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  1. #include <iostream>
  2. #include <ostream>
  3.  
  4. using namespace std;
  5.  
  6. struct OneOfParamCont
  7. {
  8.     int param1;
  9.     float param2;
  10. };
  11. template<typename ParamClass, typename ParamType>
  12. ParamType  QueryParam( ParamType (ParamClass::*param), const ParamType& defaultVal = ParamType() )
  13. {
  14. 	return defaultVal;
  15. }
  16. template<typename ResultType, typename ParamClass, typename ParamType>
  17. ResultType  QueryParam( ParamType (ParamClass::*param), const ResultType& defaultVal = ResultType() )
  18. {
  19. 	return defaultVal;
  20. }
  21. int main()
  22. {
  23.     float t1 = QueryParam( &OneOfParamCont::param2, 1.f );
  24.     float t2 = QueryParam( &OneOfParamCont::param2, 1 );
  25.     float t3 = QueryParam( &OneOfParamCont::param2 );
  26.     float t4 = QueryParam( &OneOfParamCont::param2 );
  27.     float t5 = QueryParam<float>( &OneOfParamCont::param2, 1.f );
  28.     float t6 = QueryParam<float>( &OneOfParamCont::param2, 1 );
  29.     float t7 = QueryParam<int>( &OneOfParamCont::param2, 1.f );
  30.     float t8 = QueryParam<int>( &OneOfParamCont::param2, 1 );
  31. }
Success #stdin #stdout 0s 2892KB
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https://ideone.com/bZaHQl
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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