You will need Ruby version 1.9.3 or greater. Deselect the checkbox to turn off access for that app.For the purposes of this book, you'll need to have Ruby and RubyGems installed on your machine. Select the checkbox below an app to allow it to access files and folders in that location. Open the Privacy pane for me. On your Mac, choose Apple menu > System Preferences, click Security & Privacy, then click Privacy.Text-to-speech applications need this permission in order. For example: applications that allow people to control their Mac using only voice commands need accessibility access in order to take control of other applications. You will need to ensure you have a plan that allows macOS builds.In part, it uses this name because multiple accessibility applications need access to these features in order to function.The LastPass command line application is an open source project that allows you.If you're technically inclined, you can try rvm or rbenv. If you refer to the official Ruby installation documentation, you'll see that there are 4 choices:LastPass can be installed on Windows, Mac, and Linux operating systems. Therefore, even though your system comes with Ruby, you still need to install Ruby again. Some system Ruby installations, especially on Mac, have limited permissions and will impede your ability to install gems, upgrade Ruby, and perform other development tasks. You should see a print out of the version of Ruby that is installed on your machine. Go to your command line or terminal application and enter ruby -v.
Allow Access To Terminal For Ruby? Code Editor ToUsing a Code EditorYou'll be using a code editor to write code. You should see a print out of the version of RubyGems you are using.Before you begin, make sure to verify that typing in ruby -v in your terminal returns version 1.9.3 or higher. We also recommend installing DevKit from the same site.RubyGems comes with Ruby 1.9.3 and higher, so once you have Ruby installed you can verify from terminal with gem -v. That leaves Mac users with one choice: install with Homebrew.If you are on a Windows machine, we recommend using RubyInstaller to install Ruby. Building from source is also not a good idea for beginners. Don't use rvm or rbenv if you aren't proficient from the command line and can't debug installation issues on your own.![]() If you don't have a preference, this is the option we recommend.Two other great editors that work very similarly to VSCode are Atom and Sublime Text. At the time of this writing, the plugin ecosystem isn't quite as vast and varied as those for Sublime Text and Atom (see below), but it's growing at a robust pace. Its popularity is growing rapidly in the developer community. Most surprisingly, perhaps, is that it comes from Microsoft. ![]() # Constant declarationWhen working with do/end blocks, prefer when the entire code expression fits on one line. In Ruby, constants are denoted with all uppercase letters. # Naming a fileWhen you want to represent a value that will not change in your Ruby program, you define a constant variable, often referred to as a constant. Snake_case formatting is created using all lower case letters and separating words with the underscore character. Comments are used by programmers to leave notes for other programmers or themselves at a later point in time.When you define or initialize a method, variable, or file, you should always use snake_case formatting. These are things you should adopt as quickly as possible, otherwise your code will stand out like a sore thumb.Your text editor's tab function should be set to 2 spaces and indenting should be set to use spaces.When you see the # sign at the beginning of a line, that means anything after it, on the same line, is a comment. Ruby, like all popular programming languages, comes with a rich set of standard libraries that you can use out of the box. Reading DocumentationAs you begin your journey to becoming a programmer, one of the most important habits you'll need to develop is learning how to read documentation. If you'd like some more information about Ruby styling, check out the Ruby style guide. # Class namingThat about covers the most important style conventions to get started. CamelCase (note the capitalization) uses no spaces and capitalizes every word. When naming your classes you will use CamelCase formatting (also called PascalCase). API is an acronym for application programming interface, and is a somewhat overloaded term that can refer to both how applications talk to each other, as well as documentation. Be aware that some developers also refer to documentation as API. These are terms best learned while working with Ruby. Don't worry about the exact definition of classes or methods just yet, all that is coming up later in the book. In some documentation, you'll see the class name being referred to with a :: symbol, like this: Encoding::Converter. This is the Class or Module (again, don't worry about what that is just yet, we will eventually cover it). Class name or Module nameIn the first circle at the top, we see the word "String". The image below is a screenshot for the String class from the official Ruby documentation source, There's a lot to look at, so we've circled the three main areas to pay attention to. But if someone says "What's the Twitter API?", they're talking about the programmatic interface to Twitter's services.In this section we're interested in understanding how to read Ruby documentation, so let's take a look at an example. Methods denoted by :: are considered class methods, while methods denoted by # are considered instance methods.Beyond documentation, don't get caught up with these symbols because they have completely different meanings when executed in Ruby code. MethodsAs a documentation convention, methods are listed out with either a :: or a # to indicate two different kinds of publicly accessible methods. For now, just realize that whether the top heading says String or Encoding::Converter, it's referring to the class or module name and the rest of the page will be documenting that class or module. However, when looking at the method list on the side bar, the :: means something different: it means that the method after the :: is a class method - we'll talk about this more later. For example ActiveRecord::Base is referring to the Base class in the ActiveRecord module, to differentiate from other classes also named Base. For example, from the method list sidebar, we see that there's a #split method for strings, which means that split is an instance method, and we can call that method on any string directly: irb :001 > "world wide web".splitFurther, we can see from the methods sidebar that there are two class methods: ::new and ::try_convert. We can look at the string "world wide web" and directly apply instance methods to it. Example: Instance Methods vs Class MethodsThe big take away from this documentation is that the Public Instance Methods can be applied to any instance of the class (we'll talk about "instances" and "objects" in the OOP section of the book, for now just follow the examples). Clicking one of these methods will link to its section on the page showing its parameters, return values, and some example code that you can copy and paste. Their use here in Ruby documentation is completely different from their use in actual code.The meat of the ruby documentation for the String class describes String's Public Class Methods and Public Instance Methods. Is viper ftp lite for mac legitKnowing how to read a class's methods will help you play around with Ruby code and develop fluency. Irb :001 > b = String.new("blue")For now, these are the three most important things to remember when reading Ruby documentation: the class or module you're looking at, its available class methods, and its available instance methods - and how to use those methods.
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