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