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Ruby Ruby Collections Ruby Hashes Working with Hash Values

Michael Criste
Michael Criste
5,045 Points

I'm not sure I quite understand what it is they're looking for.

Please see my code, including that which is commented out. Not sure how this should be structured.

hash.rb
grocery_item = { "item" => "Bread", "quantity" => 1, "brand" => "Treehouse Bread Company" }

grocery_item["food"] = true if grocery_item.has_value?("Bread")

grocery_item.values_at["item"] = grocery_list

# grocery_list = [] << grocery_item.values_at["item"]

2 Answers

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

Hi, you can complete this challenge in two steps.

create an array called grocery_list

grocery_list = Array.new

add the value of the grocery_item hash at the "item" key to the newly created Array

grocery_list += grocery_item.values_at('item')

So, that's pretty much it.

By the way, you can complete this challenge in 1 line.

grocery_list = Array.new(grocery_item.values_at('item'))

# or
grocery_list = grocery_item.values_at('item')

but I think writing it in two steps makes the code a little bit easier to read and understand.

Michael Criste
Michael Criste
5,045 Points

Thanks William. I really liked how you broke it down. I wouldn't have thought of the "+=" operator, but it makes perfect sense.

William Li
William Li
Courses Plus Student 26,868 Points

Yes, Michael, since the return value of .values_at is an Array. The easiest way to solve this problem is just

grocery_list = grocery_item.values_at('item')