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Why should you learn Ruby?

Programming is Creation

Learning to Program

Learning Modes Don't Believe Everything we say Formatting your Code Reading Error Messages Using Google

Getting Started with IRB!

Terminal Interactive Ruby

Variables

What are Variables?Reusing Variable Names Things on the Right go First Types of Variables and their Usage Quick Quiz on Variables!

Built-in Classes: Numbers

Working with Numbers Exercise 1: Playing with Numbers Exercise 2: Guess the Type?Exercise 3: Finding Modulo Exercise 4: Even or Odd?

Built-in Classes: Strings

Working with Strings Exercise 1: Concatenate Substrings Exercise 2: Padding & Justifying Exercise 3: Guess the Output?Exercise 4: Convert String to Integer Exercise 5: Prepend a String Exercise 6: Remove Characters from String

Built-In Classes: Booleans

True, False and Nil

Built-In Classes: Symbols

Built-In Classes: Arrays

Working with Arrays Things you can do with Arrays!Exercise 1: Guess the index?Exercise 2: Return the index of the Element Exercise 3: Find the length of the array Exercise 4: Replace an element in the array Exercise 5: Extract even elements from array Exercise 6: Combine elements of an array Exercise 7: Reverse the Array Exercise 8: Even Reversed Exercises 9: Delete an Element

Built-In Classes: Hashes

Working with Hashes Things you can do with Hashes!Hash Syntax Confusion (optional)Exercise 1: Guess the Answers!Exercise 2: Flip the keys & values!Exercise 3: Playing with words Exercise 4: Combine the words with its language Exercise 5: Aligning the table columns Exercise 6: Add delimiters to the table

Objects

Object Oriented Programming Objects, Classes and Methods Classes Instances Methods Calling Passing Arguments Listing Methods Predicates Bangs Quick Quiz on Objects!

Writing Methods

Combining Methods

Printing Things

Flow of Execution (optional)

Exercise 1: Greet the person!

Exercise 2: Greet randomly!

Exercise 3: Convert Miles to Kilometers

Exercise 4: Check Leap Year

Writing Classes

Getting Started with Classes!Defining Classes Defining Instance Methods Initializing Objects Instance Variables Attribute Readers Attribute Writers State and Behaviour Interacting Objects Object Scope and Self Quick Quiz on Classes!

Blocks

What are Blocks?Alternative Block Syntaxes Block Arguments Block Return Values Inversion of Control Iterators

Nested Arrays

Working with Nested Arrays Exercise 1: Sum the rows of a matrix Exercise 2: Print the output using Nested Arrays

Get Ready for some more Drill!

Challenge 1: Delete elements from an array Challenge 2: Make it Uppercase Challenge 3: Append one heart next to all array elements Challenge 4: Append hearts equal to the element in array Challenge 5: Join 'em with a newline character!Challenge 6: Align them!

Conditionals

What are Conditionals?Shorthand Syntax Conditionals Return Values Nothingness and the Truth

Operators

Arithmetical Operators Logical Operators Comparison Operators Operators are Methods

Gear up for some Icing on the Cake!

String Interpolation Top-level Object Lots of Other Methods Questions and Commands Alternative Syntax Using the Right Words Writing a new Method Terminology: Arguments vs Parameters Arguments and Parentheses

Advanced Topics

Using Libraries Modules Private Methods Regular Expressions More on Character Classes (Regex)

Ready for a Long Haul?

The Email Class The Mailbox Class The Mailbox Text Formatter The Mailbox Html Formatter Storing our HTML to a File Reading from a CSV File

Your Collateral Apparatus!

Text Editor Ruby Runtime Programming Workflow

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Methods

Methods

An introduction to methods and their importance.

A named block of code that takes input and returns output

Everything in programming is about data, and doing interesting things with it. If you think about Twitter, it essentially takes 140 characters of text (which is data) from their users and displays it to others.

You have already learned about the most important primitive ...

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