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@@ -1,1068 +0,0 @@
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-// Underscore.js 1.3.3
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-// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
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-// Underscore is freely distributable under the MIT license.
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-// Portions of Underscore are inspired or borrowed from Prototype,
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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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-
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-(function() {
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-
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- // Baseline setup
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- // --------------
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-
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- // Establish the root object, `window` in the browser, or `global` on the server.
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- var root = this;
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-
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- // Save the previous value of the `_` variable.
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- var previousUnderscore = root._;
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-
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- // Establish the object that gets returned to break out of a loop iteration.
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- var breaker = {};
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-
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- // Save bytes in the minified (but not gzipped) version:
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- var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
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-
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- // Create quick reference variables for speed access to core prototypes.
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- var slice = ArrayProto.slice,
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- unshift = ArrayProto.unshift,
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- toString = ObjProto.toString,
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- hasOwnProperty = ObjProto.hasOwnProperty;
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-
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- // All **ECMAScript 5** native function implementations that we hope to use
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- // are declared here.
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- var
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- nativeForEach = ArrayProto.forEach,
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- nativeMap = ArrayProto.map,
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- nativeReduce = ArrayProto.reduce,
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- nativeReduceRight = ArrayProto.reduceRight,
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- nativeFilter = ArrayProto.filter,
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- nativeEvery = ArrayProto.every,
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- nativeSome = ArrayProto.some,
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- nativeIndexOf = ArrayProto.indexOf,
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- nativeLastIndexOf = ArrayProto.lastIndexOf,
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- nativeIsArray = Array.isArray,
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- nativeKeys = Object.keys,
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- nativeBind = FuncProto.bind;
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-
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- // Create a safe reference to the Underscore object for use below.
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- var _ = function(obj) { return new wrapper(obj); };
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-
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- // Export the Underscore object for **Node.js** and **"CommonJS"**, with
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- // backwards-compatibility for the old `require()` API. If we're not in
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- // CommonJS, add `_` to the global object via a string identifier for
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- // the Closure Compiler "advanced" mode. Registration as an AMD module
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- // via define() happens at the end of this file.
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- if (typeof exports !== 'undefined') {
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- if (typeof module !== 'undefined' && module.exports) {
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- exports = module.exports = _;
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- }
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- exports._ = _;
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- } else {
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- root['_'] = _;
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- }
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-
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- // Current version.
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- _.VERSION = '1.3.3';
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-
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- // Collection Functions
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- // --------------------
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-
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- // The cornerstone, an `each` implementation, aka `forEach`.
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- // Handles objects with the built-in `forEach`, arrays, and raw objects.
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- // Delegates to **ECMAScript 5**'s native `forEach` if available.
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- var each = _.each = _.forEach = function(obj, iterator, context) {
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- if (obj == null) return;
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- if (nativeForEach && obj.forEach === nativeForEach) {
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- obj.forEach(iterator, context);
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- } else if (obj.length === +obj.length) {
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- for (var i = 0, l = obj.length; i < l; i++) {
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- if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
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- }
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- } else {
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- for (var key in obj) {
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- if (_.has(obj, key)) {
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- if (iterator.call(context, obj[key], key, obj) === breaker) return;
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- }
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- }
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- }
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- };
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-
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- // Return the results of applying the iterator to each element.
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- // Delegates to **ECMAScript 5**'s native `map` if available.
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- _.map = _.collect = function(obj, iterator, context) {
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- var results = [];
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- if (obj == null) return results;
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- if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
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- each(obj, function(value, index, list) {
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- results[results.length] = iterator.call(context, value, index, list);
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- });
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- if (obj.length === +obj.length) results.length = obj.length;
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- return results;
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- };
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-
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- // **Reduce** builds up a single result from a list of values, aka `inject`,
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- // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
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- _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
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- var initial = arguments.length > 2;
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- if (obj == null) obj = [];
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- if (nativeReduce && obj.reduce === nativeReduce) {
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- if (context) iterator = _.bind(iterator, context);
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- return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
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- }
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- each(obj, function(value, index, list) {
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- if (!initial) {
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- memo = value;
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- initial = true;
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- } else {
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- memo = iterator.call(context, memo, value, index, list);
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- }
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- });
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- if (!initial) throw new TypeError('Reduce of empty array with no initial value');
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- return memo;
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- };
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-
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- // The right-associative version of reduce, also known as `foldr`.
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- // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
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- _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
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- var initial = arguments.length > 2;
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- if (obj == null) obj = [];
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- if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
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- if (context) iterator = _.bind(iterator, context);
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- return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
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- }
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- var reversed = _.toArray(obj).reverse();
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- if (context && !initial) iterator = _.bind(iterator, context);
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- return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
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- };
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-
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- // Return the first value which passes a truth test. Aliased as `detect`.
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- _.find = _.detect = function(obj, iterator, context) {
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- var result;
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- any(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 true;
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- }
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- });
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- return result;
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- };
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-
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- // Return all the elements that pass a truth test.
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- // Delegates to **ECMAScript 5**'s native `filter` if available.
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- // Aliased as `select`.
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- _.filter = _.select = function(obj, iterator, context) {
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- var results = [];
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- if (obj == null) return results;
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- if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
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- each(obj, function(value, index, list) {
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- if (iterator.call(context, value, index, list)) results[results.length] = value;
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- });
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- return results;
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- };
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-
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- // Return all the elements for which a truth test fails.
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- _.reject = function(obj, iterator, context) {
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- var results = [];
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- if (obj == null) return results;
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- each(obj, function(value, index, list) {
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- if (!iterator.call(context, value, index, list)) results[results.length] = value;
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- });
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- return results;
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- };
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-
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- // Determine whether all of the elements match a truth test.
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- // Delegates to **ECMAScript 5**'s native `every` if available.
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- // Aliased as `all`.
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- _.every = _.all = function(obj, iterator, context) {
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- var result = true;
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- if (obj == null) return result;
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- if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
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- each(obj, function(value, index, list) {
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- if (!(result = result && iterator.call(context, value, index, list))) return breaker;
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- });
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- return !!result;
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- };
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-
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- // Determine if at least one element in the object matches a truth test.
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- // Delegates to **ECMAScript 5**'s native `some` if available.
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- // Aliased as `any`.
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- var any = _.some = _.any = function(obj, iterator, context) {
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- iterator || (iterator = _.identity);
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- var result = false;
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- if (obj == null) return result;
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- if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
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- each(obj, function(value, index, list) {
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- if (result || (result = iterator.call(context, value, index, list))) return breaker;
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- });
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- return !!result;
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- };
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-
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- // Determine if a given value is included in the array or object using `===`.
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- // Aliased as `contains`.
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- _.include = _.contains = function(obj, target) {
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- var found = false;
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- if (obj == null) return found;
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- if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
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- found = any(obj, function(value) {
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- return value === target;
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- });
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- return found;
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- };
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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(obj, method) {
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- var args = slice.call(arguments, 2);
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- return _.map(obj, function(value) {
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- return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
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- });
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- };
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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(obj, key) {
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- return _.map(obj, function(value){ return value[key]; });
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- };
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-
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- // Return the maximum element or (element-based computation).
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- _.max = function(obj, iterator, context) {
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- if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.max.apply(Math, obj);
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- if (!iterator && _.isEmpty(obj)) return -Infinity;
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- var result = {computed : -Infinity};
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- each(obj, function(value, index, list) {
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- var computed = iterator ? iterator.call(context, value, index, list) : value;
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- computed >= result.computed && (result = {value : value, computed : computed});
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- });
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- return result.value;
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- };
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-
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- // Return the minimum element (or element-based computation).
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- _.min = function(obj, iterator, context) {
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- if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.min.apply(Math, obj);
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- if (!iterator && _.isEmpty(obj)) return Infinity;
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- var result = {computed : Infinity};
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- each(obj, function(value, index, list) {
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- var computed = iterator ? iterator.call(context, value, index, list) : value;
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- computed < result.computed && (result = {value : value, computed : computed});
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- });
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- return result.value;
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- };
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-
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- // Shuffle an array.
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- _.shuffle = function(obj) {
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- var shuffled = [], rand;
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- each(obj, function(value, index, list) {
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- rand = Math.floor(Math.random() * (index + 1));
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- shuffled[index] = shuffled[rand];
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- shuffled[rand] = value;
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- });
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- return shuffled;
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- };
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-
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- // Sort the object's values by a criterion produced by an iterator.
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- _.sortBy = function(obj, val, context) {
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- var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
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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 = left.criteria, b = right.criteria;
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- if (a === void 0) return 1;
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- if (b === void 0) return -1;
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- return a < b ? -1 : a > b ? 1 : 0;
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- }), 'value');
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- };
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-
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- // Groups the object's values by a criterion. Pass either a string attribute
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- // to group by, or a function that returns the criterion.
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- _.groupBy = function(obj, val) {
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- var result = {};
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- var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
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- each(obj, function(value, index) {
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- var key = iterator(value, index);
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- (result[key] || (result[key] = [])).push(value);
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- });
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- return result;
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- };
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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(array, obj, iterator) {
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- iterator || (iterator = _.identity);
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- var low = 0, high = array.length;
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- while (low < high) {
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- var 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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|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Safely convert anything iterable into a real, live array.
|
|
|
|
|
- _.toArray = function(obj) {
|
|
|
|
|
- if (!obj) return [];
|
|
|
|
|
- if (_.isArray(obj)) return slice.call(obj);
|
|
|
|
|
- if (_.isArguments(obj)) return slice.call(obj);
|
|
|
|
|
- if (obj.toArray && _.isFunction(obj.toArray)) return obj.toArray();
|
|
|
|
|
- return _.values(obj);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Return the number of elements in an object.
|
|
|
|
|
- _.size = function(obj) {
|
|
|
|
|
- return _.isArray(obj) ? obj.length : _.keys(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` and `take`. The **guard** check
|
|
|
|
|
- // allows it to work with `_.map`.
|
|
|
|
|
- _.first = _.head = _.take = function(array, n, guard) {
|
|
|
|
|
- return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Returns everything but the last entry of the array. Especcialy useful on
|
|
|
|
|
- // the arguments object. Passing **n** will return all the values in
|
|
|
|
|
- // the array, excluding the last N. The **guard** check allows it to work with
|
|
|
|
|
- // `_.map`.
|
|
|
|
|
- _.initial = function(array, n, guard) {
|
|
|
|
|
- return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Get the last element of an array. Passing **n** will return the last N
|
|
|
|
|
- // values in the array. The **guard** check allows it to work with `_.map`.
|
|
|
|
|
- _.last = function(array, n, guard) {
|
|
|
|
|
- if ((n != null) && !guard) {
|
|
|
|
|
- return slice.call(array, Math.max(array.length - n, 0));
|
|
|
|
|
- } else {
|
|
|
|
|
- return array[array.length - 1];
|
|
|
|
|
- }
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // 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 = _.tail = function(array, index, guard) {
|
|
|
|
|
- return slice.call(array, (index == null) || guard ? 1 : index);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Trim out all falsy values from an array.
|
|
|
|
|
- _.compact = function(array) {
|
|
|
|
|
- return _.filter(array, function(value){ return !!value; });
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Return a completely flattened version of an array.
|
|
|
|
|
- _.flatten = function(array, shallow) {
|
|
|
|
|
- return _.reduce(array, function(memo, value) {
|
|
|
|
|
- if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
|
|
|
|
|
- memo[memo.length] = value;
|
|
|
|
|
- return memo;
|
|
|
|
|
- }, []);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Return a version of the array that does not contain the specified value(s).
|
|
|
|
|
- _.without = function(array) {
|
|
|
|
|
- return _.difference(array, slice.call(arguments, 1));
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Produce a duplicate-free version of the array. If the array has already
|
|
|
|
|
- // been sorted, you have the option of using a faster algorithm.
|
|
|
|
|
- // Aliased as `unique`.
|
|
|
|
|
- _.uniq = _.unique = function(array, isSorted, iterator) {
|
|
|
|
|
- var initial = iterator ? _.map(array, iterator) : array;
|
|
|
|
|
- var results = [];
|
|
|
|
|
- // The `isSorted` flag is irrelevant if the array only contains two elements.
|
|
|
|
|
- if (array.length < 3) isSorted = true;
|
|
|
|
|
- _.reduce(initial, function (memo, value, index) {
|
|
|
|
|
- if (isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
|
|
|
|
|
- memo.push(value);
|
|
|
|
|
- results.push(array[index]);
|
|
|
|
|
- }
|
|
|
|
|
- return memo;
|
|
|
|
|
- }, []);
|
|
|
|
|
- return results;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Produce an array that contains the union: each distinct element from all of
|
|
|
|
|
- // the passed-in arrays.
|
|
|
|
|
- _.union = function() {
|
|
|
|
|
- return _.uniq(_.flatten(arguments, true));
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Produce an array that contains every item shared between all the
|
|
|
|
|
- // passed-in arrays. (Aliased as "intersect" for back-compat.)
|
|
|
|
|
- _.intersection = _.intersect = function(array) {
|
|
|
|
|
- var rest = slice.call(arguments, 1);
|
|
|
|
|
- return _.filter(_.uniq(array), function(item) {
|
|
|
|
|
- return _.every(rest, function(other) {
|
|
|
|
|
- return _.indexOf(other, item) >= 0;
|
|
|
|
|
- });
|
|
|
|
|
- });
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Take the difference between one array and a number of other arrays.
|
|
|
|
|
- // Only the elements present in just the first array will remain.
|
|
|
|
|
- _.difference = function(array) {
|
|
|
|
|
- var rest = _.flatten(slice.call(arguments, 1), true);
|
|
|
|
|
- return _.filter(array, function(value){ return !_.include(rest, value); });
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Zip together multiple lists into a single array -- elements that share
|
|
|
|
|
- // an index go together.
|
|
|
|
|
- _.zip = function() {
|
|
|
|
|
- var args = slice.call(arguments);
|
|
|
|
|
- var length = _.max(_.pluck(args, 'length'));
|
|
|
|
|
- var results = new Array(length);
|
|
|
|
|
- for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + 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 occurrence of an
|
|
|
|
|
- // item in an array, or -1 if the item is not included in the array.
|
|
|
|
|
- // Delegates to **ECMAScript 5**'s native `indexOf` if available.
|
|
|
|
|
- // If the array is large and already in sort order, pass `true`
|
|
|
|
|
- // for **isSorted** to use binary search.
|
|
|
|
|
- _.indexOf = function(array, item, isSorted) {
|
|
|
|
|
- if (array == null) return -1;
|
|
|
|
|
- var i, l;
|
|
|
|
|
- if (isSorted) {
|
|
|
|
|
- i = _.sortedIndex(array, item);
|
|
|
|
|
- return array[i] === item ? i : -1;
|
|
|
|
|
- }
|
|
|
|
|
- if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
|
|
|
|
|
- for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
|
|
|
|
|
- return -1;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
|
|
|
|
|
- _.lastIndexOf = function(array, item) {
|
|
|
|
|
- if (array == null) return -1;
|
|
|
|
|
- if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
|
|
|
|
|
- var i = array.length;
|
|
|
|
|
- while (i--) if (i in array && array[i] === item) return i;
|
|
|
|
|
- return -1;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Generate an integer Array containing an arithmetic progression. A port of
|
|
|
|
|
- // the native Python `range()` function. See
|
|
|
|
|
- // [the Python documentation](http://docs.python.org/library/functions.html#range).
|
|
|
|
|
- _.range = function(start, stop, step) {
|
|
|
|
|
- if (arguments.length <= 1) {
|
|
|
|
|
- stop = start || 0;
|
|
|
|
|
- start = 0;
|
|
|
|
|
- }
|
|
|
|
|
- step = arguments[2] || 1;
|
|
|
|
|
-
|
|
|
|
|
- var len = Math.max(Math.ceil((stop - start) / step), 0);
|
|
|
|
|
- var idx = 0;
|
|
|
|
|
- var range = new Array(len);
|
|
|
|
|
-
|
|
|
|
|
- while(idx < len) {
|
|
|
|
|
- range[idx++] = start;
|
|
|
|
|
- start += step;
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- return range;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Function (ahem) Functions
|
|
|
|
|
- // ------------------
|
|
|
|
|
-
|
|
|
|
|
- // Reusable constructor function for prototype setting.
|
|
|
|
|
- var ctor = function(){};
|
|
|
|
|
-
|
|
|
|
|
- // Create a function bound to a given object (assigning `this`, and arguments,
|
|
|
|
|
- // optionally). Binding with arguments is also known as `curry`.
|
|
|
|
|
- // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
|
|
|
|
|
- // We check for `func.bind` first, to fail fast when `func` is undefined.
|
|
|
|
|
- _.bind = function bind(func, context) {
|
|
|
|
|
- var bound, args;
|
|
|
|
|
- if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
|
|
|
|
|
- if (!_.isFunction(func)) throw new TypeError;
|
|
|
|
|
- args = slice.call(arguments, 2);
|
|
|
|
|
- return bound = function() {
|
|
|
|
|
- if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
|
|
|
|
|
- ctor.prototype = func.prototype;
|
|
|
|
|
- var self = new ctor;
|
|
|
|
|
- var result = func.apply(self, args.concat(slice.call(arguments)));
|
|
|
|
|
- if (Object(result) === result) return result;
|
|
|
|
|
- return self;
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // 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(obj) {
|
|
|
|
|
- var funcs = slice.call(arguments, 1);
|
|
|
|
|
- if (funcs.length == 0) funcs = _.functions(obj);
|
|
|
|
|
- each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
|
|
|
|
|
- return obj;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Memoize an expensive function by storing its results.
|
|
|
|
|
- _.memoize = function(func, hasher) {
|
|
|
|
|
- var memo = {};
|
|
|
|
|
- hasher || (hasher = _.identity);
|
|
|
|
|
- return function() {
|
|
|
|
|
- var key = hasher.apply(this, arguments);
|
|
|
|
|
- return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Delays a function for the given number of milliseconds, and then calls
|
|
|
|
|
- // it with the arguments supplied.
|
|
|
|
|
- _.delay = function(func, wait) {
|
|
|
|
|
- var args = slice.call(arguments, 2);
|
|
|
|
|
- return setTimeout(function(){ return func.apply(null, args); }, wait);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Defers a function, scheduling it to run after the current call stack has
|
|
|
|
|
- // cleared.
|
|
|
|
|
- _.defer = function(func) {
|
|
|
|
|
- return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Returns a function, that, when invoked, will only be triggered at most once
|
|
|
|
|
- // during a given window of time.
|
|
|
|
|
- _.throttle = function(func, wait) {
|
|
|
|
|
- var context, args, timeout, throttling, more, result;
|
|
|
|
|
- var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
|
|
|
|
|
- return function() {
|
|
|
|
|
- context = this; args = arguments;
|
|
|
|
|
- var later = function() {
|
|
|
|
|
- timeout = null;
|
|
|
|
|
- if (more) func.apply(context, args);
|
|
|
|
|
- whenDone();
|
|
|
|
|
- };
|
|
|
|
|
- if (!timeout) timeout = setTimeout(later, wait);
|
|
|
|
|
- if (throttling) {
|
|
|
|
|
- more = true;
|
|
|
|
|
- } else {
|
|
|
|
|
- result = func.apply(context, args);
|
|
|
|
|
- }
|
|
|
|
|
- whenDone();
|
|
|
|
|
- throttling = true;
|
|
|
|
|
- return result;
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Returns a function, that, as long as it continues to be invoked, will not
|
|
|
|
|
- // be triggered. The function will be called after it stops being called for
|
|
|
|
|
- // N milliseconds. If `immediate` is passed, trigger the function on the
|
|
|
|
|
- // leading edge, instead of the trailing.
|
|
|
|
|
- _.debounce = function(func, wait, immediate) {
|
|
|
|
|
- var timeout;
|
|
|
|
|
- return function() {
|
|
|
|
|
- var context = this, args = arguments;
|
|
|
|
|
- var later = function() {
|
|
|
|
|
- timeout = null;
|
|
|
|
|
- if (!immediate) func.apply(context, args);
|
|
|
|
|
- };
|
|
|
|
|
- if (immediate && !timeout) func.apply(context, args);
|
|
|
|
|
- clearTimeout(timeout);
|
|
|
|
|
- timeout = setTimeout(later, wait);
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Returns a function that will be executed at most one time, no matter how
|
|
|
|
|
- // often you call it. Useful for lazy initialization.
|
|
|
|
|
- _.once = function(func) {
|
|
|
|
|
- var ran = false, memo;
|
|
|
|
|
- return function() {
|
|
|
|
|
- if (ran) return memo;
|
|
|
|
|
- ran = true;
|
|
|
|
|
- return memo = func.apply(this, 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(func, wrapper) {
|
|
|
|
|
- return function() {
|
|
|
|
|
- var args = [func].concat(slice.call(arguments, 0));
|
|
|
|
|
- return wrapper.apply(this, args);
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Returns a function that is the composition of a list of functions, each
|
|
|
|
|
- // consuming the return value of the function that follows.
|
|
|
|
|
- _.compose = function() {
|
|
|
|
|
- var funcs = arguments;
|
|
|
|
|
- return function() {
|
|
|
|
|
- var args = arguments;
|
|
|
|
|
- for (var i = funcs.length - 1; i >= 0; i--) {
|
|
|
|
|
- args = [funcs[i].apply(this, args)];
|
|
|
|
|
- }
|
|
|
|
|
- return args[0];
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Returns a function that will only be executed after being called N times.
|
|
|
|
|
- _.after = function(times, func) {
|
|
|
|
|
- if (times <= 0) return func();
|
|
|
|
|
- return function() {
|
|
|
|
|
- if (--times < 1) { return func.apply(this, arguments); }
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Object Functions
|
|
|
|
|
- // ----------------
|
|
|
|
|
-
|
|
|
|
|
- // Retrieve the names of an object's properties.
|
|
|
|
|
- // Delegates to **ECMAScript 5**'s native `Object.keys`
|
|
|
|
|
- _.keys = nativeKeys || function(obj) {
|
|
|
|
|
- if (obj !== Object(obj)) throw new TypeError('Invalid object');
|
|
|
|
|
- var keys = [];
|
|
|
|
|
- for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
|
|
|
|
|
- return keys;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Retrieve the values of an object's properties.
|
|
|
|
|
- _.values = function(obj) {
|
|
|
|
|
- return _.map(obj, _.identity);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Return a sorted list of the function names available on the object.
|
|
|
|
|
- // Aliased as `methods`
|
|
|
|
|
- _.functions = _.methods = function(obj) {
|
|
|
|
|
- var names = [];
|
|
|
|
|
- for (var key in obj) {
|
|
|
|
|
- if (_.isFunction(obj[key])) names.push(key);
|
|
|
|
|
- }
|
|
|
|
|
- return names.sort();
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Extend a given object with all the properties in passed-in object(s).
|
|
|
|
|
- _.extend = function(obj) {
|
|
|
|
|
- each(slice.call(arguments, 1), function(source) {
|
|
|
|
|
- for (var prop in source) {
|
|
|
|
|
- obj[prop] = source[prop];
|
|
|
|
|
- }
|
|
|
|
|
- });
|
|
|
|
|
- return obj;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Return a copy of the object only containing the whitelisted properties.
|
|
|
|
|
- _.pick = function(obj) {
|
|
|
|
|
- var result = {};
|
|
|
|
|
- each(_.flatten(slice.call(arguments, 1)), function(key) {
|
|
|
|
|
- if (key in obj) result[key] = obj[key];
|
|
|
|
|
- });
|
|
|
|
|
- return result;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Fill in a given object with default properties.
|
|
|
|
|
- _.defaults = function(obj) {
|
|
|
|
|
- each(slice.call(arguments, 1), function(source) {
|
|
|
|
|
- for (var prop in source) {
|
|
|
|
|
- if (obj[prop] == null) obj[prop] = source[prop];
|
|
|
|
|
- }
|
|
|
|
|
- });
|
|
|
|
|
- return obj;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Create a (shallow-cloned) duplicate of an object.
|
|
|
|
|
- _.clone = function(obj) {
|
|
|
|
|
- if (!_.isObject(obj)) return obj;
|
|
|
|
|
- return _.isArray(obj) ? obj.slice() : _.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(obj, interceptor) {
|
|
|
|
|
- interceptor(obj);
|
|
|
|
|
- return obj;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Internal recursive comparison function.
|
|
|
|
|
- function eq(a, b, stack) {
|
|
|
|
|
- // Identical objects are equal. `0 === -0`, but they aren't identical.
|
|
|
|
|
- // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
|
|
|
|
|
- if (a === b) return a !== 0 || 1 / a == 1 / b;
|
|
|
|
|
- // A strict comparison is necessary because `null == undefined`.
|
|
|
|
|
- if (a == null || b == null) return a === b;
|
|
|
|
|
- // Unwrap any wrapped objects.
|
|
|
|
|
- if (a._chain) a = a._wrapped;
|
|
|
|
|
- if (b._chain) b = b._wrapped;
|
|
|
|
|
- // Invoke a custom `isEqual` method if one is provided.
|
|
|
|
|
- if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
|
|
|
|
|
- if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
|
|
|
|
|
- // Compare `[[Class]]` names.
|
|
|
|
|
- var className = toString.call(a);
|
|
|
|
|
- if (className != toString.call(b)) return false;
|
|
|
|
|
- switch (className) {
|
|
|
|
|
- // Strings, numbers, dates, and booleans are compared by value.
|
|
|
|
|
- case '[object String]':
|
|
|
|
|
- // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
|
|
|
|
|
- // equivalent to `new String("5")`.
|
|
|
|
|
- return a == String(b);
|
|
|
|
|
- case '[object Number]':
|
|
|
|
|
- // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
|
|
|
|
|
- // other numeric values.
|
|
|
|
|
- return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
|
|
|
|
|
- case '[object Date]':
|
|
|
|
|
- case '[object Boolean]':
|
|
|
|
|
- // Coerce dates and booleans to numeric primitive values. Dates are compared by their
|
|
|
|
|
- // millisecond representations. Note that invalid dates with millisecond representations
|
|
|
|
|
- // of `NaN` are not equivalent.
|
|
|
|
|
- return +a == +b;
|
|
|
|
|
- // RegExps are compared by their source patterns and flags.
|
|
|
|
|
- case '[object RegExp]':
|
|
|
|
|
- return a.source == b.source &&
|
|
|
|
|
- a.global == b.global &&
|
|
|
|
|
- a.multiline == b.multiline &&
|
|
|
|
|
- a.ignoreCase == b.ignoreCase;
|
|
|
|
|
- }
|
|
|
|
|
- if (typeof a != 'object' || typeof b != 'object') return false;
|
|
|
|
|
- // Assume equality for cyclic structures. The algorithm for detecting cyclic
|
|
|
|
|
- // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
|
|
|
|
|
- var length = stack.length;
|
|
|
|
|
- while (length--) {
|
|
|
|
|
- // Linear search. Performance is inversely proportional to the number of
|
|
|
|
|
- // unique nested structures.
|
|
|
|
|
- if (stack[length] == a) return true;
|
|
|
|
|
- }
|
|
|
|
|
- // Add the first object to the stack of traversed objects.
|
|
|
|
|
- stack.push(a);
|
|
|
|
|
- var size = 0, result = true;
|
|
|
|
|
- // Recursively compare objects and arrays.
|
|
|
|
|
- if (className == '[object Array]') {
|
|
|
|
|
- // Compare array lengths to determine if a deep comparison is necessary.
|
|
|
|
|
- size = a.length;
|
|
|
|
|
- result = size == b.length;
|
|
|
|
|
- if (result) {
|
|
|
|
|
- // Deep compare the contents, ignoring non-numeric properties.
|
|
|
|
|
- while (size--) {
|
|
|
|
|
- // Ensure commutative equality for sparse arrays.
|
|
|
|
|
- if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
|
|
|
|
|
- }
|
|
|
|
|
- }
|
|
|
|
|
- } else {
|
|
|
|
|
- // Objects with different constructors are not equivalent.
|
|
|
|
|
- if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
|
|
|
|
|
- // Deep compare objects.
|
|
|
|
|
- for (var key in a) {
|
|
|
|
|
- if (_.has(a, key)) {
|
|
|
|
|
- // Count the expected number of properties.
|
|
|
|
|
- size++;
|
|
|
|
|
- // Deep compare each member.
|
|
|
|
|
- if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break;
|
|
|
|
|
- }
|
|
|
|
|
- }
|
|
|
|
|
- // Ensure that both objects contain the same number of properties.
|
|
|
|
|
- if (result) {
|
|
|
|
|
- for (key in b) {
|
|
|
|
|
- if (_.has(b, key) && !(size--)) break;
|
|
|
|
|
- }
|
|
|
|
|
- result = !size;
|
|
|
|
|
- }
|
|
|
|
|
- }
|
|
|
|
|
- // Remove the first object from the stack of traversed objects.
|
|
|
|
|
- stack.pop();
|
|
|
|
|
- return result;
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- // Perform a deep comparison to check if two objects are equal.
|
|
|
|
|
- _.isEqual = function(a, b) {
|
|
|
|
|
- return eq(a, b, []);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given array, string, or object empty?
|
|
|
|
|
- // An "empty" object has no enumerable own-properties.
|
|
|
|
|
- _.isEmpty = function(obj) {
|
|
|
|
|
- if (obj == null) return true;
|
|
|
|
|
- if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
|
|
|
|
|
- for (var key in obj) if (_.has(obj, key)) return false;
|
|
|
|
|
- return true;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value a DOM element?
|
|
|
|
|
- _.isElement = function(obj) {
|
|
|
|
|
- return !!(obj && obj.nodeType == 1);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value an array?
|
|
|
|
|
- // Delegates to ECMA5's native Array.isArray
|
|
|
|
|
- _.isArray = nativeIsArray || function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object Array]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given variable an object?
|
|
|
|
|
- _.isObject = function(obj) {
|
|
|
|
|
- return obj === Object(obj);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given variable an arguments object?
|
|
|
|
|
- _.isArguments = function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object Arguments]';
|
|
|
|
|
- };
|
|
|
|
|
- if (!_.isArguments(arguments)) {
|
|
|
|
|
- _.isArguments = function(obj) {
|
|
|
|
|
- return !!(obj && _.has(obj, 'callee'));
|
|
|
|
|
- };
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value a function?
|
|
|
|
|
- _.isFunction = function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object Function]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value a string?
|
|
|
|
|
- _.isString = function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object String]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value a number?
|
|
|
|
|
- _.isNumber = function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object Number]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given object a finite number?
|
|
|
|
|
- _.isFinite = function(obj) {
|
|
|
|
|
- return _.isNumber(obj) && isFinite(obj);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is the given value `NaN`?
|
|
|
|
|
- _.isNaN = function(obj) {
|
|
|
|
|
- // `NaN` is the only value for which `===` is not reflexive.
|
|
|
|
|
- return obj !== obj;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value a boolean?
|
|
|
|
|
- _.isBoolean = function(obj) {
|
|
|
|
|
- return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value a date?
|
|
|
|
|
- _.isDate = function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object Date]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is the given value a regular expression?
|
|
|
|
|
- _.isRegExp = function(obj) {
|
|
|
|
|
- return toString.call(obj) == '[object RegExp]';
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given value equal to null?
|
|
|
|
|
- _.isNull = function(obj) {
|
|
|
|
|
- return obj === null;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Is a given variable undefined?
|
|
|
|
|
- _.isUndefined = function(obj) {
|
|
|
|
|
- return obj === void 0;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Has own property?
|
|
|
|
|
- _.has = function(obj, key) {
|
|
|
|
|
- return hasOwnProperty.call(obj, key);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Utility Functions
|
|
|
|
|
- // -----------------
|
|
|
|
|
-
|
|
|
|
|
- // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
|
|
|
|
|
- // previous owner. Returns a reference to the Underscore object.
|
|
|
|
|
- _.noConflict = function() {
|
|
|
|
|
- root._ = previousUnderscore;
|
|
|
|
|
- return this;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Keep the identity function around for default iterators.
|
|
|
|
|
- _.identity = function(value) {
|
|
|
|
|
- return value;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Run a function **n** times.
|
|
|
|
|
- _.times = function (n, iterator, context) {
|
|
|
|
|
- for (var i = 0; i < n; i++) iterator.call(context, i);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Escape a string for HTML interpolation.
|
|
|
|
|
- _.escape = function(string) {
|
|
|
|
|
- return (''+string).replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"').replace(/'/g, ''').replace(/\//g,'/');
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // If the value of the named property is a function then invoke it;
|
|
|
|
|
- // otherwise, return it.
|
|
|
|
|
- _.result = function(object, property) {
|
|
|
|
|
- if (object == null) return null;
|
|
|
|
|
- var value = object[property];
|
|
|
|
|
- return _.isFunction(value) ? value.call(object) : value;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Add your own custom functions to the Underscore object, ensuring that
|
|
|
|
|
- // they're correctly added to the OOP wrapper as well.
|
|
|
|
|
- _.mixin = function(obj) {
|
|
|
|
|
- each(_.functions(obj), function(name){
|
|
|
|
|
- addToWrapper(name, _[name] = obj[name]);
|
|
|
|
|
- });
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Generate a unique integer id (unique within the entire client session).
|
|
|
|
|
- // Useful for temporary DOM ids.
|
|
|
|
|
- var idCounter = 0;
|
|
|
|
|
- _.uniqueId = function(prefix) {
|
|
|
|
|
- var id = idCounter++;
|
|
|
|
|
- return prefix ? prefix + id : id;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // By default, Underscore uses ERB-style template delimiters, change the
|
|
|
|
|
- // following template settings to use alternative delimiters.
|
|
|
|
|
- _.templateSettings = {
|
|
|
|
|
- evaluate : /<%([\s\S]+?)%>/g,
|
|
|
|
|
- interpolate : /<%=([\s\S]+?)%>/g,
|
|
|
|
|
- escape : /<%-([\s\S]+?)%>/g
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // When customizing `templateSettings`, if you don't want to define an
|
|
|
|
|
- // interpolation, evaluation or escaping regex, we need one that is
|
|
|
|
|
- // guaranteed not to match.
|
|
|
|
|
- var noMatch = /.^/;
|
|
|
|
|
-
|
|
|
|
|
- // Certain characters need to be escaped so that they can be put into a
|
|
|
|
|
- // string literal.
|
|
|
|
|
- var escapes = {
|
|
|
|
|
- '\\': '\\',
|
|
|
|
|
- "'": "'",
|
|
|
|
|
- 'r': '\r',
|
|
|
|
|
- 'n': '\n',
|
|
|
|
|
- 't': '\t',
|
|
|
|
|
- 'u2028': '\u2028',
|
|
|
|
|
- 'u2029': '\u2029'
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- for (var p in escapes) escapes[escapes[p]] = p;
|
|
|
|
|
- var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
|
|
|
|
|
- var unescaper = /\\(\\|'|r|n|t|u2028|u2029)/g;
|
|
|
|
|
-
|
|
|
|
|
- // Within an interpolation, evaluation, or escaping, remove HTML escaping
|
|
|
|
|
- // that had been previously added.
|
|
|
|
|
- var unescape = function(code) {
|
|
|
|
|
- return code.replace(unescaper, function(match, escape) {
|
|
|
|
|
- return escapes[escape];
|
|
|
|
|
- });
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // JavaScript micro-templating, similar to John Resig's implementation.
|
|
|
|
|
- // Underscore templating handles arbitrary delimiters, preserves whitespace,
|
|
|
|
|
- // and correctly escapes quotes within interpolated code.
|
|
|
|
|
- _.template = function(text, data, settings) {
|
|
|
|
|
- settings = _.defaults(settings || {}, _.templateSettings);
|
|
|
|
|
-
|
|
|
|
|
- // Compile the template source, taking care to escape characters that
|
|
|
|
|
- // cannot be included in a string literal and then unescape them in code
|
|
|
|
|
- // blocks.
|
|
|
|
|
- var source = "__p+='" + text
|
|
|
|
|
- .replace(escaper, function(match) {
|
|
|
|
|
- return '\\' + escapes[match];
|
|
|
|
|
- })
|
|
|
|
|
- .replace(settings.escape || noMatch, function(match, code) {
|
|
|
|
|
- return "'+\n_.escape(" + unescape(code) + ")+\n'";
|
|
|
|
|
- })
|
|
|
|
|
- .replace(settings.interpolate || noMatch, function(match, code) {
|
|
|
|
|
- return "'+\n(" + unescape(code) + ")+\n'";
|
|
|
|
|
- })
|
|
|
|
|
- .replace(settings.evaluate || noMatch, function(match, code) {
|
|
|
|
|
- return "';\n" + unescape(code) + "\n;__p+='";
|
|
|
|
|
- }) + "';\n";
|
|
|
|
|
-
|
|
|
|
|
- // If a variable is not specified, place data values in local scope.
|
|
|
|
|
- if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
|
|
|
|
|
-
|
|
|
|
|
- source = "var __p='';" +
|
|
|
|
|
- "var print=function(){__p+=Array.prototype.join.call(arguments, '')};\n" +
|
|
|
|
|
- source + "return __p;\n";
|
|
|
|
|
-
|
|
|
|
|
- var render = new Function(settings.variable || 'obj', '_', source);
|
|
|
|
|
- if (data) return render(data, _);
|
|
|
|
|
- var template = function(data) {
|
|
|
|
|
- return render.call(this, data, _);
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Provide the compiled function source as a convenience for build time
|
|
|
|
|
- // precompilation.
|
|
|
|
|
- template.source = 'function(' + (settings.variable || 'obj') + '){\n' +
|
|
|
|
|
- source + '}';
|
|
|
|
|
-
|
|
|
|
|
- return template;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Add a "chain" function, which will delegate to the wrapper.
|
|
|
|
|
- _.chain = function(obj) {
|
|
|
|
|
- return _(obj).chain();
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // The OOP Wrapper
|
|
|
|
|
- // ---------------
|
|
|
|
|
-
|
|
|
|
|
- // If Underscore is called as a function, it returns a wrapped object that
|
|
|
|
|
- // can be used OO-style. This wrapper holds altered versions of all the
|
|
|
|
|
- // underscore functions. Wrapped objects may be chained.
|
|
|
|
|
- var wrapper = function(obj) { this._wrapped = obj; };
|
|
|
|
|
-
|
|
|
|
|
- // Expose `wrapper.prototype` as `_.prototype`
|
|
|
|
|
- _.prototype = wrapper.prototype;
|
|
|
|
|
-
|
|
|
|
|
- // Helper function to continue chaining intermediate results.
|
|
|
|
|
- var result = function(obj, chain) {
|
|
|
|
|
- return chain ? _(obj).chain() : obj;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // A method to easily add functions to the OOP wrapper.
|
|
|
|
|
- var addToWrapper = function(name, func) {
|
|
|
|
|
- wrapper.prototype[name] = function() {
|
|
|
|
|
- var args = slice.call(arguments);
|
|
|
|
|
- unshift.call(args, this._wrapped);
|
|
|
|
|
- return result(func.apply(_, args), this._chain);
|
|
|
|
|
- };
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Add all of the Underscore functions to the wrapper object.
|
|
|
|
|
- _.mixin(_);
|
|
|
|
|
-
|
|
|
|
|
- // Add all mutator Array functions to the wrapper.
|
|
|
|
|
- each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
|
|
|
|
|
- var method = ArrayProto[name];
|
|
|
|
|
- wrapper.prototype[name] = function() {
|
|
|
|
|
- var wrapped = this._wrapped;
|
|
|
|
|
- method.apply(wrapped, arguments);
|
|
|
|
|
- var length = wrapped.length;
|
|
|
|
|
- if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0];
|
|
|
|
|
- return result(wrapped, this._chain);
|
|
|
|
|
- };
|
|
|
|
|
- });
|
|
|
|
|
-
|
|
|
|
|
- // Add all accessor Array functions to the wrapper.
|
|
|
|
|
- each(['concat', 'join', 'slice'], function(name) {
|
|
|
|
|
- var method = ArrayProto[name];
|
|
|
|
|
- wrapper.prototype[name] = function() {
|
|
|
|
|
- return result(method.apply(this._wrapped, arguments), this._chain);
|
|
|
|
|
- };
|
|
|
|
|
- });
|
|
|
|
|
-
|
|
|
|
|
- // Start chaining a wrapped Underscore object.
|
|
|
|
|
- wrapper.prototype.chain = function() {
|
|
|
|
|
- this._chain = true;
|
|
|
|
|
- return this;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // Extracts the result from a wrapped and chained object.
|
|
|
|
|
- wrapper.prototype.value = function() {
|
|
|
|
|
- return this._wrapped;
|
|
|
|
|
- };
|
|
|
|
|
-
|
|
|
|
|
- // AMD define happens at the end for compatibility with AMD loaders
|
|
|
|
|
- // that don't enforce next-turn semantics on modules.
|
|
|
|
|
- if (typeof define === 'function' && define.amd) {
|
|
|
|
|
- define('underscore', function() {
|
|
|
|
|
- return _;
|
|
|
|
|
- });
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
-}).call(this);
|
|
|