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Ruby Ruby Collections Ruby Hashes Working with Hash Keys

Jarmo Pesonen
Jarmo Pesonen
2,607 Points
Posted by Jarmo Pesonen
Jarmo Pesonen
2,607 Points

Hi, I am stuck. What is wrong with following code? I am just getting food variable not found response

I have not added "food" => false information to first line but if I understand this correctly it is not supposed to be there and I if I put it there I still get same response

hash.rb 
hash = { "name" => "Bread", "quantity" => 1, "calories" => 100 }

if hash.has_key?("calories") == true 
  hash.store("food",true) 
end

3 Answers

Cristian Altin
Cristian Altin
12,165 Points
Cristian Altin
Cristian Altin
12,165 Points

Basically the if clause checks if there's a key named "calories" in the hash. If there's one in your case it will add a new key,value combo.

The store method changes the value of a key if it exists else it creates the specified key with its value. That is why it's indifferent to you adding "food" => false in the hash definition.

Jarmo Pesonen
Jarmo Pesonen
2,607 Points
Jarmo Pesonen
Jarmo Pesonen
2,607 Points

thanks for reply.. I am still interested to know a) did I understood the task correctly b) what is needed to fix it

Cristian Altin
Cristian Altin
12,165 Points
Cristian Altin
Cristian Altin
12,165 Points

Actually no, it asks you to create a variable called "food" not a key in the hash. ;-)

P.s. remember to set it to true as asked. You are almost there!

Jarmo Pesonen
Jarmo Pesonen
2,607 Points
Jarmo Pesonen
Jarmo Pesonen
2,607 Points

haha..

I quess I was so deep in "hash world" that variable turned into hash :-)

thanks!