From: Joel VanderWerf <vjoel@...>
Date: 2002-10-03T13:06:35+09:00
Subject: Re: Named Arguments doesn't work?

Wai-Sun Chia wrote:
> Why doesn't this work?
> ==================== ha.rb ======================
> #!/usr/bin/ruby
> class Song
>       def initialize(name, artist, duration)
>           @name     = name
>           @artist   = artist
>           @duration = duration
>     end
> end
> 
> a = Song.new("name"=>"foo", "artist"=>"bar", "duration"=>3)
> puts a.inspect
> =================================================

Try this:

class Song
       def initialize(arg)
           @name     = arg[:name]
           @artist   = arg[:artist]
           @duration = arg[:duration]
     end
end

a = Song.new(:name=>"foo", :artist=>"bar", :duration=>3)
puts a.inspect


I changed "name" to :name and so on because comparison and hashing are 
faster for symbols than for strings.