Template For_each problem

Hall Kann den fehler hinsichtlich for_each nicht finden, stimmt was an meine DecreaseTime klasse nicht?

Fehler:

d:\Projekte\WinCC_TagReduce\ANSI C Debug\eventqueue\eventqueue.cpp(43): error C2784: '_Fn1 std::for_each(_InIt,_InIt,_Fn1)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type'

d:\Projekte\WinCC_TagReduce\ANSI C Debug\eventqueue\eventqueue.cpp(43): error C2914: 'std::for_each' : cannot deduce template argument as function argument is ambiguous

#include "stdafx.h"
#include <vector>
#include <algorithm>

template<class T> 
class DecreaseTime{

   T m_dIntervall;   // The value to multiply by

public:
   // Constructor initializes the value to multiply by
    DecreaseTime(const T& dVal ) : m_dIntervall ( dVal ) {
   }

   // The function call for the element to be multiplied
   void operator ( ) (T &dTime ) const {
      dTime-= m_dIntervall;
   }
};

int _tmain(int argc, _TCHAR* argv[]){

	std::vector<double> test;
	for(int i=0; i< 10; i++)
		test.push_back(i*2);

	while(!test.empty()){

		std::sort(test.begin(),test.end(),std::less<double>());
		printf("\n--------- Iteration --------- Events: %i \n",test.size());
		for(std::vector<double>::iterator it= test.begin(); it != test.end(); it++)
			printf("%f \t", (*it));
		std::for_each(test.begin,test.end(),DecreaseTime<double>(1.0)); //<- FEHLER
		for(std::vector<double>::iterator it= test.begin(); (*it)<= 0;);
		}

	return 0;
}

MFK

Mit DecreaseTime ist alles in Ordnung. Bei begin fehlen die Klammern.