Thank you for that explanation, it does make sense, you're right :-) From the reading-and-understanding-code point of view, however, it might have been better to have it the other way round. In everyday language (= everyday logic), a NOT clause is used pretty often, and "failing" (error) is connected to being "false".
There is a dilemma: should code be more elegant or easier to read? When I come back to a piece of code in one of my projects after a long time, I will have to read and understand what I did when creating it. There are pieces which I read just once and know what it's supposed to do. And there are others where I have to read and think about several times to remember what this was all about (even if there are comments). One of these pieces had those .MoveChild clauses, and I had to look into the documentation first to remember that "TRUE" actually means "failed". In another function, I used a Boolean named "wahr" (German for TRUE) as a flag when the previous part of code came to a positive result. This made the IF clauses easy (IF wahr THEN) but somewhat further there is confusion: IF wahr THEN wahr = FALSE ELSE wahr = TRUE END IF ROTFL :-) Now I've got into the same trap I thought when I came back to this site the other day. Regards Rolf Fabien Bodard schrieb: > in fact nothing is unlogical ... it's the gambas way... > > in gambas an error, impossibility, return true... in all the function > that return a boolean > > you can imagine to write this in that way > > CONST bError as Boolean =True > > if .MoveChild = bError then ... > > its the same ! > > in another way it limit the use of the NOT Function keyword > > > > > exemple : > if .MoveChild then > .MoveBack > if .MoveNext > .MoveBack > if .MoveParent then > .MoveNext > endif > endif > Endif > > 2009/4/29 Rolf-Werner Eilert <eilert-sprac...@t-online.de>: >> Just one question for understanding it better: >> >> Why is e. g. MoveNext or MoveChild TRUE in case there is NOTHING and not >> vice-versa? Seems pretty unlogical and looks somewhat strange in code... >> >> Regards >> >> Rolf >> >> ------------------------------------------------------------------------------ >> Register Now & Save for Velocity, the Web Performance & Operations >> Conference from O'Reilly Media. Velocity features a full day of >> expert-led, hands-on workshops and two days of sessions from industry >> leaders in dedicated Performance & Operations tracks. Use code vel09scf >> and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf >> _______________________________________________ >> Gambas-user mailing list >> Gambas-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/gambas-user >> > ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user