From: William Djaja Tjokroaminata <billtj@...>
Date: 2002-09-27T08:38:20+09:00
Subject: Re: hash missing value

Hi,

I think this has been discussed before.  We can take an advantage of, as
one instructor put it, "the short circuit concept from electrical
engineering", i.e., 

  A || B  # if A is false, then B should be evaluated; otherwise B is not

and a similar concept for &&.  So you can simply write:

    window.caption = files[current_item] || "Untitled"

Regards,

Bill
============================================================================
MikkelFJ <mikkelfj-anti-spam@bigfoot.com> wrote:
> As an extension or alternative to this, what about a two value assigment
> where the second value is assigned if the first value is false or nil:

> files = { "item1" => "myfile.rb", "item2" => "mytestdata"}
> window.caption = files[current_item] alternative "Untitled"
> or
> window.caption = files[current_item] \/ "Untitled"

> Mikkel