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
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>