Trait ResultExt 

pub trait ResultExt<T>: Sealed {
    // Required methods
    fn with_kind(self, kind: ErrorKind) -> Result<T, Error>
       where Self: Sized;
    fn with_context<C>(self, kind: ErrorKind, message: C) -> Result<T, Error>
       where Self: Sized,
             C: Into<Cow<'static, str>>;
    fn with_context_fn<F, C>(self, kind: ErrorKind, f: F) -> Result<T, Error>
       where Self: Sized,
             F: FnOnce() -> C,
             C: Into<Cow<'static, str>>;
}

An extension to the Result type that easy allows creating Error values from existing errors.

This trait cannot be implemented on custom types and is meant for usage with Result.

Required Methods

fn with_kind(self, kind: ErrorKind) -> Result<T, Error>

where Self: Sized,

Creates a new error with the specified ErrorKind.

fn with_context<C>(self, kind: ErrorKind, message: C) -> Result<T, Error>

where Self: Sized, C: Into<Cow<'static, str>>,

Creates a new error with the specified ErrorKind and an additional message.

fn with_context_fn<F, C>(self, kind: ErrorKind, f: F) -> Result<T, Error>

where Self: Sized, F: FnOnce() -> C, C: Into<Cow<'static, str>>,

Creates a new error with the specified ErrorKind and a function that returns an additional message.

Implementations on Foreign Types

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

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

fn with_kind(self, kind: ErrorKind) -> Result<T, Error>

where Result<T, E>: Sized,

fn with_context<C>(self, kind: ErrorKind, message: C) -> Result<T, Error>

where Result<T, E>: Sized, C: Into<Cow<'static, str>>,

fn with_context_fn<F, C>(self, kind: ErrorKind, f: F) -> Result<T, Error>

where Result<T, E>: Sized, F: FnOnce() -> C, C: Into<Cow<'static, str>>,

Implementors