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.

External links

• tcl package site (http://purl.org/tcl/package/itcl/)
• tclweb project (http://sf.net/projects/tclweb/) (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.