pub fn map_ref<T, U>(
v: RwLockReadGuard<'_, RawRwLock, T>,
f: impl FnOnce(&T) -> &U,
) -> MappedRwLockReadGuard<'_, RawRwLock, U>where
U: ?Sized,Expand description
Map a read guard into a sub-type it contains.
pub fn map_ref<T, U>(
v: RwLockReadGuard<'_, RawRwLock, T>,
f: impl FnOnce(&T) -> &U,
) -> MappedRwLockReadGuard<'_, RawRwLock, U>where
U: ?Sized,Map a read guard into a sub-type it contains.