From: Ryan Leavengood <mrcode@...>
Date: 2005-04-23T00:10:48+09:00
Subject: Re: for .. in .. else?

Hal Fulton wrote:
>
>>>> Shouldn't that be "if" instead of "unless"?
>
> Actually I'm not awake enough atm to judge... but the mere fact
> that it generates discussion shows that it's ugly code that I've
> written. :)

Come on guys, how hard is it to test? :)

Using if is correct...to see, run this code:

require 'erb'

Song = Struct.new("Song", :name)

song_list = [Song.new('Shiver'), Song.new('Free'), Song.new('Follow Me')]

template =<<END
 <table>
   <tr><th>Songs</th></tr>
   <% if song_list.each do |song|%>
     <tr><td><%= song.name %></td></tr>
     <% end.empty? %>
     <tr><td>no songs!</td></tr>
   <% end %>
   </tr>
 </table>
END
erb = ERB.new(template)
puts "With songs:"
erb.run
song_list=[]
puts "Without songs:"
erb.run