On Sunday 21 August 2016 at 21:22:38, Damian wrote: > Am 21.08.2016 um 18:47 schrieb Marc Perkel: > > Actually - you can match an infinite set. And maybe this is what it's > > hard for some people to wrap their head around. > > > > Suppose set A contains 2 items, apples and oranges. > > So we define set B as everything in the universe that is not in set A. > > So set B is an infinite set, everything in the universe EXCEPT apples > > and oranges. > > There is no such set B, as it would contain itself.
In that case try the definition: "B contains all possible email tokens which are not in set A", thus excluding sets themselves from being members of B. Antony. -- This sentence contains exacly three erors. Please reply to the list; please *don't* CC me.