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

Posted by prajeshpatel
prajeshpatel
Courses Plus Student 7,216 Points

Checking an array for the existence of a value

Trying to return a boolean values if an array contains name. This is what I've got. Help!

def contains?(name) return todo_items.include?(name) 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)
    return todo_items.include?(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

3 Answers

prajeshpatel
PLUS
prajeshpatel
Courses Plus Student 7,216 Points
prajeshpatel
prajeshpatel
Courses Plus Student 7,216 Points

Hello,

Thanks for the reply. I'm still a bit confused as to why return todo_items.include?(name) would not work. include? method does return a boolean value. Thanks.

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

Because the items in the todo_items array are TodoItem objects; but the thing we search for is the TodoItem.name property in the object. It's nested one level deep. That's why include method won't work

prajeshpatel
PLUS
prajeshpatel
Courses Plus Student 7,216 Points
prajeshpatel
prajeshpatel
Courses Plus Student 7,216 Points

Thank you