From: "David A. Black" <dblack@...>
Date: 2005-04-22T22:21:49+09:00
Subject: Re: for .. in .. else?

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.)


David

-- 
David A. Black
dblack@wobblini.net