Re: Private method has been invokated as interface

From:
Francis Glassborow <francis@robinton.demon.co.uk>
Newsgroups:
comp.lang.c++.moderated
Date:
9 May 2006 19:18:55 -0400
Message-ID:
<JTxtKzIJJHYEFw7z@robinton.demon.co.uk>
In article <1147102381.813481.135920@j73g2000cwa.googlegroups.com>, Alex
Vinokur <alexvn@users.sourceforge.net> writes

In program below a private method has been invokated as interface.

It is techically clear, but it is intuitively unclear.


And the problem is?

------ foobar.cpp ------
#include <iostream>
using namespace std;

class Base
{
public:
  virtual void foo() = 0;
};

class Derived : public Base
{
private:
  void foo() { cout << "foo(): I am private" << endl; }
};


And this is a perfectly reasonable idiom if you do not want objects of
type Derived to be used directly but only by use of pointers or
references to Base.

--
Francis Glassborow ACCU
Author of 'You Can Do It!' see http://www.spellen.org/youcandoit
For project ideas and contributions: http://www.spellen.org/youcandoit/projects

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