Adding more repalcements utilities (see do/make_easea_algo.h)

eo/src/eoTruncSelect.h

@@ -0,0 +1,73 @@
+/** -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+   -----------------------------------------------------------------------------
+   eoTruncSelect.h 
+   (c) Maarten Keijzer, Marc Schoenauer, GeNeura Team, 2002
+ 
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
+             Marc.Schoenauer@polytechnique.fr
+             mkeijzer@dhi.dk
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef _eoTruncSelect_h
+#define _eoTruncSelect_h
+
+
+//-----------------------------------------------------------------------------
+#include <eoSelect.h>
+#include <utils/eoHowMany.h>
+#include <math.h>
+//-----------------------------------------------------------------------------
+
+/** eoTruncSelect selects individuals after truncating the population
+ * using eoSelectOne as it's mechanism. 
+ * Therefore eoSelectMany needs an eoSelectOne in its ctor
+ * It will use an eoHowMnay to determine the number of guys to keep,
+*/
+template<class EOT>
+class eoTruncSelect : public eoSelect<EOT>
+{
+ public:
+  /** Ctor: from an eoSelect (and an eoMany to tell how many are kept for selectino */
+  eoSelectMany(eoSelectOne<EOT>& _select, eoHowMany _howMany) 
+    : select(_select), howMany(_howMany) {}
+  
+     /**
+     The implementation repeatidly selects an individual
+
+     @param _source the source population
+     @param _dest  the resulting population (size of this population is the number of times eoSelectOne is called. It empties the destination and adds the selection into it)
+     */
+  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