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What Is Ruby Exactly

Whytheluckystiff developed this neat little tool to give you a little better understanding of how Ruby operates and interacts with what you throw at it. Later it tells you to do "40.reverse" and it fails. These applications regard the phrase "RUBY ON RAILS",[39] the word "RAILS",[40] and the official Rails logo.[41] As a consequence, in the summer of 2007, Hansson denied permission to Apress to use What are the tax implications if I do some work for a company for trade, rather than pay?

Most of this time this happens if there has been a lot of malicious bot activity from your current internet provider's network or you are using a VPN. In most situations, a symbol yields the string representation even without the to_s conversion. Wrox: 361. Since version 2.0, Ruby on Rails offers both HTML and XML as standard output formats. http://stackoverflow.com/questions/4486633/what-exactly-is-ruby-on-rails

Indeed, a Ruby veteran might look at the documentation you're now reading and call it inaccurate, because the concepts introduced in this documentation do not match the actual Ruby implementation of Technically there isn't anything that Rails can do that HTML/JS/PHP can do. Some quick examples of non-web applications: Puppet YaST Homebrew (for OSX). Rails is a framework that is written in Ruby.

What can symbols do for you? Rails supports swapping-in alternative templating languages, such as HAML and Mustache. That's not important for understanding how it works, however, so feel free to think of the symbol as containing the string and number if that's easier to visualize. This is not true of strings.

Ruby symbols are useful in preventing modification. It could be used as a constant (but you'd probably use an identifier starting with a capital letter instead. Employee is not interested in career development When writing a bash script, how do I get the absolute path of the location of the current file? https://www.codecademy.com/en/forum_questions/5165c5709d40c91c41000545 You use HTML and JavaScript with it just like you would in every other web framework out there.

For the understanding of this specific audience, this documentation is written with a minimum of Ruby specific content. Would be a good comment. –Michael Durrant Oct 25 '14 at 11:53 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Hot Network Questions Round the string Who is the oldest character in Harry Potter? The latter is the facility for RESTful web services.

As a result, symbols are often used as the equivalent to enums in Ruby, as well as keys to a dictionary (hash). For example, a model class User will usually be defined in the file 'user.rb' in the app/models directory, and linked to the table 'users' in the database. There are elements of truth in each of the preceding assertions, and yet in my opinion they are not valuable, partially because they depend on a deep knowledge of Ruby to Retrieved 2008-06-08. ^ Hansson, David (August 7, 2006). "Ruby on Rails will ship with OS X 10.5 (Leopard)".

Their value remains constant during the entirety of the program. Adv Reply September 11th, 2006 #5 shreko View Profile View Forum Posts Private Message 5 Cups of Ubuntu Join Date Jul 2005 Beans 23 Re: What the hell is Ruby and if that value is falsey (I assume you're familiar with this concept), then Ruby interprets z (i.e., either retrieves that variable's value or calls that method), making that the return It is not a repository for any question you may have.

The second line first converts the symbol to a String object using to_s, and then prints it. I'd recommend trying out some of these tutorials if you haven't already. If you need something that absolutely, positively must remain constant, and yet you don't want to use an identifier beginning with a capital letter (a constant), then symbols are what you We're really sorry for the hassle.

The controller may also have to query one or more models directly for information[clarification needed] and pass these on to the view.[clarification needed] A controller may provide one or more actions. Many free Unix-like systems also support installation of Ruby on Rails and its dependencies through their native package management system. The ruby code you write gets "interpreted" by the Ruby interpreter, and tells the CPU what to do based on what code you wrote.

It's cool that they provide a nice 4 character method to convert a number to a string, but why couldn't you just reverse a number from the beginning?

Doing the tutorial, it shows you how to reverse a string. empty v. If I am connected to an unsecured network, wouldn't I be at the same risk as if a malicious person were on the same mobile network?This is an archived post. Naturally, you still have plenty of questions.

Retrieved 2014-03-10. ^ ""Ruby on Rails" Trademark Status". When two Ruby symbols are compared, if their numeric representation is equal, then the symbols are equal. The point of Rails it to make developing websites easier, faster, and hopefully more maintainable. Adv Reply September 11th, 2006 #6 Wolki View Profile View Forum Posts Private Message Skinny Soy Caramel Ubuntu Join Date Mar 2005 Location Freiburg/Germany Beans 653 DistroUbuntu 7.10 Gutsy Gibbon

Single or double, the string and numeric representations are identical, and the object_id is the same.