The thing is, you can trivially implement a form of defer with RAII. Where I work we have a decades old C++ macro called ON_BLOCK_EXIT that people use to clean

The thing is, you can trivially implement a form of defer with RAII. Where I work we have a decades old C++ macro called ON_BLOCK_EXIT that people use to clean up C-style things that don't have a destructor. Today it's much better with C++ having lambdas. It won't be "function-scoped" like Go, but (IMO) that's fairly useless feature if you have destructors anyways (you could just collect everything in a vector at function-scope, if you really want that behavior).