Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
Query Regarding EVALUATE

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> COBOL Programming
View previous topic :: :: View next topic  
Author Message
bipinpeter

Active User


Joined: 18 Jun 2007
Posts: 213
Location: Cochin/Kerala/India

PostPosted: Wed Sep 24, 2008 3:53 pm    Post subject: Query Regarding EVALUATE
Reply with quote

Hi all,
I've a doubt in usage of EVALUATE.
In which case we can use EVALUATE and in which case we can use if.
Which one is more effective in basis of performance?

Regards,
Bipin Peter
Back to top
View user's profile Send private message

anil.csk

New User


Joined: 22 Oct 2007
Posts: 16
Location: Noida

PostPosted: Wed Sep 24, 2008 4:40 pm    Post subject: Reply to: Query Regarding EVALUATE
Reply with quote

the better way to use Evaluate when your are going to handle the more than 2 or 3 Condition ..

IF you can use where there ARE only 2 or three condition.
Back to top
View user's profile Send private message
Arun Raj

Moderator


Joined: 17 Oct 2006
Posts: 2285
Location: @my desk

PostPosted: Wed Sep 24, 2008 5:19 pm    Post subject:
Reply with quote

Evaluate is an easily understandable replacement for Nested-IF conditions.
Back to top
View user's profile Send private message
santy
Warnings : 1

New User


Joined: 19 Jul 2007
Posts: 22
Location: mumbai

PostPosted: Thu Sep 25, 2008 12:38 pm    Post subject:
Reply with quote

Evalutate is mostly useful at the time of Nested-IF conditions,

When in your program more that 3-4 conditions u have to handle then it is good option to replace IF with Evaluate condition.
Back to top
View user's profile Send private message
Anuj Dhawan

Senior Member


Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Thu Sep 25, 2008 1:27 pm    Post subject:
Reply with quote

Hi Bipin,

I would rather ask - why would this be your concern ? Did you try something & it didn't work out ? What research you have done so far ?
Back to top
View user's profile Send private message
dbzTHEdinosauer

Global Moderator


Joined: 20 Oct 2006
Posts: 6968
Location: porcelain throne

PostPosted: Thu Sep 25, 2008 2:29 pm    Post subject:
Reply with quote

if you have a question about what instruction is more efficient, why do you not look at the object code generated (can be found in compile listing).
Back to top
View user's profile Send private message
Terry Heinze

JCL Moderator


Joined: 14 Jul 2008
Posts: 1249
Location: Richfield, MN, USA

PostPosted: Mon Sep 29, 2008 1:33 am    Post subject:
Reply with quote

"Which one is more effective in basis of performance?"
Although still important in a few specific cases, due to CPU speeds nowadays, I'd be more concerned with readability (maintainability) than saving a few microseconds of time.
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> COBOL Programming All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts HEX value search in a DB2 query maxsubrat DB2 2 Wed Oct 04, 2017 3:04 pm
No new posts Create procedure issues -628 when add... chandraBE DB2 1 Mon Sep 18, 2017 12:16 pm
No new posts Can we limit length in concatenation ... balaji81_k DB2 7 Tue Aug 22, 2017 2:50 am
No new posts Need DB2 query to fetch previous row ! Chandan1993 DB2 10 Sat Jun 03, 2017 10:43 am
No new posts JCL to Set Return code based on DB2 S... vinu78 DB2 17 Mon Mar 13, 2017 9:47 pm

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us