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Merge pull request #712 from Bruce-Feldman/Simplify-nth_Element

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[ENHANCEMENT] Simplified nth Element, added better support for negative numbers thanks to @Bruce-Feldman
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Robert Mennell
2018-08-16 13:30:23 -07:00
committed by GitHub
parent 824a57ad59 59183e03b3
commit c6dc81b00b
2 changed files with 3 additions and 3 deletions
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4
snippets/nthElement.md
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@ -3,11 +3,11 @@
Returns the nth element of an array.
Use `Array.slice()` to get an array containing the nth element at the first place.
If the index is out of bounds, return `[]`.
If the index is out of bounds, return `undefined`.
Omit the second argument, `n`, to get the first element of the array.
```js
const nthElement = (arr, n = 0) => (n > 0 ? arr.slice(n, n + 1) : arr.slice(n))[0];
const nthElement = (arr, n = 0) => (n === -1 ? arr.slice(n) : arr.slice(n, n + 1))[0];
```
```js

2
test/nthElement/nthElement.js
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@ -1,2 +1,2 @@
const nthElement = (arr, n = 0) => (n > 0 ? arr.slice(n, n + 1) : arr.slice(n))[0];
const nthElement = (arr, n = 0) => (n === -1 ? arr.slice(n) : arr.slice(n, n + 1))[0];
module.exports = nthElement;