From: Robert Dober <robert.dober@...>
Date: 2008-04-12T04:04:30+09:00
Subject: Re: delete_if, select and (lack of) delete_if!, self.POLS == false

On Fri, Apr 11, 2008 at 7:31 PM, Saku Ytti <saku@ytti.fi> wrote:
> On (2008-04-12 02:26 +0900), Saku Ytti wrote:
>
>  > class Array;def reject!(&blk)
>  > reject(&blk).each{|e|delete e};end
>  > def select!(&blk)
>  > select(&blk).each{|e|delete e};end;end
>
>  Actually just inside out, reject! should be select(&blk)
>  and select! should be reject(&blk).
>
No, not quite

x=[*0..1]
x.select{|n| n.even?} -> [0]
x -> [0,1]
x.reject!{|n| n.odd?} -> [0]
x -> [0]

Cheers
Robert

>  --
>   ++ytti
>
>



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