[jeremyjh]

I think he just means the move constructor is not guaranteed to move anything. It is only expected to.

[snuxoll]

The rule of three/five is probably the most tedious thing to deal with in modern C++. Assuming all your member variables are C++ types it's not TERRIBLE, you should be able to handle everything in the initialization list (using std::move for the move constructor) - but it's still easy to forget to initialize a member.

This is one area where Rust really makes life much easier.

[Too]

Use rule of zero as far as possible. All the tedious stuff that comes with rule of five should be isolated to very few components in your code.