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Head First Design Patterns Review
At first I didn't understand how they would apply the Head First formula to design patterns. I'd read two head first before this one and I was impressed with those so I took a look and now, not only is it clear how they approached the topic, it's also clear to me that this is the best way to learn design patterns.The Gang of Four book laid out the basics. Here is the pattern, here are some examples. The head first book goes a lot further. They show you good and bad examples of the pattern. They give solid reasoning behind the pattern. It's great.
There are times when I would look at a piece of code and have the author explain to me that it was based on one of the GoF patterns. I would come away thinking, if that's the pattern, then that pattern sucks. It's clear that patterns can be misapplied. So understanding the the how design patterns are applied, and how they are commonly applied wrongly, or to an extreme, is just as important as understanding the basic mechanics of the pattern itself.
The example code is in Java, but I think this is an ideal book for anyone passionate about patterns.
Head First Design Patterns Overview
You're not alone. At any given moment, somewhere in the world someone struggles with the same software design problems you have. You know you don't want to reinvent the wheel (or worse, a flat tire), so you look to Design Patterns--the lessons learned by those who've faced the same problems. With Design Patterns, you get to take advantage of the best practices and experience of others, so that you can spend your time on...something else. Something more challenging. Something more complex. Something more fun. You want to learn about the patterns that matter--why to use them, when to use them, how to use them (and when NOT to use them). But you don't just want to see how patterns look in a book, you want to know how they look "in the wild". In their native environment. In other words, in real world applications. You also want to learn how patterns are used in the Java API, and how to exploit Java's built-in pattern support in your own code. You want to learn the real OO design principles and why everything your boss told you about inheritance might be wrong (and what to do instead).You want to learn how those principles will help the next time you're up a creek without a design pattern. Most importantly, you want to learn the "secret language" of Design Patterns so that you can hold your own with your co-worker (and impress cocktail party guests) when he casually mentions his stunningly clever use of Command, Facade, Proxy, and Factory in between sips of a martini. You'll easily counter with your deep understanding of why Singleton isn't as simple as it sounds, how the Factory is so often misunderstood, or on the real relationship between Decorator, Facade and Adapter. With Head First Design Patterns, you'll avoid the embarrassment of thinking Decorator is something from the "Trading Spaces" show. Best of all, in a way that won't put you to sleep!We think your time is too important (and too short) to spend it struggling with academic texts. If you've read a Head First book, you know what to expect--a visually rich format designed for the way your brain works. Using the latest research in neurobiology, cognitive science, and learning theory, Head First Design Patterns will load patterns into your brain in a way that sticks. In a way that lets you put them to work immediately. In a way that makes you better at solving software design problems, and better at speaking the language of patterns with others on your team.
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