From: Ryan Davis <ryand-ruby@...>
Date: 2008-11-17T16:42:29+09:00
Subject: Re: How can I overload a method in Ruby


On Nov 16, 2008, at 23:26 , Zhao Yi wrote:

short answer: you can't (via normal ruby).

> When I run this program, I got this error:
>
> class_objects/module.rb:22:in `fun': wrong number of arguments (0  
> for 1)
> (ArgumentError)
>  from class_objects/module.rb:22
>
> I declared two methods with the same name but different parameters.  
> Why
> can't ruby support overload method?

because it wasn't designed to, that's why.

You can use default args to do what you want above:

> def fun dir = nil
>   puts "fun #{dir}"
> end