result_visitor.h

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#ifndef HEDGEHOG_RESULT_VISITOR_H_
#define HEDGEHOG_RESULT_VISITOR_H_
namespace hh {
 
template<class... Ts>
struct ResultVisitor : Ts ... { using Ts::operator()...; };
 
template<class... Ts> ResultVisitor(Ts...) -> ResultVisitor<Ts...>;
}
#endif //HEDGEHOG_RESULT_VISITOR_H_