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

Michael Criste
Michael Criste
5,045 Points
Posted by Michael Criste
Michael Criste
5,045 Points

I'm stuck on this one as well.

This is similar to the prior question, on which I was also stuck. Please help.

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)
  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

Salman Akram
PLUS
Salman Akram
Courses Plus Student 40,065 Points
Salman Akram
Salman Akram
Courses Plus Student 40,065 Points

Hi Michael,

In the TodoList class, fill in the contains? method so that it returns a boolean value if the todo items array contains an item with the name argument.

I tried this method solutions such as add_item similarly, see below. 

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)
    todo_items.each { |item| return true if item.name == name }
    false
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
William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

Hi, Michael Criste

Salman Akram is right about that. Alternatively, you can make use of the any? method in Array class.

  def contains?(name)
    todo_items.any? {|item| item.name==name}
  end