From: "Алексей Черненков" <laise@...>
Date: 2013-02-15T21:30:16+09:00
Subject: Two similar sentences have different behaviour. Is it ok?

Two similar sentences have different behaviour. Is it ok?

Compare:

1.9.3p374 :001 > a = 123 unless defined? a
 => nil 
1.9.3p374 :002 > a
 => nil 

but...

1.9.3p374 :003 > unless defined? b
1.9.3p374 :004?>   b = 123
1.9.3p374 :005?>   end
 => 123 
1.9.3p374 :006 > b
 => 123