Struct Stateful

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

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

Trait Implementations

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

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

Returns a copy of the value.

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

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

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