From: Charles Calvert <cbciv@...>
Date: 2010-10-12T05:05:19+09:00
Subject: more idiomatic way to avoid errors when calling method on variable that may be nil?

I'm using Ruby 1.8.7 patchlevel 249

Is there a more idiomatic way to do the following?

var = hash[key].nil? ? nil : hash[key].downcase

Note that if hash[key] is nil, I want nil assigned to var, so this
won't work:

var = hash[key].downcase unless hash[key].nil?

Obviously I could do this, but I'm trying to keep it on one line:

var = hash[key]
var = var.downcase unless var.nil?

-- 
Charles Calvert
Moderator - alt.computer.consultants.moderated
Submission Address: accm@celticwolf.net
Contact Address: accm_mod@celticwolf.net