except.hpp

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#ifndef _DG_EXCEPT_HPP_
#define _DG_EXCEPT_HPP_
 
#include <exception>
#include <stdexcept>
 
namespace dg {
class out_of_range : public std::out_of_range {
    using std::out_of_range::out_of_range;
};
class runtime_error : public std::runtime_error {
    using std::runtime_error::runtime_error;
};
class node_not_exists : public out_of_range {
    using out_of_range::out_of_range;
};
} // namespace dg
 
#endif