From: "Aaron D. Gifford" <astounding@...>
Date: 2011-03-26T21:41:50+09:00
Subject: Re: shortcut for add unless nil ?

I've found that whenever I have a variable that may be nil, doing
.to_i or .to_s or .to_a or something similar (so long as the NilClass
supports the type conversion I need) can come in handy.

So for something like:

big_array = array_or_nil_var1 + array_or_nil_var2 + array_or_nil_var3

I would just do:

big_array = array_or_nil_var1.to_a + array_or_nil_var2.to_a +
array_or_nil_var3.to_a

Aaron out.