But isn't Rust basically getting constexpr from C++? I saw that in some recent release notes: https://lobste.rs/s/lng3c0/announcing_rust_1_50_0 https://lobste.

But isn't Rust basically getting constexpr from C++? I saw that in some recent release notes: https://lobste.rs/s/lng3c0/announcing_rust_1_50_0 https://lobste.rs/s/lng3c0/announcing_rust_1_50_0 constexpr is basically making more of C++ available at compile time -- e.g. lots of C++11, 14, 17, and 20 are just allowing more of the language at compile time. Including STL, allocators, etc. Zig simplifies everything by designing in comptime up front, rather than gradually opening it up with ad hoc rules over 10+ years. My understanding is that Rust is going down the same path as C++. So you're going to have 2 kinds of macros AND comptime-like/constexpr-like compile time execution.