| /** Used as the `TypeError` message for "Functions" methods. */ |
| var FUNC_ERROR_TEXT = 'Expected a function'; |
| |
| /** |
| * Creates a function that invokes `func` with the `this` binding of the created |
| * function and an array of arguments much like [`Function#apply`](https://es5.github.io/#x15.3.4.3). |
| * |
| * **Note:** This method is based on the [spread operator](https://developer.mozilla.org/Web/JavaScript/Reference/Operators/Spread_operator). |
| * |
| * @static |
| * @memberOf _ |
| * @category Function |
| * @param {Function} func The function to spread arguments over. |
| * @returns {Function} Returns the new function. |
| * @example |
| * |
| * var say = _.spread(function(who, what) { |
| * return who + ' says ' + what; |
| * }); |
| * |
| * say(['fred', 'hello']); |
| * // => 'fred says hello' |
| * |
| * // with a Promise |
| * var numbers = Promise.all([ |
| * Promise.resolve(40), |
| * Promise.resolve(36) |
| * ]); |
| * |
| * numbers.then(_.spread(function(x, y) { |
| * return x + y; |
| * })); |
| * // => a Promise of 76 |
| */ |
| function spread(func) { |
| if (typeof func != 'function') { |
| throw new TypeError(FUNC_ERROR_TEXT); |
| } |
| return function(array) { |
| return func.apply(this, array); |
| }; |
| } |
| |
| module.exports = spread; |