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update: map return in a simple way

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魏银鹏
2020-09-02 17:35:13 +08:00
parent a0290983b3
commit 0834aee18f
1 changed files with 4 additions and 4 deletions
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snippets/aperture.md
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@ -12,11 +12,11 @@ If `n` is greater than the length of `arr`, return an empty array.
const aperture = (n, arr) => const aperture = (n, arr) =>
n > arr.length n > arr.length
? [] ? []
: arr.slice(n - 1).map((v, i) => [...arr.slice(i, i + n - 1), v]); : arr.slice(n - 1).map((v, i) => arr.slice(i, i + n));
``` ```
```js ```js
R.aperture(2, [1, 2, 3, 4]); // [[1, 2], [2, 3], [3, 4]] aperture(2, [1, 2, 3, 4]); // [[1, 2], [2, 3], [3, 4]]
R.aperture(3, [1, 2, 3, 4]); // [[1, 2, 3], [2, 3, 4]] aperture(3, [1, 2, 3, 4]); // [[1, 2, 3], [2, 3, 4]]
R.aperture(5, [1, 2, 3, 4]); // [] aperture(5, [1, 2, 3, 4]); // []
``` ```