Re: C like Data Structure Definitions?

["John Taylor" <john.taylor@xxxxxxxxxxxxxxx>]

Barbara,

Can you show an example of the syntax used to access a subfield within a
particular structure variable? For example, some languages would use dot
notation as follows:

RNF_Data.NetType = "A"
Data.NetType = "B"

How does it work in the future RPG version?


Regards,

John Taylor
Canada

----- Original Message -----
From: <bmorris@ca.ibm.com>
To: <RPG400-L@midrange.com>
Sent: Wednesday, January 10, 2001 07:29
Subject: Re: C like Data Structure Definitions?


>
> >Date: Tue, 09 Jan 2001 15:28:39 -0800
> >From: Jim Langston <jimlangston@conexfreight.com>
> > ...
> >I am using in a copy source a data structure called RNF_Data.
> >
> >D RNF_Data        DS
> >D  NetType                       1A   Inz( *Loval )
> > ...
> >D  NetNumber                    10U 0 Inz( 0 )
> >D                               95A   Inz( *LoVal )
> >
> >I tried, in my RPG module, to do this, but to no avail:
> >D Data            DS                  Like(RNF_Data)
> >which wouldn't even let me type that in (Like not allowed on DS line)
> >
> >how can I do what I want to do without having to declare this same
> structure
> >twice?  I do not want RNF_Data to be a public variable.  I want to have
2,
> >or more, different structures with the same structure type.  Neither will
> >be visible to the other (one in my module, one in my program).
>
> Jim, what you want will probably be supported in the next release after
> V4R5.  I say "probably" because nothing is certain until it's announced
> yet.  You will probably be able to code something like this:
>
>    D RNF_Data        DS                  Qualified
>    D  NetType                       1A   Inz( *Loval )
>     ...
>    D  NetNumber                    10U 0 Inz( 0 )
>    D                               95A   Inz( *LoVal )
>
>    D Data            DS                  LikeDS(RNF_Data)
>
> Currently, all you can do is create a physical file with the layout you
> want, and use externally-described data structures.
>
> Barbara Morris
>
>
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