Rust macro for creating hashmaps using js object syntax

map.rs

macro_rules! map {
    ($($v: literal => $s: expr),*) => {{
            let mut h = HashMap::new();
            $(
                h.insert($v,$s);
            )*
            h
    }}
}

fn main() {
    
    // Created HashMap using simple object syntax
    let v = map! {
        "loop" => 300,
        "meow" => 200,
        "keow" => 100
    };

    let s = v.get("loop");
}