Trait FallbackExt 

pub trait FallbackExt<T, E> {
    // Required methods
    fn or_fallback(self, fallback: T) -> Result<T, E>;
    fn or_fallback_with<F: FnOnce() -> T>(self, f: F) -> Result<T, E>;
}

Extension trait for adding fallback behavior to Results.

Required Methods

fn or_fallback(self, fallback: T) -> Result<T, E>

Return a fallback value if this result is an error.

fn or_fallback_with<F: FnOnce() -> T>(self, f: F) -> Result<T, E>

Return a fallback value computed by a function if this result is an error.

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> FallbackExt<T, E> for Result<T, E>

fn or_fallback(self, fallback: T) -> Result<T, E>

fn or_fallback_with<F: FnOnce() -> T>(self, f: F) -> Result<T, E>

Implementors