From: "ara.t.howard" <ara.t.howard@...>
Date: 2008-04-12T08:27:25+09:00
Subject: Re: delete_if, select and (lack of) delete_if!, self.POLS == false


On Apr 11, 2008, at 2:40 PM, Saku Ytti wrote:
> I was more thinking something along the lines
>
> foo = {}
> ('a'..'z').each { |l| foo[l] = somearray.select {dosomething} }
>
> So I'd be populating foo hash, with values from somearray according
> to some magic. If I'd know I only need to use each value of somearray
> once, it would make sense to 'pop' the values out from the somearray
> in-place.

[ 'a', 'a', 'a' ].select{|x| x == 'a'}

and you've clobbered....  not to mention it loses ordering.  the only  
thing which has semantics inline with that of select is

a.replace a.select(&condition)

which preserves ordering and allows for duplicates.

cheers.

a @ http://codeforpeople.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama