Trait StateRepr 

pub trait StateRepr<U>
where
    U: RawState,
{
    type Repr<_V: RawState>;

    // Required methods
    fn get(&self) -> &U;
    fn get_mut(&mut self) -> &mut U;
    fn view(&self) -> Self::Repr<&U>;
    fn view_mut(&mut self) -> Self::Repr<&mut U>;

    // Provided methods
    fn replace(&mut self, value: U) -> U { ... }
    fn set(&mut self, value: U) { ... }
    fn swap(&mut self, other: &mut Self) { ... }
    fn take(&mut self) -> U
       where U: Default { ... }
}

The StateRepr trait defines a common interface for any implemented representations of state.

Required Associated Types

type Repr<_V: RawState>

Required Methods

fn get(&self) -> &U

return a reference to the underlying state

fn get_mut(&mut self) -> &mut U

return a mutable reference to the underlying state

fn view(&self) -> Self::Repr<&U>

returns a view of the representation using a reference to the current value

fn view_mut(&mut self) -> Self::Repr<&mut U>

returns a view of the representation containing a mutable reference to the current value

Provided Methods

fn replace(&mut self, value: U) -> U

replace the inner value with another value, returning the old value

fn set(&mut self, value: U)

update the inner value

fn swap(&mut self, other: &mut Self)

swap the inner value with another value

fn take(&mut self) -> U

where U: Default,

take the inner value, leaving a default value in its place

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.

Implementors

impl<Q> StateRepr<Q> for State<Q>

where Q: RawState,

type Repr<_V: RawState> = State<_V>