Trait OptionExt 

pub trait OptionExt<T> {
    // Required method
    fn map_ref<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>;
}

Required Methods

fn map_ref<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>

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_ref<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>

Implementors