Design Patterns in Ruby is a guide to solving real-world problems with Ruby. Taking as it's starting point 14 of the original Gang of Four patterns, the book. Praise for Design Patterns in Ruby Design Patterns in Ruby documents smart Als Download kaufen Learn Game Programming with Ruby (eBook, ePUB). Design Patterns in Ruby - Code samples based on the book with the same title - adomokos/DesignPatterns-Ruby. pull request. Find File. Clone or download.
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All current Exceptional Ruby buyers have received new download links for a combined PDF/ePub/Mobi/HTML download, and future buyers will. Design Patterns In Ruby I just finished reading Design Patterns in Ruby and think it is worth a mention even if you are a dedicated iPhone. The book Dive Into Design Patterns illustrates 22 classic design patterns, and 8 design PHP, Python, Ruby, Swift, or TypeScript), you will easily grasp the essence of the text thanks to the Free Demo Open in browser Download PDF .. PDF, EPUB, MOBI + code examples / Free updates / day money-back guarantee.
Design patterns help you solve commonly-occurring problems in software design. A pattern is not a specific piece of code, but a general concept for solving a particular problem. They are like pre-made blueprints that you can customize to solve a recurring design problem in your code. The book Dive Into Design Patterns illustrates 22 classic design patterns, and 8 design principles that these patterns are based on. Ace interviews and reviews. Questions about patterns come up at almost every programming job interview and every performance review.
DPiR | Companion site to Russ Olsen's book
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Notify me of new comments via email. Notify me of new posts via email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content August 28, February 25, hoangedward. This book was written to help you Understand how to combine refactoring and patterns Improve the design of existing code with pattern-directed refactorings Identify areas of code in need of pattern-directed refactoring Learn why using patterns to improve existing code is better than using patterns early in a new design To achieve these goals, this book features A catalog of 27 refactorings Examples based on real-world code, not the toy stuff Pattern descriptions, including real-world pattern examples A collection of smells i.
Greenfield development, in which a new system or feature is being written from scratch Legacy development, in which you are mostly maintaining a legacy system.
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Design Patterns in Ruby
Post to Cancel. It does not disappoint. If you have read the "gang of four" Design Patterns book you'll recognize most of what Olsen writes about here. But what is amazing and cool is that the book is for rubyists and he demonstrates patterns that are regularly relevant to those of us writing ruby professionally that includes Rails. There are even some ruby-specific patterns at the end. I have been writing ruby since or thereabouts and have written a lot of bad code, and read far more bad code.
Read and understand Olsen's books and do the world a favor by seeing ways to follow clean, elegant, simple and regular patterns that make your ruby beautiful. If you have been programming for any extended period of time, I am sure you have started to see different patterns emerging out of your tasks. You may find you are doing the same thing over and over again, solving problems that you had previously solved in another project.
These patterns can vary from smaller chunks of re-usable code, to manage the sending and receiving of email, all the way to watching over a part of your application and triggering notifications to another part of your application. It's a mixture of the theory behind the design patterns, and then hands-on practice applying it to your Ruby applications. While this book is centered around patterns in Ruby, it is not about teaching you Ruby. There is a brief primer in the beginning, but it comes with the understanding that you already know a little bit about the Ruby language.
Now it's time to check out some of the patterns presented in this book. The book starts off with a chapter devoted to giving background to design patterns and how they can help you build better applications. This chapter isn't a history lesson. The main points of this chapter teach you about awareness. They teach you how to look at your applications, and when and where patterns could best be applied. He gives what he calls Patterns for Patterns while developing: Separate out the things that change from the things that stay the same.
Program to an interface, not an implementation. Prefer composition over inheritance. Delegate, delegate, delegate. You ain't gonna need it. These principles provide us the glasses with which to look through as we assess our code.
You will want to keep these in the back of your mind as you read through the rest of the book. As I stated in the beginning, this book isn't about teaching you Ruby. However, the author does take the second chapter to walk you through the basics. This chapter simply shows you a bit of the syntax, types, and constructs. This intro is very brief, but probably enough to provide a reference throughout the rest of the book if you haven't worked with Ruby before. With this primer into Ruby, the author wraps up the first part of the book and we are now ready to move on to the 14 patterns covered in this book.
One of the strengths of this book is that each chapter poses a different problem and then tackles is using the suggested pattern. This allows you to see it in action, and allows you to get the wheels spinning on how the pattern is used and where else it could be used.
After walking through each of the patterns, we are presented with a nice wrap-up of the pattern. This book is not very long in length, so I won't go into great detail with each of the patterns, as they are covered very well in each chapter.
You need the context to understand how all of the pieces fit together. So, without providing too much information, here is a list of the patterns covered in the book: Template method Strategy Observer Composite Iterator Command Adapter Proxy Decorator Singleton Factory Abstract Factory Builder Interpreter If you are like me, then you will have read these chapters and be left with a desire to instantly start researching, practicing, and applying what you have learned.
But we aren't done quite yet, there is still one more section to go. We now know what the patterns look like. We have seen the examples done solely in Ruby. Everything makes sense. But can we do more?
Now we shift gears to look at patterns found in the Ruby language itself. The last part of this book shows us a few of those patterns, as they can be used extensively while building your application patterns. If you have ever browsed through the Ruby on Rails source code, then you will have seen all of the patterns listed above, as well as the patterns in Ruby.
Here are a few of those: Domain-Specific Languages Meta-programming Convention over configuration Ruby is such an elegant language to work with, and it is due in many parts to these patterns found within the language.
These aren't patterns solely used by Ruby, but the English-like nature of Ruby makes it fun to both read and write with these patterns. While the progression of this book was done very well, starting you off with a discussion of patterns and Ruby, then diving right into the patterns, I did find myself reading this book several times. I didn't read it several times because I didn't understand it, but simply to read with a new outlook on how and where these patterns could be applied, or are currently applied out in the wild.
I find this book not only to be very informative, but also an excellent reference as I look to solve different problems. If you are a programmer, you should definitely read Design Patterns. If you are a Ruby programmer, you should then read Design Patterns in Ruby.
Design Patterns in Ruby is humorous at times and well thought out, covering 14 of the Gang of Four GoF design patterns. As a newer software engineer, it's really valuable to recognize the patterns I've seen and used and to put names to them. I think it's intended audience is intermediate software engineers who are looking for new ways to structure their code and want to learn some terms that help articulate code structure to other engineers. One person found this helpful. See all 41 reviews.
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