On Mon, Feb 23, 2015 at 8:25 AM, Marko Rauhamaa <marko at pacujo.net> wrote: > This is a true statement: > > If X is Y, then id(X) == id(Y). > > However, this is generally not a true statement: > > If X is Y, then id(X) is id(Y). Irrelevant, because the identities of equal integers didn't come into this. ChrisA