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identity(3tcl)


NAME

   tcl::transform::identity - Identity transformation

SYNOPSIS

   package require Tcl  8.6

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

   package require tcl::transform::identity  ?1?

   ::tcl::transform::identity chan

______________________________________________________________________________

DESCRIPTION

   The  tcl::transform::identity  package  provides  a command creating an
   identity channel transformation, which does nothing but pass  the  read
   and  written  bytes  through  it  unchanged.  Not  really  useful in an
   application, however as the prototypical  observer  transformation  its
   code is a useful starting point for any other observers people may wish
   to write.

   The transformations in this module which derived from  identity's  code
   are          tcl::transform::adler32,          tcl::transform::counter,
   tcl::transform::crc32, and tcl::transform::observe.

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

API

   ::tcl::transform::identity chan
          This  command  creates  an identity transformation on top of the
          channel chan and returns its handle.

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           Trackers
   [http://core.tcl.tk/tcllib/reportlist].   Please  also report any ideas
   for enhancements you may have for either package and/or documentation.

KEYWORDS

   channel  transformation,  identity,   reflected   channel,   tip   230,
   transformation, virtual channel

CATEGORY

   Channels

COPYRIGHT

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



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