macro_rules! btreemap { () => { ... }; ($(||)+) => { ... }; ($($k: expr => $v: expr),+ $(,)*) => { ... }; }
Expand description
macro for BTreeMap
use doe::*;
use std::collections::BTreeMap;
let mut map:BTreeMap<i32,i32> = btreemap!();
map.insert(0, 1);
let map1 = btreemap!(2=>5,3=>4);