public Book(string name, string author, DateTime publishingDate, int copies, Enums.Genre genre)
{
Name = name ?? throw new ArgumentNullException(nameof(name));
Author = author ?? throw new ArgumentNullException(nameof(author));
PublishingDate = publishingDate;
Copies = copies;
Genre = genre;
}
public GenreCondition(Enums.Genre genre)
{
this.genre = genre;
}
public IEnumerable <Book> FilterByAuthorAndGenre(Enums.Genre genre, string author)
{
return(_books.Where(x => x.Genre == genre && x.Author.ToLower() == author.ToLower()));
}
public IEnumerable <Book> FilterByGenre(Enums.Genre genre)
{
return(_books.Where(x => x.Genre == genre));
}