Build an array dynamically without heap allocations, deferring errors to a single build callsite.

let arr: [u8; 3] = ArrayBuilder::new()
    .push(1)
    .push(2)
    .push(3)
    .build_exact()
    .unwrap();

assert_eq!(arr, [1, 2, 3]);

You can choose how to handle the wrong number of push calls:

• build_exact.
• build_pad.
• build_truncate.
• build_pad_truncate.

Comparison with other libraries

• [arrayvec] requires you to handle over-provision at each call to try_push.
• array_builder will [panic!] on over-provision.