6 ms·
> head extracts the first element of a list, which must be non-empty. Those functions operate on lists. I think it should read as follows. const head = (x
by nunull 11y ago
> head extracts the first element of a list, which must be non-empty.
Those functions operate on lists. I think it should read as follows.
const head = (xs) => xs[0];
const last = (xs) => xs[xs.length-1];
const tail = (xs) => xs.slice(1);
const init = (xs) => xs.slice(0, -1);
Am I missing something?
- olalonde 11y agoFor some reason, the original author decided the arguments themselves were the "list" to operate on which is indeed a bit weird and non idiomatic.