Manan Tank MananTank
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| const map = new Map() | |
| for (let i=0; i<array.length; i++) { | |
| map.set(array[i], i) | |
| } |
MananTank
/ superArray.js
Created
September 8, 2020 16:39
create arrays with super powers, with negative indexing and range support.
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| // code to create arrays with super powers ! | |
| const superArray = (initArray) => { | |
| const toPos = (index, target) => { | |
| const _index = Number(index); | |
| return index < 0 ? target.length + _index : _index; | |
| }; | |
| return new Proxy(initArray, { | |
| get(target, prop) { |