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#ifndef FBTK_SELECT2ND_HH
#define FBTK_SELECT2ND_HH
#include <functional>
namespace FbTk {
template <class A>
class Select2nd:public std::unary_function<A, typename A::second_type> {
public:
typename A::second_type operator () (const A &arg) const {
return arg.second;
}
};
} // namespace FbTk
#endif // FBTK_SELECT2ND_HH
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