Ruby Programming

Audience

IT professionals who need to write or maintain scripts in Ruby and projects based on Ruby.

Prerequisites

No pre-requisites required if attending all 5 days. If attending the last 3 days, delegates should have prior experience with programming in another language.

Course Objectives

Delegates will gain Knowledge of Ruby to write, modify, maintain and understand Ruby scripts.Course Content

Learn to Program: Using Ruby (Facets of Ruby)

The first 2 days provide non-programmers an Introduction to Programming using Ruby.

• Getting Started

• Numbers

• Letters

• Variables and Assignment

• Mixing It Up

• More About Methods

• Flow Control

• Arrays and Iterators

• Writing Your Own Methods

• Classes

• Blocks and Procs

Ruby Programming

The final 3 days build upon the first 2, providing delegates with practical Ruby programming knowledge and skills.

Introduction

• What is Ruby

• What is it used for

• Installing Ruby?

• Ruby Basics - objects, regular expressions, arrays, hashes, Object Orientation

Language Elements

• Variables and constants

• Operators

• Assignments

• Integer, float and string formats

• Single and double quotes

• Here documents

Control Structures

• Blocks and if statement

• Boolean and range operators

• Conditionals - if, unless, case

• Loops - while, for in, until

• break, next, retry and redo

Classess And Objects

• Objects, classes and methods

• Constructors and attributes

• Instance and class variables

• Local and global variables

• Class and object methods

• Including external files - load and require

Input And Output

• Opening and closing files

• Reading from and writing to files

Arrays And Hashes 

• Arrays and hashes

• Building an array

• The %w shortcut

• Nesting arrays

• Hash keys

• Iterators

Object Orientation

• Inheritance

• Base classes and subclasses

• What's inherited

• Overriding

• Abstract classes

• Polymorphism

• Multiple Inheritances

• Class structure

• Visibility

Classes And Object Scoping

• Public, private and protected visibility

• Singletons and defs

• Inheritance mixins

• Destructors and garbage collection

• Namespaces and modules

• Hooks

• Freezing objects

Object OrientationTechniqus

• Clusters of classes

• Programming and method standards

• Formal Methods

• Unified Modelling Language (UML)

• Views

Strings And Regular Expressions

• Meta Characters

• Anchors, literals, character groups and counts

• Matching in Ruby

• Modifiers i, o, x and m

• Pattern matching variables

Special Variables And Pseudo-Variables

• ARGV and $0

• Special variables

• Environment variables

• Pseudo-variables

• Reserved words in Ruby

Exceptions

• begin and end

• Raise and rescue

• Throw and catch