Re: Missing from RPG/LE

[Hans Boldt <boldt@xxxxxxxxxx>]

mark wrote:
>>Well, there's more to software development than just
>>coding.  Unfortunately, I never got agreement to the
>>need for XOR.  After all, you can use the <> operator
>>to get the same functionality.
>
>That works for one condition, not multiple conditions.

Well, if you consider the binary operator XOR, the
expression:

               (A) <> (B) <> (C)

would have the same result for all values of A, B, and
C as:

               (A) XOR (B) XOR (C)

This expression returns *ON if all 3 operands are *ON,
which is probably not what you want.

I think what you're asking for is a function,
XOR(c1:c2{:c3}...), which would return *ON only if
exactly one of the indicator operands was *ON, and
*OFF otherwise.  You could easily write your own
procedure to do that if it's the kind of thing you
need to do often enough.

Cheers!  Hans

Hans Boldt, ILE RPG Development, IBM Toronto Lab, boldt@ca.ibm.com
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