Among the other new proposals for C23 that WG14 received are two brilliant gems by Alex Gilding
The first is probably what you’d expect if you know the C++ feature and how it started (I think in C++11), namely a possibility to specify constants for any type (if used to declare an object) or to have simple function calls that can be forced to be evaluated at compile time. There are still some rough edges to cut (storage class, linkage) but basically, if Wg14 weren’t so predictably unpredictable, this should be a homerun.
The other one is on a whole different level, eye opening and very, very promissing. Its main idea is to add annotations to APIs to avoid breaking ABIs and code duplication at the same time.Continue reading “type-safe parametric polymorphism”