Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Ruby Ruby Booleans Build a Simple Todo List Program Returning Boolean Values: Part 2

Rafael Herazo
Rafael Herazo
18,114 Points
Posted by Rafael Herazo
Rafael Herazo
18,114 Points

Hello guys, I've tried several types of code with no success. Can I get a little help?

def contains?(name) index = 0 contains_item = false todo_items.each do |item| if item.name == name contains_item = true

    index += 1
  end
end

end

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 contains?(name)
    index = 0
    contains_item = false
    todo_items.each do |item|
      if item.name == name
        contains_item = true

        index += 1
      end
    end
  end

  def find_index(name)
    index = 0
    found = false
        todo_items.each do |item|
      found = true if item.name == name
      break if found
      index += 1
    end
    if found
      return index
    else
      return nil
    end
  end
end

2 Answers

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

Hi there. You need to return the value of contains_item after the each loop, otherwise your method has a nil as return value.

def contains?(name)
  index = 0
  contains_item = false
  todo_items.each do |item|
    if item.name == name
      contains_item = true

      index += 1
    end
  end
  return contains_item  # return value, very important
end

Also, since you're using the each loop approach for this challenge, the local variable index is serving no purpose here, might as well delete all lines containing it to cleanup the code a little bit.

def contains?(name)
  contains_item = false
  todo_items.each do |item|
    if item.name == name
      contains_item = true
    end
  end
  return contains_item
end

Hope it helps.

Rafael Herazo
Rafael Herazo
18,114 Points
Rafael Herazo
Rafael Herazo
18,114 Points

Thanks a lot, It worked.