| var createWrap = require('./_createWrap'); |
| |
| /** Used to compose bitmasks for function metadata. */ |
| var WRAP_ARY_FLAG = 128; |
| |
| /** |
| * Creates a function that invokes `func`, with up to `n` arguments, |
| * ignoring any additional arguments. |
| * |
| * @static |
| * @memberOf _ |
| * @since 3.0.0 |
| * @category Function |
| * @param {Function} func The function to cap arguments for. |
| * @param {number} [n=func.length] The arity cap. |
| * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. |
| * @returns {Function} Returns the new capped function. |
| * @example |
| * |
| * _.map(['6', '8', '10'], _.ary(parseInt, 1)); |
| * // => [6, 8, 10] |
| */ |
| function ary(func, n, guard) { |
| n = guard ? undefined : n; |
| n = (func && n == null) ? func.length : n; |
| return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n); |
| } |
| |
| module.exports = ary; |
