Trait Map1Plus 

pub trait Map1Plus<BypassOrphanRule, K, V> {
    // Required methods
    fn from_1(key: K, value: V, capacity: usize) -> Self;
    fn insert(&mut self, key: K, value: V) -> Option<V>;
}

Map that can have 1 or more elements. Unlocks: map! { a => b }

Required Methods

fn from_1(key: K, value: V, capacity: usize) -> Self

Create a map with the first key => value pair and the specified capacity

Not all sequences support capacity, so it may be ignored

fn insert(&mut self, key: K, value: V) -> Option<V>

Insert a key => value pair into the map

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: Ord, V> Map1Plus<(), K, V> for BTreeMap<K, V>

fn from_1(first_key: K, first_value: V, _capacity: usize) -> Self

fn insert(&mut self, key: K, value: V) -> Option<V>

impl<K: Hash + Eq, V, S: Default + BuildHasher> Map1Plus<(), K, V> for HashMap<K, V, S>

fn from_1(first_key: K, first_value: V, capacity: usize) -> Self

fn insert(&mut self, key: K, value: V) -> Option<V>

Implementors