From: [email protected] [[email protected]] on behalf
of Rick Waldron [[email protected]]
> Thanks, I've submitted an agenda item that includes _both_ find and findIndex.
Awesome!
One issue with `find` is what distinguishes
find([1, 2, 3], x => isNaN(x)); // presumably `undefined`
from
find([1, 2, undefined, 3], x => isNaN(x)); // also presumably `undefined`
i.e. how do you distinguish "found nothing" from "found `undefined`."
In C# they have `IEnumerable<T>.First` and `IEnumerable<T>.FirstOrDefault`; the
former throws an error if nothing matching the predicate is found, whereas the
latter returns `default(T)` (which is `null` for reference types, or `0` for
numbers, etc.).
Food for thought.
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