Learn the basics of Ruby with hands-on practice.

Become a Ruby Professional

Do you want to be an interpreted language geek? Are you tired of getting entangled in the dense syntaxes? Does it irritate you to compile your code to machine language first? Are you looking for an easy-to-use scripting language? Well, Ruby is the best pick for you then!
This introductory module will be providing you with hands-on practice with the support of a bunch of interactive illustrations, exercises, and the integral topics of variables, built-in classes, objects, conditionals, blocks, and much more!

Learn Ruby from Scratch

## Class methods

Like class variables, methods can be defined at the class level. Such methods are called **class methods**.

- Class methods are defined by prepending the method name with `self.`. For example, in the following code snippet, `greet` is a class method.

```ruby
class Person
 def self.greet()
  puts "Hello World!"
 end
end
```

- The `self` keyword refers to the class itself. So, to call the class method, it has to be invoked on the class and not on a class instance. For example:

# Class methods

Like class variables, methods can be defined at the class level. Such methods are called **class methods**.

- Class methods are defined by prepending the method name with `self.`. For example, in the following code snippet, `greet` is a class method.

```ruby
class Person
 def self.greet()
  puts "Hello World!"
 end
end
```

- The `self` keyword refers to the class itself. So, to call the class method, it has to be invoked on the class and not on a class instance. For example:

Practice using class variables and class methods.

The Big Picture

Variables

Built-in Class: Numeric

Built-in Class: String

Built-in Classes: TrueClass, FalseClass and NILClass

Built-in Class: Symbol

Built-in Class: Array

Built-in Class: Hash

Objects

Methods

Operators are Methods

Blocks

Get Ready for some more Drill!

Conditionals

Coding Challenge: Truthiness and Equivalence

Lets run another lap with hashes

Writing Classes

Mini project 1

Spotlight on Things Unremarked

Advanced Topics

Your Toolkit!

Appendix: Mailbox Project Prerequisite

Conclusion

Exercise 2: On Class Methods

Class methods