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37 lines
1.2 KiB
JavaScript
37 lines
1.2 KiB
JavaScript
var baseAt = require('../internal/baseAt'),
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baseFlatten = require('../internal/baseFlatten'),
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getLength = require('../internal/getLength'),
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isLength = require('../internal/isLength'),
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restParam = require('../function/restParam'),
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toIterable = require('../internal/toIterable');
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/**
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* Creates an array of elements corresponding to the given keys, or indexes,
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* of `collection`. Keys may be specified as individual arguments or as arrays
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* of keys.
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*
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* @static
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* @memberOf _
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* @category Collection
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* @param {Array|Object|string} collection The collection to iterate over.
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* @param {...(number|number[]|string|string[])} [props] The property names
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* or indexes of elements to pick, specified individually or in arrays.
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* @returns {Array} Returns the new array of picked elements.
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* @example
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*
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* _.at(['a', 'b', 'c'], [0, 2]);
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* // => ['a', 'c']
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*
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* _.at(['barney', 'fred', 'pebbles'], 0, 2);
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* // => ['barney', 'pebbles']
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*/
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var at = restParam(function(collection, props) {
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var length = collection ? getLength(collection) : 0;
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if (isLength(length)) {
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collection = toIterable(collection);
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}
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return baseAt(collection, baseFlatten(props));
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});
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module.exports = at;
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