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Ken Sims wrote:
...
Barbara can attest that this really means what it say, and that there
is not some sneaky passing-by-referencing actually going on under the
covers. If you don't believe me or the manual, I hope that you will
at least believe her.


I thought I posted something about this yesterday, but I don't see it.

Actually, the system does sometimes do some sneaky passing-by-reference under the covers when it does pass-by-value, but it isn't the same as true pass-by-reference.

Normally, it should be transparent, but due to the way the various compilers handle some data types, some parameters passed by value would be treated by the system as truly by-value, and some would be treated in the sort-of-by-reference way. If you are mixing languages, be sure to specify EXTPROC(*CWIDEN) or *CNOWIDEN or *CL, to ensure that the RPG compiler will handle those data types the same way as the other language. (You can code that EXTPROC whether your RPG programs are calling a procedure written in the language procedure, or whether your RPG procedures are being called by programs in the other language.)



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