pub fn idle_add_once<F>(func: F) -> SourceId
Expand description
Adds a closure to be called by the default main loop when it’s idle.
func
will be called repeatedly until it returns ControlFlow::Break
.
The default main loop almost always is the main loop of the main thread. Thus, the closure is called on the main thread.
In comparison to idle_add()
, this only requires func
to be
FnOnce
, and will automatically return ControlFlow::Break
.