My query is not on how to suppress the warning messages but on why the compiler catches only a few of them. Even the case statement example you gave is in my opinion a good candidate for such warning messages because a robust program would have to provide for a default case block, something like: LOOP GOSUB ASSIGN.A BEGIN CASE CASE A = 1; B = 'Apple' CASE A = 2; B = 'Orange' CASE A = 3; B = 'Banana' CASE 1; B = 'Something is very wrong here!' END CASE DISPLAY B REPEAT
Regards, Marco "Stevenson, Charles" <[EMAIL PROTECTED]> wrote: HEAR, HEAR! > Incidentally, I find the worryingly common practice of > setting all variables to zero / null at the top of a program > very annoying as it hides the very useful unassigned variable > trap, leaving you thinking your program works when actually > it doesn't. > > Martin Phillips > Ladybridge Systems Yes, this practice HIDES real errors. I too see it a lot, and I think it is absolutely disgusting. Maybe the practice originated with programmers who were used to working in languages where they had to declare variables & var types at the top of their program. They just felt kinda naked without saying, I=0;A='';[EMAIL PROTECTED], at the top of their basic code. A poor reason. Don't do it. Be aware that the *occasional* such message may hint at a *multitude* of unreported error incidents. Especially when the error is deep inside an important loops. Let me illustrate by expanding Martin's example: LOOP GOSUB ASSIGN.A BEGIN CASE CASE A = 1; B = 'Apple' CASE A = 2; B = 'Orange' CASE A = 3; B = 'Banana' END CASE DISPLAY B REPEAT You will get an "unassigned error" message only if A just happens to not be 1,2,or 3 on the very FIRST pass through the loop. Subsequent passes where that occurs would use the value assigned to B on the previous iteration. UV will be happy to do so. Initializing B at the top of the program, above the loop, would eliminate those occasional error message but not eliminate the buggy code or a fundamental logic flaw. Try to initialize & assign variables exactly where they apply. Then watch for error messages that point out your flaws, and be grateful for them. Chuck Stevenson -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users