Manifest: Thursday 24 February 2000

Assignments Due
Monday, 28 Feb 11:59pm	Position Paper 3: CLUs about Ada
Tuesday, 29 Feb noon	Send one (previously asked for three) question or comment about Viega paper (see 17 Feb Manifest)
Thursday, 2 March in class	Problem Set 2: Types
Thursday, 2 Mar (5pm)	Prosecution Attorneys only - Charges, Witness List and Exhibits

Your task today is to design Nutscrape Webagator, a fully-functional web browser. Your design should be as elegant and extensible as possible using the assigned language. The task of the web browser is to display and provide user interactions with different kinds of elements including plain HTML, pictures, buttons (with a click action) and edit controls (that can enter text and have a submit action). In addition, the browser has a menu bar and button bar. Show the general design, and explicitly what happens when the user redisplays the window. You should aim to produce both a high-level design and some examples of real code excerpts. What limitations or difficulties of your assigned language do you have to overcome in your design?

Each group will present their design at the end of class today. The goal of your presentation is to convince Nutscrape that they should use your design and the language assigned to your group to build their next browser.

The groups are:

CLU-ful Wanderers Song Li Geoff Stoker Andrea Rowan Avneesh Saxena Hexin Wang

C++-ophiles Yannick Loitere Seejo Sebastine Jianrong Zhang Michael Walker Ying Lu

Java Junkies Mike Smoot Michele Co Greg Yukl Yu Lin Joel Winstead

Eiffel and Eicant Getup-ers David Larochelle Bill Huang Anir De Jinze Liu Pinchao Lu

Sather Sages Jeffrey Harry Peixian Li Yves Lepouchard Yiting Nan Jamie McCliggott

Note: we didn't read papers on C++ or Java; you were assigned to these groups based on your registration surveys.

No new readings. See 17 Feb Manifest for readings due on 29 Feb.

The 17 Feb Manifest requested three questions or comments about Viega's paper. You only need to send me one question or comment, but make it a good one.

• What language features enable more elegant designs?
• Is multiple inheritance useful?
• What are some features of Eiffel and Sather that might be considered improvements over Java or C++? What are features that might be problematic?
• What are the differences between the typing rules for overriding methods in Eiffel and Java? What are the advantages and disadvantages of each approach?
• How can program designers work around inadequate languages?

University of Virginia CS 655: Programming Languages

cs655-staff@cs.virginia.edu Last modified: Thu Mar 29 11:52:26 2001