From: Simen <toalett@...>
Date: 2006-04-21T07:18:42+09:00
Subject: Re: Optional Message Parameters?

> *? I don't even know how I'd google that :-)

The star is used to have fun with parameters. Watch:

def have_fun(*args)
  args.each{|arg| puts arg}
end

have_fun 1, 2, 3 # outputs 1, 2, 3

It basically takes any additional parameters provided and puts it into 
an array (with the exception of blocks):

def some_args( opt1, opt2, *otheropts )
  otheropts
end

some_args nil, nil, "have", "fun" # => ["have", "fun"]

You can use it the other way to:

arguments = ["Hello", "world"]
send("puts", *arguments) # Outputs the arguments

See http://redhanded.hobix.com/bits/wonderOfTheWhenBeFlat.html for 
creative uses.

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