[−][src]Type Definition conquer_once::OnceCell
type OnceCell<T> = OnceCell<T, ParkThread>;
An interior mutability cell type which allows synchronized one-time initialization and read-only access exclusively after initialization.
For the API of this type alias, see the generic
OnceCell
type.
Examples
use conquer_once::OnceCell; #[derive(Copy, Clone)] struct Configuration { mode: i32, threshold: u64, msg: &'static str, } static CONFIG: OnceCell<Configuration> = OnceCell::new(); // producer thread CONFIG.init_once(|| Configuration { mode: 2, threshold: 128, msg: "..." }); // consumer thread let res = CONFIG.get().copied(); if let Some(config) = res { assert_eq!(config.mode, 2); assert_eq!(config.threshold, 128); }