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.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

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