From: Michael Hollins <mick@...>
Date: 2007-06-01T16:20:17+09:00
Subject: Re: Ruby bug in +=?

zarawesome@gmail.com wrote:
> On Jun 1, 3:00 am, james.d.mast...@gmail.com wrote:
>> Rewrite this longhand as:
>>
>> $list = [];
>> $list = $list + [function()];
>>
>> Which really means:
>>
>> $list = [] + ["d"]
> 
> Yeah, figured. It's just odd, and allows for some nice obfuscated
> coding.
> 
> 

I'd suggest what's making for the obfuscated code here is not +=, but the use of a global variable 
and a function that has side effects.

The behavior of += doesn't seem odd to me. I'd say it's well defined.