Crate lazy_init [−] [src]

A crate for things that are 1) Lazily initialized 2) Expensive to create 3) Immutable after creation 4) Used on multiple threads

Lazy<T> is better than Mutex<Option<T>> because after creation accessing T does not require any locking, just a single boolean load with Ordering::Acquire (which on x86 is just a compiler barrier, not an actual memory barrier).

Structs

Lazy	`Lazy<T>` is a lazily initialized synchronized holder type. You can think of it as a `LazyTransform` where the initial type doesn't exist.
LazyTransform	`LazyTransform<T, U>` is a synchronized holder type, that holds a value of type T until it is lazily converted into a value of type U.