NAME

       zero - Create and manipulate zero channels

SYNOPSIS

       package require Tcl

       package require memchan

       zero

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DESCRIPTION

       The command described here is only available in a not-yet released version of the package. Use the CVS to
       get the sources.

       zero   creates  a zero channel which absorbs everything written into it. Reading from a zero channel will
              return the requested number of null bytes. These channels are essentially Tcl-specific variants of
              the zero device for unixoid operating systems  (/dev/zero).  Transferring  the  generated  channel
              between interpreters is possible but does not make much sense.

OPTIONS

       Memory channels created by zero provide one additional option to set or query.

       -delay ?milliseconds?
              A  zero  channel is always writable and readable. This means that all fileevent-handlers will fire
              continuously.  To avoid starvation of other event sources the events raised by this  channel  type
              have a configurable delay. This option is set in milliseconds and defaults to 5.

SEE ALSO

       fifo, fifo2, memchan, null, random

KEYWORDS

       channel, i/o, in-memory channel, null, zero

COPYRIGHT

       Copyright (c) 2004 Pat Thoyts <patthoyts@users.sourceforge.net>

Memory channels                                        2.2                                            zero(3tcl)