null - Create and manipulate null channels
TABLE OF CONTENTS
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
KEYWORDS
COPYRIGHT
package require Tcl
package require memchan
|
The command described here is only available in a not-yet released version of the package. Use the CVS to get the sources.
Memory channels created by null provide one additional option to set or query.
A null channel is always writable and never readable. This means that a writable fileevent-handler will fire continuously and a readable fileevent-handler never at all. The exception to the latter is only the destruction of the channel which will cause the delivery of an eof event to a readable handler.
fifo, fifo2, memchan, random, zero
channel, i/o, in-memory channel, null
Copyright © 1996-2003 Andreas Kupries <andreas_kupries@users.sourceforge.net>