Trait Context

pub trait Context<T> {
    // Required method
    fn context<C>(self, context: C) -> Result<T, Error>
       where C: Display;

    // Provided method
    fn with_context<F, C>(self, context_fn: F) -> Result<T, Error>
       where C: Display,
             F: FnOnce() -> C,
             Self: Sized { ... }
}

Utility to add more context to the Error.

Required Methods

fn context<C>(self, context: C) -> Result<T, Error>

where C: Display,

Adds more context to the Error.

Provided Methods

fn with_context<F, C>(self, context_fn: F) -> Result<T, Error>

where C: Display, F: FnOnce() -> C, Self: Sized,

Adds more context to the Error that is evaluated lazily.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T> Context<T> for Option<T>

fn context<C>(self, context: C) -> Result<T, Error>

where C: Display,

Implementors

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

where E: Into<Error>,