Name Description Size
lib.rs Scoped thread-local storage This module provides the ability to generate *scoped* thread-local variables. In this sense, scoped indicates that thread local storage actually stores a reference to a value, and this reference is only placed in storage for a scoped amount of time. There are no restrictions on what types can be placed into a scoped variable, but all scoped variables are initialized to the equivalent of null. Scoped thread local storage is useful when a value is present for a known period of time and it is not required to relinquish ownership of the contents. # Examples ``` #[macro_use] extern crate scoped_tls; scoped_thread_local!(static FOO: u32); # fn main() { // Initially each scoped slot is empty. assert!(!FOO.is_set()); // When inserting a value, the value is only in place for the duration // of the closure specified. FOO.set(&1, || { FOO.with(|slot| { assert_eq!(*slot, 1); }); }); # } ``` 7273