Springer - Ruby On Rails For PHP And Java Developers

Introduction

Ruby is an interpreted scripting language for object-oriented programming. Interpretive implies that a Ruby application is run without first compiling the application. Variables in Ruby do not have a type; a Ruby variable may contain data of any type. Variables in Ruby may be used without any variable declarations. Ruby being an object oriented language has features such as classes, inheritance and methods. Everything in Ruby is an object including methods, strings, floats and integers. A Ruby script is stored in a file with the .rb extension and run with the Ruby command. First, we need to install Ruby.