btmap

batch_oper

Macro btmap 

Source 
macro_rules! btmap {
    { } => { ... };
    { $($k:expr => $v:expr),* $(,)? } => { ... };
}
Expand description

new a BTreeMap<K, V>

btmap! {
    ka => va,
    kb => vb,
}

equivalent to

{
    let mut m = BTreeMap::new();
    m.insert(ka, va);
    m.insert(kb, vb);
    m
}