incr Tcl

{{Infobox programming language

| name = Itcl

| logo = 70px

| paradigm = multi-paradigm: object-oriented, functional, Imperative, event-driven programming

| year = 1993

| designer = [http://incrtcl.sourceforge.net/itcl/mmc/index.html Michael McLennan]

| developer = [http://incrtcl.sourceforge.net/itcl/mmc/index.html Michael McLennan]

| latest_release_version = Itcl4.1.1

| latest_release_date = {{start date and age|2017|12|21|df=yes}}

| typing = dynamic typing, everything can be treated as a string

| implementations =

| dialects =

| influenced_by = Tcl, C++

| influenced =

| website = [http://incrtcl.sourceforge.net/itcl/ itcl] at SourceForge

| license = BSD-style

}}

incr Tcl (commonly stylised as [incr Tcl], and often abbreviated to itcl) is a set of object-oriented extensions for the Tcl programming language. It is widely used among the Tcl community, and is generally regarded as industrial strength {{Fact|date=June 2007}}. Its name is a pun on "C++". Itcl implementations exist as both a package that may be dynamically loaded by a Tcl application, as well as an independent standalone language with its own interpreter.

Overview

= Features =

== Namespace support ==

Itcl allows namespaces to be used for organizing commands and variables.

Example:

package require Itcl

itcl::class Toaster {

variable crumbs 0

method toast {nslices} {

if {$crumbs > 50} {

error "== FIRE! FIRE! =="

}

set crumbs [expr $crumbs+4*$nslices]

}

method clean {} {

set crumbs 0

}

itcl::class SmartToaster {

inherit Toaster

method toast {nslices} {

if {$crumbs > 40} {

clean

}

return [chain $nslices]

}

set toaster [SmartToaster #auto]

$toaster toast 2

== C code integration ==

Itcl (like Tcl) has built-in support for the integration of C code into Itcl classes.

References

incr Tcl from the Ground Up by Chad Smith, published in January 2000.

:This is a complete reference manual for incr Tcl, covering language fundamentals, OO design issues, overloading, code reuse, multiple inheritance, abstract base classes, and performance issues. Despite its breadth, it follows a tutorial, rather than encyclopedic, approach. This book is out of print as of September 2004.

External links

[http://incrtcl.sourceforge.net/itcl/ Itcl/incr Tcl project page]
[http://purl.org/tcl/package/itcl/ Tcl package site]
[http://sf.net/projects/tclweb/ tclweb project] (there is a mailing list maintained at this site)

Category:Scripting languages

Category:Dynamically typed programming languages

Category:Tcl programming language family

Category:1993 software