From: Josh Cheek <josh.cheek@...>
Date: 2010-04-03T00:43:57+09:00
Subject: Re: scope question

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2010/4/2 Jes=FAs Gabriel y Gal=E1n <jgabrielygalan@gmail.com>

>  So my point is that, independently on the internal implementation of
> Fixnums, the important consideration for his question is the fact that
> they are inmutable, and so it's impossible to call a method that would
> modify the object. So it's not possible to mimic the same examples as
> with hashes and arrays.
>
> Jesus.
>
>
You can get the array and hash to mimic the number, though, by calling non
mutating methods on them.


def scope( old_hash , old_array , old_num )
 puts "in scope"
 p (old_hash.merge Hash[ 'e',5 , 'f',6 , 'g',7 ])   # =3D> {"a"=3D>1, "b"=
=3D>2,
"c"=3D>3, "d"=3D>4, "e"=3D>5, "f"=3D>6, "g"=3D>7}
 p (old_array +=3D [5,6,7])                           # =3D> [1, 2, 3, 4, 5=
, 6,
7]
 p (old_num +=3D 1)                                   # =3D> 8
end



hash   =3D {"a"=3D>1,"b"=3D>2,"c"=3D>3,"d"=3D>4}
array  =3D [1,2,3,4]
num    =3D 7

scope( hash , array , num )

puts
puts "after scope"
p hash   # =3D> {"a"=3D>1, "b"=3D>2, "c"=3D>3, "d"=3D>4}
p array  # =3D> [1, 2, 3, 4]
p num    # =3D> 7

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