Trait ErrorContext

pub trait ErrorContext<T> {
    // Required methods
    fn context(self, msg: impl Display) -> Result<T>;
    fn with_context<F>(self, f: F) -> Result<T>
       where F: FnOnce() -> String;
}

Extension trait for converting errors with context

Required Methods

fn context(self, msg: impl Display) -> Result<T>

Add context to an error

Errors

Returns the original error with added context

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

where F: FnOnce() -> String,

Add context with a closure

Errors

Returns the original error with added context from the closure

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, E> ErrorContext<T> for Result<T, E>

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

fn context(self, msg: impl Display) -> Result<T>

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

where F: FnOnce() -> String,

Implementors