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livemehere/arr.ts

Created April 4, 2024 04:28
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Be careful when initialize array with object
Raw
arr.ts
const _grid: T[][] = Array(cols).fill([]); // X (Each index value has same memory address)
const _grid: T[][] = Array.from({ length: cols }, () => []); // OK
const _grid: T[][] = Array(cols).fill(undefined).map(() => []); // OK
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