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  1. #include <iostream>
  2. #include <map>
  3. #include <functional>
  4. #include <algorithm>
  5. using namespace std;
  6.  
  7. void smithJonesAnalysis (int data){cout << "Smith";}
  8. void pineappleMangoAnalysis (int data){cout << "Pineapple";}
  9.  
  10. class Analyzer
  11. {
  12. 	enum class AnalysisMethod {SmithJones, PineappleMango};
  13. 	std::map<AnalysisMethod, std::function<void(int)>> m_analysis_map;
  14.  
  15. 	AnalysisMethod stringToMethod (std::string method)
  16. 	{
  17. 		std::transform(method.begin(), method.end(), method.begin(), ::tolower);
  18. 		if (method == "smith-jones method")
  19. 		    return AnalysisMethod::SmithJones;
  20. 		if (method == "pineapple-mango method")
  21. 		    return AnalysisMethod::PineappleMango;
  22.  
  23. 		throw std::runtime_error("Invalid analysis method");
  24. 	}
  25. public:
  26. 	Analyzer()
  27. 	{
  28. 		m_analysis_map[AnalysisMethod::SmithJones] = smithJonesAnalysis;
  29. 		m_analysis_map[AnalysisMethod::PineappleMango] = pineappleMangoAnalysis;
  30. 	}
  31. 	void operator() (std::string method, int data)
  32. 	{
  33. 		AnalysisMethod am = stringToMethod(method);
  34. 		m_analysis_map[am](data);
  35. 	}
  36.  
  37. private:
  38.  
  39.  
  40.  
  41. };
  42.  
  43. int main() {
  44. 	Analyzer a;
  45. 	a("Smith-Jones Method", 0);
  46. 	a("Pineapple-Mango Method", 0);
  47. 	return 0;
  48. }
Success #stdin #stdout 0s 3276KB
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SmithPineapple
https://ideone.com/cMyr0N
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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