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var baseIteratee = require('./_baseIteratee'), | |
basePullAt = require('./_basePullAt'); | |
/** | |
* Removes all elements from `array` that `predicate` returns truthy for | |
* and returns an array of the removed elements. The predicate is invoked | |
* with three arguments: (value, index, array). | |
* | |
* **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` | |
* to pull elements from an array by value. | |
* | |
* @static | |
* @memberOf _ | |
* @since 2.0.0 | |
* @category Array | |
* @param {Array} array The array to modify. | |
* @param {Function} [predicate=_.identity] The function invoked per iteration. | |
* @returns {Array} Returns the new array of removed elements. | |
* @example | |
* | |
* var array = [1, 2, 3, 4]; | |
* var evens = _.remove(array, function(n) { | |
* return n % 2 == 0; | |
* }); | |
* | |
* console.log(array); | |
* // => [1, 3] | |
* | |
* console.log(evens); | |
* // => [2, 4] | |
*/ | |
function remove(array, predicate) { | |
var result = []; | |
if (!(array && array.length)) { | |
return result; | |
} | |
var index = -1, | |
indexes = [], | |
length = array.length; | |
predicate = baseIteratee(predicate, 3); | |
while (++index < length) { | |
var value = array[index]; | |
if (predicate(value, index, array)) { | |
result.push(value); | |
indexes.push(index); | |
} | |
} | |
basePullAt(array, indexes); | |
return result; | |
} | |
module.exports = remove; | |