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I think you're talking about overloading not polymorphism.
-----Original Message-----
From: Alan Campin [mailto:alan0307d@xxxxxxxxx]
Sent: Wednesday, January 24, 2018 1:39 PM
To: RPG programming on the IBM i (AS/400 and iSeries) <rpg400-l@xxxxxxxxxxxx>
Subject: Re: prototype with different type
What you are talking about is polymorphism. You write a routine for each type and the compiler figures out which procedure to call based on the type of parameter but RPG does not do polymorphism or at least I have never heard of it.
The only way I could think of doing it to always pass as a string and classify in the procedure.
A question. Why are you passing parameters as fixed length field?
dcl-proc writeb;
dcl-pi *N;
InDesc VarChar(50) Options(*Trim) Value;
In Val VarChar(250) Options(*Trim) Value;
end-pi;
Why process the entire field when you might only be using a few characters of the string?
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