Implementation

In programming, it is not uncommon for a book to be available in multiple editions. For example, the classic textbook on C programming The C Programming Language by Kernighan and Ritchie is available in two editions. The first edition was published in 1978. At that time, C was not standardized. The second edition of the book was published 10 years later and covers the standard (ANSI) version of C. What are the differences between the two editions? To mention a few, the price, the length (number of pages), and the publication date. But there are also many similarities: the authors, the publishers, and the tags/keywords that describe the book are exactly the same. This indicates that creating a new book from scratch is not always the best approach. If we know that there are many similarities between two book editions, we can use cloning and modify only the different parts of the new edition.

Let's see how we can use the Prototype pattern for creating an application that...