From: Brian Candler <b.candler@...>
Date: 2010-04-11T18:17:58+09:00
Subject: Re: question about pickaxe code example

Chuck Taylor wrote:
> in chapter 12 of pickaxe in the tutthreads_10.rb example there is a line
> 
> threads.each(&:join)
> 
> that appears to be doing what you would expect from the line
> 
> threads.each {|t| t.join}
> 
> I'm wondering if anyone could point me at a more general description of
> how this bit of code is doing something like turning a symbol into a
> code block?  (this is totally a guess on my part)

You're right, and Symbol#to_proc is what to Google for to get the full 
details.

http://pragdave.pragprog.com/pragdave/2005/11/symbolto_proc.html
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