From: Alan Chen <alan@...>
Date: 2002-09-27T07:55:13+09:00
Subject: Re: hash missing value

On Fri, Sep 27, 2002 at 07:37:56AM +0900, William Djaja Tjokroaminata wrote:
> Hi,
> 
> I think it is already there.  If you first declare the hash with
> 
>     files = Hash.new ("Untitled")
> 
> then you will get "Untitled" instead of nil for any missing key.  (But of
> course, then you cannot create and populate the hash at the same time :)
> 
> Regards,
> 
> Bill
> ============================================================================
> MikkelFJ <mikkelfj-anti-spam@bigfoot.com> wrote:
> > Wouldn't it be useful with a missing value in hash tables so you avoid
> the
> > nil value and having to test for this?
> 

You can set it after initialization too

> > files = { "item1" => "myfile.rb", "item2" => "mytestdata", missing_value =>
> > "Untitled"}

files.default = "Unititled"

> > window.caption = files[current_item]




-- 
Alan Chen
Digikata LLC
http://digikata.com