range-set-blaze 0.5.0

Integer sets as fast, sorted integer ranges; Maps with integer-range keys; Full set operations
Documentation 
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use itertools::Itertools;
#[allow(unused_imports)]
use range_set_blaze::prelude::*;

fn main() {
    let a = [(1, -1), (-3, 4)];
    let (a0, a1) = a.iter().tee();
    let _c = a0.union(a1);
}