malachite-base 0.4.6

A collection of utilities, including new arithmetic traits and iterators that generate all values of a type
Documentation 
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use itertools::Itertools;
use std::fmt::Debug;

pub fn exhaustive_vecs_helper_helper<T, I: Iterator<Item = Vec<T>>>(xss: I, out: &[&[T]])
where
    T: Clone + Debug + Eq,
{
    let xss = xss.take(20).collect_vec();
    assert_eq!(xss.iter().map(Vec::as_slice).collect_vec().as_slice(), out);
}

pub fn exhaustive_vecs_small_helper_helper<T, I: Clone + Iterator<Item = Vec<T>>>(
    xss: I,
    out_len: usize,
    out: &[&[T]],
) where
    T: Clone + Debug + Eq,
{
    let xss_prefix = xss.clone().take(20).collect_vec();
    assert_eq!(
        xss_prefix
            .iter()
            .map(Vec::as_slice)
            .collect_vec()
            .as_slice(),
        out
    );
    assert_eq!(xss.count(), out_len);
}