From: 7stud -- <bbxx789_05ss@...>
Date: 2007-10-18T04:06:00+09:00
Subject: Re: extracting values from consecutive lines

William James wrote:
> 
> p IO.readlines( 'input.dat').grep( /^\d/ ).
>   map{|s| s.strip.split.map{|x| x.to_f}}.select{|a|
>     a.first.between?(158,165) }

Better.  Still slower.
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