I do this in c++ quite often with short lambdas auto not_null = [&]{ return (bool)p; }; auto not_space = [&]{ return (*p != ' '); }; if (not_null() && n

I do this in c++ quite often with short lambdas auto not_null = [&]{ return (bool)p; }; auto not_space = [&]{ return (*p != ' '); }; if (not_null() && not_space()) { It's not quite as ergonomic but it works. As an aside. I was curious if the compiler will optimize in the short circuit even if you extract the eagerly evaluated named booleans. However I was pretty sure the rules of c++ are against you and tests show this to be the case But if you simulate the alias keyword with lambdas then the result after optimization are the same https://godbolt.org/z/3cczcnK4s https://godbolt.org/z/3cczcnK4s