From: Tony Arcieri <tony.arcieri@...>
Date: 2010-10-13T14:45:41+09:00
Subject: Re: more idiomatic way to avoid errors when calling method on variable that may be nil?

--0016363b9e5a68f6190492791aae
Content-Type: text/plain; charset=ISO-8859-1

On Tue, Oct 12, 2010 at 6:39 AM, Rick DeNatale <rick.denatale@gmail.com>wrote:

> Nobody seems to have mentioned it, I guess since this is the place for
> 'pure' rubyists, but Rails has the following methods:
>
> So with this you can write simply
>
>   var =  hash[key].try(:downcase)
>

That's pretty cool, but I'd prefer it return a proxy object for all non-nil
objects that just relays the method call, and for nil a proxy that always
returns nil, ala:

hash[key].try.downcase

-- 
Tony Arcieri
Medioh! A Kudelski Brand

--0016363b9e5a68f6190492791aae--