1_die

Week 5 Home

U2.W5: Die Class 1: Numeric

Learning Objectives

• Break down problems into implementable pseudocode
• Implement a basic Ruby class and identify when to use instance variables
• Use if/else statements, string methods, while/until loops, Enumerable#each methods
• Find and use built-in Ruby methods to solve challenges
• Explain how instance variables and methods represent the characteristics and actions of an object

Background

Before starting this challenge, you will want to read a bit about classes and ruby objects. Try these: Writing our own Class in Ruby, Ruby Classes and Objects, or read about classes in The Well-Grounded Rubyist (Book). You definitely want to research this before you try it. Classes are a different thing altogether and may be difficult to understand at first. Don't worry, you'll get lots of practice this week! You may also want to get a head-start on Object-Oriented Design by reading Practical Object Oriented Design in Ruby (Book)(affectionately known as POODR).

Implement a basic Die class which can be initialized with some number of sides. We can then roll the die, returning a random number. It should work like this:

die = Die.new(6)
die.sides # returns 6
die.roll # returns a random number between 1 and 6

If we pass Die.new a number less than 1, we should raise an ArgumentError. This is done using the raise keyword. See the ArgumentError documentation for how to do this.

Use the Ruby Docs to see how to return a random number.

Directions

1. Run the Rspec tests, and then translate at least 3 of the tests into Driver Test Code and include it in the driver code section. If the tests are failing to catch a problem, try writing your own driver test code for it.
2. Pseudocode
3. Initial Solution
4. Refactored Solution
5. Reflect
6. Sync your changes (push your solution) to Github
7. Review