On Sun, Nov 15, 2015 at 3:52 AM, Marko Rauhamaa <ma...@pacujo.net> wrote: > What I don't understand is why there is a unary + but no unary /: > > -x ≡ 0 - x > +x ≡ 0 + x > /x ≡ 1 / x > //x ≡ 1 // x > *x ≡ 1 * x > > You could write: > > r = //(//r1 + //r2 + //r3) > > for > > r = 1 // (1//r1 + 1//r2 + 1//r3)
Small problem: Since we have / and // operators, it's impossible to have a unary / operator: 1 // x 1 / (/x) But leaving that aside, the number of times you'd want this are far fewer than the times you want unary minus. > Actually, the real question is, is the unary - *really* so useful that > it merits existence or is it just something that was mindlessly copied > into programming languages from elementary school arithmetics? More likely, copied from C. But that's why I made my other post. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
