RE: Call or Bound Call

[Joel Fritz <JFritz@xxxxxxxxxxxxxxxx>]

AFAIK, it's a dynamic call and the main difference between using the
prototyped version and not is parameter type checking at compile time when
you use callp() and the prototype.  Not too useful for qcmdexc, but it's
nice for procedures with long lists of arguments.   

> -----Original Message-----
> From: Buzz Fenner [mailto:bfenner@jonesborocwl.org]
> Sent: Tuesday, August 17, 1999 1:51 PM
> To: 'rpg400-l@midrange.com'
> Subject: Call or Bound Call
> 
> 
> Hi all,
> 
> I'm slowly teaching myself ILE RPG (yikes!), rather RPG IV 
> (apology to 
> B.C.).  The following code is a simple call to the command 
> parser.  Here's 
> the old code and the new code:
> 
> 0353.00      C           *IN06     IFEQ '1'
> 0354.00      C                     CALL 'QCAEXEC'
> 0355.00      C                     PARM 'DSPMSG'  CMD     6
> 0356.00      C                     PARM 6         LENGTH 155
> 0357.00      C                     ELSE
> 
> 
> 0059.00 D*
> 0060.00 DRunCmd           pr                  extpgm('QCMDEXC')
> 0061.00 D command                       80a   const
> 0062.00 D length                        15p 5 const
> 0063.00 D*
> 
> bunch of code, etc.
> 
> 0231.00 C*
> 0232.00 C     *in06         ifeq      *on
> 0233.00 C                   callp     RunCmd('DSPMSG':6)
> 0234.00 C                   else
> 
> From a technical viewpoint, are these two chuncks of code 
> equivalent?  Or, 
> is the RPG IV code a bound call of some sort?  The discussion in the 
> reference manual leads me to believe that the RPG IV code 
> represents a 
> dynamic call to QCAEXEC.  Plus, if they are equivalent, what is the 
> advantage of the RPG IV code (if any)?
> 
> 
> Buzz Fenner
> bfennerNS@jonesborocwl.org
> Remove NS to reply
> 
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