alt Hacker NewsNever, you can already do this with RAII, and naturally it would be yet another thing to complain about C++ adding features.
Then again, if someone is willing to push it through WG21 no matter what, maybe.
Never, you can already do this with RAII, and naturally it would be yet another thing to complain about C++ adding features.
Then again, if someone is willing to push it through WG21 no matter what, maybe.
C++ implementations of defer are either really ugly thanks to using lambdas and explicitly named variables which only exist to have scoped object, or they depend on macros which need to have either a long manually namespaced name or you risk stepping on the toes of a library. I had to rename my defer macro from DEFER to MYPOROGRAM_DEFER in a project due to a macro collision.
C++ would be a nicer language with native defer. Working directly with C APIs (which is one of the main reasons to use C++ over Rust or Zig these days) would greatly benefit from it.