public void Rent(Book book, Student student)
{
if (book == null)
{
return;
}
book.Rent();
var newPair = new RentPair(book, student);
rentList.Add(newPair);
}
public override bool Equals(object obj)
{
RentPair pair = (RentPair)obj;
return(pair.student.Equals(student) && pair.book.Equals(book));
}
public void DeleteRent(RentPair pair)
{
rentList.Remove(pair);
}