From: Harry Kakueki <list.push@...>
Date: 2010-04-02T17:25:41+09:00
Subject: Re: scope question

>
> a_hash, an_arr and a_num are local to the method indeed. However, a_hash and an_array hold references to hash and array object respectively, not copies. So you are changing the objects passed to this method via those references. On the other hand, a_num is passed a Fixnum instance which are implemented as immediate objects and hence passed as copy.
>

def scope_q(an_arr)
  #an_arr[1] = 5  #This is a reference.
  an_arr = [6,6] #This is a local an_arr ?
end

a = [1,2,3,4]

scope_q(a)

p a  #> [1, 2, 3, 4]



Harry