command to replace the entire line from the key point Post: 302350568

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LEARN ABOUT OPENDARWIN

zero

zero(3tcl)                                                                                                                              zero(3tcl)

NAME

       zero - Create and manipulate zero channels

SYNOPSIS

       package require Tcl

       package require memchan

       zero

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)

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