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

# Problem statement

Change your code so that it outputs the following table containing an equal number of rows and columns. The objects in the given array should be represented as labels of the first row and the first column of the table.

Fill each cell with the result that `==` returns for the row and column header objects against that cell. 

## Tip: Break into subtasks

1. Write some code that collects an array of arrays or an array containing all rows. This is a `rows` array with many arrays, each of which holds six results (cells) for each comparison.

2. Add the row label (the object’s representation) to the beginning of the row. Which operator will you use?

3. Make sure each cell is five characters wide (wide enough to hold all data and header labels).

4. Join the cells in each row with the " | " string.

5. Add the table headers row.

Check for the equivalent elements in the array and print out the findings as a table.

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

Challenge 2: Equivalent Objects

Problem statement