Re: anonymous class

From:
"josh" <xdevel1999@gmail.com>
Newsgroups:
comp.lang.c++
Date:
12 Apr 2007 03:03:24 -0700
Message-ID:
<1176372204.676142.26470@q75g2000hsh.googlegroups.com>
On 12 Apr, 11:17, anon <a...@no.no> wrote:

josh wrote:

Hi, is there the possibility to create anonymous class (not object) in
C++ like do Java?

as an example:

in Java if I do:

// here Shape is an Interface that is like a c++ class wih only pure
virtual functions
public static void doShape(Shape s)
{
   double v, a;

   v = s.volume();

   a = s.area();
   System.out.println("Volume: " + v + " Area: "+ a);
}

than,
doShape(
           new Shape() //
           {
                   public double area() {return 0.0;}
                   public double volume() {return 0.0;}
           }
   );

the Java compiler creates a new anonymous class that implements the
Shape interface and
than returns its reference. So the above code is like I was doing:

class Implement implements Shape
{
   public double area() {return 1.0;}
   public double volume() {return 1.0;}
}

Implement i = new Implement();
doShape(i);

Thanks


You can declare/define a class in your source (cpp) file, and it would
be the same as an anonymous class in java.
Even better - put it in anonymous (nameless) namespace.


yes but it doesn't anwer my question...

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