Simplify differenceBy

2018-10-17 12:01:48 +04:00
parent 4c926b26cd
commit bff7a3b0bb
2 changed files with 2 additions and 2 deletions
--- a/test/differenceBy/differenceBy.js
+++ b/test/differenceBy/differenceBy.js
@ -1,5 +1,5 @@
 const differenceBy = (a, b, fn) => {
-  const s = new Set(b.map(v => fn(v)));
+  const s = new Set(b.map(fn));
  return a.filter(x => !s.has(fn(x)));
 };
 module.exports = differenceBy;