Disabling Copy Constructor

[TheEnigmist]

I'm trying to learn about C++11 disabling constructors, so i downloaded and installed VS11 Ultimate Beta.
When i try to compile my little code i got errors. This is the code:

#include <string>
#include <iostream>
class MyClass
{
	friend std::ostream& operator<<(std::ostream &, const MyClass &);
public:
	MyClass(int number=0,std::string string="");
	~MyClass();

	//disable copy
	MyClass(const MyClass &copyClass)=delete;
	MyClass& operator=(const MyClass &rightClass)=delete;

private:
	int aNumber;
	std::string aString;
};

I got these errors:

1>..\myclass.h(12): error C2059: syntax error : ';'
1>..\myclass.h(12): error C2238: unexpected token(s) preceding ';'
1>..\myclass.h(13): error C2059: syntax error : ';'
1>..\myclass.h(13): error C2238: unexpected token(s) preceding ';'

It will link me to:

MyClass(const MyClass &copyClass)=delete;
MyClass& operator=(const MyClass &rightClass)=delete;

What is wrong?

[guestgulkan]

Not yet supported.
VS11 ccompliance with C++11 list of features is here:

http://blogs.msdn.com/b/vcblog/archive/2011/09/12/10209291.aspx

[TheEnigmist]

Oh! I see... so i've to w8 :S Thx for fast reply!

[Telion]

No version of Visual Studio supports this feature. For now, all you can do is declare those functions in the private section and never define them.

[TheEnigmist]

I see.
There is a way to store inside a vector a normal class and not its copy?
Some1, some month ago, said me that it's possible to do disabling copy constructor and assign op.
I'm tring something like this:

int main()
{
	std::vector<MyClass> vect;
	vect.push_back(MyClass(23,"Prova"));
	system ("PAUSE");
	return EXIT_SUCCESS;
}

But it will create a class then vect will store a copy of MyClass.

[cire]

if MyClass has a move constructor, it will create an object and then 'move' it into the vector, bypassing the copy constructor.

[Cubbi]

@TheEnigmist
If your compiler suppors emplace for vectors, it is

vect.emplace_back(23,"Prova");

[vlad from moscow]

MS VC++ is a very bad compiler! Apart from that it does not support many features of the C++ 11, it has many bugs that are not being fixed during many years. So if there is a possibility to use another compiler then use it!
An example of the very old bug of the compiler

#include "stdafx.h"

class A
{
public:
	A() {}
private:
	A( const A & );
};

class B : public A
{
};

class C
{
	A a;
};

int _tmain(int argc, _TCHAR* argv[])
{
	B b = B();
	C c = C();

	return 0;
}

There is a very bad management of the compiler project in Microsoft.

[TheEnigmist]

@Vlad
All ppl around internet say taht MS VS is best compiler (or debugger?). What do you suggest as C++ compiler?

[vlad from moscow]

The problem is that Microsoft keeps the monopoly due to big money. It is not the question of the best compiler. It is the question of the monopoly.

[TheEnigmist]

I see. So we can do nothing about this. I know only Visual Studio and Eclipse as compiler :S

[vlad from moscow]

You can use also for example GCC 4.7

[cire]

That is a pretty heinous bug. It might lead you to believe that:

B b ;
C c ;
B b2(b) ;
C c2(c) ;

would compile, but, of course, it doesn't. Who knows why that one particular bug hasn't been top priority? It's clearly disabling. I don't know how people manage to code productively with a bug like this.

Any chance we can skip the proselytizing?

[vlad from moscow]

It is funny that this bug is known during many years.:)

[TheEnigmist]

Gcc support deleting copy constructors :P
It's time to change compiler!
IT is possible to use VS and GCC? I think VS's debugging is the best on net! Am i wrong?