Macro sugars::cbheap

macro_rules! cbheap {
    ($($tokens: tt)+) => { ... };
}

Build BinaryHeap from collection iterator comprehensions.

Limitations

• Only 3 nested comprehensions

Examples:

use sugars::cbheap;

let w = cbheap![x; x in 1..10];
let z = cbheap![x; x in 1..10, if x%2 == 0];