From: Logan Capaldo <logancapaldo@...>
Date: 2006-05-04T22:28:16+09:00
Subject: Re: Ruby equivalent to simple awk program


On May 4, 2006, at 9:22 AM, Bil Kleb wrote:

> Hello,
>
> I found this awk snippet in news:comp.lang.fortran this
> morning, and it made me realize that I don't use Ruby as a
> *nix filter as often as I probably should because I couldn't
> duplicate the capability in "about 10 seconds":
>
>  Glen Herrmannsfeldt wrote:
>
>  Here is an awk program that will read in a file line
>  by line and write the lines out in reverse order.  It
>  will allocate array elements as long as there is still
>  available memory.  Variables are initialized to zero
>  (or ""), even array elements.
>
>   { array[n++]=$0;}
>
>   END {
>      while(n-->0) print array[n];
>      }
>
>  This took about 10 seconds to write and worked the
>  first time.
>
> Later,
> -- 
> Bil
> http://fun3d.larc.nasa.gov
>

puts ARGF.readlines.reverse

At least the ruby version is more concise.