Rust doesn't allow specialization and likely never will because it's unsound https://www.reddit.com/r/rust/comments/1p346th/specialization_whats_unsound_about_i

Rust doesn't allow specialization and likely never will because it's unsound https://www.reddit.com/r/rust/comments/1p346th/specialization_whats_unsound_about_it/ https://www.reddit.com/r/rust/comments/1p346th/specializatio... has a couple of nice comments about it. But yes it's basically template <typename T, size_t N> class Example { vector<T> generic; }; template<> class Example<int32_t, 32> { int bitpackinhere; }