From: "Sébastien M." <stkfdt@...>
Date: 2011-12-01T09:26:10+09:00
Subject: Re: errors with respond_to? and inject

Quick question though

Why don(t u need the 'respond_to?' method
We still have to check if object has a price method in order to return 
nil
if not. Or is there something i missed?

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