Re: FW: IBM's RPG Strategy (was: Long Procedure Names)

[Tony Carolla <carolla@xxxxxxxxx>]

Interesting.  I wonder what the payback for using this instead of
F-specs is.  I guess, as Bob said, you don't have to know the filename
at compile time, until you actually open the file.  I can do this with
an EXTFILE variable though.

Of course, the file that is named by an EXTFILE variable has to match
the format of the one used at compile time.  But no matter what,
unless we are talking about XML, or some other 'internally described'
file type, you still have to know what format the data is in at
compile time.

Is there a performance boost?  Can you control how many records are
read in each disk I/O request?  This would be useful in programs that
do alot of I/O, but even for that, an override command is still
easier.


On Thu, 24 Mar 2005 12:34:03 -0500, Wilt, Charles <CWilt@xxxxxxxxxxxx> wrote:
> Take a look at the C runtime library functions
> _Rread...
> _Rwrite...
> 
> C prototypes are in recio.h
> 
> HTH,
> 
> Charles Wilt
> iSeries Systems Administrator / Developer
> Mitsubishi Electric Automotive America
> ph: 513-573-4343
> fax: 513-398-1121
> 
> 
> > -----Original Message-----
> > From: rpg400-l-bounces@xxxxxxxxxxxx
> > [mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Tony Carolla
> > Sent: Thursday, March 24, 2005 12:31 PM
> > To: RPG programming on the AS400 / iSeries
> > Subject: Re: FW: IBM's RPG Strategy (was: Long Procedure Names)
> >
> >
> > <snip>
> > > I dont use F
> > > specs anymore, I use the recio function calls instead. So there are
> > > plenty of features that can be left behind.
> > </snip>
> >
> > One can use a 'recio' function rather than declare files?  This is
> > interesting!  I searched the API list, and I don't see any reference
> > to 'recio'.  Where might I find info on this?
> >
> >
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"Enter any 11-digit prime number to continue..."