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Ruby Ruby Collections Build a Grocery List Program Working with Hashes That Contain Arrays

Posted by Simon Goldman
Simon Goldman
1,028 Points

adding items to a list

not sure how to add it

shopping_list.rb 
grocery_list = { 'title' => 'Grocery List', 'items' => [] }
grocery_item = { 'title' => 'Bread', 'quantity' => 1 }

grocery_item.values_at("items")

1 Answer

Jennifer Nordell
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STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! I'm going to start by giving some hints here and hope that you can figure it out from there.

  • grocery_list contains an empty array at the key items
  • the push method can be used to add a grocery_item to this array
  • the grocery_item array can be referenced by using grocery_list['items']
  • push the grocery_item onto the items array

I hope this helps, but let me know if you're still stuck! :sparkles:

Simon Goldman
Simon Goldman
1,028 Points

grocery_item.push (grocery_list["items"])

still stuck not sure how to write it

Jennifer Nordell
seal-mask
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Oh close! So close but you've got it a bit backward. Take a look:

grocery_list['items'].push(grocery_item)

First, we say we're going to access the items array inside the grocery list. Then we push the grocery_item into the items list. Hope this helps! :sparkles: