Hacker News new | ask | show | jobs
by ubernostrum 3798 days ago
Having type annotations that are ignored at runtime would cause problems when you interact with code without type annotations, no?

I seem to be doing this a lot in this thread, but...

This is your obligatory reminder that several statically-typed languages actually run on dynamic-language runtimes, because programmers don't like to think about the cost of polymorphism/generics, but implementers have to think about that.