Enum FrameMap 

pub enum FrameMap<'a, K, V> {
    Root(HashMap<K, V>),
    Leaf(HashMap<K, V>, &'a FrameMap<'a, K, V>),
}

Variants

Root(HashMap<K, V>)

Leaf(HashMap<K, V>, &'a FrameMap<'a, K, V>)

Implementations

impl<'a, K, V> FrameMap<'a, K, V>

where K: Eq + Hash,

pub fn new() -> Self

Create a new FrameMap.

pub fn last_frame(&mut self) -> &mut HashMap<K, V>

Get the last frame.

pub fn insert(&mut self, k: K, v: V)

Insert a new element into the last frame.

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

Get an element from all frames.

pub fn branch(&'a self) -> Self

Make a branch on the frame map. Modifications on the new branch will not affect the original one. This is useful when implementing scopes.

Trait Implementations

impl<K, V> Default for FrameMap<'_, K, V>

fn default() -> Self

Returns the “default value” for a type.