diff --git a/snippets/pullAll.md b/snippets/pullAll.md new file mode 100644 index 000000000..ab8bf2285 --- /dev/null +++ b/snippets/pullAll.md @@ -0,0 +1,16 @@ +### pullAll + +Mutates the original array to filter out the values specified (accepts an array of values). + +Use `Array.filter()` and `Array.includes()` to pull out the values that are not needed. +Use `Array.length = 0` to mutate the passed in array by resetting it's length to zero and `Array.push()` to re-populate it with only the pulled values. + +```js +const pullAll = (arr, pullArr) => { + let pulled = arr.filter((v, i) => !pullArr.includes(v)); + arr.length = 0; pulled.forEach(v => arr.push(v)); +} +// let myArray = ['a', 'b', 'c', 'a', 'b', 'c']; +// pullAll(myArray, ['a', 'c']); +// console.log(myArray) -> [ 'b', 'b' ] +``` diff --git a/tag_database b/tag_database index 9f48d15cb..7e4b9f68d 100644 --- a/tag_database +++ b/tag_database @@ -72,6 +72,7 @@ pipe:function powerset:math promisify:function pull:array +pullAll:array randomIntegerInRange:math randomNumberInRange:math readFileLines:node