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macro_rules! hashmap { ( $($k:expr => $v:expr,)* ) => { { #[allow(unused_mut)] let mut h = hashbrown::HashMap::new(); $( h.insert($k, $v); )* h } }; ( $($k:expr => $v:expr),* ) => { hashmap![$( $k => $v, )*] }; } pub(crate) use hashmap;