The description is clearly a joke, although they are real operators (or strange uses of other operators). For example, -=- is subtraction assignment operator an

The description is clearly a joke, although they are real operators (or strange uses of other operators). For example, -=- is subtraction assignment operator and negative operator together, which results in addition. However, the description of +-0-+ is wrong; it subtracts and does not add (this is what I thought, so I tried it to see and I am right and the article there is wrong).