How do I make a class uncloneable?

[Gaijinco]

I know that by default every class has overloaded operator= and the
copy constructor.

How then can I make a class uncloneable?

Thanks.

 

[gnuyuva]

I know that by default every class has overloaded operator= and the
copy constructor.

How then can I make a class uncloneable?

Thanks.

struct unclonable
{
private:
unclonable& unclonable(const unclonable&);
unclonable& operator=(const unclonable&);
};

derive your concrete classes from this struct.

 

[Juha Nieminen]

struct unclonable
{
private:
unclonable& unclonable(const unclonable&);

Are you sure?

 

[gnuyuva]

Are you sure?

Oh, sorry its a copy constructor ;-)

 

[wo3kie]

Much faster and readable with intention is

struct unclonable : boost::noncopyable
{

};

 

[James Kanze]

Much faster and readable with intention is

struct unclonable : boost::noncopyable
{
};

If you're familiar with Boost. I originally used something like
this long before Boost existed. I dropped it because most
maintenence programmers weren't as familiar with it as they were
with the standard idiom of making the copy constructor and the
assignment operator private. (I've since started using it
again, because I'm hoping that Boost will make it widely known.)