Trait InfallibleResultExt 

pub trait InfallibleResultExt<E> {
    // Required method
    fn extract_err(self) -> E;
}

Extension trait for Results that are known to always be Err

Required Methods

fn extract_err(self) -> E

Extract the error value from a Result that is known to always be Err

This is a stable alternative to the nightly-only into_err() method. Use this when you have a Result<T, E> where T is an uninhabited type or when you know the Result will always be Err.

Implementations on Foreign Types

impl<E> InfallibleResultExt<E> for Result<Infallible, E>

fn extract_err(self) -> E

Implementors