From: thomas.macklin@...
Date: 2007-08-15T05:50:02+09:00
Subject: Re: TCPSocket select method

On Aug 14, 3:23 pm, Roger Pack <rogerpack2...@gmail.com> wrote:
> Eric Hodel wrote:
> > On Aug 13, 2007, at 23:54, Sylvain Joyeux wrote:
>
> >>> chance what the 'internal' select method does?
> >> It cannot use IO.select since IO.select is a singleton method of IO
> >> and a
> >> TCPSocket object is an instance of IO. The only way to explicitely get
> >> IO.select is to call
> >>   r,w,e = IO.select(...)
>
> >> It calls Kernel#select. And I wouldn't be surprised if
> >> Kernel#select and
> >> IO.select were actually the same method ...
>
> > They are.
>
>  class TCPSocket
>   def readableNow?
>     r,w,e = select([self],nil,nil,0)
>     return r != nil
>   end
>  end
>
> So...follow up question:
> with the above code, if you try to run it, it says that "select takes 0
> arguments, 4 given" (whereas 'normally' select takes four).  If I
> replace the call to select (above), with IO.select, then it works with 4
> parameters.  So I am thinking it is a different 'internal' select
> function of some type.  So...my guess is it is not a call to IO.select
> or Kernel.select...hmm...
> --
> Posted viahttp://www.ruby-forum.com/.

Enumerable#select takes no args... perhaps you have an array of IOs
you're calling select on?