Some people have solved your problem. In this chapter, you will learn why (and how) to take advantage of another developer' s experience and wisdom. They encountered the same problem, and also successfully solved these problems. Before the end of this chapter, we will see if the uses and benefits of design patterns, look at some of the key principles of OO design mode and an example to understand how it works. Usage patterns, the best way is: " mode put into his mind, and then you design and existing applications to find where to use them." Past code reuse, now is experience multiplexing.

Head First Design patterns.pdf

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