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std_macro_extensions/hash_set/
macro.rs

1/// Creates a new `HashSet` instance.
2///
3/// This macro can be used in two forms:
4/// - Without arguments, it creates an empty `HashSet`.
5/// - With elements, it creates a `HashSet` and inserts the provided elements into it.
6#[macro_export]
7macro_rules! hash_set {
8    () => {
9        std::collections::HashSet::new()
10    };
11    ($($elem:expr),*) => {{
12        std::collections::HashSet::from([$($elem),*])
13    }};
14}