I am working on question for the Odin project. I have to run tests on the answers I give, and am not able to pass a test by using the code I have made. I got an unexpected result of the correct hash, but it is enclosed inside of an array for some reason.

def find_favorite(array_of_hash_objects)
  # take an array_of_hash_objects and return the hash which has the key/value
  # pair :is_my_favorite? => true. If no hash returns the value true to the key
  # :is_my_favorite? it should return nil
 
  
  # array_of_hash_objects will look something like this: # [
  #   { name: 'Ruby', is_my_favorite?: true },
  #   { name: 'JavaScript', is_my_favorite?: false },
  #   { name: 'HTML', is_my_favorite?: false }
  # ]

  # TIP: there will only be a maximum of one hash in the array that will
  # return true to the :is_my_favorite? key
end

My solution:

array_of_hash_objects.select {|key, value| key[:is_my_favorite?] == true}

I received this after running test:

`Failure/Error: expect(find_favorite(array)).to eq(expected_output)

   expected: {:is_my_favorite?=>true, :name=>"Ruby"}
        got: [{:is_my_favorite?=>true, :name=>"Ruby"}]`

My question is, how do I get the returned value out of an array? I predict I might be using the wrong method, but I think it might help to get an explanation from someone who sees the problem. No googling is solving this. This is my first stack overflow question.

CodePudding user response：

change from select to find. simply, the semantic of the methods is different:

• select returns all the elements that match the condition, so a collection, even if it's of length one or zero
• find returns the first element which match the condition or nil if none matches

in your case, you want find