Trait DuplicateInsertsFirstWinsMap 

pub trait DuplicateInsertsFirstWinsMap<K, V> {
    // Required methods
    fn new(size_hint: Option<usize>) -> Self;
    fn insert(&mut self, key: K, value: V);
}

Required Methods

fn new(size_hint: Option<usize>) -> Self

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

Insert the value into the map, if there is not already an existing 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.

Implementors

impl<K, V> DuplicateInsertsFirstWinsMap<K, V> for BTreeMap<K, V>

where K: Ord,

impl<K, V, S> DuplicateInsertsFirstWinsMap<K, V> for HashMap<K, V, S>

where K: Eq + Hash, S: BuildHasher + Default,

Available on crate feature std only.