Solved

paren or not paren

Posted on 2000-03-30
12
214 Views
Last Modified: 2010-05-02
Can anyone tell me the difference between:
If (x = 0) Then

and

If x = 0 Then

someone told me that there was a difference. If there is, then when would you use one over the other?
0
Comment
Question by:buyer
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
  • 3
  • +2
12 Comments
 
LVL 1

Expert Comment

by:riduce
ID: 2670756
here is you're answer
y + x * 8 = 80
y + (x * 8) = 52

0
 
LVL 1

Expert Comment

by:riduce
ID: 2670760
here is you're answer
y + x * 8 = 80
y + (x * 8) = 52

0
 
LVL 1

Expert Comment

by:riduce
ID: 2670768
here is you're answer
y + x * 8 = 80
y + (x * 8) = 52

0
Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

 
LVL 1

Expert Comment

by:riduce
ID: 2670776
oops sorry for the tripple message
0
 
LVL 7

Expert Comment

by:BarryTice
ID: 2670783
The only difference I'm aware of is ease of reading.

There could be less certainty with something like the following:

If X = 0 And Y = 1 Then

and

If (X = 0) And (Y = 1) Then

Without the parenthesis, VB could interpret as

If X = (0 And Y)

and get results you aren't expecting. (I don't honestly know how VB responds in this case. I always use parenthesis in these kinds of cases to avoid ambiguity. But, then again, I'm one of those bastards who always comments my code, too.)

With the simple expression in your example, though, there shouldn't be a functional difference, I don't think.

-- b.r.t.
0
 

Author Comment

by:buyer
ID: 2670792
Yeah, I know about that. That doesnt answer the question for comparison though. Im using x = 0 and (x = 0) in an if then else statement.
0
 
LVL 6

Expert Comment

by:DrDelphi
ID: 2670803
There are two reasons for this.

1. if (X=0)=Boolean
 
For example:
   List1.enabled=(x=0)

2. if you take 5+2+7-3+10=?
 
   a.(5+2)+(7-3)+10=21
   b. 5+(2+7)-(3+10)=1
 
The grouping is critical.

Good luck!!
       
0
 

Author Comment

by:buyer
ID: 2670821
Again DrDelphi - you are explaining addition. Yeah, I know about this. I am not adding, subtracting, etc anything. I am comparing.
If (x = 0) Then
....
and

If x = 0 Then
....
What is the difference here?
0
 
LVL 6

Accepted Solution

by:
DrDelphi earned 50 total points
ID: 2670831
x=0 is a mathematical expression

(x=0) is treated as a codition to either be met or not, hence a boolean. I thought I made that clear last time.

0
 
LVL 6

Expert Comment

by:DrDelphi
ID: 2670841
also, in this particular case there is no real difference.... but for giggles try this:

x=5

debug.print (x=0)


0
 
LVL 4

Expert Comment

by:gcs001
ID: 2670871
Funny enough debug.print x = 0 also displays False, so it seems that both x = 0 and (x = 0) result in a Boolean value depending of course on the context it's used in.
0
 

Author Comment

by:buyer
ID: 2670882
Thanks
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I’ve seen a number of people looking for examples of how to access web services from VB6.  I’ve been using a test harness I built in VB6 (using many resources I found online) that I use for small projects to work out how to communicate with web serv…
Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question