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Ruby Ruby Booleans Build a Simple Todo List Program Finding Array Items

Posted by Sara Brothers
Sara Brothers
7,341 Points

Ruby Booleans todo list challenge

First workspace is not working. Secondly I don't understand the question

todo_list.rb 
class TodoList
  attr_reader :name, :todo_items

  def initialize(name)
    @name = name
    @todo_items = []
  end

  def add_item(name)
    todo_items.push(TodoItem.new(name))
  end

  def find_index(name)
    index = 0
    found = false
  end

end

1 Answer

Tom Sager
Tom Sager
18,987 Points
Tom Sager
Tom Sager
18,987 Points

<p>First, I have the same problem with the workspace. It works on other lessons, but not on this one.</p> <p>I am not sure what you don't understand, but let me try to describe things to you.</p> <p>A TodoList instance has a name and an array of TodoItems. So if we create a new list like this:

mytodolist = TodoList.new('my list')

We can get its contents:

mytodolist.name()        # returns 'my list'
mytodolist.todo_items()  # returns [] - an empty array

Then we can add a couple of todo items to this list:

mytodolist.add_item("make breakfast")
mytodolist.add_item("brush my teeth")

Now the items in the list are:

mytodolist.todo_items()  # returns an array with two items:
    [ "make breakfast", false ]
    [ "brush my teeth", false ]

<p>The list of items has already been created for the challenge. The answer involves iterating over each of the items to see if its name matches the given string (hint: 'each'). Because find_item is an instance variable, mytodolist.find_item 'automatically' references the correct array of TodoItems.</p>

<p>Does this help make it clear?</p>

<p>Note that the answer in the lesson uses 'each' with an index that is initiated outside the loop. An additional method 'with_index' makes the code a lot cleaner:</p>

todo_items.each.with_index do |item, index|
    ...
end