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Ruby Ruby Collections Ruby Hashes Working with Hash Values

Alphonse Cuccurullo
Alphonse Cuccurullo
2,513 Points
Posted by Alphonse Cuccurullo
Alphonse Cuccurullo
2,513 Points

Using the values_at method, create an array called grocery_list with the value of the grocery_item hash at the "item" ke

Someone please help im so confused. =(

2 Answers

Ethan Weeks
Ethan Weeks
15,352 Points
Ethan Weeks
Ethan Weeks
15,352 Points 
grocery_item = { "item" => "Bread", "quantity" => 1, "brand" => "Treehouse Bread Company" }

# checking if the hash grocery_item has a value of bread
if grocery_item.has_value?("Bread")

   # if the hash grocery_item does have bread 
   # make a new key named food and set it to true
   grocery_item["food"] = true

end

#value stored in the array will be the value of the item in grocery_item hash

grocery_list = [grocery_item.values_at('item')]

#grocery_list = ["Bread"]
Alphonse Cuccurullo
Alphonse Cuccurullo
2,513 Points
Alphonse Cuccurullo
Alphonse Cuccurullo
2,513 Points

but what about the values_at method how i use that?

Andrew Patterson
Andrew Patterson
3,075 Points
Andrew Patterson
Andrew Patterson
3,075 Points

Hey Alphonse,

The second the last line of Ethan's code uses the values_at method to return the value of the key 'item', which in this case is "Bread". The hash structure is like this:

"key" => "value"

Check out the Ruby Docs here for more on how hashes and their methods work: http://ruby-doc.org/core-2.2.0/Hash.html