Errors with size on hash value

I have some critical error with the hash's size function. This is acting irationnal.

Here is my hash :

"questionnaires"=>{"1"=>{"6"=>"8", "7"=>"12", "5"=>"19"}}

@questions=evt["questionnaires"]["1"] # not really "1", that's an id but don't matter here

@questions.each do |(key,question)| # should be "6"=>"8", then "7"=>"12", ect .开发者_Python百科..
    temp = question.size

And results are 1 , 2 , 2. So it is bugging, i am testing with size cause sometimes i get an array like this :

so, i don't know why

 "6"=>"8".size == 1, "7"=>"12".size == 2  and "5"=>"19".size == 2.

And with this array

 "questionnaires"=>{"3"=>{"8"=>{"16"=>"16", "18"=>"18"}}}

results are correct. Size = 2, like expected.

Any ideas ?

When you have (key,question) parameters like you do, they get filled in parallel assignment as it iterates through the hash. So, for example, the first iteration key is "6" and question is "8". The second iteration, key is "7" and question is "12".

And you are asking question.size. But since question is just a String, question.size returns the length of the string. The first iteration through, the question id "8" is 1 character long. The second iteration, the question id "12" is 2 characters long. That's where the numbers you are getting are coming from.