Bits of .NET

Getting last array element with arr[arr.length – 1] is verbose. Use .at() instead.

Old Way:

const arr = [10, 20, 30, 40, 50];
const last = arr[arr.length - 1];  // 50
const secondLast = arr[arr.length - 2];  // 40

New Way:

const last = arr.at(-1);  // 50
const secondLast = arr.at(-2);  // 40
const first = arr.at(0);  // 10

Negative indices count from end. Clean and readable!

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