Trait OptionExt 

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

Extra methods for Option.

Required Methods

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

where 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".

Implementations on Foreign Types

impl<T> OptionExt<T> for Option<T>

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

where F: FnOnce(T) -> U,

Implementors