From: Zhao Yi <youhaodeyi@...>
Date: 2008-11-17T16:50:46+09:00
Subject: Re: How can I overload a method in Ruby

Einar Magn炭s Boson wrote:
> there is no overloading, only overriding.
> 
> 
> You can have variable number of arguments by writing
> 
> def fun(*params)
>    #here params is an array of your arguments, [] if none.
> end
> 
> you can also have a default value for your parameter:
> 
> class Impl
>   include MyModule
> 
>   def fun(directory = "")
>        puts "fun #{directory}"
>   end
> 
> end
> m=Impl.new()
> m.fun()
> # >> fun
> m.fun "/dev/null"
> # >> fun /dev/null"

ok I understand. Just curious, overload is a good feature in OO 
programming. Why doesn't Ruby support it? If I use the method you 
mentioned, I have to check the parameters and use if - else or swith to 
distinguish them.
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