React - useMemo와 Switch 결합

const Form = () => {
    switch(selectedUser){
        case "Admin" : return AdminForm;
                       break;
        case "User" : return UserForm;
                      break;
    }
}
//*AdminForm and UserForm are functional components

//This code is equivalent to 
const Form = useMemo(()=>{
   return { 
      "Admin" : AdminForm,
      "User" : UserForm,
   }[selectedUser];
},[selectedUser]);

/*
Breaking this down, if selectedUser is "Admin", we would return 
   { 
     "Admin" : AdminForm,
     "User" : UserForm,
   }["Admin"];
which is AdminForm.
*/