Struct rustc_data_structures::snapshot_map::SnapshotMap

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Methods

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

pub fn new() -> Self

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

pub fn snapshot(&mut self) -> Snapshot

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

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 I

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.