From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2011-07-19T19:22:13+09:00
Subject: Re: Get common entries in two arrays

On Tue, Jul 19, 2011 at 12:19 PM, Gunther Diemant <g.diemant@gmx.net> wrote:
> arrayA | arrayB should do the trick

That would be the union. He's looking for Array#&

Jesus.