removing underscore.js from lib, and from the docs page
This commit is contained in:
Jeremy Ashkenas
parent
495ca64c46
commit
c4d19cd1fa
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@ -229,13 +229,13 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
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<p>
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Here's a live version of the CoffeeScript compiler, running within
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your browser.<br /> Hit the <b>compile</b> button to generate JavaScript
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your browser.<br /> Hit the <b>compile</b> button to generate JavaScript
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on the right-hand side.
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You can also paste in any of the examples from below.
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</p>
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<div class="code repl_wrapper">
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<textarea id="repl_source">reverse: (string) ->
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<textarea id="repl_source">reverse: (string) ->
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string.split('').reverse()
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print reverse 'tpircseeffoc'</textarea>
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@ -294,7 +294,7 @@ print reverse 'tpircseeffoc'</textarea>
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<b class="header">Assignment</b>
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Use a colon <tt>:</tt> to assign, as in
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<a href="http://json.org">JSON</a>. Equal signs are only needed for
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mathy things. While colons are preferred, the two may be used interchangeably,
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mathy things. While colons are preferred, the two may be used interchangeably,
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even within object literals.
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</p>
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<%= code_for('assignment', 'greeting') %>
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@ -842,7 +842,6 @@ print reverse 'tpircseeffoc'</textarea>
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</div>
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<script type="text/javascript" src="lib/coffee_script/underscore.js"></script>
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<script type="text/javascript" src="lib/coffee_script/rewriter.js"></script>
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<script type="text/javascript" src="lib/coffee_script/lexer.js"></script>
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<script type="text/javascript" src="lib/coffee_script/parser.js"></script>
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@ -326,13 +326,13 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
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<p>
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Here's a live version of the CoffeeScript compiler, running within
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your browser.<br /> Hit the <b>compile</b> button to generate JavaScript
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your browser.<br /> Hit the <b>compile</b> button to generate JavaScript
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on the right-hand side.
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You can also paste in any of the examples from below.
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</p>
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<div class="code repl_wrapper">
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<textarea id="repl_source">reverse: (string) ->
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<textarea id="repl_source">reverse: (string) ->
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string.split('').reverse()
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print reverse 'tpircseeffoc'</textarea>
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@ -407,7 +407,7 @@ cube = function cube(x) {
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<b class="header">Assignment</b>
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Use a colon <tt>:</tt> to assign, as in
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<a href="http://json.org">JSON</a>. Equal signs are only needed for
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mathy things. While colons are preferred, the two may be used interchangeably,
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mathy things. While colons are preferred, the two may be used interchangeably,
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even within object literals.
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</p>
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<div class='code'><pre class="idle"><span class="FunctionName">greeting</span><span class="Keyword">:</span> <span class="String"><span class="String">"</span>Hello CoffeeScript<span class="String">"</span></span>
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@ -1713,7 +1713,6 @@ html <span class="Keyword">=</span> <span class="String"><span class="String">&q
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</div>
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<script type="text/javascript" src="lib/coffee_script/underscore.js"></script>
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<script type="text/javascript" src="lib/coffee_script/rewriter.js"></script>
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<script type="text/javascript" src="lib/coffee_script/lexer.js"></script>
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<script type="text/javascript" src="lib/coffee_script/parser.js"></script>
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@ -1,761 +0,0 @@
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(function(){
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var _, breaker, idCounter, previousUnderscore, result, root, slice, unshift, wrapper;
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var __hasProp = Object.prototype.hasOwnProperty;
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// Underscore.coffee
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// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
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// Underscore is freely distributable under the terms of the MIT license.
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// Portions of Underscore are inspired by or borrowed from Prototype.js,
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// Oliver Steele's Functional, and John Resig's Micro-Templating.
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// For all details and documentation:
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// http://documentcloud.github.com/underscore/
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// ------------------------- 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.
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previousUnderscore = root._;
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// If Underscore is called as a function, it returns a wrapped object that
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// can be used OO-style. This wrapper holds altered versions of all the
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// underscore functions. Wrapped objects may be chained.
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wrapper = function wrapper(obj) {
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this._wrapped = obj;
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return this;
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};
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// Establish the object that gets thrown to break out of a loop iteration.
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breaker = typeof (StopIteration) === 'undefined' ? '__break__' : StopIteration;
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// Create a safe reference to the Underscore object forreference below.
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_ = (root._ = function _(obj) {
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return new wrapper(obj);
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});
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// Export the Underscore object for CommonJS.
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typeof (exports) !== 'undefined' ? (exports._ = _) : null;
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// Create quick reference variables for speed access to core prototypes.
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slice = Array.prototype.slice;
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unshift = Array.prototype.unshift;
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toString = Object.prototype.toString;
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hasOwnProperty = Object.prototype.hasOwnProperty;
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propertyIsEnumerable = Object.prototype.propertyIsEnumerable;
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// Current version.
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_.VERSION = '0.5.8';
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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 = function each(obj, iterator, context) {
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var _a, _b, _c, _d, _e, _f, i, index, key, val;
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index = 0;
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try {
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if (obj.forEach) {
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return obj.forEach(iterator, context);
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}
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if (_.isNumber(obj.length)) {
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_a = []; _d = 0; _e = obj.length;
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for (_c=0, i=_d; (_d <= _e ? i < _e : i > _e); (_d <= _e ? i += 1 : i -= 1), _c++) {
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_a.push(iterator.call(context, obj[i], i, obj));
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}
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return _a;
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}
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_f = obj;
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for (key in _f) if (__hasProp.call(_f, key)) {
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val = _f[key];
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iterator.call(context, val, key, obj);
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}
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} catch (e) {
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if (e !== breaker) {
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throw e;
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}
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}
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return obj;
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};
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// Return the results of applying the iterator to each element. Use JavaScript
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// 1.6's version of map, if possible.
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_.map = function map(obj, iterator, context) {
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var results;
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if ((obj && _.isFunction(obj.map))) {
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return obj.map(iterator, context);
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}
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results = [];
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_.each(obj, function(value, index, list) {
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return results.push(iterator.call(context, value, index, list));
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});
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return results;
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};
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// Reduce builds up a single result from a list of values. Also known as
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// inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
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_.reduce = function reduce(obj, memo, iterator, context) {
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if ((obj && _.isFunction(obj.reduce))) {
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return obj.reduce(_.bind(iterator, context), memo);
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}
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_.each(obj, function(value, index, list) {
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return memo = iterator.call(context, memo, value, index, list);
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});
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return memo;
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};
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// The right-associative version of reduce, also known as foldr. Uses
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// JavaScript 1.8's version of reduceRight, if available.
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_.reduceRight = function reduceRight(obj, memo, iterator, context) {
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if ((obj && _.isFunction(obj.reduceRight))) {
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return obj.reduceRight(_.bind(iterator, context), memo);
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}
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_.each(_.clone(_.toArray(obj)).reverse(), function(value, index) {
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return memo = iterator.call(context, memo, value, index, obj);
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});
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return memo;
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};
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// Return the first value which passes a truth test.
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_.detect = function detect(obj, iterator, context) {
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var result;
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result = null;
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_.each(obj, function(value, index, list) {
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if (iterator.call(context, value, index, list)) {
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result = value;
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return _.breakLoop();
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}
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});
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return result;
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};
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// Return all the elements that pass a truth test. Use JavaScript 1.6's
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// filter(), if it exists.
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_.select = function select(obj, iterator, context) {
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var results;
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if (obj && _.isFunction(obj.filter)) {
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return obj.filter(iterator, context);
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}
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results = [];
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_.each(obj, function(value, index, list) {
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if (iterator.call(context, value, index, list)) {
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return results.push(value);
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}
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});
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return results;
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};
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// Return all the elements for which a truth test fails.
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_.reject = function reject(obj, iterator, context) {
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var results;
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results = [];
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_.each(obj, function(value, index, list) {
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if (!iterator.call(context, value, index, list)) {
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return results.push(value);
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}
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});
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return results;
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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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_.all = function all(obj, iterator, context) {
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var result;
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iterator = iterator || _.identity;
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if (obj && _.isFunction(obj.every)) {
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return obj.every(iterator, context);
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}
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result = true;
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_.each(obj, function(value, index, list) {
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if (!(((result = result && iterator.call(context, value, index, list))))) {
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return _.breakLoop();
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}
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});
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return result;
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};
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// Determine if at least one element in the object matches a truth test. Use
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// JavaScript 1.6's some(), if it exists.
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_.any = function any(obj, iterator, context) {
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var result;
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iterator = iterator || _.identity;
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if (obj && _.isFunction(obj.some)) {
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return obj.some(iterator, context);
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}
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result = false;
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_.each(obj, function(value, index, list) {
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if (((result = iterator.call(context, value, index, list)))) {
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return _.breakLoop();
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}
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});
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return result;
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};
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// Determine if a given value is included in the array or object,
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// based on '==='.
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_.include = function include(obj, target) {
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var _a, key, val;
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if (obj && _.isFunction(obj.indexOf)) {
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return _.indexOf(obj, target) !== -1;
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}
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_a = obj;
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for (key in _a) if (__hasProp.call(_a, key)) {
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val = _a[key];
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if (val === target) {
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return true;
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}
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}
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return false;
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};
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// Invoke a method with arguments on every item in a collection.
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_.invoke = function invoke(obj, method) {
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var _a, _b, _c, args, val;
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var arguments = Array.prototype.slice.call(arguments, 0);
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args = _.rest(arguments, 2);
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_a = []; _b = obj;
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for (_c = 0; _c < _b.length; _c++) {
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val = _b[_c];
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_a.push((method ? val[method] : val).apply(val, args));
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}
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return _a;
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};
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// Convenience version of a common use case of map: fetching a property.
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_.pluck = function pluck(obj, key) {
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return _.map(obj, (function(val) {
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return val[key];
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}));
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};
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// Return the maximum item or (item-based computation).
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_.max = function max(obj, iterator, context) {
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var result;
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if (!iterator && _.isArray(obj)) {
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return Math.max.apply(Math, obj);
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}
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result = {
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computed: -Infinity
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};
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_.each(obj, function(value, index, list) {
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var computed;
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computed = iterator ? iterator.call(context, value, index, list) : value;
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return computed >= result.computed && ((result = {
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value: value,
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computed: computed
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}));
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});
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return result.value;
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};
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// Return the minimum element (or element-based computation).
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_.min = function min(obj, iterator, context) {
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var result;
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if (!iterator && _.isArray(obj)) {
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return Math.min.apply(Math, obj);
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}
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result = {
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computed: Infinity
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};
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_.each(obj, function(value, index, list) {
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var computed;
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computed = iterator ? iterator.call(context, value, index, list) : value;
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return computed < result.computed && ((result = {
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value: value,
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computed: computed
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}));
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});
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return result.value;
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};
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// Sort the object's values by a criteria produced by an iterator.
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_.sortBy = function sortBy(obj, iterator, context) {
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return _.pluck(((_.map(obj, function(value, index, list) {
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return {
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value: value,
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criteria: iterator.call(context, value, index, list)
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};
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})).sort(function(left, right) {
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var a, b;
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a = left.criteria;
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b = right.criteria;
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if (a < b) {
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return -1;
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} else if (a > b) {
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return 1;
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} else {
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return 0;
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}
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})), 'value');
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};
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// Use a comparator function to figure out at what index an object should
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// be inserted so as to maintain order. Uses binary search.
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_.sortedIndex = function sortedIndex(array, obj, iterator) {
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var high, low, mid;
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iterator = iterator || _.identity;
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low = 0;
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high = array.length;
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while (low < high) {
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mid = (low + high) >> 1;
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iterator(array[mid]) < iterator(obj) ? (low = mid + 1) : (high = mid);
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}
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return low;
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};
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// Convert anything iterable into a real, live array.
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_.toArray = function toArray(iterable) {
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if ((!iterable)) {
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return [];
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}
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if ((iterable.toArray)) {
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return iterable.toArray();
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}
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if ((_.isArray(iterable))) {
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return iterable;
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}
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if ((_.isArguments(iterable))) {
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return slice.call(iterable);
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}
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return _.values(iterable);
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};
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// Return the number of elements in an object.
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_.size = function size(obj) {
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return _.toArray(obj).length;
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};
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// -------------------------- Array Functions: ------------------------------
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// Get the first element of an array. Passing "n" will return the first N
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// values in the array. Aliased as "head". The "guard" check allows it to work
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// with _.map.
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_.first = function first(array, n, guard) {
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return n && !guard ? slice.call(array, 0, n) : array[0];
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};
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// Returns everything but the first entry of the array. Aliased as "tail".
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// Especially useful on the arguments object. Passing an "index" will return
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// the rest of the values in the array from that index onward. The "guard"
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// check allows it to work with _.map.
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_.rest = function rest(array, index, guard) {
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return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
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};
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// Get the last element of an array.
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_.last = function last(array) {
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return array[array.length - 1];
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};
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// Trim out all falsy values from an array.
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_.compact = function compact(array) {
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var _a, _b, _c, _d, _e, i;
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_a = []; _d = 0; _e = array.length;
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for (_c=0, i=_d; (_d <= _e ? i < _e : i > _e); (_d <= _e ? i += 1 : i -= 1), _c++) {
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if (array[i]) {
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_a.push(array[i]);
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}
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}
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return _a;
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};
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// Return a completely flattened version of an array.
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_.flatten = function flatten(array) {
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return _.reduce(array, [], function(memo, value) {
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if (_.isArray(value)) {
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return memo.concat(_.flatten(value));
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}
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memo.push(value);
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return memo;
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});
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};
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// Return a version of the array that does not contain the specified value(s).
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_.without = function without(array) {
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var _a, _b, _c, val, values;
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var arguments = Array.prototype.slice.call(arguments, 0);
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values = _.rest(arguments);
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_a = []; _b = _.toArray(array);
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for (_c = 0; _c < _b.length; _c++) {
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val = _b[_c];
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if (!_.include(values, val)) {
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_a.push(val);
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}
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}
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return _a;
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};
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// Produce a duplicate-free version of the array. If the array has already
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// been sorted, you have the option of using a faster algorithm.
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_.uniq = function uniq(array, isSorted) {
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var _a, el, i, memo;
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memo = [];
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_a = _.toArray(array);
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for (i = 0; i < _a.length; i++) {
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el = _a[i];
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if (i === 0 || (isSorted === true ? _.last(memo) !== el : !_.include(memo, el))) {
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memo.push(el);
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}
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}
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return memo;
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};
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// Produce an array that contains every item shared between all the
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// passed-in arrays.
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_.intersect = function intersect(array) {
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var rest;
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var arguments = Array.prototype.slice.call(arguments, 0);
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rest = _.rest(arguments);
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return _.select(_.uniq(array), function(item) {
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return _.all(rest, function(other) {
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return _.indexOf(other, item) >= 0;
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});
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});
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};
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// 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;
|
||||
};
|
||||
})();
|
||||
Loading…
Reference in New Issue