From: Brian Candler <b.candler@...>
Date: 2009-08-20T21:03:45+09:00
Subject: Re: #has_arguments?

Robert Klemme wrote:
> As a side note: I see this sometimes
> 
> def m(a = nil)
>   @a = a.nil? ? 123 : a
> end
> 
> which is of course silly.  The same would be much better expressed as
> 
> def m(a = 123)
>   @a = a
> end

No, it's not the same. Consider:

  def foo(a = nil)
    m(a)
  end

  foo()

It saves replicating your default values all over the place, which isn't 
very DRY.

Or you could more simply write

  def m(a = nil)
    @a = a || 123
  end
-- 
Posted via http://www.ruby-forum.com/.