mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-01 15:57:48 +00:00
119 lines
3.5 KiB
JavaScript
119 lines
3.5 KiB
JavaScript
/**
|
|
* lodash 3.0.1 (Custom Build) <https://lodash.com/>
|
|
* Build: `lodash modern modularize exports="npm" -o ./`
|
|
* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
|
|
* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
|
|
* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
|
|
* Available under MIT license <https://lodash.com/license>
|
|
*/
|
|
var baseCallback = require('lodash._basecallback');
|
|
|
|
/** Used for native method references. */
|
|
var arrayProto = Array.prototype;
|
|
|
|
/** Native method references. */
|
|
var splice = arrayProto.splice;
|
|
|
|
/**
|
|
* Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
|
|
* of an array-like value.
|
|
*/
|
|
var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
|
|
|
|
/**
|
|
* The base implementation of `_.pullAt` without support for individual
|
|
* index arguments and capturing the removed elements.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to modify.
|
|
* @param {number[]} indexes The indexes of elements to remove.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function basePullAt(array, indexes) {
|
|
var length = indexes.length;
|
|
while (length--) {
|
|
var index = parseFloat(indexes[length]);
|
|
if (index != previous && isIndex(index)) {
|
|
var previous = index;
|
|
splice.call(array, index, 1);
|
|
}
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a valid array-like index.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
|
|
* @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
|
|
*/
|
|
function isIndex(value, length) {
|
|
value = +value;
|
|
length = length == null ? MAX_SAFE_INTEGER : length;
|
|
return value > -1 && value % 1 == 0 && value < length;
|
|
}
|
|
|
|
/**
|
|
* Removes all elements from `array` that `predicate` returns truthy for
|
|
* and returns an array of the removed elements. The predicate is bound to
|
|
* `thisArg` and invoked with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* **Note:** Unlike `_.filter`, this method mutates `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to modify.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @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, thisArg) {
|
|
var result = [];
|
|
if (!(array && array.length)) {
|
|
return result;
|
|
}
|
|
var index = -1,
|
|
indexes = [],
|
|
length = array.length;
|
|
|
|
predicate = baseCallback(predicate, thisArg, 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;
|