I'm kinda out of my depth here, as I know next to nothing about C++, but I'm pretty sure it's not. These functors are fundamentally different thing (first-class

I'm kinda out of my depth here, as I know next to nothing about C++, but I'm pretty sure it's not. These functors are fundamentally different thing (first-class function object?) from what that other article and what Haskell calls functors (container that can be mapped over).