Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Ruby Ruby Collections Ruby Hashes Working with Hash Keys

Posted by Robert Ette
Robert Ette
1,281 Points

clarification

I do not understand the second requirement in the question below:

"Using the has_key? method, check if the hash variable has a key called "calories". If it does, set a new variable called food to true."

What is new variable? (hash, key or value)

hash.rb 
hash = { "name" => "Bread", "quantity" => 1, "calories" => 100 }
hash.has_key?("calories")
food = "true"

1 Answer

William Li
William Li
Courses Plus Student 26,868 Points

Hi Rober.

This challenge asks that you set food to true ONLY IF hash has the key "calories".

so, if you combine line 2 & 3 of your code together, you'll have the correct solution.

hash = { "name" => "Bread", "quantity" => 1, "calories" => 100 }
food = "true" if hash.has_key?("calories")

hope this helps.

Robert Ette
Robert Ette
1,281 Points

Thanks William. You made me see clearly.