From 758f8547d4e215855e094c9a5b2cb00402e1f666 Mon Sep 17 00:00:00 2001
From: taltmann42 <taltmann42@users.noreply.github.com>
Date: Mon, 18 Dec 2017 19:00:24 +0100
Subject: [PATCH] Create difference-with.md

---
 snippets/difference-with.md | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 snippets/difference-with.md

diff --git a/snippets/difference-with.md b/snippets/difference-with.md
new file mode 100644
index 000000000..70f43a5c5
--- /dev/null
+++ b/snippets/difference-with.md
@@ -0,0 +1,9 @@
+### Array differenceWith
+
+`filter`s out all values from `arr` for which the comparator `comp(a,b)` function never returns `true`
+
+```js
+const differenceWith = (arr, val, comp) => arr.filter(a => !val.find(b => comp(a, b)))
+
+//differenceWith([1, 1.2, 1.5, 3], [1.9, 3], (a,b) => Math.round(a) == Math.round(b)) -> [1, 1.2]
+```