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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <iterator>
  5. using namespace std;
  6.  
  7. template<typename T>
  8. struct list {
  9. 	vector<T> data;
  10.  
  11. 	template<typename F>
  12. 	list<T> filter(F f) const {
  13. 		vector<T> result;
  14. 		copy_if(begin(data), end(data), back_inserter(result), f);
  15. 		return { result };
  16. 	}
  17.  
  18. 	template<typename F>
  19. 	list<T> map(F f) const {
  20. 		vector<T> result(data.size());
  21. 		transform(begin(data), end(data), begin(result), f);
  22. 		return { result };
  23. 	}
  24.  
  25. 	template<typename F>
  26. 	void each(F f) const {
  27. 		for_each(begin(data), end(data), f);
  28. 	}
  29. };
  30.  
  31. int main() {
  32. 	(list<int>{{ 1, 2, 3, 4, 5, 6, 2016 }})
  33. 		.filter([](auto x){ return x % 2; })
  34. 		.map([](auto x){ return x*x; })
  35. 		.each([](auto x){ cout << x << " "; });
  36. 	return 0;
  37. }
Success #stdin #stdout 0s 3468KB
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https://ideone.com/h67myx
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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