is void a datatype ?

Question

1.00/5 (4 votes)

See more:

VB

is void a datatype ?
describe whether void is return type or datatype ?
if return type than what it returns ??

Posted 10-Jan-13 6:41am

Member 9746249

Add a Solution

Comments

Sergey Alexandrovich Kryukov 10-Jan-13 13:07pm

Do you think that asking is easier then just reading? :-)
—SA

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Adam R Harris · Answer 1 · 2013-01-10T06:52:00

Solution 2

Void is a keyword in c# that indicates the function doesn't return a value.
Void does not exist in VB.NET

Posted 10-Jan-13 6:52am

Adam R Harris

Comments

Sergey Alexandrovich Kryukov 10-Jan-13 13:06pm

~~Not true, period. Voted 1, sorry.~~
This is incomplete and not quite accurate explanation, but, unfortunately, I also misread you, so I changed my vote.
Please see more correct Solution 1.

Here is what happens with VB.NET: the types are of course exactly the same. As "void" is not a type in any sense of this word, but only a syntax artifact (and, by the way, pretty weird, inherited from the lame C), "void" is really not needed. "SomeFunction(void)" is a total bogus, should be "SomeFunction(void)", "void F()" simply means that the return is not used (not return type, but return itself, which is important), and "void* pointer" is not needed in VB, because there are no traditional pointers at all (in "unsafe"), IntPtr can be used.

Overall, as void never means any something really existing, such notion is not needed, in general case.

Well, there is also System.Void, but this is only needed as a result of Reflection, to denote return of "Sub".

—SA

Adam R Harris 10-Jan-13 15:06pm

Huh, I didn't know VB used void at all. I tried working the googles but i couldnt find anything related to VB.NET and void. Do you know of anywhere i can read up on it? not trying to be a jerk or discount your comment I am genuinely curious.

Sergey Alexandrovich Kryukov 10-Jan-13 16:30pm

Oh! Sorry, I made some mistake, trying to fix it.

Thank you for this comment — this way, you helped me to fix my mistake. I just misread you, as if you were talking about .NET in general. I've done the same mistake in my comment to Solution 1. I tried to explain everything above.

That's why it's a right idea to try to discuss everything if there is a concern, and motivate the votes. Only this way we get a chance to fix out mistakes.
You did it, thank you.

—SA

ridoy · Answer 2 · 2013-01-10T06:50:00

Solution 1

Basically it means "nothing" or "no type".
There are 3 basic ways that void is used:

1) Function argument: int myFunc(void) -- the function takes nothing.
2) Function return value: void myFunc(int) -- the function returns nothing
3) Generic data pointer: void* data; -- 'data' is a pointer to data of unknown type, and cannot be dereferenced

Posted 10-Jan-13 6:50am

ridoy

Comments

Sergey Alexandrovich Kryukov 10-Jan-13 13:06pm

Explained. My 5.
Wait a second... you did not address VB.NET as OP wanted. Whatever...
—SA

ridoy 10-Jan-13 13:14pm

Thanks SA,yes i miss that but i don't edit those,because OP will know all those void types which is used most of the programming language..:)

Sergey Alexandrovich Kryukov 10-Jan-13 16:14pm

Fair enough.
—SA