From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-07-06T03:23:47+09:00
Subject: Re: Is this a bug?

On Sun, Jul 06, 2003 at 02:46:28AM +0900, Aryeh Friedman wrote:
> Is this a bug in ruby?

No, it's the normal assignment semantics:

>> a = 1, 2, 3
=> [1, 2, 3]
>> a
=> [1, 2, 3]

> class Foo
>         def intialize(aVal,bVal)
>                 @aVal=aVal
>                 @bVal=bVal
>         end
> 
>         def ack
>                 yield(@aVal,@bVal)
>         end
> end
> 
> foo[0]=Foo.new("ack","ack")
> foo[1]=Foo.new("bar","bar")
> foo[2]=Foo.new("foo","foo")
> 
> foo.each { |aVal| puts aVal }

Use 
 foo.each { |aVal,| puts aVal }

See the difference:

>> [[1,2],[3,4]].each { |v,| p v }
1
3
=> [[1, 2], [3, 4]]
>> [[1,2],[3,4]].each { |v| p v }
[1, 2]
[3, 4]


> Produces:
> 
> ack
> ack
> bar
> bar
> foo
> foo
> 
> It seems the output should be:
> 
> ack
> bar
> foo

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