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Add Collection.filterArray

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This commit is contained in:
Schuyler Cebulskie 2016-10-15 01:20:31 -04:00
parent fe2192d544
commit 6baf43dc24
1 changed files with 19 additions and 3 deletions
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22
src/util/Collection.js
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@ -205,11 +205,27 @@ class Collection extends Map {
*/ */
filter(fn, thisArg) { filter(fn, thisArg) {
if (thisArg) fn = fn.bind(thisArg); if (thisArg) fn = fn.bind(thisArg);
const collection = new Collection(); const results = new Collection();
for (const [key, val] of this) { for (const [key, val] of this) {
if (fn(val, key, this)) collection.set(key, val); if (fn(val, key, this)) results.set(key, val);
} }
return collection; return results;
}
/**
* Identical to
* [Array.filter()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter).
* @param {function} fn Function used to test (should return a boolean)
* @param {Object} [thisArg] Value to use as `this` when executing function
* @returns {Collection}
*/
filterArray(fn, thisArg) {
if (thisArg) fn = fn.bind(thisArg);
const results = [];
for (const [key, val] of this) {
if (fn(val, key, this)) results.push(val);
}
return results;
} }
/** /**