transvec is a crate for transmuting Vecs without copying.
Add this to your Cargo.toml:
toml
[dependencies]
transvec = "0.1.0"
rust
use transvec::transmute_vec;
let input: Vec<u8> = vec![1, 2, 3, 4];
let output: Vec<u16, _> = transmute_vec(input).unwrap();
This is nightly because it's blocked on the allocator_api, which is how this crate can get around the aligment issue.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.