Trait FallibleCallback 

pub trait FallibleCallback<T, R = ()> {
    type Error;

    // Required method
    fn call(arg: &T) -> Result<R, Self::Error>;
}

Represents callback action for cases (&T) -> Result<R, E>, where R is () by default and E is associated type Error.

Required Associated Types

type Error

Returning error in callback’s Err case.

Required Methods

fn call(arg: &T) -> Result<R, Self::Error>

Triggers the callback’s logic.

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.

Implementors