heap_arr

This is a small #![no_std] crate allowing for construction of arrays directly on the heap.

Provided functions allow for creation of both initialized and uninitialized arrays.

rationale

Currently when someone tries to do Box::new([0_u8; 1_000_000_000]) Rust will create the array on stack and only then move it to the heap. For large arrays this approach will obviously overflow the stack. This is optimized away and the array is created directly on the heap when compiled in release mode but sometimes, for example for testing purposes that require quick recompilations in debug mode this is not an option.