Struct HandlerMut 

pub struct HandlerMut<'a, U: ?Sized> { /* private fields */ }

A mutable reference to a handler.

Implementations

impl<'a, T: ?Sized> HandlerMut<'a, T>

pub fn map<U: ?Sized, F>(orig: Self, f: F) -> HandlerMut<'a, U>

where F: FnOnce(&mut T) -> &mut U,

Makes a new HandlerMut for a component of the borrowed data.

This is an associated function that needs to be used as HandlerMut::map(...). A method would interfere with methods of the same name on the contents of a handler used through Deref.

Trait Implementations

impl<T> Debug for HandlerMut<'_, T>

where T: Debug + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized> Deref for HandlerMut<'_, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T: ?Sized> DerefMut for HandlerMut<'_, T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T> Display for HandlerMut<'_, T>

where T: Display + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.