Utils.h

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#ifndef RecoLuminosity_LumiProducer_Utils_H
#define RecoLuminosity_LumiProducer_Utils_H
#include <string>
#include <sstream>
#include <iostream>
namespace lumi{
  template <class T> bool from_string(T& t, 
                      const std::string& s, 
                      std::ios_base& (*f)(std::ios_base&)){
    std::istringstream iss(s);
    return !(iss >> f >> t).fail();
  }
}
#endif