1tcl::chan::zero(n)     Reflected/virtual channel support    tcl::chan::zero(n)
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NAME

8       tcl::chan::zero - Zero channel
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SYNOPSIS

11       package require Tcl  8.5
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13       package require TclOO
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15       package require tcl::chan::events  ?1?
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17       package require tcl::chan::zero  ?1?
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19       ::tcl::chan::zero
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DESCRIPTION

24       The  tcl::chan::zero package provides a command creating zero channels,
25       i.e. read-only channels which return an infinite stream of null charac‐
26       ters  upon reading. This is equivalent to the zero channels provided by
27       the package Memchan, except that this is written in pure Tcl, not C. On
28       the other hand, Memchan is usable with Tcl 8.4 and before, whereas this
29       package requires Tcl 8.5 or higher, and TclOO.
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31       Packages related to this are tcl::chan::null and tcl::chan::nullzero.
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33       The internal TclOO class implementing the channel  handler  is  a  sub-
34       class of the tcl::chan::events framework.
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API

37       ::tcl::chan::zero
38              This command creates a new zero channel and returns its handle.
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BUGS, IDEAS, FEEDBACK

41       This  document,  and the package it describes, will undoubtedly contain
42       bugs and other problems.  Please report such in the category  virtchan‐
43       nel  of  the  Tcllib  Trackers  [http://core.tcl.tk/tcllib/reportlist].
44       Please also report any ideas for enhancements you may have  for  either
45       package and/or documentation.
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47       When proposing code changes, please provide unified diffs, i.e the out‐
48       put of diff -u.
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50       Note further that  attachments  are  strongly  preferred  over  inlined
51       patches.  Attachments  can  be  made  by  going to the Edit form of the
52       ticket immediately after its creation, and  then  using  the  left-most
53       button in the secondary navigation bar.
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KEYWORDS

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

59       Channels
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62       Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>
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67tcllib                                 1                    tcl::chan::zero(n)
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