Trait MappableDerefMut 

pub trait MappableDerefMut<'a>: DerefMut + SealedMappableDerefMut {
    // Required method
    fn map<U, F>(self, f: F) -> impl MappableDerefMut<'a, Target = U>
       where U: ?Sized + 'a,
             F: FnOnce(&mut Self::Target) -> &mut U;
}

This trait provides compatibility between [&mut T] and parking_lot::RwLockWriteGuard

Required Methods

fn map<U, F>(self, f: F) -> impl MappableDerefMut<'a, Target = U>

where U: ?Sized + 'a, F: FnOnce(&mut Self::Target) -> &mut U,

This method is similar to parking_lot::RwLockWriteGuard::map and its sibling methods.

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<'a, T> MappableDerefMut<'a> for &'a mut T

where T: ?Sized,

fn map<U, F>(self, f: F) -> impl MappableDerefMut<'a, Target = U>

where U: ?Sized + 'a, F: FnOnce(&mut T) -> &mut U,

impl<'a, T> MappableDerefMut<'a> for MappedRwLockWriteGuard<'a, T>

where T: ?Sized + 'a,

fn map<U, F>(self, f: F) -> impl MappableDerefMut<'a, Target = U>

where U: ?Sized + 'a, F: FnOnce(&mut T) -> &mut U,

impl<'a, T> MappableDerefMut<'a> for RwLockWriteGuard<'a, T>

where T: ?Sized + 'a,

fn map<U, F>(self, f: F) -> impl MappableDerefMut<'a, Target = U>

where U: ?Sized + 'a, F: FnOnce(&mut T) -> &mut U,

Implementors