is a given value equal to null?
-  _.isNull = function isNull(obj) {
-    return obj === null;
-  };
-  // Is a given variable undefined?
-  _.isUndefined = function isUndefined(obj) {
-    return typeof obj === 'undefined';
-  };
-  // -------------------------- Utility Functions: --------------------------
-  // Run Underscore.js in noConflict mode, returning the '_' variable to its
-  // previous owner. Returns a reference to the Underscore object.
-  _.noConflict = function noConflict() {
-    root._ = previousUnderscore;
-    return this;
-  };
-  // Keep the identity function around for default iterators.
-  _.identity = function identity(value) {
-    return value;
-  };
-  // Break out of the middle of an iteration.
-  _.breakLoop = function breakLoop() {
-    throw breaker;
-  };
-  // Generate a unique integer id (unique within the entire client session).
-  // Useful for temporary DOM ids.
-  idCounter = 0;
-  _.uniqueId = function uniqueId(prefix) {
-    return (prefix || '') + 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's version.
-  _.template = function template(str, data) {
-    var c, fn;
-    c = _.templateSettings;
-    fn = new Function('obj', 'var p=[],print=function(){p.push.apply(p,arguments);};' + 'with(obj){p.push(\'' + str.replace(/[\r\t\n]/g, " ").replace(new RegExp("'(?=[^" + c.end[0] + "]*" + c.end + ")", "g"), "\t").split("'").join("\\'").split("\t").join("'").replace(c.interpolate, "',$1,'").split(c.start).join("');").split(c.end).join("p.push('") + "');}return p.join('');");
-    return data ? fn(data) : fn;
-  };
-  // ------------------------------- Aliases ----------------------------------
-  _.forEach = _.each;
-  _.foldl = (_.inject = _.reduce);
-  _.foldr = _.reduceRight;
-  _.filter = _.select;
-  _.every = _.all;
-  _.some = _.any;
-  _.head = _.first;
-  _.tail = _.rest;
-  _.methods = _.functions;
-  // ------------------------ Setup the OOP Wrapper: --------------------------
-  // Helper function to continue chaining intermediate results.
-  result = function result(obj, chain) {
-    return chain ? _(obj).chain() : obj;
-  };
-  // Add all of the Underscore functions to the wrapper object.
-  _.each(_.functions(_), function(name) {
-    var method;
-    method = _[name];
-    return wrapper.prototype[name] = function() {
-      var arguments = Array.prototype.slice.call(arguments, 0);
-      unshift.call(arguments, this._wrapped);
-      return result(method.apply(_, arguments), this._chain);
-    };
-  });
-  // Add all mutator Array functions to the wrapper.
-  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-    var method;
-    method = Array.prototype[name];
-    return wrapper.prototype[name] = function() {
-      var arguments = Array.prototype.slice.call(arguments, 0);
-      method.apply(this._wrapped, arguments);
-      return result(this._wrapped, this._chain);
-    };
-  });
-  // Add all accessor Array functions to the wrapper.
-  _.each(['concat', 'join', 'slice'], function(name) {
-    var method;
-    method = Array.prototype[name];
-    return wrapper.prototype[name] = function() {
-      var arguments = Array.prototype.slice.call(arguments, 0);
-      return result(method.apply(this._wrapped, arguments), this._chain);
-    };
-  });
-  // Start chaining a wrapped Underscore object.
-  wrapper.prototype.chain = function chain() {
-    this._chain = true;
-    return this;
-  };
-  // Extracts the result from a wrapped and chained object.
-  wrapper.prototype.value = function value() {
-    return this._wrapped;
-  };
-})();
\ No newline at end of file