Crate lazycell

This crate provides a LazyCell struct which acts as a lazily filled Cell.

With a RefCell, the inner contents cannot be borrowed for the lifetime of the entire object, but only of the borrows returned. A LazyCell is a variation on RefCell which allows borrows to be tied to the lifetime of the outer object.

Example

The following example shows a quick example of the basic functionality of LazyCell.

use lazycell::LazyCell;

let lazycell = LazyCell::new();

assert_eq!(lazycell.borrow(), None);
assert!(!lazycell.filled());
lazycell.fill(1).ok();
assert!(lazycell.filled());
assert_eq!(lazycell.borrow(), Some(&1));
assert_eq!(lazycell.into_inner(), Some(1));

AtomicLazyCell is a variant that uses an atomic variable to manage coordination in a thread-safe fashion. The limitation of an AtomicLazyCell is that after it is initialized, it can’t be modified.

Structs

• AtomicLazyCell
  A lazily filled and thread-safe Cell, with frozen contents.
• LazyCell
  A lazily filled Cell, with mutable contents.