[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Allen Egerton
Sent: Monday, February 11, 2013 9:02 AM
To: U2 Users List
Subject: Re: [U2] : Evaluating DCOUNT
David,
You're correct that the remove is faster, and it is because it maintains an
internal pointer to the next item, as opposed
...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Dave Laansma
Sent: Tuesday, February 12, 2013 1:21 PM
To: 'U2 Users List'
Subject: Re: [U2] : Evaluating DCOUNT
Hey Allen,
The REMOVE so fast How fast is it?! Match Game throwback that I suspect the
time it takes
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Tom Whitmore
Sent: Tuesday, February 12, 2013 1:43 PM
To: U2 Users List
Subject: Re: [U2] : Evaluating DCOUNT
Hi,
When you have more than about 1,000 values in a field, changing the value mark
to a field mark, is significant. I had
: Tue, Feb 12, 2013 10:43 am
Subject: Re: [U2] : Evaluating DCOUNT
Hi,
When you have more than about 1,000 values in a field, changing the value mark
to a field mark, is significant. I had a program that needed to work through
two fields with over 20,000 values. Initially, I left the strings
: [U2] : Evaluating DCOUNT
Hi,
When you have more than about 1,000 values in a field, changing the value
mark
to a field mark, is significant. I had a program that needed to work through
two fields with over 20,000 values. Initially, I left the strings as value
delimited, used a for/next
...@listserver.u2ug.org] On Behalf Of Dave Laansma
Sent: Tuesday, February 12, 2013 1:21 PM
To: 'U2 Users List'
Subject: Re: [U2] : Evaluating DCOUNT
Hey Allen,
The REMOVE so fastHow fast is it?! Match Game throwback that I suspect the
time it takes to interpret the difference between a VM and AM
: [U2] : Evaluating DCOUNT
On 12/02/13 19:04, Wjhonson wrote:
Correct me if I'm misunderstanding you Tom, but you said that field marks are
indexes so the first scan resolves where each field begins. That is not
correct,
at least not literally.
Count or Raising or Lowering or Scanning
-users-boun...@listserver.u2ug.org] On Behalf Of Wjhonson
Sent: Tuesday, February 12, 2013 3:24 PM
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] : Evaluating DCOUNT
Yes it keeps track of the position of the current field (only), not each field.
It's not indexed. Its just a one value pointer
Subject: Re: [U2] : Evaluating DCOUNT
My understanding is that UniVerse keeps track of the location of each
attribute the first time is hits an attribute. U2 support will need to
provide a definitive answer.
I do know that we have found field marks are measurably faster than value
marks
It keeps track of the location of the last attribute touched. Not each one.
-Original Message-
From: Tom Whitmore tewhitm...@ratex.com
To: U2 Users List u2-users@listserver.u2ug.org
Sent: Tue, Feb 12, 2013 1:46 pm
Subject: Re: [U2] : Evaluating DCOUNT
My understanding
Archive
http://u2-universe-unidata.1073795.n5.nabble.com/
-Original Message-
From: Dan Fitzgerald dangf...@hotmail.com
To: u2-users u2-users@listserver.u2ug.org
Sent: Tue, Feb 12, 2013 2:07 pm
Subject: Re: [U2] : Evaluating DCOUNT
I don't know if the old list archives
On 02/11/2013 12:14 AM, Peter Cheney wrote:
Hi Everyone,
Does a DCOUNT get evaluated again for each iteration of a loop?
Or is UniVerse these days intelligent enough to keep track of what's going on?
e.g.
for i = 1 to dcount(array,@fm)
*commands here
next i
versus
totalattributes =
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] : Evaluating DCOUNT
On 02/11/2013 12:14 AM, Peter Cheney wrote:
Hi Everyone,
Does a DCOUNT get evaluated again for each iteration of a loop?
Or is UniVerse these days intelligent enough to keep track of what's going on?
e.g.
for i = 1
] On Behalf Of Jeffrey Butera
Sent: Monday, February 11, 2013 7:55 AM
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] : Evaluating DCOUNT
On 02/11/2013 12:14 AM, Peter Cheney wrote:
Hi Everyone,
Does a DCOUNT get evaluated again for each iteration of a loop?
Or is UniVerse these days
Butera
Sent: Monday, February 11, 2013 8:35 AM
To: U2 Users List
Cc: U2 Users List
Subject: Re: [U2] : Evaluating DCOUNT
David is correct (re: performance). Most of our app here have MV lists under
40-50 so it's not a huge issue. If you app has hundreds+ this could be a big
challenge.
Jeff
Of Jeffrey Butera
Sent: Monday, February 11, 2013 8:35 AM
To: U2 Users List
Cc: U2 Users List
Subject: Re: [U2] : Evaluating DCOUNT
David is correct (re: performance). Most of our app here have MV lists under
40-50 so it's not a huge issue. If you app has hundreds+ this could be a big
challenge.
Jeff
: Monday, February 11, 2013 7:55 AM
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] : Evaluating DCOUNT
On 02/11/2013 12:14 AM, Peter Cheney wrote:
Hi Everyone,
Does a DCOUNT get evaluated again for each iteration of a loop?
Or is UniVerse these days intelligent enough to keep track
Sent: Monday, February 11, 2013 12:15 AM
To: U2 Users List (u2-users@listserver.u2ug.org)
Subject: [U2] : Evaluating DCOUNT
Hi Everyone,
Does a DCOUNT get evaluated again for each iteration of a loop?
Or is UniVerse these days intelligent enough to keep track of what's going on?
e.g.
for i = 1
I have multiple views on this category of inquiry:
I think only an engineer at RocketSoftware can answer this question.
Some people actually use the non-optimization to their benefit. They
count on the fact that the expression will be evaluated on every
iteration, whether it's a DCount, Field,
Yes it's assigned to a buffer and then decremented until it matches.
The assign only takes place once.
-Original Message-
From: Ross Ferris ro...@stamina.com.au
To: U2 Users List u2-users@listserver.u2ug.org
Sent: Sun, Feb 10, 2013 11:05 pm
Subject: Re: [U2] : Evaluating DCOUNT
You can also use a SELECT/SELECTV and then use a READNEXT in the loop
-Original Message-
From: Dave Laansma dlaan...@hubbardsupply.com
To: 'U2 Users List' u2-users@listserver.u2ug.org
Sent: Mon, Feb 11, 2013 5:30 am
Subject: Re: [U2] : Evaluating DCOUNT
I would HOPE
Hi Everyone,
Does a DCOUNT get evaluated again for each iteration of a loop?
Or is UniVerse these days intelligent enough to keep track of what's going on?
e.g.
for i = 1 to dcount(array,@fm)
*commands here
next i
versus
totalattributes = dcount(array,@fm)
for i = 1 to totalattributes
The only way that this could not be an issue is if the compiler and the smarts
and determined ahead of time that the array was invariant.
My bet is solidly on plan b.
-Rick
On Feb 10, 2013, at 9:14 PM, Peter Cheney peter.che...@firstmac.com.au wrote:
Hi Everyone,
Does a DCOUNT get
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Rick Nuckolls
Sent: Monday, February 11, 2013 4:53 PM
To: U2 Users List
Subject: Re: [U2] : Evaluating DCOUNT
The only way that this could not be an issue is if the compiler and the smarts
and determined ahead of time that the array was invariant
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