to-do-list-challenge.md

Challenge: To-do List ✍️

This challenge is meant to focus on applying knowledge around Ruby's modules.

1. Define a ToDoList class.

2. Mix in Ruby's built-in module Enumerable. Many objects make use of this module such as Array, Hash and Range, however it is not limited to Ruby's use and can be used in ToDoList.

The custom ToDoList class will inherit all methods defined in Enumerable including #map, #find, #count and others that are helpfull when dealing with lists.

However, Enumerable can only be mixed in if the #each method is define within the class. For that please use the following snippet:

# To use Enumerable as a mixin, a class must define #each.
def each
  @items.each {|item| yield(item)}
end

3. Allow an instance of a list to be created, with each item being in the list. A list may be initialized with a few items, passed in as an array:

list = ToDoList.new(['dishes', 'nap', 'laundry', 'vaccum'])

4. Items can be returned with list#items being an attribute reader only.

5. The first item can be returned with list.first.

6. Define ToDoList#<< so that it adds a new item to the front of @items when list << 'sweep' is called.

Further Notes

The structure of the project should be similar to the one below:

.
└── to-do-list
    ├── classes
    │   └── to_do_list.rb
    └── init.rb

This challenge already includes an init.rb file as a starting point since the assignment is the creation of the ToDoList class itself. init.rb may be used to understand if the class works as expected.