+ added eoFunctorStat class

eo/src/utils/eoFuncPtrStat.h

@@ -4,6 +4,8 @@
 #include <eoFunctorStore.h>
 #include <utils/eoStat.h>
 
+
+
 /** Wrapper to turn any stand-alone function and into an eoStat.
  *
  * The function should take an eoPop as argument.
@@ -41,4 +43,38 @@ eoFuncPtrStat<EOT, T>& makeFuncPtrStat( T (*func)(const eoPop<EOT>&), eoFunctorS
         );
 }
 
+/** Wrapper to turn any stand-alone function and into an eoStat.
+ *
+ * The function should take an eoPop as argument.
+ *
+ * @ingroup Stats
+ */
+template <class EOT, class T>
+class eoFunctorStat : public eoStat<EOT, T>
+{
+public :
+    eoFunctorStat(eoUF< const eoPop<EOT>&, T >& f, std::string _description = "functor")
+        : eoStat<EOT, T>(T(), _description), func(f)
+        {}
+
+    using eoStat<EOT, T>::value;
+
+    void operator()(const eoPop<EOT>& pop) {
+        value() = func(pop);
+    }
+
+private:
+    eoUF< const eoPop<EOT>&, T >& func;
+};
+
+/**
+ * @ingroup Stats
+ */
+template <class EOT, class T>
+eoFunctorStat<EOT, T>& makeFunctorStat( eoUF< const eoPop<EOT>&, T >& func, eoFunctorStore& store, std::string description = "func") {
+    return store.storeFunctor(
+        new eoFunctorStat<EOT, T>( func, description)
+        );
+}
+
 #endif