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Achhh. It's been almost 30 years since high school geometry.

Thanks,

Mark

Mark D. Walter
Senior Programmer/Analyst
CCX, Inc.
mwalter@xxxxxxxxxx
http://www.ccxinc.com


                                                                           
             "Bob Cozzi"                                                   
             <cozzi@xxxxxxxxx>                                             
             Sent by:                                                   To 
             rpg400-l-bounces@         "'RPG programming on the AS400 /    
             midrange.com              iSeries'" <rpg400-l@xxxxxxxxxxxx>   
                                                                        cc 
                                                                           
             02/01/2005 04:03                                      Subject 
             PM                        RE: RPG read loops                  
                                                                           
                                                                           
             Please respond to                                             
              RPG programming                                              
              on the AS400 /                                               
                  iSeries                                                  
             <rpg400-l@midrang                                             
                  e.com>                                                   
                                                                           
                                                                           




Three lines go into and out of each dot.
Curved, straight, whatever.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of rick baird
Sent: Tuesday, February 01, 2005 2:57 PM
To: RPG programming on the AS400 / iSeries
Subject: Re: RPG read loops

a strait line?   one line?


On Tue, 1 Feb 2005 14:39:06 -0600, Bob Cozzi <cozzi@xxxxxxxxx> wrote:
> Yes there is a better way...
> I will only tell you the answer, however, after you send me a diagram
> illustrating how, in the figure below, to connect the top row of 3 dots
with
> the bottom row of 3 dots using a line drawn with a pen or pencil WITHOUT
> ever allowing any of the lines to intersect. This has to be accomplished
on
> a two-dimensional surface. You have ten minutes... Go!
>
>   *          *          *
>
>   *          *          *
>
>
> -Bob Cozzi
>
>
> -----Original Message-----
> From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]
> On Behalf Of Paul Morgan
> Sent: Tuesday, February 01, 2005 2:27 PM
> To: rpg400-l@xxxxxxxxxxxx
> Subject: RPG read loops
>
> Almost all of the code in the current Leave / Iter thread showed a loop
> like:
>
> DoU F3 or F12
>    exfmt
>    If Not (F3 or F12)
>       //  do something
>    EndIf
> EndDo
>
> This only has one exfmt statement inside a DoU loop.  A similar file read
> loop would be:
>
> DoU %EoF
>    Read
>    If Not %Eof
>       // do something
>    EndIf
> EndDo
>
> which has one read statement indhiside of a DoU loop.  Isn't there a
better way
> of coding loops with more than one read/exfmt like:
>
> exfmt
> DoW Not (F3 or F12)
>    //  do something
>    exfmt
> EndDo
>
> or
>
> Read
> DoW Not %Eof
>    // do something
>    Read
> EndDo
>
> or
>
> SetLL
> ReadE
> DoW Not %Eof
>    // do something
>    ReadE
> EndDo
>
> Most programmers seem to code with the single read/exfmt style which IMHO
> complicates the code.  In a DoU/Read loop the body of the loop is nested
two
> deep inside the DoU and an If statement.  In a Read/DoW/Read loop the
body
> of the loop is nested one deep inside a DoW.  Doesn't this reduction in
the
> nesting of the body of the loop improve the program?  Readability is
> improved.  Performance is also improved (although minor) with the removal
of
> one test against the end of loop.
>
> Other programmers I work with are adamant about not coding more than one
> read statement.  Why is coding more than one read statement such a
problem?
>
> Paul
>
> --
> Paul Morgan
> Senior Programmer Analyst - Retail
> J. Jill Group
> 100 Birch Pond Drive, PO Box 2009
> Tilton, NH 03276-2009
> Phone: (603) 266-2117
> Fax:   (603) 266-2333
>
> --
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