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  1. #include <iostream>
  2. #include <map>
  3. #include <string>
  4. using namespace std;
  5.  
  6. #define EXPAND_VALUES(action)			\
  7. 	action (1, SUNDAY,    "Sunday")		\
  8. 	action (2, MONDAY,    "Monday")		\
  9. 	action (3, TUESDAY,   "Tuesday")	\
  10. 	action (4, WEDNESDAY, "Wednesday")	\
  11. 	action (5, THURSDAY,  "Thursday")	\
  12. 	action (6, FRIDAY,    "Friday")		\
  13. 	action (7, SATURDAY,  "Saturday")
  14.  
  15. #define DEF_ENUM(i,v,s)	v = i,
  16. enum class Days : int { EXPAND_VALUES(DEF_ENUM) };
  17. #undef DEF_ENUM
  18.  
  19. #define DEF_MAP(i,v,s)	{i, Days::v},
  20. std::map<int, Days> WeekMap { EXPAND_VALUES(DEF_MAP) };
  21. #undef DEF_MAP
  22.  
  23. #define DEF_STR_MAP(i,v,s)	{Days::v, s},
  24. std::map<Days, std::string> WeekStrMap { EXPAND_VALUES(DEF_STR_MAP) };
  25. #undef DEF_STR_MAP
  26.  
  27. int main() {
  28. 	cout << WeekMap.size() << endl;
  29. 	for (auto const & e : WeekMap)
  30. 		cout << e.first << " -> " << int(e.second) << endl;
  31. 	cout << WeekStrMap.size() << endl;
  32. 	for (auto const & e : WeekStrMap)
  33. 		cout << int(e.first) << " -> " << e.second << endl;
  34.  
  35. 	return 0;
  36. }
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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7
1 -> 1
2 -> 2
3 -> 3
4 -> 4
5 -> 5
6 -> 6
7 -> 7
7
1 -> Sunday
2 -> Monday
3 -> Tuesday
4 -> Wednesday
5 -> Thursday
6 -> Friday
7 -> Saturday
https://ideone.com/TofKm6
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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