594 Old Announcements
Spring 2007, David Matuszek
|May 1, 2007||The RoboTalk tournament will definitely not take place today (Tuesday). I've been out of town and unable to work on my program. I hope to be ready to run the tournament tomorrow (Wednesday). Watch this space for updates.|
|April 25, 2007||
I'm done adding exam questions. All or nearly all questions will be either from this list, or very similar to questions on the list. The exam will be comprehensive, but will mostly cover material not covered on the midterm.
Contrary to my earlier post, I will be out of town on Monday. Would Tuesday or Wednesday at 4:30 be a better time for the RoboTalk competition? Email me if you have a preference.
If you would like your program included in the competition, please email me; if I don't have enough entries, I'll just choose some at random from student submissions. Plus my own, of course.
|April 25, 2007||
I'm about half done adding questions to my page of Exam questions. I'm posting what I have now, and will do the other half Real Soon Now (hopefully this evening).
My RoboTalk "referree" program is sort of working, but not
well enough to show. My plan is to have it ready by
|April 24, 2007||I have started work on additional exam questions; I should have them done and posted in a day or two.|
|April 19, 2007||
|April 11, 2007||Guest lecturer: Thursday, April 12, Pat Palmer will talk about and compare J2EE (Enterprise Edition) and .NET, Java and C#. (Yes, this will be on the final.)|
|April 11, 2007||The sample RoboTalk program that I posted is not equipped to deal with ENEMYs. If you try to interpret it and it gets into an infinite loop, this is probably the reason.|
|April 11, 2007||
Pizza party postponed!
Because of a study session for Max's exam planned for tomorrow (Thursday) at the same time, attendance at the pizza party is likely to be nil. So we'll try again for next week.
|April 9, 2007||For your interest and enjoyment, I've posted a sample RoboTalk program. If you are still confused by the grammar of the RoboTalk language, this should help.|
|April 9, 2007||Since there is a term paper due in CIT595 on Friday, and an exam in CIT596 the same day, the due date for the RoboTalk assignment will be extended to Sunday, April 15.|
|April 6, 2007||Added a quote (and picture) to the last slide in my gender talk.|
|April 6, 2007||I have posted the next part of the RoboTalk assignment. Note that the due date is this coming Thursday.|
|April 5, 2007||The final exam is Thursday, May 3 (not, as I had thought earlier, May 1), in David Rittenhouse Lab A7.|
|April 4, 2007||
Reminder: Princeton University's Brian W Kernighan, Professor of Computer Science is coming to Penn to speak today, April 4, at 6pm in Heilmeier Hall (a.k.a. Towne 100). There will be sandwiches.
You might as well come to hear this famous computer scientist talk. It's likely to be very interesting, and after all, you have sooo much extra time on your CIT591 assignment!
|April 4, 2007||A note on testing the Parser: I found it desirable
to break up the method
|April 3, 2007||
Extension: I've been too busy with other things
to prepare for the next part of the RoboTalk assignment. Hence,
the current assignment is now due before midnight, Monday
The assignment was unclear about JUnit testing. You should have
JUnit tests for commands other than actions; that is, for
By the way, when you added
|April 2, 2007||
As you probably know, RSI is a common and debilitating problem in the field of computing. This Thursday, April 5, Dr. Karen Kelley, Industrial Hygienist/Laser Safety Officer, will be talking at 6:00 in Heilmeier Hall on:
|April 2, 2007||Max has decided to cancel his Quantum Computing talk for this semester.|
|March 29, 2007||Today's talk is by Frank O'Brien, about the hardware and software for the Apollo guidance computer used in the moon landings, 1969-1972.|
|March 27, 2007||I've now added some details to the current assignment, and posted some support code.|
|March 22, 2007||Good news: Max has agreed to reschedule, rather than cancel, his Quantum Computing talk. We will have the talk April 12, and pizza afterwards.|
|March 22, 2007||Change of plans: Max is cancelling his talk today in favor of the Google Technical Talk at 6:00 PM in Wu & Chen Auditorium. He feels this talk is much more important for MCIT students.|
|March 20, 2007|
|March 20, 2007||
|March 18, 2007||
There have been problems both uploading and downloading
the files for the current assignment. Please see the Code
Problems and Changes page.
|March 15, 2007||Posted: New versions of Token.java, Parser.java, ParserTest.java.
Changes are: Adding
|March 13, 2007||The latest assignment (Parser) has been posted. This is another long one...|
|March 1, 2007||I have posted an expanded list of Exam Questions. The midterm will consist mostly or entirely of questions drawn from this list, possibly with minor variations. The midterm will cover everything up to but not including the lectures on Huffman Encoding and Graphs (that is, through last week).|
|February 28, 2007||Due to Diana's exam and my recent (minor) illness, the due date for the current project is now Thursday, March 1, before midnight.|
|February 26, 2007||
Note: I will be out on sick leave Tuesday and Wednesday, but Saj will teach my class. I do expect to be back on Thursday, for class and pizza.
|February 20, 2007||I have posted the changed grammar, as discussed in class.|
|February 19, 2007||To try to provide better spacing between MCIT exams, I'm moving my midterm to Tuesday, March 13 (just after Spring Break--sorry).|
|February 17, 2007||Yet another necessary change to the grammar: Move an
|February 16, 2007||I've added a page on Recognizer Improvements, which you may find helpful. It does not add any requirements to your assignment.|
|February 15, 2007||
I will talk briefly in class today about a problem in the RoboTalk grammar, and how to resolve it.
I've written a first draft (i.e. beta) of a paper on Recursive Descent Parsing, which you may find useful.
For each of your Recognizer methods, your Javadoc should at least show the BNF rule you are trying to recognize. Since HTML and BNF use many of the same symbols, this can be a nuisance. I've written a little "Htmlizer" program, htmlizer.jar, to help you.
I've set a (tentative) date for the Midterm Exam--Tuesday, February 27.
Don't forget Eric Raymond's talk tonight at 6:00 in Wu & Chen!
|February 14, 2007||The rule for <method call> should be:
|February 12, 2007||I don't think it will come as a surprise to anyone that
the StreamTokenizer doesn't behave exactly as expected. In my
add the lines:
|February 12, 2007||In the assignment I said "Also Import... the files you wrote for the Tokenizer assignment." That's wrong. You need only the four files that I supplied.|
|February 10, 2007||
First corrections to RoboTalk grammar:
|February 9, 2007||
Thursday, February 15
Eric Raymond, open source advocate, will speak on
Eric is the author of The Cathedral and the Bazaar, The Art of UNIX Programming, and is the editor of The New Hacker's Dictionary. He is one of the most influential persons in the Open Source movement, along with Linus Torvalds and Richard M. Stallman.
|February 5, 2007||
|February 4, 2007||
Clarification: My intent was that the children
Also, print should put a single space between items, and no other
spaces. For example,
Correction: When used as an argument to
|January 31, 2007||
Two corrections already in
|January 30, 2007||The fourth assignment has been posted. I didn't include the little drawings of trees, but I think the explanations should be sufficient.|
|January 30, 2007||
Apparently my starter code for the Recursive Drawing Assignment sometimes doesn't redraw when the window is resized to make it larger (but it's okay when you make it smaller). Why this happens is a mystery.
The workaround is easy enough--just add a
|January 29, 2007||
|January 29, 2007||If you are having a hard time with the recursive drawings, here are some suggestions that might help.|
|January 23, 2007||
Here are a couple of things from Saj:
And one from me: Rules for Assignments.
|January 22, 2007||Coincidentally, an acquaintance of mine just posted a link to a random sentence generator on the web. It's pretty good.|
|January 19, 2007||Correction: Your BNF
rules should be kept in a
|January 18, 2007||In response to student questions, I've added a page on Sentence assignment clarifications, to try to explain the assignment better.|
|January 18, 2007||On Thursday, January 25, CIT594 will meet in Towne 337.|
|January 16, 2007||I made a few minor changes and corrections to my Expression Evaluator Applet. (I had forgotten to handle unary plus, among other things.). The new Enter button is redundant with the Enter key, and there is now a button to clear all assignments that have been made to variables.|
|January 11, 2007||
I've made some minor modifications to the ExpressionEvaluation assignment:
|Jan 6, 2007||If you did not attend CIT591 in Fall 2006, read this. (Also recommended for those who did take CIT591 this past Fall.)|