Struct rwlock2::RwLockReadGuard
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#[must_use] pub struct RwLockReadGuard<'a, T: ?Sized + 'a> { // some fields omitted }
RAII structure used to release the shared read access of a lock when dropped.
Methods
impl<'rwlock, T: ?Sized> RwLockReadGuard<'rwlock, T>
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fn map<U: ?Sized, F>(self, cb: F) -> RwLockReadGuard<'rwlock, U> where F: FnOnce(&'rwlock T) -> &'rwlock U
Transform this guard to hold a sub-borrow of the original data.
Applies the supplied closure to the data, returning a new lock guard referencing the borrow returned by the closure.
let x = RwLock::new(vec![1, 2]); let y = x.read().unwrap().map(|v| &v[0]); assert_eq!(*y, 1);
Trait Implementations
impl<'rwlock, T: ?Sized> Deref for RwLockReadGuard<'rwlock, T>
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type Target = T
The resulting type after dereferencing
fn deref(&self) -> &T
The method called to dereference a value