Ruby print hash key and value [closed]
Depending on the contents of your Hash, you might need to convert the key to a string since it might be a symbol.
puts key.to_s + ' : ' + valueOr, what I would suggest doing, use string interpolation:
puts "#{key}:#{value}"The reason you are getting an error, if key is indeed not a string, is because it is trying to call the method + on whatever key is. If it does not have a + method, you will get an error.