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tcl::chan::string(n) 1 tcllib "Reflected/virtual channel support"


tcl::chan::string - Read-only in-memory channel

Table Of Contents


  • package require Tcl 8.5
  • package require TclOO
  • package require tcl::chan::events ?1?
  • package require tcl::chan::string ?1?


The tcl::chan::string package provides a command creating channels which live purely in memory. They provide random-access, i.e. are seekable. In contrast to the channels created by tcl::chan::memchan they are read-only however, their content is provided at the time of construction and immutable afterward.

Packages related to this are tcl::chan::memchan and tcl::chan::variable.

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


::tcl::chan::string content

This command creates a new string channel and returns its handle. The channel provides random read-only access to the content string.

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. Please also report any ideas for enhancements you may have for either package and/or documentation.


in-memory channel, reflected channel, tip 219, virtual channel