macro_rules! btree_set { {$($v: expr),* $(,)?} => { ... }; }
Macro for creating a BTreeSet.
BTreeSet
Syntactic sugar for BTreeSet::from.
BTreeSet::from
use map_macro::btree_set; let x = btree_set! { 1, 2, 3, 3, 4 }; assert_eq!(x.len(), 4);