Struct CallbackHolder1 

pub struct CallbackHolder1<A: 'static> { /* private fields */ }

CallbackHolder1 keeps the latest single-argument callback closure alive across recompositions. It mirrors CallbackHolder but supports callbacks that receive one argument.

Implementations

impl<A: 'static> CallbackHolder1<A>

pub fn new() -> Self

Create a new holder with a no-op callback so callers can invoke it immediately.

pub fn update<F>(&self, f: F)

where F: FnMut(A) + 'static,

Replace the stored callback with a new closure provided by the caller.

pub fn clone_rc(&self) -> impl Fn(A) + 'static

Produce a forwarder closure that keeps the holder alive and forwards calls to it.

Trait Implementations

impl<A: Clone + 'static> Clone for CallbackHolder1<A>

fn clone(&self) -> CallbackHolder1<A>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<A: 'static> Default for CallbackHolder1<A>

fn default() -> Self

Returns the “default value” for a type.