NAME

       tcl::chan::zero - Zero channel

SYNOPSIS

       package require Tcl  8.5

       package require TclOO

       package require tcl::chan::events  ?1?

       package require tcl::chan::zero  ?1?

       ::tcl::chan::zero

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DESCRIPTION

       The  tcl::chan::zero  package  provides  a  command creating zero channels, i.e. read-only
       channels which return an  infinite  stream  of  null  characters  upon  reading.  This  is
       equivalent  to  the  zero  channels  provided  by the package Memchan, except that this is
       written in pure Tcl, not C. On the other hand, Memchan is usable with Tcl 8.4 and  before,
       whereas this package requires Tcl 8.5 or higher, and TclOO.

       Packages related to this are tcl::chan::null and tcl::chan::nullzero.

       The  internal  TclOO  class  implementing  the  channel  handler  is  a  sub-class  of the
       tcl::chan::events framework.

API

       ::tcl::chan::zero
              This command creates a new zero channel and returns its handle.

BUGS, IDEAS, FEEDBACK

       This document, and the package it describes,  will  undoubtedly  contain  bugs  and  other
       problems.   Please  report  such  in  the  category  virtchannel  of  the  Tcllib Trackers
       [http://core.tcl.tk/tcllib/reportlist].  Please also report any ideas for enhancements you
       may have for either package and/or documentation.

KEYWORDS

       /dev/zero, reflected channel, tip 219, virtual channel, zero

CATEGORY

       Channels

COPYRIGHT

       Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>