virtual int  Type() const

//--- example for CArrayDouble::Type()
#include <Arrays\ArrayDouble.mqh>
//---
void OnStart()
  {
   CArrayDouble *array=new CArrayDouble;
   //---
   if(array==NULL)
     {
      printf("Object create error");
      return;
     }
   //--- get array type
   int type=array.Type();
   //--- delete array
   delete array;
  }