Last of Array with Aaron Harper - TypeScript Type Challenges #15 [MEDIUM]

Accessing the values of an array is an essential skill. This one seems a little tricky at first, but before long the solution should become more clear. It seems pedantic, but it's going to come up again: trust me.

00:00 description of the challenge
00:19 attempt at a solution
01:17 all tests pass
01:20 alternatives

[MichiganTypeScript]

Aaron Harper is a software engineer at Inngest, building an SDK-driven platform that simplifies event-driven architecture. TypeScript and Go are his languages of choice, but he's cool with anything that lets him stay far away from object-oriented programming. He loves programming, gardening, and spending time outside with his growing family.

[FunctionGermany]

"well uhh i wouldn't have had the typo" - burned!

[lucasmartins]

I dont even work with TS, but watching this videos is teaching me so many things, the solution changing the size of the array is crazy smart

[FunctionGermany]

damn that one with the array extension to use T["length"] is super creative =O

[justsample]

indeed interesting alternative solution!

[felipegutierrez]

Where Last1 dude learn this kind of things??? That was crazy!

[harunskender]

type Last<T extends unknown[]> = T extends [infer Head, ...infer Tail] ? Tail extends [] ? Head : Last<Tail> : never