Download Agile Web Development with Rails (4th edition) by Dave Thomas, David Heinemeier Hansson, Sam Ruby PDF

By Dave Thomas, David Heinemeier Hansson, Sam Ruby

Ruby on Rails is helping you produce fine quality, beautiful-looking internet functions speedy. you consider developing the appliance, and Rails looks after the details.

Tens of hundreds of thousands of builders have used this award-winning e-book to profit Rails. It's a huge, far-reaching instructional and reference that's prompt by means of the Rails middle staff. If you're new to Rails, you'll get step by step suggestions. If you're an skilled developer, this ebook offers you the great, insider details you need.

Rails has advanced through the years, and this e-book has developed in addition to it. We nonetheless begin with a step by step walkthrough of establishing a true program, and in-depth chapters examine the integrated Rails positive aspects. This variation now provides new Ruby and Rails clients additional info at the Ruby language and takes extra time to provide an explanation for key thoughts all through. most sensible practices on tips on how to follow Rails proceed to alter, and this variation retains up. Examples use cookie sponsored periods, HTTP authentication, and lively Record-based varieties, and the publication focuses all through at the correct method to use Rails. also, this variation now displays Ruby 1.9, a brand new unlock of Ruby with enormous sensible and function improvements.

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PrintStackTrace(); accesses the Throwable } that describes the cause. } }); Note that error handling is entirely up to you, subject, of course, to any constraints imposed by the specific error at hand. For example, in case of a connection failure, you could try to reconnect or establish a connection to another remote peer. If you’re thinking that a ChannelFutureListener is a more elaborate version of a callback, you’re correct. In fact, callbacks and Futures are complementary mechanisms; in combination they make up one of the key building blocks of Netty itself.

Echo Server [INFO] [INFO] ------------------------------------------------------------------[INFO] Building Chapter 2. 1:clean (default-clean) @ chapter2 --[INFO] [INFO] ------------------------------------------------------------------[INFO] Building Chapter 2. 6:resources (default-resources) @ echo-client --[INFO] Using 'UTF-8' encoding to copy filtered resources. com> Building and running the Echo server and client [INFO] Changes detected - recompiling the module! 6:testResources (default-testResources) @ echo-client --[INFO] Using 'UTF-8' encoding to copy filtered resources.

For each component, we’ll provide a basic definition and, where appropriate, a simple code example that illustrates its use. 1 Channels A Channel is a basic construct of Java NIO. 9 For now, think of a Channel as a vehicle for incoming (inbound) and outgoing (outbound) data. As such, it can be open or closed, connected or disconnected. 2 Callbacks A callback is simply a method, a reference to which has been provided to another method. This enables the latter to call the former at an appropriate time.

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