Struct CallbackCellArgs

pub struct CallbackCellArgs<I, O> { /* private fields */ }

Like an Atomic<Option<Box<dyn FnOnce(I) -> O + Send + 'static>>>.

It’s a normal CallbackCell but with args.

Implementations

impl<I, O> CallbackCellArgs<I, O>

pub fn new() -> Self

Construct with no callback.

pub fn put<F: FnOnce(I) -> O + Send + 'static>(&self, f: F)

Atomically set the callback.

Makes only one heap allocation. Any callback previously present is dropped.

pub fn take_call(&self, input: I) -> Result<O, I>

Atomically take the callback then run it with the given input.

Returns the output if a callback was present. If a callback was not present, returns the original input.

Trait Implementations

impl<I, O> Debug for CallbackCellArgs<I, O>

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

Formats the value using the given formatter.

impl<I, O> Default for CallbackCellArgs<I, O>

fn default() -> Self

Returns the “default value” for a type.

impl<I, O> Drop for CallbackCellArgs<I, O>

fn drop(&mut self)

Executes the destructor for this type.