Just about every vendor that I've seen implement this has done it slightly
different. This is how you do it in mvbase - from my "How To" folder:
If you have the manual for your version, start looking through the section
on Dictionary types!
How to write basic subr DICT items in MvBase
LASTVALUE
001 SUBROUTINE LASTVALUE
002 $INCLUDE BASICLIB ACCESS.COMMON
003 ANSWER = CURRENT$<1,DCOUNT(CURRENT$,@VM)>
004 RETURN ANSWER
LAST.QTY
001 A
002 12
003
004
005
006
007
008 B:BP LASTVALUE
009 R
010 10
Dick Pick used to have a challenge for anyone to write a dictionary that
would allow printing the last value of a MV field (as I did above with a
SUBR). I figured a way to do it with A correlatives and wrote to him. He
wrote back and said the challenge was to use F correlatives, and even though
I had figured out a way, I didn't win the CIGAR. He also thanked me and
told me he was going to tell everyone he knew that there was now a way.
It took three dicts:
one to do a boolean comparison to value mark (leaves a 1 for every value
mark found)
the second to do a summation of previous step + 1
the third to do a index of the previous step on the attr to arrive at the
last value of the attr
Now it's a piece of cake to do in just about any version with all the
additions that have been done. But back in 1988 it was a *little* harder!
hth,
Allen
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Jeff Schasny
Sent: Wednesday, September 17, 2008 07:01
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] I need a correlative, just like the correlative...
I don't know how to do that in a correlative i.e. Pick/SMA style
dictionary entry. Any help would be appreciated.
Allen E. Elwood wrote:
> Which is why I always just use a subr. The real cost to the client is the
> cost creation and maintenance. Subr's are just *so* easy to understand.
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