From: Farrel Lifson <farrel.lifson@...>
Date: 2006-03-10T00:10:38+09:00
Subject: Re: nuby question: sorting with nils

Actually you can shorten it a bit further if you use

@date ? @date <=> anItem.date : -1

That's due to the fact that in Ruby nil is equivalent to false in
conditional expression.

Farrel

On 3/9/06, Farrel Lifson <farrel.lifson@gmail.com> wrote:
> def <=> anItem
>   @date.nil? ? -1 : @date <=> anItem.date
> end
>
> You can set the -1, to 0, or 1 depdending where you want the objects
> with nil @dates placed.
>
> Farrel
>
> On 3/9/06, larry <ljw1001@gmail.com> wrote:
> > if i make an object sortable using <=> as so:
> >
> > def <=> anItem
> >   @date <=> anItem.date
> > end
> >
> > and date is nil, it fails.  What's the right way to handle nils in this
> > scenario?
> >
> > thanks.
> >
> >
> >
>
>