Struct RefMut

pub struct RefMut<'b, T: ?Sized + 'b> { /* private fields */ }

Implementations

impl<'b, T: ?Sized> RefMut<'b, T>

pub fn map<U: ?Sized, F>(orig: RefMut<'b, T>, f: F) -> RefMut<'b, U>

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

Makes a new RefMut for a single component of the borrowed data, e.g., an enum variant.

This is an associated function that needs to be used as RefMut::map(...).

pub fn split_tuple<U: ?Sized, V: ?Sized, F>( orig: RefMut<'b, T>, f: F, ) -> (RefMut<'b, U>, RefMut<'b, V>)

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

Splits a RefMut into a tuple of RefMuts for different components of the borrowed data.

Care must be taken to ensure that the resulting Shards refer to non-overlapping components of the parent RefMut.

The underlying RefCell will remain mutably borrowed until both returned RefMuts go out of scope.

This is an associated function that needs to be used a RefMut::split_tuple(...).

pub fn split_triple<U: ?Sized, V: ?Sized, W: ?Sized, F>( orig: RefMut<'b, T>, f: F, ) -> (RefMut<'b, U>, RefMut<'b, V>, RefMut<'b, W>)

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

Splits a RefMut into a triple of RefMuts for different components of the borrowed data.

Care must be taken to ensure that the resulting Shards refer to non-overlapping components of the parent RefMut.

The underlying RefCell will remain mutably borrowed until all three returned RefMuts go out of scope.

This is an associated function that needs to be used a RefMut::split_tuple(...).

Trait Implementations

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

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

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

fn deref_mut(&mut self) -> &mut T

Mutably dereferences the value.

impl<T: ?Sized + Display> Display for RefMut<'_, T>

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

Formats the value using the given formatter.