1
|
var createWrap = require('./_createWrap');
|
2
|
|
3
|
/** Used to compose bitmasks for function metadata. */
|
4
|
var WRAP_ARY_FLAG = 128;
|
5
|
|
6
|
/**
|
7
|
* Creates a function that invokes `func`, with up to `n` arguments,
|
8
|
* ignoring any additional arguments.
|
9
|
*
|
10
|
* @static
|
11
|
* @memberOf _
|
12
|
* @since 3.0.0
|
13
|
* @category Function
|
14
|
* @param {Function} func The function to cap arguments for.
|
15
|
* @param {number} [n=func.length] The arity cap.
|
16
|
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
|
17
|
* @returns {Function} Returns the new capped function.
|
18
|
* @example
|
19
|
*
|
20
|
* _.map(['6', '8', '10'], _.ary(parseInt, 1));
|
21
|
* // => [6, 8, 10]
|
22
|
*/
|
23
|
function ary(func, n, guard) {
|
24
|
n = guard ? undefined : n;
|
25
|
n = (func && n == null) ? func.length : n;
|
26
|
return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
|
27
|
}
|
28
|
|
29
|
module.exports = ary;
|