Alain, Very good idea. A Set it's much better than an OrderedCollection. Already changed that. Now when the solution is in both cases 0, it returns only (0) and not (0 0). And also intuitively I agree with you that the solutions of an equation are a set. Thanks! Nacho
----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Question-on-style-tp4752165p4752386.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.