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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. #include <boost/assign.hpp>
  5. #include <boost/format.hpp>
  6. #include <boost/foreach.hpp>
  7. #include <boost/current_function.hpp>
  8. #include <boost/ptr_container/ptr_vector.hpp>
  9. #include <boost/ptr_container/ptr_container.hpp>
  10.  
  11. namespace jefuty {
  12. 	struct Hoge {
  13. 		Hoge () :x_(false)
  14. 		{ }
  15. 		bool judge (void) const {
  16. 			std::cout << BOOST_CURRENT_FUNCTION << "("<< x_ <<")" << std::endl;
  17. 			return x_;
  18. 		}
  19. 		void modify (void) {
  20. 			std::cout << BOOST_CURRENT_FUNCTION << "("<< x_ <<")->("<< !x_ << ")" << std::endl;
  21. 			x_=!x_;
  22. 		}
  23. 		~Hoge () {
  24. 			std::cout << BOOST_CURRENT_FUNCTION << "("<< x_ <<")" << std::endl;
  25. 		}
  26. 		friend std::ostream & operator<< (std::ostream & os, Hoge const & h);
  27. 	private:
  28. 		bool x_;
  29. 	};
  30. 	std::ostream & operator<< (std::ostream & os, Hoge const & h) {
  31. 		return os << "Hoge{" << h.x_ << "}";
  32. 	}
  33.  
  34. 	bool singleJudge(Hoge const & h) {
  35. 		std::cout << BOOST_CURRENT_FUNCTION << h << std::endl;
  36. 		return h.judge();
  37. 	}
  38. 	void multiProcM(boost::ptr_vector<Hoge, boost::view_clone_allocator>::iterator b,
  39. 					boost::ptr_vector<Hoge, boost::view_clone_allocator>::iterator e) {
  40. 		std::cout << BOOST_CURRENT_FUNCTION << std::endl;
  41. 		singleJudge(*b); // const refを受け取る関数に転送できる
  42. 		b->judge();
  43. 		b->modify();
  44. 	}
  45. 	void multiProcC(boost::ptr_vector<Hoge, boost::view_clone_allocator>::const_iterator b,
  46. 					boost::ptr_vector<Hoge, boost::view_clone_allocator>::const_iterator e) {
  47. 		std::cout << BOOST_CURRENT_FUNCTION << std::endl;
  48. 		singleJudge(*b);
  49. 		b->judge();
  50. 		//b->modify(); // compilation error :)
  51. 	}
  52.  
  53. 	struct ptr_cmp {
  54. 		bool operator() (int const & lhs, int const & rhs) const {
  55. 			return &lhs < &rhs;
  56. 		}
  57. 	};
  58. }
  59.  
  60. int main () {
  61. 	using namespace boost::assign;
  62. 	using namespace jefuty;
  63. 	{
  64. 		std::vector<int> v  = list_of(0)(1)(2)(3)(4)(0);
  65. 		typedef boost::ptr_vector<
  66. 			int, boost::view_clone_allocator
  67. 		> ptrvec;
  68. 		ptrvec v1(&v[0], &v[5]);
  69. 		ptrvec v2;
  70. 		boost::ptr_container::ptr_back_insert_iterator< ptrvec > it(v2);
  71. 		*it = &v[0];
  72. 		*it = &v[1];
  73. 		*it = &v[2];
  74. 		*it = &v[5];
  75.  
  76. 		ptrvec::iterator ib(v2.begin());
  77. 		ptrvec::iterator ie(v2.end());
  78. 		ptrvec v4;
  79. 		std::set_difference(v1.begin(), v1.end(), ib, ie, boost::ptr_container::ptr_back_inserter(v4), ptr_cmp());
  80. 		BOOST_FOREACH(int i, v4) {
  81. 			std::cout << i << ",";
  82. 		}
  83. 		std::cout << std::endl;
  84. 	}
  85. }
  86.  
  87.  
Success #stdin #stdout 0s 2872KB
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3,4,
https://ideone.com/ESkBz
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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