There has been a lot of discussion about Rust's integral types, and in particular a lot of questions about what type to use for integer fallback and what to call the "pointer-sized" integer type. We (the core team) have been reading these threads and have also done a lot of internal experimentation, and we believe we've come to a final decision on the fate of integers in Rust. The purpose of this post is to clarify that decision and explain our rationale. Integral types. As today, Rust will co...