From: Gavin Kistner <gavin.kistner@...>
Date: 2006-10-18T04:49:26+09:00
Subject: Re: ruby way to say this?

From: Louis J Scoras [mailto:louis.j.scoras@gmail.com] 
> How about:
> 
>     def if_zero(exp,alt)
>       exp == 0 ? alt : exp
>     end
> 
>     x = 0
> 
>     if_zero( (x+=1) + 1, 7) # => 2
>     if_zero(  x-=1     , 8) # => 8
> 
> So your original would look like:
> 
>     # if_zero(one_thing, other_thing)

Let's make that more OO-pretty (using a goofy name):

class Numeric
  def or_if_zero( alternate_value )
    self.nonzero? ? self : alternate_value
  end
end

Which makes the code:

oneThing().or_if_zero( otherThing() )