CSCI.4430/6430 Programming Languages-- Fall 2017

Instructor:  Carlos Varela
Office:  Lally 308 (x 6912)
Office Hours:  Tuesdays and Fridays, 12:30-1:45pm; or by appointment
Meeting Place:  Sage 3303
Meeting Hours:  Tuesdays and Fridays 2:00-3:50pm
TAs: John Angel(50%), Spencer Norris, Brandon Thorne, and Avi Weinstock
TAs' Office Hours:
Mentors: Melissa Lindquist, Christian Encarnacion, Daniel Haynes, Zachary Maurer, Nathan Siviy, and Yifan Xu.
Home page
LMS Home Page:
Use LMS to submit your assignments, check your grades, and post/answer questions in the discussion forums.
To contact the instructor and TAs about the course, please email:

Course Description

This course will enable students to understand essential aspects of programming languages --e.g., theoretical foundations, syntax, semantics, data abstraction, control abstraction, types, scope of variables, and expression evaluation mechanisms.  Students will be exposed to different programming paradigms (computation models) including functional programming, concurrent programming, and logic programming. Students will write programming assignments in Oz, Haskell, SALSA, Erlang and/or Prolog.


CSCI.2300 Introduction to Algorithms and CSCI.2600 Principles of Software.

Course Themes

Programming Language Essentials. Functional, Concurrent, and Logic Programming Paradigms.

Learning Outcomes

When the students have successfully completed this course, they will be able to:

Course Contents

  1. Introduction
  2. Functional Programming
  3. Concurrent Programming
  4. Logic Programming

Tentative Course Syllabus

Date Topic Handouts Chapter/Section
09/01 Introduction to programming languages:  history, essentials, syntax, semantics, paradigms. ppt pdf PDCS Chapter 2
09/05 Lambda calculus:  alpha-renaming, beta-reduction, applicative and normal evaluation orders, Church-Rosser theorem, combinators, booleans ppt pdf functions.oz functions.hs combinators.oz combinators.hs eta.oz eta.hs PDCS Chapter 2
09/08 Lambda calculus: higher order programming, eta-conversion, recursion combinator, numbers, Church numerals
ppt pdf rec.oz lambda-numbers.oz lambda-numbers.hs lambda-booleans.oz lambda-booleans.hs hop.oz hop.hs seq.oz PDCS Chapter 2
09/12 Functional programming: lists, records, pattern matching, recursion (Haskell, Oz)
Programming Assignment 1 Due 09/25
PA1 description PA1 description (pdf)
ppt pdf pascal.oz pascal.hs lists.oz lists.hs comb.oz comb.hs nth.hs nth.oz
CTM Sections 1.1-1.7, 3.2, 3.4.1-3.4.2, 4.7.2
09/15 Higher order programming: closures, procedural abstraction, genericity, instantiation, embedding. ppt pdf sqrt.oz sqrt.hs CTM Chapters 3.2 and 3.6.1
09/19 Control abstractions: map, reduce, iterate, fold, filter ppt pdf explicit-lazy.oz mapreduce.oz iscombinator.oz iscombinator.hs mapreduce.hs CTM Sections 1.9, 3.6, 4.7
09/22 Lazy evaluation, infinite data structures, set comprehensions pdf ppt lazy-eval.hs lazy-eval.oz CTM Chapters 1.8 and 4.5
09/26 Type checking and type inference, abstract data types, monads pdf ppt stack.oz stack.hs list-monad.hs count-monad.hs type-limitations.hs CTM Chapters 2.8.3 and 3.7, EPL Chapter 4, GIH Section 9, PFPL Chapter 16-17
09/29 Review for Exam 1 pdf ppt Lazy Functional State Threads
You could have invented monads
Exam 1
10/06 Actors:  a model of concurrent computation pdf ppt PDCS Chapter 4
10/13 Actor programming languages (SALSA, Erlang) pdf ppt Cell.salsa CellTester.salsa cell.erl cellTester.erl PDCS Chapter 9, CPE Chapter 5
10/17 Concurrency control abstractions
Programming Assignment 2 Due 10/30
PA2 description PA2 description (pdf)

All ppt pdf

fibonacci/Fibonacci.salsa fibonacci/Calculator.salsa

jcfib/fib.salsa jcfib/JoinCont.salsa jcfib/FibTester.salsa


jctreeprod/TreeProduct.salsa jctreeprod/JoinCont.salsa jctreeprod/TreeProductTester.salsa

treeprod/JoinTreeProduct.salsa treeprod/JoinTreeProductTester.salsa

fibonacci.erl treeprod.erl
PDCS Chapter 9, CPE Chapter 5
10/20 Distributed systems abstractions
All ppt pdf

dcell/Cell.salsa dcell/CellTester.salsa dcell/GetCellValue.salsa

dcell.erl dcellClient.erl dcellTester.erl

addressbook/AddressBook.salsa addressbook/AddUser.salsa addressbook/GetEmail.salsa addressbook/GetName.salsa

addressbook.erl addressbook_client.erl
PDCS Chapter 9, CPE Chapter 6
Mobility (SALSA) and fault-tolerance (Erlang) abstractions; garbage collection, visualization (SALSA), hot code loading (Erlang) ppt pdf



squares/Square.salsa squares/SumSquares.salsa

dsquares/Square.salsa dsquares/SumSquares.salsa

dsquares.erl squares.erl addressbook_exception.erl


addressbook.erl addressbook_client.erl
PDCS Chapter 9, CPE Chapter 7
10/27 Object-oriented programming: inheritance, polymorphism (Oz, Java) ppt pdf


mm/ dd/ dd/ dd/
CTM 6.1-6.4.4, CTM 7.1-7.2
Declarative concurrency: dataflow variables, suspendable statements (Oz) ppt pdf dconcurrency.oz CTM 4
11/03 Review for Exam 2 pdf ppt
Exam 2
11/10 Predicate calculus, first-order logic, Horn clauses, Clocksin-Mellish procedure. ppt pdf PLP 11
Terms, resolution, unification, search, backtracking (Prolog); Relational computation model (Oz). pdf ppt students.oz rainy.oz PLP 11, CTM 9.1
Prolog imperative control flow: cut(!), call, fail, not, repeat, findall. Closed-world assumption, generate-and-test. Lists, append relation (Prolog, Oz)
Programming Assignment 3 Due 11/30
PA3 description PA3 description (pdf)

pdf ppt family.oz append.oz
PLP 11, CTM 9.3.2-9.3.4.
Constraint satisfaction problems: propagate-and-search; natural language parsing: definite clause grammars pdf ppt constraints.oz propagate-search.oz digit.oz PLP 11, CTM 9.2, 9.4, 12.1-12.2
11/28 Prolog I/O, equalities, types, operators; Databases: assert, retract
pdf ppt member.oz graph-db.oz PLP 11, CTM 9.6
12/01 Accumulators, difference lists
pdf ppt accumulators.oz dlists.oz CTM 3.4.3-3.4.4
12/05 Constraint programming: computation spaces
pdf ppt rectangle.oz palindrome.oz sendmoremoney.oz CTM 12.3-12.5
12/08 Review for Exam 3 pdf ppt
Exam 3

Reading Material



The course consists of three main parts, covering respectively functional, concurrent, and logic programming. Evaluation for each part includes a programming assignment and a partial exam.

For functional programming, we will use Haskell and Oz. For concurrent programming, we will use SALSA and Erlang. For logic programming, we will use Prolog and Oz. You must understand both languages to be prepared for exams. However, you can choose any of the two supported programming languages per paradigm for programming assignments, or even your own (but do not expect help from the instructor or TAs if you choose your own). Programming assignments can be done either individually or in pairs. Do not show your code to any other group and do not look at any other group's code. Do not put your code in a public directory or otherwise make it public. You are encouraged to use the LMS Discussions page to post questions so that other students can also answer/see the answers. There will be three grace days for late submissions throughout the semester, to be used in any combination of PAs, e.g., PA1 may be one day late and PA3 may be two days late, as long as PA2 was submitted on time. Late assignments beyond the three day grace period will receive a grade of 0.

Students may use for reference during exams: physical textbooks, printed course slides, and one personal one-sided crib sheet. No electronics will be allowed. All exam answers must be the student's own. Exam grades may be curved.

We will use an adaptive weighting scheme for grades: The best two programming assignments will have a total grade weight of 40% (20% each), while the third one will have a weight of 10%. We will use the same adaptive weighting scheme for partial exams: the best two exam grades will be worth 40% of the total grade with the third one counting for 10% of the total grade. Final letter grades will then be assigned as follows:

Letter Grade Range
A [90-100]
A- [86.67-90)
B+ [83.33-86.67)
B [80-83.33)
B- [76.67-80)
C+ [73.33-76.67)
C [70-73.33)
C- [66.67-70)
D+ [63.33-66.67)
D [60-63.33)
F [0-60)

Academic Integrity

The Rensselaer Handbook of Student Rights and Responsibilities defines several types of academic dishonesty, all of which are applicable to this class.  Students found in violation of academic dishonesty policies will receive a failing grade for this course. Please contact the instructor if there is any question about academic (dis)honesty.

Last Updated -- September 1st, 2017.