From: Adam Gardner <adam.oddfellow@...>
Date: 2009-04-09T23:33:18+09:00
Subject: Re: Hash questions

Hunt Jon wrote:
> When I run:
> 
> p {"foo" => 1, "bar" => 2, "baz" => 3 }
> 
> I get an error.
> 
> But when I run:
> 
> x =  {"foo" => 1, "bar" => 2, "baz" => 3 }
> p x
> 
> There's no error.
> 
> What's the difference between the two?
> 
> John

From what I can tell, ruby is interpreting the beginning of your hash as 
the beginning of a block, instead;
p({"foo" => 1, "bar" => 2, "baz" => 3 }) works as intended.

This is seems like a bug to me, although whether it's a bug with the 
parser (finding a block where it should be looking for a hash literal), 
a bug with p (asking for a block when it doesn't use one) or the 
documentation (failing to mention that p accepts a block), I'm not sure.
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