C / C++ / MFC

devvvy5-Dec-02 3:49

5-Dec-02 3:49

QUOTE: "You can always create external DLL in C++ for more computational intensive stuff,"

sure. but isnt it true that all .NET languages compiled to IL? speed is more or less the same among all .NET languages?

QUOTE 2: "or things that are easier made in C++ than in VB."

any examples?

norm

Daniel Turini5-Dec-02 5:02

5-Dec-02 5:02

norm wrote:
sure. but isnt it true that all .NET languages compiled to IL? speed is more or less the same among all .NET languages?
Yes and no: under C++ you can mix unmanaged and managed code, so you can still generate native code with a ".NET face"

I see dumb people

Rickard Andersson²⁰5-Dec-02 3:58

Rickard Andersson²⁰

5-Dec-02 3:58

Abolish VB!

I will not say anything more... I've said too much about what I think of VB in these forums... Suspicious | :suss:

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Michael P Butler5-Dec-02 4:03

Michael P Butler

5-Dec-02 4:03

If you want to write managed .NET code, go with C# and use managed C++ for wrapping legacy code.

Don't even think about VB.NET; It is a poor language, has no advantage over C#. There are a lot of bodges in VB.NET to keep old VB programmers happy.

Everything you can do in VB.NET, you can do in C# and C# will give you a more solid code base.

Michael

Fat bottomed girls
You make the rockin' world go round -- Queen

devvvy5-Dec-02 4:10

5-Dec-02 4:10

that's something new. i did play with VB.NET a little, seems very nice and efficient. where can i read up a lil more on how exactly is c# better than VB.NET?

thanks!

norm

Daniel Turini5-Dec-02 4:29

5-Dec-02 4:29

norm wrote:
where can i read up a lil more on how exactly is c# better than VB.NET?
I use both a lot, and I can say there are some strong points favorable to C# over VB.NET:

.C# has a much cleaner syntax. No legacy compatibility to concern about.
.It may seem stupid, but VB IDE has an auto-identing "feature" extremely annoying
.C# has the "using" statement for automatic destruction of IDisposable object instances. VB.NET code will need to use lots of Try/Catch code to do the same thing and is very probable having resource and memory leaks under it.
.C# can go "unsafe" and use pointer manipulation.
.C# can create more than one namespace per project.
.C# can control on code block basis, wether the integer arith. expressions are checked or not.
.C# can stack allocate arrays which will not be garbage collected
.By default, C# is type-safe (Option Strict On), and a clean syntax for type coercion. This is a thing VB programmers will have a hard time catching on.
.VB.NET has a very weird syntax for calling static class members
.VB.NET has two error handling models: some functions will raise errors, other exceptions. This leads to interesting bugs.
.Under C# you can have static class constructors. This can eliminate several "if x is Nothing" statements and reduce coding.
.Signed ("Strong Named") assemblies in C# can generate signed Interop assemblies right from the IDE when calling legacy COM code. Under VB.NET you'll have to resort to tlbimp.

I'm specially concerned about the C# audience and the VB.NET audience. The next version of C# has been already anounced with tons of nice and useful features, like templates, anonymous delegates and iterators. Nothing of these will be available to VB.NET soon, because it's too complicated for VB.NET programmers.

I see dumb people

devvvy5-Dec-02 4:38

5-Dec-02 4:38

quote: "VB.NET has two error handling models: some functions will raise errors, other exceptions. This leads to interesting bugs."

raising errors and throwing exception? arent the two the same?

norm

Daniel Turini5-Dec-02 4:52

5-Dec-02 4:52

norm wrote:
raising errors and throwing exception? arent the two the same?
No, under VB.NET, not, because of backwards compatibility.
I've saw some really scary code some time ago, involving the new "On Error Goto -1" error that demonstrated they are not the same. I don't recall where I saw it, but if I find this sample again, I'll send you.

I see dumb people

devvvy5-Dec-02 4:55

5-Dec-02 4:55

GOTO? didnt know it still exists in dot-net.

thanks =)

norm

Daniel Turini5-Dec-02 4:59

5-Dec-02 4:59

norm wrote:
GOTO? didnt know it still exists in dot-net.
Not only exists, but it needed to be "enhanced":
Local machine MSDN Link

I see dumb people

Daniel Turini5-Dec-02 4:38

5-Dec-02 4:38

Oh, and I almost forgot: C# has a XML documentation feature which can generate a nice documentation, specially for big projects.

I see dumb people

devvvy5-Dec-02 5:13

5-Dec-02 5:13

also, direct memory manipulation in C++, is it available in C#?

can u manipulate individual bit?

what application can u see for this? Communication between Java and C++ over raw socket? what else?

norm

Daniel Turini5-Dec-02 6:06

5-Dec-02 6:06

norm wrote:
also, direct memory manipulation in C++, is it available in C#?
can u manipulate individual bit?

More or less. You can have pointers and manipulate memory with them, but there are some cares that need to be taken, like pinning memory, because the GC is moving memory all the time. And the pointers are checked, which will prevent buffer overflows, memory corruption and GPFs.
Direct bit manipulation? Yes. The syntax is exactly the same of C++. And better, you have some enum candies which can do automatic bit manipulation for you. VB.NET has this too, but with an UGLY syntax.

norm wrote:

what application can u see for this? Communication between Java and C++ over raw socket? what else?
This and imaging. You have GDI+ and can do very fast coding in C# using pointer and image manipulation. Under VB.NET you are doomed to the very slow GetPixel and SetPixel for this.

I see dumb people

Christian Graus5-Dec-02 9:37

Christian Graus

5-Dec-02 9:37

norm wrote:
VB.NET is not any slower than VC.NET.

Actually, VC.NET creates optimised IL code.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

devvvy5-Dec-02 9:51

5-Dec-02 9:51

thanks people. so, looks like C# is the future isnt it? with VB out of the question, which would u choose between VC.NET and C#?

norm