From: Alex Fenton <alex@...>
Date: 2005-07-20T18:05:55+09:00
Subject: Re: Trying to alias for/foreach


> class MyIO<IO
>  
>   alias :each :foreach
>   #error:
>   #: undefined method `foreach' for class `MyIO' (NameError)
> 
> end

IO.foreach is a _class_ method, not an instance method. It's a shortcut, 
called like this:

IO.foreach(portname) { ... }

vs the instance method - which already exists - which is used like this:

IO.new(int, modestring).each { ... }

Given that an instance method already exists called 'each', you probably 
don't want to create a class method with the same name - it's confusing. 
But if you did

class MyIO < IO
   class << self
     alias :each :foreach
   end
end

alex