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 malachite_base::iterators::is_unique;
use malachite_base::strings::{string_is_subset, string_unique};
use malachite_base::test_util::generators::common::GenConfig;
use malachite_base::test_util::generators::string_gen;

#[test]
fn test_string_unique() {
    let test = |s, out| {
        assert_eq!(string_unique(s), out);
    };
    test("", "");
    test("x", "x");
    test("xxxxxxxxx", "x");
    test("Hello, world!", "Helo, wrd!");
    test("Mississippi", "Misp");
    test(
        "A quick brown fox jumps over the lazy dog",
        "A quickbrownfxjmpsvethlazydg",
    );
}

#[test]
fn string_unique_properties() {
    let mut config = GenConfig::new();
    config.insert("mean_length_n", 128);
    config.insert("mean_length_d", 1);
    string_gen().test_properties_with_config(&config, |s| {
        let t = string_unique(&s);
        assert!(is_unique(t.chars()));
        assert!(t.len() <= s.len());
        assert_eq!(string_unique(&t), t);
        assert!(string_is_subset(&s, &t));
        assert!(string_is_subset(&t, &s));
    });
}