The problem isn't that C++ can't do "defer"... the problem is that C++ can do everything, and all those "everythings" are constantly interacting because code ba

The problem isn't that C++ can't do "defer"... the problem is that C++ can do everything, and all those "everythings" are constantly interacting because code bases will use all that "everything" fairly routinely. Just glancing at a particular defer implementation won't tell you how it interacts with everything else, let alone how it will interact with whatever strange things your own codebase has. Go's defer function is very predictable, not so much because Go's defer is magic but precisely because it isn't. There aren't a ton of features for it to interact with. This also isn't a special virtue of Go; IMHO it's a special (not unique, but unusual) failing of C++. It was insanely complicated already in the 90s and every standard since then has only made it worse.