By Cloves Carneiro Jr., Rida Al Barazi, Adam Gamble
Starting Rails four is a publication that may consultant you from by no means having programmed with Ruby, to having a Rails software equipped and deployed to the net. You’ll easy methods to mix the entire parts of Rails to strengthen your personal net functions. you are going to use try pushed improvement to ensure your program works precisely such as you expect.
You will how you can use Git for resource keep an eye on and most sensible perform ideas to create functions like a professional. crucial, and often-missed, info on checking out and studying to application with Ruby also are covered.
This e-book is easily suited to a person with little to no Ruby or Rails adventure, or potentially even a person without adventure constructing net purposes in any respect. starting Rails four does think a easy familiarity with the net and commonplace net phrases, yet doesn’t require you to be knowledgeable of those. This ebook will springboard your trip into net program improvement, and exhibit you ways a lot enjoyable development internet functions with Ruby on Rails can be.
* discover ways to create Rails functions from the ground up
* research the fundamentals of the Ruby programming language
* thoroughly up-to-date for Rails four, together with new details on rapid hyperlinks, etc.
Beginning Rails four lightly publications you thru designing your program, writing checks for the appliance, after which writing the code to make your software paintings as anticipated.
Read Online or Download Beginning Rails 4 (3rd Edition) PDF
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Extra info for Beginning Rails 4 (3rd Edition)
Example text
This is a similar scenario as in Figure 3–2, but the actual resource in memory is copied during the cloning operation. Using Object Copying in the Cocoa Touch Framework The Cocoa Touch framework provides a protocol for any NSObject descendent to implement deep copying. Any subclass of NSObject needs to implement the NSCopying protocol and its method, (id)copyWithZone:(NSZone *)zone. NSObject has an instance method called (id)copy. The default copy method calls [self copyWithZone:nil]. For subclasses that adopt the NSCopying protocol, that method needs to be implemented, otherwise it will raise an exception.
It allows the user to undo and redo scribbling. Designing the Look-and-Feel Do you remember the last time you were asked or you decided to make last-minute changes on the user interface and/or user experience for your app? Moments like that aren’t fun. So a better practice, at least in iOS development here, is to design the entire look-and-feel as well as user experiences that are close to the final product as early as possible. I call it Look-and-Feel–driven design. We have heard about data-driven design, event-driven design, and test-driven design.
Draw it on the screen), the data structure needs to be highly organized and predictable. “What” Can Be Drawn Onscreen? Before we think of any possible data structure that can be used to hold the touch data, let’s take a look at how we should define a stroke. If the user first touches the screen and then moves his or her finger, it creates a stroke. However, if the finger doesn’t move but finishes the touch at the same location where it started, that should be considered a dot. These are illustrated in Figure 2–6.