Re: How to create my own built-in functions

["James W. Kilgore" <qappdsn@xxxxxxxxxxxxx>]

Scott,

Just a question, not a critique ....

IBM uses return values and return reasons.  How much different code would be
required for a boolean return value and of not x,  investigate the reason code?

My purpose in asking is that I am working on some procedures that will result in
a return code (0/1 no/yes not/successful fail/pass) that I want to have the
boolean response evoke the process of a 4 char reason code that just
coincidentally becomes the 4 digits of the message identifier to display to the
user.

IMHO, a boolean response is a simple branch.  One value, one if/or.  I 
understand
your test IFLE/ELSE is a single test, but you've embedded reason within 
response.
It appears that you've applied dual usage to a single value.

Is there some restriction that you are operating under that prevents dual
feedback?


Scott Klement wrote:

> I personally like to use integers as return codes.   Sure, if your goal is
> specifically to return a boolean value, an indicator would be better.
> For example something like IsDataValid()  would be better returning a
> boolean value...
>
> But with an integer you can return a lot of different things.  Lets say
> for example, you're doing a  "RtvOrder()"  subprocedure.   You might have
> a return value of "1" to mean it found the order, "0" that it couldn't
> find the order (Which isnt necessarily an error) or "-1" to indicate that
> that there was some sort of error.  (file not found, file damaged, etc)

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