Trait Context 

pub trait Context<T, E>: Sealed {
    // Required methods
    fn context<C>(self, context: C) -> Result<T, Error>
       where C: Display + Send + Sync + 'static;
    fn with_context<C, F>(self, f: F) -> Result<T, Error>
       where C: Display + Send + Sync + 'static,
             F: FnOnce() -> C;
}

Attach more context to an error.

Required Methods

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

where C: Display + Send + Sync + 'static,

Wrap the error value with additional context.

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

where C: Display + Send + Sync + 'static, F: FnOnce() -> C,

Wrap the error value with additional context evaluated lazily.

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

where E: Error + Send + Sync + 'static,

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

where C: Display + Send + Sync + 'static,

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

where C: Display + Send + Sync + 'static, F: FnOnce() -> C,

impl<T> Context<T, !> for Option<T>

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

where C: Display + Send + Sync + 'static,

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

where C: Display + Send + Sync + 'static, F: FnOnce() -> C,

Implementors