public static void PrintSortedBooks(Catalog catalog, BookSorterByYearDelegate bookSorter, int year)
{
foreach (var book in catalog.GetBooksByYear(bookSorter, year))
{
Console.WriteLine(book);
}
}
public IEnumerable <Book> GetBooksByYear(BookSorterByYearDelegate bookSorter, int year) => _books.Where(b => bookSorter(b, year));