8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
19 lines
573 B
Markdown
19 lines
573 B
Markdown
### chunk
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Chunks an array into smaller arrays of a specified size.
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Use `Array.from()` to create a new array, that fits the number of chunks that will be produced.
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Use `Array.prototype.slice()` to map each element of the new array to a chunk the length of `size`.
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If the original array can't be split evenly, the final chunk will contain the remaining elements.
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```js
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const chunk = (arr, size) =>
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Array.from({ length: Math.ceil(arr.length / size) }, (v, i) =>
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arr.slice(i * size, i * size + size)
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);
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```
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```js
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chunk([1, 2, 3, 4, 5], 2); // [[1,2],[3,4],[5]]
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```
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