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  1.  
  2. class ElemNotFound {};
  3. template <class ElemType, class IndexType> 
  4. class IContainer
  5. {
  6. public:
  7.     virtual ~IContainer() {};
  8.     virtual const ElemType& GetElem( const IndexType& index ) const = 0;
  9.     virtual void PutElem( const IndexType& index, const ElemType& elem ) = 0;
  10. };
  11.  
  12. #include <map>
  13.  
  14. template <class ElemType, class IndexType>
  15. class Container: public IContainer <ElemType, IndexType>
  16. {
  17. private:
  18.     typedef  std::map<IndexType, ElemType> CMap;
  19.     CMap myMap;
  20.  
  21. public:
  22.     inline const ElemType& GetElem( const IndexType& index ) const 
  23.     {
  24.         auto it = myMap.find(index); // line 1
  25.  
  26.         if (it == myMap.end()) {
  27.             throw ElemNotFound();
  28.         }
  29.  
  30.         return it->second;
  31.      }
  32.  
  33.      inline void PutElem( const IndexType& index, const ElemType& elem )
  34.      {
  35.          myMap.insert(std::make_pair(index, elem));  // line 2
  36.      }
  37. };
  38.  
  39. #include <string>
  40.  
  41. int main()
  42. {
  43.     Container <std::string, int> c;
  44.     c.PutElem(1, "as");
  45.     c.PutElem(2, "G");
  46.     c.GetElem(2);
  47. }
Success #stdin #stdout 0s 3472KB
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https://ideone.com/reCEgS
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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