1/// Creates a collection [BTreeMap](std::collections::BTreeMap) 2#[macro_export] 3macro_rules! btree_map { 4 () => { ::std::collections::BTreeMap::new() }; 5 ($($tt:tt)*) => { ::std::collections::BTreeMap::from( $crate::macron_map::map!( $($tt)* ) ) }; 6}