You only have "generic" functionality for built in types though. Arrays. (In a certain way maps and channels). That's fine if you only use those, but it makes

You only have "generic" functionality for built in types though. Arrays. (In a certain way maps and channels). That's fine if you only use those, but it makes it impossible to write generic functions for much else. See my comment about lack of libraries. I did miss them a lot. Not when writing your one off app or program, but for libraries. And you end up having to implement a lot yourself that's for free in other languages.