It’s effortless to put in writing “correct” Ruby code. yet it’s a ways tougher to realize the fluency had to write nice Ruby code. to do this, you want to transcend syntax and soak up the “Ruby method” of considering and challenge fixing. In Eloquent Ruby, Russ Olsen is helping you know Ruby like real Rubyists do—so you could leverage its large, fantastic energy. Olsen attracts on years of expertise internalizing the Ruby tradition and educating Ruby to different programmers. He publications you to the “Ah Ha!” moments while it all of sudden turns into transparent why Ruby works how it does and the way you could reap the benefits of its special approach. Eloquent Ruby starts off small, answering tactical questions inquisitive about a unmarried assertion, approach, attempt, or computer virus. You’ll how to write code that really seems like Ruby (not Java) why Ruby has such a lot of regulate buildings how one can use strings, expressions, and logos and what dynamic typing is basically strong for.
Read Online or Download Eloquent Ruby PDF
Best web programming books
Approximately This Book
Demystify the quandaries of internet improvement utilizing Play Framework
try out and debug your apps by utilizing Play's in-built trying out framework
grasp the center positive factors of Scala via a entire assurance of code and examples for various scenarios
Who This ebook Is For
This e-book is meant for these builders who're prepared to grasp the interior workings of Play Framework to successfully construct and installation web-related apps.
What you'll Learn
customise your framework to deal with the explicit requisites of an software
improve responsive, trustworthy, and hugely scalable purposes utilizing Play Framework
construct and customise Play Framework plugins that may be utilized in a number of Play functions
get yourself up to speed with third-party APIs to prevent rewriting present code
achieve an perception into some of the features of checking out and debugging in Play to effectively attempt your apps
Get to understand all concerning the thoughts of WebSockets and Actors to procedure messages in response to events
Play Framework is an open resource internet program framework that's written in Java and Scala. It follows the Model-View-Controller architectural development and allows the consumer to hire Scala for program improvement, whereas preserving key houses and lines of Play Framework intact.
Starting off by means of construction a easy software with minimum positive factors, you get a close perception into dealing with facts transactions and designing types in Play. subsequent, you enterprise into the recommendations of Actors and WebSockets, the method of manipulating facts streams, and trying out and debugging an program in Play. eventually, you achieve an perception into extending the framework via writing customized modules or plugins in Play. each one bankruptcy has a troubleshooting part that is helping you out through discussing the factors of, and recommendations to, a few quite often confronted concerns.
Arrange for Microsoft examination 70-486 — and support display your real-world mastery of constructing ASP. web MVC-based strategies. Designed for knowledgeable builders able to enhance their prestige, examination Ref specializes in the critical-thinking and decision-making acumen wanted for achievement on the Microsoft expert point.
DotNetNuke writer Shaun Walker leads this superlative writer workforce of MVPs whereas supplying the newest replace of a bestseller. they provide entire assurance of the key revisions to DotNetNuke five, reminiscent of extra granular management, widgets, XHTML compliance, superior social networking, workflow, and higher content material administration.
Additional info for Eloquent Ruby
Remember, the Ruby convention is that an exclamation point at the end of a method name indicates that the method is the dangerous or surprising version of a pair of methods. Since making a modified copy of a collection seems very safe while changing a collection in place can be a bit dicey, we have sort and sort!. -less methods in Ruby’s collection classes, methods that will cheerfully change your collection in place as an intrinsic part of what they do.
Sorts the array in place. Don’t, however, get the idea that only methods with names ending in ! will change your collection. Remember, the Ruby convention is that an exclamation point at the end of a method name indicates that the method is the dangerous or surprising version of a pair of methods. Since making a modified copy of a collection seems very safe while changing a collection in place can be a bit dicey, we have sort and sort!. -less methods in Ruby’s collection classes, methods that will cheerfully change your collection in place as an intrinsic part of what they do.
After all, the value of flag may have been the result of a call to defined?. The idea behind defined? ( doc ) The rub is that although defined? does indeed return a boolean, it never, ever returns true or false. Instead, defined? ( doc ) will return "local-variable". On the other hand, if the thing passed to defined? is not defined, then defined? will return nil. —like many Ruby methods—works in a boolean context, as long as you don’t explicitly ask if it returns true or false. It’s also possible to go wrong by taking nil for granted.
Eloquent Ruby by Olson