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On 2012-06-17, at 1:00 PM, rpg400-l-request@xxxxxxxxxxxx wrote:
Jon, isn't this what "VALUE" means?
I have long advocated that RPG should have const-and-I-mean-it whereby a copy is _always_ made. Then const would mean what most people already think it means!
No. VALUE parameters are passed by value i.e. copy of the data is made on the stack and accessed by the callee. So the callee does not receive a pointer - they get the actual data.
CONST parameters are normal parms - i.e. a pointer is passed regardless of the size of the parm.
What I'm talking about would result in a regular pointer being passed but it would be to a copy of the data. This is what happens now when a CONST parm requires to be transformed due to data type / size differences.
Jon Paris
www.partner400.com
www.SystemiDeveloper.com
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