Thought of the look decision, see Precisely what is the benefit of possessing this/self pointer required specific?. In this case I would like to be able to return two aspects (a tuple?) during the iterator. It is still not obvious ways to implement these an iterator (despite the quite a https://dallasbthvj.blogoxo.com/37793044/the-fact-about-self-adhesive-mini-trunking-that-no-one-is-suggesting