Trait MapLike 

pub trait MapLike: Sized {
    // Required methods
    fn new() -> Self;
    fn get(&self, key: &u64) -> Option<&(NanValue, NanValue)>;
    fn insert(&self, key: u64, value: (NanValue, NanValue)) -> Self;
    fn rewrite_values_mut(&mut self, f: impl FnMut(&mut (NanValue, NanValue)));
    fn len(&self) -> usize;
    fn iter(&self) -> impl Iterator<Item = (&u64, &(NanValue, NanValue))>;
    fn values(&self) -> impl Iterator<Item = &(NanValue, NanValue)>;

    // Provided methods
    fn insert_owned(self, key: u64, value: (NanValue, NanValue)) -> Self { ... }
    fn is_empty(&self) -> bool { ... }
}

Trait abstracting the persistent-map operations needed by the arena.

Implementors provide a hash-keyed map from u64 to (NanValue, NanValue).

Required Methods

fn new() -> Self

fn get(&self, key: &u64) -> Option<&(NanValue, NanValue)>

fn insert(&self, key: u64, value: (NanValue, NanValue)) -> Self

fn rewrite_values_mut(&mut self, f: impl FnMut(&mut (NanValue, NanValue)))

Rewrite NanValue pairs in place — avoids rebuilding the hash table. Uses copy-on-write: O(1) when sole owner, O(n) clone when shared.

fn len(&self) -> usize

fn iter(&self) -> impl Iterator<Item = (&u64, &(NanValue, NanValue))>

fn values(&self) -> impl Iterator<Item = &(NanValue, NanValue)>

Provided Methods

fn insert_owned(self, key: u64, value: (NanValue, NanValue)) -> Self

Insert with owned self — avoids clone when sole owner.

fn is_empty(&self) -> bool

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl MapLike for AverMap<u64, (NanValue, NanValue)>

Available on crate feature runtime only.

fn new() -> AverMap<u64, (NanValue, NanValue)>

fn get(&self, key: &u64) -> Option<&(NanValue, NanValue)>

fn insert( &self, key: u64, value: (NanValue, NanValue), ) -> AverMap<u64, (NanValue, NanValue)>

fn insert_owned( self, key: u64, value: (NanValue, NanValue), ) -> AverMap<u64, (NanValue, NanValue)>

fn rewrite_values_mut(&mut self, f: impl FnMut(&mut (NanValue, NanValue)))

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn iter(&self) -> impl Iterator<Item = (&u64, &(NanValue, NanValue))>

fn values(&self) -> impl Iterator<Item = &(NanValue, NanValue)>

Implementors