out

Provides functionality to get n items from a &mut [T].

This library can provide significant performance increase compared to sorting or converting to a heap when n is relatively small.

N = 100, LEN = 1_000_000, RANGE = 1_000_000:
test binary_heap   ... bench:   6,706,060 ns/iter (+/- 102,080)
test max           ... bench:     846,891 ns/iter (+/- 19,960)
test max_unstable  ... bench:     844,215 ns/iter (+/- 18,365)
test sort          ... bench:  62,280,523 ns/iter (+/- 997,028)
test sort_unstable ... bench:  34,822,256 ns/iter (+/- 3,047,204)

Examples

Add this to Cargo.toml:

[dependencies]
out = "0.5"

And this to main.rs:

extern crate out;

fn main() {
    let mut v = [-5, 4, 1, -3, 2];
    let max = out::max(&mut v, 3);
    assert_eq!(max, [1, 2, 4]);
}

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.