boost::any helper

any_cast.h

#ifndef ANY_CAST_H
#define ANY_CAST_H
#include "stdc++.h"
#include <boost/any.hpp>

using namespace std;
#define bac boost::any_cast

class cast {
private:
	boost::any v;
public:
	cast(const boost::any &a) {
		v = a;
	}
	operator int() {
		if (v.type == typeid(int32_t))
			return bac<int32_t>(v);
		else if (v.type == typeid(int64_t))
			return bac<int64_t>(v);
		else if (v.type == typeid(long))
			return bac<long>(v);
		else if (v.type == typeid(short))
			return bac<short>(v);
		else
			return 0;
	}
	operator float() {
		if (v.type == typeid(double))
			return bac<double>(v);
		else if (v.type == typeid(float))
			return bac<float>(v);
		else
			return 0;
	}
	template<typename T>
	operator T() {
		return bac<T>(v);
	}
};

#undef bac
#endif