lambda

main.dart

void main() {
  const books = [
    const Book('book1', "book1 desc"),
    const Book('book2', "book2 desc")
  ];
  
  print("Books: $books");
  
  books.forEach((book) => print("${book.title}"));
  
  var titles = books.map((book) => book.title).toList();
  print(titles);
  
}

class Book {
  final title;
  final description;
  
   const Book(this.title, this.description);
  
  String toString() {
    return '$title, $description';
  }
}