Unarray

Utilities for working with uninitialized arrays

This crate provides a few sets of APIs:

uninit_buf and mark_initialized

These are a pair of functions which are generally used as follows:

• stack-allocate an uninitialized array with uninit_buf
• initialize each element
• unsafely convert it to an initialized array with mark_initialized

For example:

use unarray::*;

fn main() {
  let mut buffer = uninit_buf::<i32; 10>();

  for slot in &mut buffer {
    slot.write(123);
  }

  let array = unsafe { mark_initialized(buffer) };

  assert_eq!(array, [123; 10]);
}

This is simple to understand, but still requires unsafe, which is hard to justify in many cases

build_array_*

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.