Extracts the error value type E from a Result.Err<E>. If the Result is Result.Ok<S>, resolves to never.
E
Result.Err<E>
Result
Result.Ok<S>
never
The Result.Base type to unwrap.
Result.Base
Extracts the error value type
E
from aResult.Err<E>
. If theResult
isResult.Ok<S>
, resolves tonever
.