Struct once_cell::sync::OnceCell [−][src]
pub struct OnceCell<T> { /* fields omitted */ }Methods
impl<T> OnceCell<T>[src]
impl<T> OnceCell<T>pub const INIT: OnceCell<T>
INIT: OnceCell<T> = OnceCell{inner: <AtomicPtr>::new(ptr::null_mut()), once: <Once>::new(),}
pub fn new() -> OnceCell<T>[src]
pub fn new() -> OnceCell<T>pub fn get(&self) -> Option<&T>[src]
pub fn get(&self) -> Option<&T>pub fn set(&'static self, value: T) -> Result<(), T>[src]
pub fn set(&'static self, value: T) -> Result<(), T>pub fn get_or_init(
&'static self,
f: impl FnOnce() -> T
) -> &T[src]
pub fn get_or_init(
&'static self,
f: impl FnOnce() -> T
) -> &TGuarantees that only one f is ever called.