RC

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@2710 331e1502-861f-0410-8da2-ba01fb791d7f

branches/rc2.0/eo/tutorial/Templates/moreOffspringGenOp.tmpl

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+/** -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+The above line is usefulin Emacs-like editors
+ */
+
+/*
+Template for general operators
+===============================
+i.e. that takes any number of parents and generates any number of offspring
+
+Here, a GenOp that creates more (or same number of) offspring
+than there are parents
+*/
+
+#ifndef eoMoreOffspringGenOp_H
+#define eoMoreOffspringGenOp_H
+
+#include <eoGenOp.h>
+
+/**
+ *  Always write a comment in this format before class definition
+ *  if you want the class to be documented by Doxygen
+ *
+ * ATTENTION, class EOT *must* derive from EO, as method invalidate()
+ * must be called if the genotypes of the indis is modified
+ */
+template<class EOT>
+class eoMoreOffspringGenOp: public eoGenOp<EOT>
+{
+public:
+  /**
+   * (Default) Constructor.
+   */
+  eoMoreOffspringGenOp(paramType _anyParameter) :
+    anyParameter(_anyParameter) {}
+
+  /// The class name. Used to display statistics
+  string className() const { return "eoMoreOffspringGenOp"; }
+
+  /// The TOTAL number of offspring (including modified parents)
+  unsigned max_production(void) { return NbOffspring; }
+
+  /**
+   * eoMoreOffspringGenOp operator - eventually modifies the parents
+   *     BUT does generate more offspring
+   *
+   * @param _pop a POPULATOR (not a simple population)
+   */
+    void apply(eoPopulator<EOT>& _plop)
+    {
+      EOT& parent1 = *_plop; // select the first parent
+      ++_plop;          // advance once for each selected parents
+      ...
+      EOT& parentN = *_plop; // select the last parent
+		 // don't advance after the last one: _plop always
+		 // points to the last that has already been treated
+
+      // apply operator to the parents (modifying them AND generating
+      // new individuals ofs1, ofs2, ..., ofsN
+      ++_plop;          // advance before each insertion
+      _plop.insert(ofs1);
+      ...
+      ++_plop;          // advance before each insertion
+      _plop.insert(ofsN);
+
+      // oh right, and invalidate fitnesses of modified parents
+      parent1.invalidate();
+      ...
+      parentN.invalidate();
+    }
+
+
+private:
+  paramType anyParameter
+};
+
+#endif