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Ruby Ruby Loops Build a Simple Contact List Assigning Hash Values From Methods

Posted by Francisco Cunha
Francisco Cunha
3,017 Points

How do I append? Where did we learn that method?

Ruby Loops Contact List Exercise 3

contact.rb 
contact_list = []

contact = {"name" => get_name(), "phone_number" => get_phone_number() }

def get_name
  item = gets.chomp
  return item
end
def get_phone_number
  item = gets.chomp
  return item
end

contact_list << contact

1 Answer

Jacob Moyle
Jacob Moyle
6,150 Points

Hello Francisco,

So it looks like you're already attempting to append with that last line:

contact_list << contact

Where contact_list is your empty array and contact is a hash object.

The << symbol which is also referred to as push, shovel or append; pushes the given object on to the end of this array. This expression returns the array itself, so several appends may be chained together. - Ruby Docs

To give you another example:

foo_array = ["bar"]

foo_array << "Francisco"

print foo_array #=> ["bar", "Francisco"]

I haven't yet worked through the Ruby track in Treehouse so I can't answer your last question. However I can recommend you take a peak at the Ruby docs. I found the syntax for appending by using the browsers search tool (cmmd + f on mac) and typing append.

I hope this is helpful!

Cheers, Jacob

Francisco Cunha
Francisco Cunha
3,017 Points

Hey Jacob, Thanks for the info! Still, I am unable to complete the challenge. Maybe I should use Array.new?