Trait wurm::prelude::ResultExt

pub trait ResultExt<T, E: Error>: Result<T, E> {
    fn or_warn<D: From<E> + Error>(self, warn: &mut impl Warn<D>) -> Option<T>;
    fn or_warn_map<D: Error>(
        self,
        func: impl FnOnce(E) -> D,
        warn: &mut impl Warn<D>
    ) -> Option<T>;
}

Integration between Result and Warn

Note that this trait is sealed, so it is implemented for Result<T, E> and cannot be implemented for anything else.

Required Methods

fn or_warn<D: From<E> + Error>(self, warn: &mut impl Warn<D>) -> Option<T>

Pass the error from result to the sink

If the result contains a value, then this value is returned. Otherwise, the error is passed to warn, and None is returned. The error also can be converted to a corresponding type via From trait before passing into warn.

fn or_warn_map<D: Error>(
    self,
    func: impl FnOnce(E) -> D,
    warn: &mut impl Warn<D>
) -> Option<T>

Same as ResultExt::or_warn(), but func is applied to error before passing into warn

Implementations on Foreign Types

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

fn or_warn<D: From<E> + Error>(self, warn: &mut impl Warn<D>) -> Option<T>

fn or_warn_map<D: Error>(
    self,
    func: impl FnOnce(E) -> D,
    warn: &mut impl Warn<D>
) -> Option<T>

Implementors