From: "Esteban Manchado Velázquez" <zoso@...>
Date: 2006-05-04T22:31:53+09:00
Subject: Re: Ruby equivalent to simple awk program

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On Thu, May 04, 2006 at 10:22:16PM +0900, Bil Kleb wrote:
> Hello,
>=20
> 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":
>=20
>  Glen Herrmannsfeldt wrote:
>=20
>  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.
>=20
>   { array[n++]=3D$0;}
>=20
>   END {
>      while(n-->0) print array[n];
>      }
>=20
>  This took about 10 seconds to write and worked the
>  first time.

    Piece of cake ;-)

    puts File.readlines('somefile').reverse

And waaaayyyy much more readable :-)

    BTW, it worked for me the _second_ time, because I initially wrote
"read_lines" instead of "readlines". I don't use that method very much :-)

--=20
Esteban Manchado Vel=E1zquez <zoso@foton.es> - http://www.foton.es
EuropeSwPatentFree - http://EuropeSwPatentFree.hispalinux.es

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