errs

In std/collections.

elementwise fn errs<F<_> : Collection<_>, T, E>(self: F<Result<T, E>>) : F<E>

The error values of a collection of results, in an F<E>; the successes are dropped: [ok(1), err("x"), ok(3)] | errs is ["x"].

elementwise fn errs<T, E>(self: Stream<Result<T, E>>) : Stream<E>

The error values of a stream of results, as a stream; the successes are dropped.