From: sto.mar@...
Date: 2012-07-20T15:08:38+09:00
Subject: Re: unless if not == unless post_on_ruby_forum

Am 20.07.2012 06:05, schrieb roob noob:
> So everything I have thus far read and heard about the Ruby unless
> keyword lead me to believe that it is just another word for if not. This
> is not true.
>
>   unless 1 + 1 == 2
>     puts "a"
>   elsif 1 + 1 == 5
>     puts "b"
>   else
>     puts "c"
>   end

[...]

> elsif. Why does everyone rave about how unless is exactly like if not
> but with clearer language, if this is not the case ?

Your usage of unless is extremely unclear.
Most people would advise you to change

   unless x == 2
     a
   else
     b
   end

to

   if x == 2
     b
   else
     a
   end

Furthermore, I do not understand what you want to achieve:
your "b" case seems useless to me.
Assuming 1 + 1 really would be 5, it could not be equal to 2
at the same time and you would get the "a" case, not "b".

-- 
<https://github.com/stomar/>