| /** |
| * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/> |
| * Build: `lodash modularize exports="node" -o ./compat/` |
| * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/> |
| * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE> |
| * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors |
| * Available under MIT license <http://lodash.com/license> |
| */ |
| var createIterator = require('../internals/createIterator'), |
| defaultsIteratorOptions = require('../internals/defaultsIteratorOptions'); |
| |
| /** |
| * Assigns own enumerable properties of source object(s) to the destination |
| * object. Subsequent sources will overwrite property assignments of previous |
| * sources. If a callback is provided it will be executed to produce the |
| * assigned values. The callback is bound to `thisArg` and invoked with two |
| * arguments; (objectValue, sourceValue). |
| * |
| * @static |
| * @memberOf _ |
| * @type Function |
| * @alias extend |
| * @category Objects |
| * @param {Object} object The destination object. |
| * @param {...Object} [source] The source objects. |
| * @param {Function} [callback] The function to customize assigning values. |
| * @param {*} [thisArg] The `this` binding of `callback`. |
| * @returns {Object} Returns the destination object. |
| * @example |
| * |
| * _.assign({ 'name': 'fred' }, { 'employer': 'slate' }); |
| * // => { 'name': 'fred', 'employer': 'slate' } |
| * |
| * var defaults = _.partialRight(_.assign, function(a, b) { |
| * return typeof a == 'undefined' ? b : a; |
| * }); |
| * |
| * var object = { 'name': 'barney' }; |
| * defaults(object, { 'name': 'fred', 'employer': 'slate' }); |
| * // => { 'name': 'barney', 'employer': 'slate' } |
| */ |
| var assign = createIterator(defaultsIteratorOptions, { |
| 'top': |
| defaultsIteratorOptions.top.replace(';', |
| ';\n' + |
| "if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {\n" + |
| ' var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);\n' + |
| "} else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {\n" + |
| ' callback = args[--argsLength];\n' + |
| '}' |
| ), |
| 'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]' |
| }); |
| |
| module.exports = assign; |