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  1.  Home
  2. RPG400-L
  3. April 2013

Re: Procedure PR/PI question

Alan


CONST means I will try to keep you from changing it but there are plenty of
ways to change the variable inside the procedure and have the calling
variable to be changed. These include passing as a parameter to a program
inside the procedure, getting a pointer to it, putting in a data structure.
The compiler may try to prevent you from changing but it is easy enough to
change which could result in some really nasty bugs.

I don't know if I'd agree that there are realistically "plenty of ways" to
change it. I've never accidentally changed a CONST parameter, and I'm
always surprised when people do so.

Rory

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