Struct rustc_data_structures::snapshot_map::SnapshotMap

pub struct SnapshotMap<K, V> where
    K: Hash + Clone + Eq,  { /* fields omitted */ }

Methods

impl<K, V> SnapshotMap<K, V> where     K: Hash + Clone + Eq,

pub fn new() -> Self

pub fn clear(&mut self)

pub fn insert(&mut self, key: K, value: V) -> bool

pub fn insert_noop(&mut self)

pub fn remove(&mut self, key: K) -> bool

pub fn get(&self, key: &K) -> Option<&V>

pub fn snapshot(&mut self) -> Snapshot

pub fn commit(&mut self, snapshot: Snapshot)

pub fn partial_rollback<F>(     &mut self,     snapshot: &Snapshot,     should_revert_key: &F ) where     F: Fn(&K) -> bool,

pub fn rollback_to(&mut self, snapshot: Snapshot)

Trait Implementations

impl<'k, K, V> Index<&'k K> for SnapshotMap<K, V> where     K: Hash + Clone + Eq,

type Output = V

The returned type after indexing.

Important traits for &'a mut R

impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

fn index(&self, key: &'k K) -> &V

Performs the indexing (container[index]) operation.