Trait WithContext

pub trait WithContext<T>: Sized {
    // Required methods
    fn context(self, loc: &'static str) -> Result<T>;
    fn with_context<F>(self, loc: &'static str, f: F) -> Result<T>
       where F: FnOnce() -> Option<Box<[(&'static str, String)]>>;
}

A trait to add context to a result.

Required Methods

fn context(self, loc: &'static str) -> Result<T>

Add a context to the result.

fn with_context<F>(self, loc: &'static str, f: F) -> Result<T>

where F: FnOnce() -> Option<Box<[(&'static str, String)]>>,

Add a context to the result with additional arguments.

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> WithContext<T> for Option<T>

fn context(self, loc: &'static str) -> Result<T>

fn with_context<F>(self, loc: &'static str, f: F) -> Result<T>

where F: FnOnce() -> Option<Box<[(&'static str, String)]>>,

Implementors

impl<T, E: ErrKindExt> WithContext<T> for Result<T, E>