Trait ErrorContext 

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

Trait for adding context to errors.

This trait allows chaining contextual information to errors, making it easier to track the source and cause of errors.

Example

use rh_foundation::ErrorContext;

fn read_config() -> rh_foundation::Result<String> {
    std::fs::read_to_string("config.json")
        .context("Failed to read configuration file")?;
    Ok("config".to_string())
}

Required Methods

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

Add context to an error

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

where F: FnOnce() -> String,

Add context with a function (lazy evaluation)

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

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

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

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

where F: FnOnce() -> String,

Implementors