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tcl::chan::cat(3tcl) Reflected/virtual channel support tcl::chan::cat(3tcl) 





NAME


tcl::chan::cat - Concatenation channel






SYNOPSIS


package require Tcl 8.5


package require TclOO 


package require tcl::chan::core ?1?


package require tcl::chan::cat ?1.0.3?


::tcl::chan::cat chan...










DESCRIPTION


The tcl::chan::cat package provides a command creating
    concatenation channels. These are non-seekable channels owning a list of
    subordinate channels whose contents they return in order, until all are
    exhausted. In this manner the channel is the concatentation of the contents
    of all the sub-ordinate channels.


Note that the created channels take ownership of the channels they
    were constructed with. Whenever they have exhausted one of their channel it
    will be closed. Similarly, closing the cat channel will close all the
    sub-ordinates it still has.


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


Event handling is delegated to the currently active
  sub-channel.






API



  
::tcl::chan::cat chan...

  
This command creates the concatenation channel using all the provided
      channels, 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.


When proposing code changes, please provide unified diffs,
    i.e the output of diff -u.


Note further that attachments are strongly preferred over
    inlined patches. Attachments can be made by going to the Edit form of
    the ticket immediately after its creation, and then using the left-most
    button in the secondary navigation bar.






KEYWORDS


concatenation channel, reflected channel, tip 219, virtual
  channel






CATEGORY


Channels






COPYRIGHT


Copyright (c) 2011 Andreas Kupries <andreas_kupries@users.sourceforge.net>








  

    1.0.3
    tcllib