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Simplify intersectionBy

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Siarhei
2018-09-04 17:00:12 +04:00
parent ef33238858
commit a14d808c18
2 changed files with 2 additions and 2 deletions
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2
snippets/intersectionBy.md
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@ -6,7 +6,7 @@ Create a `Set` by applying `fn` to all elements in `b`, then use `Array.filter()
```js ```js
const intersectionBy = (a, b, fn) => { const intersectionBy = (a, b, fn) => {
const s = new Set(b.map(x => fn(x))); const s = new Set(b.map(fn));
return a.filter(x => s.has(fn(x))); return a.filter(x => s.has(fn(x)));
}; };
``` ```

2
test/intersectionBy/intersectionBy.js
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@ -1,5 +1,5 @@
const intersectionBy = (a, b, fn) => { const intersectionBy = (a, b, fn) => {
const s = new Set(b.map(x => fn(x))); const s = new Set(b.map(fn));
return a.filter(x => s.has(fn(x))); return a.filter(x => s.has(fn(x)));
}; };
module.exports = intersectionBy; module.exports = intersectionBy;