collection_macros

Macro hashset

Source 
macro_rules! hashset {
    ( $($x:expr),* ) => { ... };
    ( $($x:expr,)* ) => { ... };
}
Expand description

Create a HashSet containing the arguments

hashset! allows HashSets to be constructed using minimal syntax:

use std::collections::HashSet;
let m = hashset![
    "a",
    "b",
    "c",
];
assert!(m.contains("a"));
assert!(m.contains("b"));
assert!(m.contains("c"));