fast-map

A small library and custom derive to create a map-like struct that uses match expressions to get and insert values.

If you know your keys at compile-time, this library will likely be faster than HashMap for supported map operations.

Provides map operations through strict::MapLike, which returns an error when attempting to use unknown keys, and easy::MapLike, which ignores missing keys and more closely matches the HashMap API.

Usage

```rust use fast_map::easy::MapLike;

fn main() { pub enum A { A, B, C, D };

#[derive(Default, fast_map::FastMap)]
#[fast_map(keys(A::A, A::B, A::C, A::D))]
struct Foo(fast_map::Map4<A, String>);

let mut foo = Foo::default();

foo.insert(A::B, "B".into());

assert_eq!(foo.get(A::B), Some(&"B".to_string()));

assert_eq!(foo.get(A::C), None);

foo.insert(A::C, "C".into());

assert_eq!(foo.values().collect::<Vec<_>>().len(), 2);

} ```

Current version: 0.1.1

License: MIT