Re: Not valid? Dow (p = %scan( '~' : SPdetl : PosLastDelim + 1)) > 0;

That's why i always use "const" and 'value' keywords if parameter must not
be changed in**subprocs.
**
Regards, Alex.
.
**
11.09.2015, 19:03, "Jon Paris" <jon.paris@xxxxxxxxxxxxxx>:

That***s cheating John <grin> - I absolutely agree that it is
***fighting*** the language.

To me one of the most valuable points of using subprocs is that I should
be able to rely on the fact that only the receiver changes and not any
of the parms. If you can***t be sure of that then a subproc has the same
problems as a subroutine i.e. you have to go look at the code before you
can be sure what it does.

By the way - I was not commenting on Chris*** option (should have made
that clear) but I never received the original post so I commented on
what I saw.

On Sep 11, 2015, at 11:31 AM, John Yeung <[1]gallium.arsenide@xxxxxxxxx>
wrote:

**On Fri, Sep 11, 2015 at 11:19 AM, Jon Paris
<[2]jon.paris@xxxxxxxxxxxxxx> wrote:

**The simple version of the code would be:

**Dow %scan( '~' : SPdetl : PosLastDelim + 1) > 0;

**But of course that would not give you access to the current value.
If you need p then it has to be two separate operations - RPG cannot
combine an assignment with a condition as you can do in some other
languages.

**You absolutely can in RPG: you just have to define a procedure that
**both returns a value AND modifies its parameters. That was the whole
**point of Chris's suggestion.

**Personally, I think this is not a good use of procedures (the
**avoidance of one line of idiomatic RPG code). Even if you use this
**kind of loop all over the place (so that you achieve a net savings
in
**lines of code), to me this amounts to fighting the language.

**John Y.
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