Trait ResultExt

pub trait ResultExt<T, E> {
    // Required methods
    fn log_error(self, msg: &str) -> Self;
    fn with_context<F, C>(self, f: F) -> Result<T, ContextError<E, C>>
       where F: FnOnce() -> C,
             E: StdError + 'static,
             C: Display + Debug + Send + Sync + 'static;
}

Extension trait for Result to add logging and context

Required Methods

fn log_error(self, msg: &str) -> Self

Log the error if it is Err, and return self

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

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

Attach context to the error

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> ResultExt<T, E> for Result<T, E>

where E: StdError + 'static,

fn log_error(self, msg: &str) -> Self

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

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

Implementors