From: "David A. Black" <dblack@...>
Date: 2005-04-22T22:38:15+09:00
Subject: Re: for .. in .. else?

Hi --

On Fri, 22 Apr 2005, David A. Black wrote:

> Hi --
>
> On Fri, 22 Apr 2005, Gavin Kistner wrote:
>
>> On Apr 22, 2005, at 6:27 AM, Douglas Livingstone wrote:
>>> On 4/21/05, Hal Fulton <hal9000@hypermetrics.com> wrote:
>>>> 
>>>> FWIW I'll offer this (untested) alternative:
>>>> 
>>>>   <table>
>>>>     <tr><th>Songs</th></tr>
>>>>     <% unless song_list.each do |song|%>
>>>>       <tr><td><%= song.name %></td></tr>
>>>>       <% end.empty? %>
>>>>       <tr><td>no songs!</td></tr>
>>>>     <% end %>
>>>>     </tr>
>>>>   </table>
>>>> 
>>>> 
>>> 
>>> Now that is nice :)
>> 
>> Shouldn't that be "if" instead of "unless"?
>
> No.  You want to list the song names, unless the list of songs is
> empty, in which case you just want to say: no songs.
>
> (You have to read ahead to the end.empty? bit to see how it all fits
> together.)

Whoops.  I think you're right.  Never mind....


David

-- 
David A. Black
dblack@wobblini.net