From f3f1daede9385f11d9500a437b9f62f5d329bc9c Mon Sep 17 00:00:00 2001 From: Chao Date: Thu, 4 Jan 2018 11:37:10 +0800 Subject: [PATCH] Update differenceWith.md use Array.findIndex() instead of Array.find() --- snippets/differenceWith.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/snippets/differenceWith.md b/snippets/differenceWith.md index 7262ef1b3..48ceedff8 100644 --- a/snippets/differenceWith.md +++ b/snippets/differenceWith.md @@ -2,12 +2,12 @@ Filters out all values from an array for which the comparator function does not return `true`. -Use `Array.filter()` and `Array.find()` to find the appropriate values. +Use `Array.filter()` and `Array.findIndex()` to find the appropriate values. ```js -const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b))); +const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1); ``` ```js -differenceWith([1, 1.2, 1.5, 3], [1.9, 3], (a, b) => Math.round(a) == Math.round(b)); // [1, 1.2] +differenceWith([1, 1.2, 1.5, 3, 0], [1.9, 3, 0], (a, b) => Math.round(a) === Math.round(b)); // [1, 1.2] ```