boost::algorithm::is_equal — is_equal functor
struct is_equal { // public member functions template<typename T1, typename T2> bool operator()(const T1 &, const T2 &) const; };
Standard STL equal_to only handle comparison between arguments of the same type. This is a less restrictive version which wraps operator ==.
is_equal
template<typename T1, typename T2> bool operator()(const T1 & Arg1, const T2 & Arg2) const;
Compare two operands for equality
