fork(1) download
copy 
  1. 	#include <iostream>
  2. 	#include <string>
  3. 	#include <set>
  4.  
  5. 	struct compare {
  6. 	    bool operator() (const std::string& a, const std::string& b) const{
  7. 	        if (a.size() < b.size())
  8. 	            return true;
  9. 	        if (a.size() == b.size() && a.compare(b) < 0)
  10. 	            return true;
  11. 	        return false;
  12. 	    }
  13. 	};
  14.  
  15. 	template<typename T>
  16. 	void print(const T& t){
  17. 	    for(auto& it : t)
  18. 	        std::cout << it << "\n";
  19. 	}
  20.  
  21. 	template<typename T>
  22. 	void insert(T& t, const char* value)
  23. 	{
  24. 		auto result = t.insert(value);
  25. 		std::cout << "After inserting " << value << ". inserted? " << result.second << "\n";
  26. 		print(t);
  27. 		std::cout << "\n";
  28. 	}
  29.  
  30. 	int main() {    
  31. 	    std::set<std::string, compare> c;
  32.  
  33. 		insert(c, "Apple");
  34. 		insert(c, "Lemon");
  35. 		insert(c, "Fig");
  36. 		insert(c, "Kumquat");
  37.  
  38. 	    print(c);
  39.  
  40. 	    return 0;
  41. 	}
  42.  
Success #stdin #stdout 0s 3276KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
After inserting Apple. inserted? 1
Apple

After inserting Lemon. inserted? 1
Apple
Lemon

After inserting Fig. inserted? 1
Fig
Apple
Lemon

After inserting Kumquat. inserted? 1
Fig
Apple
Lemon
Kumquat

Fig
Apple
Lemon
Kumquat
https://ideone.com/Vs5p0i
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!