std::type_info::operators

1	`bool` `operator==(` `const` `type_info& rhs )` `const;`

1	`bool` `operator!=(` `const` `type_info& rhs )` `const;`

Checks if the objects refer to the same types.

Parameters

rhs

another type information object to compare to

Return value

true if the comparison operation holds true, false otherwise.

Example

#include <iostream>
#include <typeinfo>
#include <string>
#include <utility>
  
class person
{
  public:
  
   person(std::string&& n) : _name(n) {}
   virtual const std::string& name() const{ return _name; }
  
  private:
  
    std::string _name;
};
  
class employee : public person
{
   public:
  
     employee(std::string&& n, std::string&& p) :
         person(std::move(n)), _profession(std::move(p)) {}
  
     const std::string& profession() const { return _profession; }
  
   private:
  
     std::string _profession;
};
  
void somefunc(const person& p)
{
   if(typeid(employee) == typeid(p))
   {
      std::cout << p.name() << " is an employee ";
      auto& emp = dynamic_cast<const employee&>(p);
      std::cout << "who works in " << emp.profession() << '\n';
   }
}
  
int main()
{
   employee paul("Paul","Economics");
   somefunc(paul);
}

Output:

1	`Paul is an employee who works in Economics`

std::type_info::operators

Parameters

Return value

Example

See also