Struct Stateful

Source

#[repr(transparent)]
pub struct Stateful<F>(pub F);

Expand description

A marker type that indicates that an extractor’s first parameter accepts handler state.

When using state, the type of the state must be fully qualified and cannot be inferred. For more complex state types, consider using a type definition.

§Examples

This type must be used to interact with handler state within an extractor. The following constructs an event handler that runs and matches when a management frame can be extracted from an event and has exclusive access to state when it runs.

let mut handler = event::extract(Stateful(|state: &mut State, frame: Buffered<MgmtFrame>| {
    /* ... */
}));

Tuple Fields§

§0: F

Struct StatefulCopy item path

§Examples

Tuple Fields§

Trait Implementations§

impl<F: Clone> Clone for Stateful<F>

fn clone(&self) -> Stateful<F>

fn clone_from(&mut self, source: &Self)

impl<F: Debug> Debug for Stateful<F>

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

impl<F: Copy> Copy for Stateful<F>

Auto Trait Implementations§

impl<F> Freeze for Stateful<F>where F: Freeze,

impl<F> RefUnwindSafe for Stateful<F>where F: RefUnwindSafe,

impl<F> Send for Stateful<F>where F: Send,

impl<F> Sync for Stateful<F>where F: Sync,

impl<F> Unpin for Stateful<F>where F: Unpin,

impl<F> UnwindSafe for Stateful<F>where F: UnwindSafe,

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut T)

impl<T, D> Encode<Ambiguous1, D> for Twhere D: ResourceDialect,

unsafe fn encode( self, _encoder: &mut Encoder<'_, D>, _offset: usize, _depth: Depth, ) -> Result<(), Error>

impl<T, D> Encode<Ambiguous2, D> for Twhere D: ResourceDialect,

unsafe fn encode( self, _encoder: &mut Encoder<'_, D>, _offset: usize, _depth: Depth, ) -> Result<(), Error>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IntoAny for Twhere T: 'static + Send + Sync,

fn into_any(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

impl<T> OptionalField for Twhere T: ?Sized,

const PRESENT: Presence<Self> = _

const ABSENT: Presence<Self> = _

impl<T> Pointable for T

const ALIGN: usize = _

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same for T

type Output = T

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

fn vzip(self) -> V

impl<St> WithTag for St

fn tagged<T>(self, tag: T) -> Tagged<T, St>

Struct Stateful

impl<F> Freeze for Stateful<F>
where F: Freeze,

impl<F> RefUnwindSafe for Stateful<F>
where F: RefUnwindSafe,

impl<F> Send for Stateful<F>
where F: Send,

impl<F> Sync for Stateful<F>
where F: Sync,

impl<F> Unpin for Stateful<F>
where F: Unpin,

impl<F> UnwindSafe for Stateful<F>
where F: UnwindSafe,

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<T, D> Encode<Ambiguous1, D> for T
where D: ResourceDialect,

impl<T, D> Encode<Ambiguous2, D> for T
where D: ResourceDialect,

impl<T, U> Into<U> for T
where U: From<T>,

impl<T> IntoAny for T
where T: 'static + Send + Sync,

impl<T> OptionalField for T
where T: ?Sized,

impl<T> ToOwned for T
where T: Clone,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

impl<V, T> VZip<V> for T
where V: MultiLane<T>,