identity_predicate.hpp

Go to the documentation of this file.

#ifndef IDENTITY_PREDICATE_HPP_
#define IDENTITY_PREDICATE_HPP_
#include <functional>

namespace vdj_pipe{

template<class T> struct Identity : public std::unary_function<T,T> {
   T const& operator()(T const& x) const {return x;}
   T& operator()(T& x) const {return x;}
};

}//namespace vdj_pipe
#endif /* IDENTITY_PREDICATE_HPP_ */