CODEWITHSUNDEEP
c++c++17c++20
suresh kumar
suresh kumar

Reputation: 125

How to create a common function to accept std::array of different size?

Lets say I have different classes and each class has its own header variable known at compile time . I am using constexpr std::array<> for this. And each class has variable data which will be known at runtime . Now I need to create a common class Table which will accept headers & data of different classes and create table UI. How can I write a function which accepts std::array of different size ? I am using std::array because it can be used with constexpr

for example ,

using columWidth = int;

class student{
  constexpr std::array<std::pair<std::string_view, columWidth>, 2> mHeader= 
                  {
                      {"Name", 150}, //name column has width 150
                      {"id", 100}    // id column has width 100 
                  };                 //total 2 columns . so array size is 2.
  std::vector<std::pair<std::string, int>> data; 

};
class teacher{
  constexpr std::array<std::pair<std::string_view, columWidth>, 3> mHeader= 
                  {
                      {"Name", 150},
                      {"Degree", 100},
                      {"University", 100},
                  };
 std::vector<std::pair<std::string, int>> data;
};

class Table
{
  public:
      void setHeader(); //this should accept std::array of different size, how ?
      void createTable();
      void changeTableIndex(int index);
  private:
       mHeader ; // what should be the type of this header ? and how to receive and store this header ?
}

I don't want to make the whole Table class as template because it has other member functions as well .

Upvotes: -1

Views: 113

Answers (0)

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