From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2008-02-25T09:29:31+09:00
Subject: Re: Suprising behaviour with "def property=" method


On Feb 24, 2008, at 2:41 PM, Farrel Lifson wrote:

> I had a bit of a surprise with the following
>
> class Foo
>  def bar(value)
>    @bar = value.upcase
>  end
> end
>
> f = Foo.new
> my_bar = (f.bar = "bar")
>
> I initially thought that my_bar would == "BAR" but in fact it equals
> "bar". It seems no matter what the final value of the bar= method is
> the return value is always the parameters. First time I've run into
> this so I thought I would share and ask if anyone can think of anyway
> to get around this?
>
> Farrel


	This is just the way ruby works. It *always* returns the right hand  
side of any method call ending in =. This is for consistency sake.  
since you can write methods that look like assignment it keeps things  
consistent to always return the rhs of any assignment.


Cheers-
- Ezra Zygmuntowicz
-- Founder & Software Architect
-- ezra@engineyard.com
-- EngineYard.com