Start the main loop and display the widget. TkRoot.newĭefine a widget with the title Hello World Tk.mainloop It provides a cross-platform GUI for Ruby programs. Tk is the standard graphical user interface (GUI) for Ruby. If you don't want to start a new line, you can use print : print "Hello World"
This results in the following console output (including newline): Hello World Then enter the following command: puts "Hello World" hello_world.rbĪlternatively, you can use the Interactive Ruby Shell (IRB) to immediately execute the Ruby statements you previously wrote in the Ruby file. Now you do not need to call the Ruby interpreter explicitly to run your script. Here's how to do that in Unix: $ chmod u+x hello_world.rb Create a file called hello_world.rb which contains: #!/usr/bin/env ruby You can add an interpreter directive (shebang) to your script. Hello World as a Self-Executable File-using Shebang (Unix-like operating systems only) The Ruby interpreter compiles and executes the Ruby file at runtime. Ruby source files don't need to be compiled before being executed. The output will be immediately displayed to the console. Place the following in a file named hello.rb : puts 'Hello World'įrom the command line, type the following command to execute the Ruby code from the source file: $ ruby hello.rb Regular Expressions and Regex Based Operations.Implicit Receivers and Understanding Self.Catching Exceptions with Begin / Rescue.Note: macOS already has Ruby pre-installed, as the OS has a dependency. > sudo apt-get -assume-yes install freetds-dev freetds-bin Install Ruby Version Manager ( rvm) and prerequisitesįor example, install version 2.3.0 of Ruby:Įnsure that the output of the last command indicates you are running version 2.3.0. Click "OK", and then "Extract", to extract the files. You will probably need to create this folder first by clicking "Make New Folder".Ĭ. Click the "." button, and select "C:\DevKit".
You will be asked where to extract the files.ī. rbw files with this Ruby installation.ĭownload DevKit from the RubyInstaller pageĪ.
On the install settings screen, select the check boxes next to both Add Ruby executables to your PATH and associate. Select your language, and agree to the terms.Ĭ.
Double-click the file to start the installer.ī. For example if you are on a 64-bit machine, download the Ruby 2.1.6 (圆4) installer.Ī. Go the Ruby download page and download the appropriate 2.1.x installer. For new ruby users, we recommend you use Ruby 2.2.X installers, which provide a stable language and an extensive list of packages (gems) that are compatible and updated. If your machine does not have Ruby, install it. The Ruby Driver uses the TDS protocol, which is enabled by default in SQL Server and Azure SQL Database. You will need to configure your development environment with the prerequisites in order to develop an application using the Ruby Driver for SQL Server.
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