I think you nailed it Mike. I simplified my post a bit. I'm actually testing a parameter to a function not a variable and the call to the function does not pass the parameter. In other words:
put myFunction(p1) into whatever function myFunction p1,p2 if p2 is not zero….. end myFunction This reminds me of the days when "unitialised variable" was the source of many a happy hour of debugging! Hadn't come across the need to initialise variables in LC but this looks like one. Pete lcSQL Software <http://www.lcsql.com> On Tue, Sep 11, 2012 at 10:56 AM, Mike Bonner <bonnm...@gmail.com> wrote: > There are some quirks I found on testing this. > > This evaluates to false > > local tvar > > --put empty into tvar > > put (tvar is not zero) > > > > This evaluates to true > > local tvar > > put empty into tvar > > put (tvar is not zero) > > > So it seems a declared var that has had nothing done to it sees itself as > empty and zero. If you put empty into it, then it is not zero. Cool huh? > > On Tue, Sep 11, 2012 at 11:47 AM, Peter Haworth <p...@lcsql.com> wrote: > > > Just ran across a little oddity. The statement "if tVar is not zero" > > evaluates to false if tVar is empty. Apparently empty and zero are > treated > > the same for comparison purposes? > > Pete > > lcSQL Software <http://www.lcsql.com> > > _______________________________________________ > > use-livecode mailing list > > use-livecode@lists.runrev.com > > Please visit this url to subscribe, unsubscribe and manage your > > subscription preferences: > > http://lists.runrev.com/mailman/listinfo/use-livecode > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
