Midterm 2 Solutions

I've added a link to the solutions for Midterm 2 to the class web page.

Unfortunately, there was a small error in the type supplied for the
the readFoldl function in Problem 6, for which I apologize. However,
when one attempts to define the function, the need to supply an
extra "source" argument should become apparent.

Midterm reminder, homework solutions

Remember that the second one-hour, in class midterm exam will be given next Tuesday, Feb 27, at the beginning of class. This will be an open book, open notes exam. It will cover mainly material since the first exam, but also some critical topics from earlier (typechecking!).

I've updated the class web page with the code for the lexer and parser for Exercise 5.7.2 (Homework 3), and the code for the tic-tac-toe program (Homework 4). I'll post Homework 6 (due Feb 27) tomorrow.

Don't forget to email me a note on your proposed final programming project (Due Friday, March 16).