===================== QUESTION
From: curtis@xaostools.com (Curtis Yarvin)
patterns-discussion@cs.uiuc.edu
Subject: patterns in language design?


Is anyone else doing programming-language design from a
pattern-oriented perspective - ie, looking at patterns that are
within the usual level of language support, rather than above it?

====================== ANSWER

Yes, the Demeter Research Group at Northeastern University in
Boston has developed a programming language based on patterns:
The Demeter Programming Language which is based on the Law of Demeter.

My book will be available soon:
=====================================================================
Entitled ``Adaptive Object-Oriented Software: The Demeter Method
with Propagation Patterns'', the book introduces the important
concepts of adaptive software, such as class dictionaries, propagation
patterns and transportation patterns. It presents a simple
process model on how to develop adaptive software.
The book is written for advanced undergraduate students, graduate
students and professionals. The publisher is PWS Publishing
Company, E-mail to Nathan Wilbur (nathan_wilbur@pws.com),
or write to PWS Publishing Company, 20 Park Plaza, Boston, MA  02116.
Available in August 1995.
=====================================================================
An introductory sample chapter of the book is in Communications of the ACM,
May 94, pages 94-101.

The compiler for the pattern language is available by ftp and www. See

http://www.ccs.neu.edu/research/demeter/DemeterTools.txt

The documentation is in:

User's Guide
http://www.ccs.neu.edu/research/demeter/docs/u-guide.ps

Laboratory Guide
http://www.ccs.neu.edu/research/demeter/docs/l-guide.ps

For more information, see:

http://www.ccs.neu.edu/research/demeter
ftp://ftp.ccs.neu.edu/pub/people/lieber/Demeter-interest

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-- Karl Lieberherr