RE: Passing Parameter as Variable vs as address of variable

Hi Patrick,

If this was the case, why is there the possibility to pass by value at

all?

Just for being able to call functions, procedures, methods written in other
programming languages (C, JAVA ...) where the parameters have to be passed
by value.

Mit freundlichen Grüßen / Best regards

Birgitta Hauser
Modernization ? Education ? Consulting on IBM i

IBM Champion since 2020

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Brown)
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and keeping them!"
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-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Patrik
Schindler
Sent: Saturday, 26 August 2023 23:16
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Passing Parameter as Variable vs as address of variable

Hello Birgitta,

Am 26.08.2023 um 18:33 schrieb Birgitta Hauser <Hauser@xxxxxxxxxxxxxxx>:

If this was the case, why is there the possibility to pass by reference

at all?

A use case for me to "pass by value" is to "write protect" a variable.

By reference is the way it always was!

Yes, you are correct. I should not multitask while doing mails. :-)

The above sentence should read:

If this was the case, why is there the possibility to pass by value at all?

Sorry for the confusion!

... and passing huge variables by value can decrease performance, because

always a duplicate of the data is created and passed.

Yes, this matches my thinking.

:wq! PoC



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