From: Love U Ruby <lists@...>
Date: 2013-05-22T01:31:50+09:00
Subject: Re: Enum#each issue

Ok! I tried the below:

2.0.0p0 :001 > a = [1,2,3,4]
 => [1, 2, 3, 4]
2.0.0p0 :002 > m=a.to_enum(:map!)
 => #<Enumerator: [1, 2, 3, 4]:map!>
2.0.0p0 :003 > m.next
 => 1
2.0.0p0 :004 > a
 => [1, 2, 3, 4]

Still ok.

2.0.0p0 :005 > m.next
 => 2
2.0.0p0 :006 > a
 => [nil, 2, 3, 4]

Now how that nil comes above? I am totally confused.

2.0.0p0 :007 > m.next
 => 3
2.0.0p0 :008 > a
 => [nil, nil, 3, 4]
2.0.0p0 :009 >

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