From: Ryan Davis <ryand-ruby@...>
Date: 2010-10-12T17:10:21+09:00
Subject: Re: Why does a lot of code not include parenthesis?


On Oct 11, 2010, at 21:26 , Josh Cheek wrote:

> On Mon, Oct 11, 2010 at 9:58 PM, ara.t.howard <ara.t.howard@gmail.com>wrote:
> 
>> -42.abs vs -42.abs()
>> 
>> 
> In this case, the negative sign is also a method. Fully parenned, it looks
> like 42.-@().abs() yikes!

ruby has negative numbers.

% echo "-42.abs" | parse_tree_show
s(:call, s(:lit, -42), :abs, s(:arglist))