Trait InsertAndIncrement

pub trait InsertAndIncrement<K, V>: Default {
    // Required method
    fn insert_and_increment(&mut self, key: K, value: V);
}

A trait for mapping types to serve as a trivial wrapper over the Entry interface

Required Methods

fn insert_and_increment(&mut self, key: K, value: V)

Creates collection with the given key if necessary and increments its total by the given value

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<K, V> InsertAndIncrement<K, V> for BTreeMap<K, V>

where K: Ord, V: AddAssign,

fn insert_and_increment(&mut self, key: K, value: V)

impl<K, V, H> InsertAndIncrement<K, V> for HashMap<K, V, H>

where K: Eq + Hash, V: AddAssign, H: BuildHasher + Default,

fn insert_and_increment(&mut self, key: K, value: V)

Implementors