Function git_features::threading::map_upgradable_ref[−][src]

pub fn map_upgradable_ref<T, U: ?Sized>(
    v: RwLockUpgradableReadGuard<'_, T>, 
    f: impl FnOnce(&T) -> &U
) -> MappedRefGuard<'_, U>

Expand description

Map an upgradable read guard into a sub-type it contains.