From: Jano Svitok <jan.svitok@...>
Date: 2007-04-28T18:23:23+09:00
Subject: Re: ruby conditional operator ? :

On 4/28/07, John Joyce <dangerwillrobinsondanger@gmail.com> wrote:
>
> On Apr 28, 2007, at 5:51 PM, Yaxm Yaxm wrote:
>
> > Hi,
> > in java, I can use ? : shorthand operators to ensure s is assigned to
> > some value.
> > String s = s == null ? "" : s;
> >
> > Is there similar shorthand operator in Ruby?
> >
> > Thanks.
> > Yaxm
> >
> > --
> > Posted via http://www.ruby-forum.com/.
> >
>
> The same old ternary operator is in Ruby as in most languages these
> days.
>   ?  :
> so...
>
> conditional_statement ? true_result : false_result

For assigning default value ||= is usually used (for non-logic values)

i.e.
@name ||= "Joe"

doesn't work for logic values (will overwrite false)
search google for ruby idioms (e.g.
http://wiki.rubygarden.org/Ruby/page/show/RubyIdioms)

Jano