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Use of STL's std::set

• testIdiomSet.cc:

  /*
      \file
      Test use of Owned in std::set container.
  */
  
  #include <set>
  #include <algorithm>
  
  #include "Deriveds.hh"
  #include "OwnedPtr.hh"
  #include "BLink.hh"
  using namespace MangoPtr;
  
  namespace std {
      template <typename T>
      void swap( Owned<T>& a, Owned<T>& b) {a.swap(b);}
  }
  
  /*
      Test use of Owned and BLink with container of Owneds. 
      
      Std::rotate() seems to require swap(const Owned, const Owned), 
      which doens't really make sense.  So above specialization 
      doesn't get picked, and in turn this calls the default std::swap,
      which uses operator=, which is private for Owned. STL bug?
  */
  int main()
  {
      std::cout << "Using std::set..." << std::endl;
      typedef Owned<Base*, OShared> PType;
      //typedef Base* PType;
      std::set<PType> owners;
      for (int i=0; i<5; i++)
          owners.insert( PType(new Derived1) );
      std::cout << "Number of Base's created: " << Base::count << std::endl;
      
      for (std::set<PType>::const_iterator ii = owners.begin();
           ii != owners.end(); ++ii)
      {
          BLink<Base> p( *ii );
          std::cout << "Base " << p()->num() << " ";
      }
      std::cout << std::endl;
  }
  
  /*  Output:
  
      Using std::set...
      Instantiating an 8Derived1# 1
      Copying Base # 1
      Destroying an 8Derived1# 1
      Instantiating an 8Derived1# 3
      Copying Base # 3
      Destroying an 8Derived1# 3
      Instantiating an 8Derived1# 5
      Copying Base # 5
      Destroying an 8Derived1# 5
      Instantiating an 8Derived1# 7
      Copying Base # 7
      Destroying an 8Derived1# 7
      Instantiating an 8Derived1# 9
      Copying Base # 9
      Destroying an 8Derived1# 9
      Number of Base's created: 10
      Base # 10 Base # 8 Base # 6 Base # 4 Base # 2 
      Destroying an 8Derived1# 2
      Destroying an 8Derived1# 4
      Destroying an 8Derived1# 6
      Destroying an 8Derived1# 8
      Destroying an 8Derived1# 10
  */
  

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