From: Robert Dober <robert.dober@...>
Date: 2007-02-27T06:00:37+09:00
Subject: Re: extract a random number of items from an array

On 2/26/07, Robert Dober <robert.dober@gmail.com> wrote:
> Ooops bad formatting again, sorry for the repost folks:
This seems a mess, I'lll try again

Select randomly and unstably n elements from an array:

ary.sort_by{ rand }[0..n-1]  # or [*1..n] if n< ary.size

Select randomly a stable n elements from an array:

ary.values_at( *[*0..ary.size-1].sort_by{ rand }[0..n-1].sort )

Hopefully I got it eventually through in plain text.

Would be nice if someone could confirm even with a harsh "STOP sending
all this crap" ;)

Cheers
Robert

-- 
We have not succeeded in answering all of our questions.
In fact, in some ways, we are more confused than ever.
But we feel we are confused on a higher level and about more important things.
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