Tool Command Language definition language
/tik*l/ (Tcl) An interpreted string processing language for issuing commands to interactive
programs, developed by John Ousterhout
. Each application program
can extend tcl with its own set of commands.
Tcl is like a text-oriented Lisp
, but lets you write algebraic expressions for simplicity and to avoid scaring people away. Though originally designed to be a "scripting language" rather than for serious programming, Tcl has been used successfully for programs with hundreds of thousands of lines.
It has a peculiar but simple syntax
. It may be used as an embedded interpreter
in application programs. It has exceptions
(called libraries), name-spaces for procedures
, and provide/require. It supports dynamic loading of object code
. It is eight-bit clean
. It has only three variable types: strings, lists and associative arrays but no structures
Tcl and its associated GUI toolkit
run on all flavors of Unix
, Microsoft Windows
. Tcl runs on the Amiga
and many other platforms
Latest version: 8.0.3, as of 1998-09-25.
See also expect
(control interactive programs and pattern match on their output), Cygnus Tcl Tools
, [incr Tcl]
(adds classes and inheritence to Tcl), Scriptics
(John Ousterhout's company that is the home of Tcl development and the TclPro tool suite), Tcl Consortium
(a non-profit agency dedicated to promoting Tcl), tclhttpd
(an embeddable Tcl-based web server), tclx
(adds many commands to Tcl), tcl-debug
comp.lang.tcl FAQ at MIT (ftp://rtfm.mit.edu/pub/usenet-by-group/comp.answers/tcl-faq/). or at purl.org (http://purl.org/NET/Tcl-FAQ/).
Scriptics downloads (http://scriptics.com/software/download.html). Kanji (ftp://srawgw.sra.co.jp/pub/lang/tcl/jp/). Usenet
newsgroups: news:comp.lang.tcl.announce, news:comp.lang.tcl.
["Tcl: An Embeddable Command Language", J. Ousterhout, Proc 1990 Winter USENIX Conf].