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  1. #include <iostream>
  2. #include <array>
  3.  
  4. using namespace std;
  5.  
  6. template <typename T>
  7. class RefArray
  8. {
  9.    	public:
  10.    	  RefArray(T* data,
  11.    	          std::size_t offset,
  12.    	          std::size_t size):
  13.    	     m_data(data),
  14.    	     m_offset(offset),
  15.    	     m_size(size)
  16.    	  {
  17.    	  }
  18.  
  19.    	  std::size_t size()const{ return m_size; }
  20.    	  std::size_t offset()const{ return m_offset; }
  21.  
  22.    	  T& operator[](std::size_t index)
  23.    	  {
  24.    	  	return *(m_data+m_offset+index);
  25.    	  }
  26.  
  27.    	  const T& operator[](std::size_t index)const
  28.    	  {
  29.    	  	return *(m_data+m_offset+index);
  30.    	  }  
  31.  
  32.    	  T* begin()
  33.    	  {
  34.    	     return m_data+m_offset;
  35.    	  }
  36.  
  37.    	  T* end()
  38.    	  {
  39.    	      return  m_data+m_offset+m_size;
  40.    	  }
  41.  
  42.     private:
  43.       T* m_data;
  44.       std::size_t m_offset;
  45.       std::size_t m_size;
  46. };
  47.  
  48. int main() 
  49. {
  50. 	int a[10]={0,1,2,3,4,5,6,7,8,9};
  51.  
  52. 	RefArray<int> ra(a,5,5);
  53.  
  54. 	for(int e:ra)
  55. 	   std::cout<<e<< std::endl;  
  56.  
  57. 	return 0;
  58. }
Success #stdin #stdout 0s 16064KB
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https://ideone.com/6zajVm
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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