From: Jean-Denis Vauguet <jd@...>
Date: 2006-09-15T08:20:55+09:00
Subject: Re: Question about 'unless' (negated if)

Lincoln Anderson wrote:
>     dir.each {|str|
>             ftp.get(str) unless str.index('d') == 0
>             else
>                 str = str.split('/')
>                 # ...
>             end
>             }
> end

You'll get an unexpected kELSE error on line 3. The unless statement is
still applyins only to line 2 here, it acts as the negative form of if
BUT as a oneliner. To actually create a block-like behavior, you must
write something like:

unless 1 == 2
    then puts "foo"
else
    puts "bar"
end

(looks like an if statement, doesn't 'it ?)