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fix/update intializeArrayWithRange.md

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King
2017-12-19 04:52:44 -05:00
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snippets/initializeArrayWithRange.md
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### initializeArrayWithRange ### initializeArrayWithRange
Initializes an array containing the numbers in the specified range. Initializes an array containing the numbers in the specified range where `start` and `end` are inclusive.
Use `Array(end-start)` to create an array of the desired length, `Array.map()` to fill with the desired values in a range. Use `Array(end-start)` to create an array of the desired length, `Array.map()` to fill with the desired values in a range.
You can omit `start` to use a default value of `0`. You can omit `start` to use a default value of `0`.
```js ```js
const initializeArrayWithRange = (end, start = 0) => const initializeArrayWithRange = (end, start = 0) =>
Array.from({ length: end - start }).map((v, i) => i + start); Array.from({ length: (end + 1) - start }).map((v, i) => i + start);
// initializeArrayWithRange(5) -> [0,1,2,3,4] // initializeArrayWithRange(5) -> [0,1,2,3,4,5]
// initializeArrayWithRange(7, 3) -> [3,4,5,6,7]
``` ```