From: Guest <toalett@...>
Date: 2006-04-21T06:54:11+09:00
Subject: Re: Optional Message Parameters?

Nathan Olberding wrote:
> (Warning: Newbie Altert!)
> 
> How do I write a method with optional params? I would think that this:
> 
> def do_this(opt1="", opt2="")
> 	puts opt2
> end
> do_this(opt2="This")
> 
> 
> Would result in "This" being displayed. Instead, "This" becomes the 
> value of opt1. I'd like to set opt1 and opt2 to default to "". How do I 
> do that?
Use a hash:

def do_this( args )
  puts args[:opt2]
end
do_this :opt2=>"This" #=> This

What you're doing now is assigning to opt2 then passing it:

do_this(opt2="This")
puts opt2 #=> "This"

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