incr Tcl (the name is a pun on "C++", 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 regarded as industrial strength. Object-oriented programming (OOP) is a computer programming paradigm in which a software system is modeled as a set of objects that interact with each other. ... Tcl (originally from Tool Command Language, but nonetheless conventionally rendered as Tcl rather than TCL; and pronounced like tickle) is a scripting language created by John Ousterhout that is generally thought to be easy to learn, but powerful in the right hands. ...
External links
tcl package site
tclweb project (there is a mailing list maintained at this site)
References
A book, published in January,2000: "incr Tcl from the Ground Up" by Chad Smith
this is a complete reference manual for itcl, 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.
Tcl is specially designed to make it extremely easy to extend the language by the addition of new primitives in C. These new primitives are truly first-class citizens of the language, sharing the same error handling and memory management as the original primitives.
Tcl supports event-driven programming (required for GUI programming) with the ability to associate Tcl code with any variable or array element (the code is executed automatically whenever the variable is read or written).
[incrtcl] is a pun on C++: "[incrtcl]" is the Tcl idiom for incrementing a variable.
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