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esundahl/array-construction.js

Last active April 14, 2021 20:28
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Create a new array with values 0-99
Raw
array-construction.js
// https://itnext.io/heres-why-mapping-a-constructed-array-doesn-t-work-in-javascript-f1195138615a
Array(100).map((_, i) => i) // Won't work
[...Array(100)].map((_, i) => i) // Will work
const range = (start, end) => Array.from({ length: end - start + 1 }, (x, i) => i + start)
range(0, 100)
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