[openbeos] Re: C++ Compatibility
- From: "Scott MacMaster" <scottmacmaster@xxxxxxxxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Sun, 17 Mar 2002 20:52:18 PST (-0800)
> Are you referring to the the STL that is distributed with BeOS R5, or
> to
> the Be headers like Application.h, Window.h,... ?
I refering mainly to the files under headers/cpp/ and headers/posix/.
I don't think I've had an issue with any other header files.
> Are you sure? Can you post examples?
As for an example:
///////////////////////////
#include <string>
int main()
{
return 0;
}
///////////////////////////
Now, go into the BeIDE project settings and under Language/C++
Warnings. Their I turned on these settings:
-Issue all warning demanded by strict ANSI C/C++
-Warn when one local variable shadows another
-Warn about overloaded virtual functions names
-Warn if a c-style cast is used in a program
-Warn about violations of "Effective C++" style rules
Now compile. You'll get 69 warnings. In my previous e-mail I
indicated I got a lot more. This was, of course, not from compling
this example. That number was from a much larger program. I'm working
on.
Recently I've been editing the header files on my system and adding in
c++ type casting operators. Once I finish I'll be able to use the
option, "warn if a c-style cast is used in a program." If I recompile
the same example above but when my modified header files I get 37
warnings.
> But what is so bad about a C style cast, if it is used properly?
> Whenever a dymic_cast<> is necessary, I would use it.
The problem is that you can accidentally use it improperly. It's
possible to misuse the c++ style cast but for the most part it's a lot
harder to accidently make a mistake if you you the c++ style cast.
Basically, this is because you're telling the compiler what kind of
casting you're doing and it makes sure that you did do that.
> > -Not using the initializer list in the constructors of classes
> Sometimes not easily possible, but in the simple case, it should be
> used, agreed.
Sometimes my initializer list gets kinda' long but I put it in all my
classes.
Thanks,
Scott MacMaster
www.CodeLiege.com
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