Bill Kerr wrote: > Problems: > 1) the final line of the SBECell initialize method: > self turnOff > triggers a MessageNotUnderstood error > doesNotUnderstand: #turnOff
... > turns out that my problem was that I was using an old 3.8 image > > I learnt from the book how to file out and file in - as soon as I tested my > code in the 3.9 image it worked fine! > > A friend sent me some other information from the bugs site pointing out a > bug in SimpleSwitchMorph in earlier versions: > http://bugs.squeak.org/print_bug_page.php?bug_id=3530 > > Summary: 0003530: SimpleSwitchMorph does not actually implement > switch functionality In 2007, many people's introduction to Squeak may be with an image derived from 3.8 (*). So I wonder if the book should not mention this patch prominently at the start of the First Application chapter. By the way, I probably learned a lot about Squeak by wrestling with this for a while this weekend without access to internet or a 3.9 image :) David (*) such as Croquet SDK, OLPC Etoys ... _______________________________________________ Beginners mailing list [email protected] http://lists.squeakfoundation.org/mailman/listinfo/beginners
