Trait OptionExt

pub trait OptionExt<T> {
    // Required method
    fn map_or_default<U, F>(self, f: F) -> U
       where U: Default,
             F: FnOnce(T) -> U;
}

Extra methods for Option.

Required Methods

fn map_or_default<U, F>(self, f: F) -> U

where U: Default, F: FnOnce(T) -> U,

Maps an Option<T> to U by applying a function to a contained value (if Some) or returns a default (if None).

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> OptionExt<T> for Option<T>

fn map_or_default<U, F>(self, f: F) -> U

where U: Default, F: FnOnce(T) -> U,

Implementors