Trait ResultExt 

pub trait ResultExt<T, E> {
    // Required methods
    fn ok_checked<EE: EqType<E>>(self) -> Option<T>;
    fn err_checked<TT: EqType<T>>(self) -> Option<E>;
}

An extension trait adding functionality to Result.

Required Methods

fn ok_checked<EE: EqType<E>>(self) -> Option<T>

Like Result::ok, but the caller must provide the error type being discarded.

This allows code to be written which will stop compiling if a result’s error type changes in the future.

fn err_checked<TT: EqType<T>>(self) -> Option<E>

Like Result::err, but the caller must provide the ok type being discarded.

This allows code to be written which will stop compiling if a result’s ok type changes in the future.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<T, E> ResultExt<T, E> for Result<T, E>

fn ok_checked<EE: EqType<E>>(self) -> Option<T>

fn err_checked<TT: EqType<T>>(self) -> Option<E>

Implementors