From: Rob Saul <wyrd@...>
Date: 2008-02-07T13:14:24+09:00
Subject: Re: idiom I've not seen before

Jeremy Kemper wrote:
> 
> Sure. &:position == :position.to_proc == proc { |element, *args|
> element.position(*args) }
> 
> So elements.sort_by(&:position) is shorthand for sorting the elements
> by position.
> 
> jeremy

thanks to both Jeremy and Rob for the enlightenment.  And
yes, it is a Rails project.