Instructor  Dr. J. Garrett Morris 
garrettm@ku.edu  
Office  Eaton 2028 
Office hours  MW 1—3 PM, and by appointment 
Course websites  http://ittc.ku.edu/~garrett/eecs662f17/ http://piazza.com/ku/fall2017/eecs662/home 
Lectures  Learned Hall 3151, 8:00—8:50 AM 
The syllabus is available here
11/17  I'll be away on the first of December; a guest lecture will be delivered by Justin Dawson.  
11/6  Homework 4 has been posted  
10/23 
Homework 3 has been posted. Midterm sample solutions are available. Homework 2 sample solutions are available. 

9/29  Homework 2 and the homework 1 solutions have been posted  
9/20  The homework 1 due date has been extended to 9/29.  
9/19  Access to the solutions is now limited to students in the course. If you are enrolled in the course, you should be able to access the solutions using your KU ID. Please let me know if you have trouble.  
9/11 
There will be a couple of Haskell labs this week and next week, scheduled as follows: These are optional sessions to review Haskell programming (and functional programming in general), and to answer any questions you may have.
If you would like to come to one of the labs, but cannot make any of the scheduled times, please get in touch (soon). 

9/6  Homework 0 solutions and homework 1 posted.  
9/1  I'll be away from the 1st through the 10th of Septembers. Lectures on 9/6 and 9/8 will be delivered by Adam Petz.  
8/23  Homework 0 has been updated: Aces in Blackjack are worth either 1 or 11 points, not either 1 or 10 points.  
8/21  Homework 0 is posted!  
8/19  There will be no office hours on Monday, August 21st. Office hours will resume as scheduled on Wednesday, August 23rd. 
Number  Due date  Download  Sample solutions 
0  Friday, September 1st, 8:00 AM  Hw0.hs  Hw0Solutions.hs 
1  Friday, September 29th, 8:00 AM 
Specification Distribution 
Hw1Solutions.zip 
2  Friday, October 13, 8:00 AM 
Specification Distribution 
With andThen With >>= 
3  Friday, November 3, 8:00 AM 
Specification Distribution 

4  Wednesday, December 6, 11:00 AM 
Specification Distribution 
Practice problems for the final exam are available here. I will add new practice problems as we meet new topics in the rest of the semester. (Last updated: 11/6)
date  topics  code  other 
8/21 
Introductions Course objectives 
Homework 0 out  
8/23 
Arithmetic expressions and their interpretation Desugaring PLIH: "Arithemetic expression" and "Simple elaborator" 
Arith0.hs  
8/25 
Adding Booleans Type errors and type checking Monadic notation for Maybe PLIH: "Adding Booleans" and "Monadic redux" 
Arith1.hs  
8/28 
Adding let Substitution Callbyname and callbyvalue (without calls yet) Formal notation for evaluation PLIH: "Formal systems" and "Adding identifiers" 
Arith2.hs  
8/30 
Untyped functions Typing let PLIH: no readings. 
Ulc0.hs  
9/1  Types for functions PLIH: "Function types" 
Stlc0.hs  
9/6  Substitutions and environments  Homework 1 out  
9/8 
Substitutions and environments Products PLIH: Adding environments 

9/11 
Products Currying and uncurrying Higherorder functions PLIH: Currying Notes on currying 
Stlc1.hs 

9/13 
Static and dynamic scope PLIH: Scoping Notes on environments and scoping 
Blc.hs 

9/15 
Recursion and fixed points Recapitulate STLC PLIH: "Untyped recursion", "Typed recursion" Notes on recursion and fixed points 
Stlc2.hs 

9/18  Exceptions  Lcex.hs  
9/20 
The unit type (see Stlc3.hs) State as an effect 
Stlc3.hs Lcst0.hs 

9/22 
State as an effect (see Lcst1.hs) Generalizing effects (see Lcst2.hs) 
Lcst1.hs Lcst2.hs 

9/25 
Generalizing effects Type classes 
Lcex1.hs Classes.hs Lcst3.hs 

9/27 
Generalizing effects Monads Also, a diversion on defining the integers 
Lcex2.hs Nat.hs 

9/29  Homework discussion  Homework 2 out  
10/2 
Homework 2 discussion From effects to monads 
Lcex3.hs  
10/4 
Monads The state monad 
Lcex4.hs Lcst5.hs 

10/6 
The state monad Combining state and exceptions 
Lcst6.hs Lcsx0.hs  
10/9 
Combining state and exceptions The writer monad Combining writing and exceptions 
Lcsx1.hs Lcw.hs Lcwx.hs 

10/11 
Type and effect systems Notes on effects 

10/13  Proofs, programs, and the CurryHoward correspondence.  
10/18  Midterm review  
10/20  Midterm  
10/23 
Midterm discussion Homework 3 discussion 
Homework 3 out  
10/25 
Subsumption and subtyping Notes on subsumption and subtyping 

10/27 
Subsumption and subtyping Implementing subtyping 

10/30 
Implementing subtyping Lcef1.hs contains Pos, a subtype of Int 
Lcef0.hs Lcef1.hs 

11/3 
HindleyMilner polymorphism Notes on same 

11/6  Implementing HM  Homework 4 out  
11/8 
GirardReynolds polymorphism Type abstraction and type application Notes on same 

11/10 
Implementing GR Encoding products 
Grlc.hs  
11/13 
Encoding products Encoding sums Also described in the Notes on GR polymorphism. 

11/15 
Recursion Folds over naturals and lists 

11/17 
Folds over naturals and lists Type operators and fixed points 