From ff0a05a2d67f45ec9ff06d50c5be821d559c2528 Mon Sep 17 00:00:00 2001
From: Aya Morisawa <AyaMorisawa4869@gmail.com>
Date: Fri, 7 Sep 2018 00:10:03 +0900
Subject: Add unique function (#2644)

---
 src/prelude/array.ts | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/prelude/array.ts')

diff --git a/src/prelude/array.ts b/src/prelude/array.ts
index a2a6bbd4c6..abef6ca039 100644
--- a/src/prelude/array.ts
+++ b/src/prelude/array.ts
@@ -17,3 +17,7 @@ export function intersperse<T>(sep: T, xs: T[]): T[] {
 export function erase<T>(x: T, xs: T[]): T[] {
 	return xs.filter(y => x !== y);
 }
+
+export function unique<T>(xs: T[]): T[] {
+	return [...new Set(xs)];
+}
-- 
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