ICFP 2023
Mon 4 - Sat 9 September 2023 Seattle, Washington, United States

The Scheme and Functional Programming Workshop is a yearly meeting of programming language practitioners who share an aesthetic sense embodied by the Algorithmic Language Scheme: universality through minimalism, and flexibility through rigorous design.

Scheme 2023 is scheduled for Saturday, September 9, 2023. Mark your calendars and join us!

This year we welcome Christos Dimoulas from Northwestern University as our keynote speaker. Christos will deliver an engaging talk about The Rational Programmer.

You may access accepted articles in the Scheme 2023 Proceedings.

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Sat 9 Sep

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09:00 - 10:30
SCHEME: Session IScheme at Olympic
Chair(s): Jason Hemann Seton Hall University

09:30 Visualizing Why Nondeterministic Finite-State Automatons Reject, Oliwia Kempinski and Marco T. Morazan

10:00 Visualizing a Nondeterministic to Deterministic Finite-State Machine Transformation, Tijana Minic and Marco T. Morazan

Visualizing Why Nondeterministic Finite-State Automa Reject
A: Oliwia Kempinski , Marco T Morazan Seton Hall University
Visualizing a Nondeterministic to Deterministic Finite-State Machine Transformation
A: Tijana Minic Seton Hall University, Marco T Morazan Seton Hall University
10:30 - 11:00
11:00 - 12:30
SCHEME: Session IIScheme at Olympic
Chair(s): Marco T Morazan Seton Hall University

11:00 The Calysto Scheme Project, James B. Marshall and Douglas Blank

11:30 Keynote Address: The Rational Programmer, Christos Dimoulas

The Calysto Scheme Project
A: James Marshall Sarah Lawrence College, Douglas Blank Bryn Mawr College
The Rational Programmer, An Investigative Method for Programming Language Pragmatics
Christos Dimoulas PLT @ Northwestern University
14:00 - 15:30
SCHEME: Session IIIScheme at Olympic
Chair(s): Jason Hemann Seton Hall University

14:00 A R4RS Compliant REPL in 8Kb, Léonard Oest O’Leary

14:30 Lightning Talk: Designing a Language for Learning Continuations, Youyou Cong

A R4RS Compliant REPL in 8Kb
Léonard Oest O'Leary Université de Montréal
Lightning Talk: Designing a Language for Learning ContinuationsRecorded
Youyou Cong Tokyo Institute of Technology
15:30 - 16:00

Call for Papers

The 2023 Scheme and Functional Programming Workshop Call for Papers

We invite high-quality papers and talk proposals about, for example novel research results, lessons learned from practical experience in an industrial setting, new insights on old ideas, and the use of functional programming in Computer Science education. We welcome and encourage submissions that apply to any dynamic functional language, especially those that can be considered a Scheme: from strict subsets of RnRS to other "Scheme" implementations, to Racket, to Lisp dialects including Clojure, Emacs Lisp, Common Lisp, to functional languages with continuations and/or macros (or extended to have them) such as Dylan, ECMAScript, Hop, Lua, Scala, Rust, etc. The elegance of the paper and the relevance of its topic to the interests of Schemers will matter more than the surface syntax of the examples used.

Proceedings with the preprints of all presented articles will be uploaded to arXiv.org. Publication of preprints at this workshop is not equivalent to a conference or journal publication, and does not preclude re-publication of a more complete or finished version of the paper at some later conference or in a journal.


Topics of interest include (but are not limited to):

  • Interaction: program-development environments, debugging, testing, refactoring
  • Implementation: interpreters, compilers, tools, garbage collectors, benchmarks
  • Extension: macros, hygiene, domain-specific languages, reflection, and how such extension affects interaction
  • Expression: control, modularity, ad hoc and parametric polymorphism, types, aspects, ownership models, concurrency, distribution, parallelism, non-determinism, probabilism, and other programming paradigms
  • Integration: build tools, deployment, interoperation with other languages and systems
  • Formal semantics: theory, analyses and transformations, partial evaluation
  • Human factors: past, present and future history, evolution and sociology of the language Scheme, its standard and its dialects
  • Education: approaches, experiences, curricula both for and out of CS education
  • Applications: industrial uses of Scheme
  • Scheme pearls: elegant, instructive uses of Scheme


  • Submission deadline is 2023-07-14.
  • Authors will be notified by 2023-08-04.
  • Camera-ready versions are due 2023-09-02.
  • Workshop in Seattle, Washington, USA on 2023-09-09 (Saturday).

All deadlines are 23:59 UTC-12, anywhere on Earth.

Submission Information

We encourage all kinds of submissions, including full papers, experience reports, and lightning talks. Papers and experience reports are expected to be 10–24 pages in length using the single-column SIGPLAN acmart style. (For reference, this is about 5–12 pages of the older SIGPLAN 2-column 9pt style.) Abstracts submitted for lightning talks should be limited to 192 words.

At least one author of each accepted submission must attend and be available for the presentation of that paper at the workshop. The schedule for presentations will be determined and shared with authors after the full program has been selected.

The size limits above exclude references and any optional appendices. There are no size limits on appendices, but the papers should stand without the need to read them, and reviewers are not required to read them.

Authors are encouraged to publish any code associated to their papers under an open source license, so that reviewers may try the code and verify the claims.

Please submit papers through: https://scheme2023.hotcrp.com/.

Lightweight double-blind reviewing

Scheme 2023 will use lightweight double-blind reviewing. Submitted papers must omit author names and institutions and reference the authors’ own related work in the third person (e.g., not “we build on our previous work…” but rather “we build on the work of…”).

The purpose is to help the reviewers come to an initial judgment about the paper without bias, not to make it impossible for them to discover the authors if they were to try. Nothing should be done in the name of anonymity that weakens the submission or makes the job of reviewing the paper more difficult (e.g., important background references should not be omitted or anonymized).

Formatting Information

Full papers and experience reports should use the SIGPLAN acmsmall option to acmart. We recommend using the anonymous and review options to acmart when submitting a paper; these options hide the author names and enable line numbers for easy reference in review. LaTeX and Microsoft Word templates for this format are available through SIGPLAN.

Lightning talks can be submitted as either a text file or a PDF file.

Program Committee

  • Leif Andersen, University of Massachusetts Boston
  • Leilani Gilpin, University of California Santa Cruz
  • Mark Friedman, University of San Francisco
  • Jason Hemann, Seton Hall University
  • Julia Lawall, INRIA Paris
  • Marco T. Morazan (chair), Seton Hall University
  • Joseph Politz, University of California San Diego

International Conference on Functional Programming

The Scheme Workshop 2023 is being held as part of this year's International Conference on Functional Programming. Here is the ICFP site for the workshop.


Marco T. Morazan PC Chair

Questions? Use the Scheme contact form.