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  1. #include <iostream>
  2. #include <typeinfo>
  3. using namespace std;
  4.  
  5. struct mystruct{};
  6.  
  7. template<typename T>
  8. struct map;
  9.  
  10. //partial specification
  11. #define MAPPING(Key, Val)       \
  12. template<>                      \
  13. struct map<Key>                 \
  14. {                               \
  15. typedef Val mapping_type;	\
  16. };
  17.  
  18. MAPPING(mystruct, int)
  19.  
  20. template<typename T>
  21. void func(T t)
  22. {
  23. 	typename map<T>::mapping_type i = 999;
  24. 	cout<<i<<endl;
  25. }
  26.  
  27.  
  28. int main() {
  29. 	// your code goes here
  30. 	mystruct ms;
  31. 	func(ms);
  32.  
  33. 	return 0;
  34. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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999
https://ideone.com/yefbtk
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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