Trait Context 

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

Extension trait to add context to errors.

Required Methods

fn context<C: Display + Send + Sync + 'static>(self, ctx: C) -> Result<T>

Adds context to an error.

Errors

Returns the original error with the new context attached.

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

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

Adds lazy context to an error.

Errors

Returns the original error with the new context attached.

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: Display + Send + Sync + 'static>(self, ctx: C) -> Result<T>

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

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

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

where NexError: From<E>,

fn context<C: Display + Send + Sync + 'static>(self, ctx: C) -> Result<T>

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

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

Implementors