eoSelectMany.h

//-----------------------------------------------------------------------------

#ifndef _eoSelectMany_h
#define _eoSelectMany_h


//-----------------------------------------------------------------------------
#include <eoSelect.h>
#include <eoSelectOne.h>
#include <utils/eoHowMany.h>
#include <math.h>
//-----------------------------------------------------------------------------

template<class EOT>
class eoSelectMany : public eoSelect<EOT>
{
 public:
     eoSelectMany(eoSelectOne<EOT>& _select,
                    double  _rate, bool _interpret_as_rate = true)
         : select(_select), howMany(_rate, _interpret_as_rate) {}

     // Ctor with eoHowMany
     eoSelectMany(eoSelectOne<EOT>& _select, eoHowMany _howMany)
         : select(_select), howMany(_howMany) {}

  virtual void operator()(const eoPop<EOT>& _source, eoPop<EOT>& _dest)
  {
    unsigned target = howMany(_source.size());

    _dest.resize(target);

    select.setup(_source);

    for (size_t i = 0; i < _dest.size(); ++i)
      _dest[i] = select(_source);
  }

private :
  eoSelectOne<EOT>& select;
  eoHowMany howMany;
};

#endif