Yang Guo | 4fd355c | 2019-09-19 08:59:03 | [diff] [blame^] | 1 | var createWrap = require('./_createWrap'), |
| 2 | flatRest = require('./_flatRest'); |
| 3 | |
| 4 | /** Used to compose bitmasks for function metadata. */ |
| 5 | var WRAP_REARG_FLAG = 256; |
| 6 | |
| 7 | /** |
| 8 | * Creates a function that invokes `func` with arguments arranged according |
| 9 | * to the specified `indexes` where the argument value at the first index is |
| 10 | * provided as the first argument, the argument value at the second index is |
| 11 | * provided as the second argument, and so on. |
| 12 | * |
| 13 | * @static |
| 14 | * @memberOf _ |
| 15 | * @since 3.0.0 |
| 16 | * @category Function |
| 17 | * @param {Function} func The function to rearrange arguments for. |
| 18 | * @param {...(number|number[])} indexes The arranged argument indexes. |
| 19 | * @returns {Function} Returns the new function. |
| 20 | * @example |
| 21 | * |
| 22 | * var rearged = _.rearg(function(a, b, c) { |
| 23 | * return [a, b, c]; |
| 24 | * }, [2, 0, 1]); |
| 25 | * |
| 26 | * rearged('b', 'c', 'a') |
| 27 | * // => ['a', 'b', 'c'] |
| 28 | */ |
| 29 | var rearg = flatRest(function(func, indexes) { |
| 30 | return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes); |
| 31 | }); |
| 32 | |
| 33 | module.exports = rearg; |