trusty (3) observe.3tcl.gz

Provided by: tcllib_1.15-dfsg-2_all bug

NAME
       tcl::transform::observe - Observer transformation, stream copy


SYNOPSIS
       package require Tcl  8.6

       package require tcl::transform::core  ?1?

       package require tcl::transform::observe  ?1?

       ::tcl::transform::observe chan logw logr

_________________________________________________________________


DESCRIPTION
       The  tcl::transform::observer  package  provides a command creating a channel transformation which passes
       the read and written bytes through unchanged (like tcl::transform::identity), but additionally copies the
       data it has seen for each direction into channels specified at construction time.

       Related   transformations   in   this   module   are   tcl::transform::adler32,  tcl::transform::counter,
       tcl::transform::crc32, and tcl::transform::identity.

       The internal TclOO class implementing the transform handler is a sub-class  of  the  tcl::transform::core
       framework.


API
       ::tcl::transform::observe chan logw logr
              This command creates an observer transformation on top of the channel chan and returns its handle.
              The channel handles logr and logw are there the data is copied to.


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     SF     Trackers
       [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you  may
       have for either package and/or documentation.


KEYWORDS
       channel  transformation,  observer,  reflected  channel,  stream  copy,  tip 230, transformation, virtual
       channel


CATEGORY
       Channels


       Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>