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  1. #include <iostream>
  2. #include <string>
  3. #include <set>
  4.  
  5. struct object
  6. {
  7.     object(const std::string&_object_name):object_name(_object_name){}
  8.     bool operator<(const object&o)const{return object_name<o.object_name;}
  9.     bool operator<(const std::string&str)const{return object_name<str;}
  10.     std::string object_name;
  11.     char some_data[100500];
  12. };
  13.  
  14. class proxy
  15. {
  16. public:
  17. 	proxy( const std::string& name, object* ptr = nullptr ) 
  18. 	: name_(name), ptr_(ptr) {}
  19. 	bool operator<(const proxy& rhs) const { return name_ < rhs.name_; }
  20. 	std::string name() const { return name_; }
  21. private:
  22. 	const std::string name_;
  23. 	object* ptr_;
  24. };
  25.  
  26. int main() {
  27.  
  28. 	proxy one( "john", new object("john") );
  29. 	proxy two( "jane", new object("jane") );
  30.  
  31. 	std::multiset<proxy> ms = { one, two };
  32.  
  33. 	proxy f("jane");
  34.  
  35. 	auto it = ms.find(f);
  36. 	if( it != ms.end() )
  37. 	{
  38. 		std::cout << it->name() << std::endl;
  39. 	}
  40. 	else
  41. 	{
  42. 		std::cout << "not found\n";
  43. 	}
  44.  
  45. 	return 0;
  46. }
Success #stdin #stdout 0s 3628KB
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jane
https://ideone.com/xdlxaI
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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