Struct fltk::utils::oncelock::OnceCell

pub struct OnceCell<T> { /* private fields */ }

A thread-safe write-once cell

Implementations

impl<T> OnceCell<T>

pub const fn new() -> Self

Create a new OnceCell

pub fn get_or_init<F>(&self, f: F) -> &Twhere F: FnOnce() -> T,

Get or initialize the OnceCell

pub fn get(&self) -> Option<&T>

Get the optional value of a OnceCell

pub fn get_mut(&mut self) -> Option<&mut T>

Get a mutable optional value of the OnceCell

pub fn set(&self, value: T) -> Result<(), T>

Set the value of the OnceCell

Trait Implementations

impl<T: Send> Send for OnceCell<T>

impl<T: Sync + Send> Sync for OnceCell<T>