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Perfor using and Changing Concept

Former Member

‎2011 Oct 10 1:54 PM

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440

Hello Guys,

Can anybody describe in detail about PERFORM USING and CHANGING concepts. because i am using multiple times the perform statememnt for a same fuctionality so i want to use the single PERFORM statement for multiple number of times.

Moderator Message: Basic question please read the F1 documentation.

Edited by: Suhas Saha on Oct 10, 2011 6:55 PM

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Former Member

‎2011 Oct 10 1:58 PM

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414

place your cursor over PERFORM and hit F1.

Or search the forum. I suspect anyone will take his time to write an essays according to this here.

technically there is no difference as far as ai know of, thos you shouldnt change data that you got via USING.

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PeterJonker
Active Contributor

‎2011 Oct 10 2:23 PM

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With PERFORM using the parameters shoudl not be changed in the subroutine. With PERFORM changing you can change the parameters in your subroutine.

Therefore use changing if in any of your calls the parameters are changed.