EdUarDo <eduardo.yanezNOSPAM / nospamgmail.com> wrote:
> > I think I figured out what you want :-)  You always want @a, and you
> > only want @b if @a is not zero:
> 
> Yes :)
> 
> > 
> >   "#{@a}#{@b unless @a.zero?}"
> 
> That's what I wanted. I didn't know that the condition could be into
> the brackets. Thanks.

#{} can contain an arbitrarily complex expression, the result of which
has to_s called on it before being interpolated.

martin