By Peter Cooper
Ruby might be most sensible often called the engine powering the highly well known Ruby on Rails net framework. even if, it's an incredibly strong and flexible programming language in its personal correct. It specializes in simplicity and gives an absolutely object-oriented environment.
Beginning Ruby is a completely modern advisor for all types of reader eager to examine Ruby, from amateur programmers to net builders to Ruby newbies. It begins via explaining the rules at the back of object-oriented programming and inside a couple of chapters builds towards making a real Ruby application.
The e-book then explains key Ruby ideas, comparable to periods and gadgets; tasks, modules, and libraries; and different features of Ruby equivalent to database entry. moreover, Ruby on Rails is roofed intensive, and the books appendixes offer crucial reference details in addition to a primer for knowledgeable programmers.
Read or Download Beginning Ruby. From Novice to Pro PDF
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Ruby might be top referred to as the engine powering the highly well known Ruby on Rails net framework. even if, it's a really robust and flexible programming language in its personal correct. It makes a speciality of simplicity and gives a completely object-oriented environment.
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Extra resources for Beginning Ruby. From Novice to Pro
Think of objects as real-life objects. A class is the classification, whereas an object is the actual object or “thing” itself. qxd 34 3/1/07 4:38 AM Page 34 CHAPTER 2 ■ PROGRAMMING == JOY: A WHISTLE-STOP TOUR OF RUBY AND OBJECT ORIENTATION • Object orientation: Object orientation is the approach of using classes and objects to model real-world concepts in a programming language, such as Ruby. • Variable: In Ruby, a variable is a placeholder for a single object, which may be a number, string, list, or an instance of a class that you have defined, such as, in this chapter, a Pet.
Is placed after the method name. Although you can follow a method call directly with the data associated with that method, this is only a shortcut, and becomes cumbersome when you want to tie a number of methods together (as you’ll do later in this chapter). ", which is only different because of two shortcuts: 1. puts to refer to it. 2. puts takes only one argument (that is, a discrete item of data being passed to a method—also often called a parameter) and is rarely followed by other methods or logic, so parentheses are not strictly necessary.
Installation is complete when the installation program says “Installation Complete” and the “Next” button is clickable. Click the “Next” button, then click “Finish” to exit the installation program. If Ruby installed correctly, congratulations! Go to the “Start” menu and then the “Programs” or “All Programs” menu. There should be a Ruby program group that contains icons for FreeRIDE, SciTE, an uninstaller, and other bits and pieces. To test that your Ruby installation works correctly for Chapter 2, you need to load the program listed as “fxri – Interactive Ruby Help & Console,” so click this entry and wait for the program to load.