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

PACMPL (ICFP) seeks contributions on the design, implementations, principles, and uses of functional programming, covering the entire spectrum of work, from practice to theory, including its peripheries. Authors of papers published in this issue of PACMPL will present their work at during the in-person conference, providing an opportunity for researchers and developers to hear about the latest work in functional programming.

Dates
Tracks
Plenary
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Tue 5 Sep

Displayed time zone: Pacific Time (US & Canada) change

08:50 - 09:00
08:50
10m
Welcome
ICFP Papers and Events
Nikhil Swamy Microsoft Research
09:00 - 10:00
Morning keynoteICFP Keynotes / ICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Sam Lindley University of Edinburgh
09:00
60m
Keynote
Programming for the planet
ICFP Keynotes
Anil Madhavapeddy University of Cambridge, UK
10:00 - 10:30
10:30 - 12:00
EffectsICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Ningning Xie University of Toronto
10:30
30m
Talk
A General Fine-Grained Reduction Theory for Effect Handlers
ICFP Papers and Events
Filip Sieczkowski Heriot-Watt University, Mateusz Pyzik University of Wrocław, Dariusz Biernacki University of Wrocław
DOI
11:00
30m
Talk
Modular Models of Monoids with Operations
ICFP Papers and Events
Zhixuan Yang Imperial College London, Nicolas Wu Imperial College London
DOI
11:30
30m
Talk
With or Without You: Programming with Effect Exclusion
ICFP Papers and Events
Matthew Lutze Aarhus University, Magnus Madsen Aarhus University, Philipp Schuster University of Tübingen, Jonathan Immanuel Brachthäuser University of Tübingen
DOI
10:30 - 12:00
Dependent typesICFP Papers and Events at B - Fifth Avenue
Chair(s): James Chapman Input Output
10:30
30m
Talk
Is Sized Typing for Coq Practical?JFP Presentation
ICFP Papers and Events
Jonathan Chan University of Pennsylvania, Yufeng Li University of Waterloo, William J. Bowman University of British Columbia
Link to publication DOI Media Attached
11:00
30m
Talk
Dependently-Typed Programming with Logical Equality Reflection
ICFP Papers and Events
Yiyun Liu University of Pennsylvania, Stephanie Weirich University of Pennsylvania
DOI
11:30
30m
Talk
A Graded Modal Dependent Type Theory with a Universe and Erasure, Formalized
ICFP Papers and Events
Andreas Abel Gothenburg University, Nils Anders Danielsson Chalmers and Gothenburg University, Oskar Eriksson Chalmers and Gothenburg University
DOI
13:30 - 14:30
Afternoon keynoteICFP Keynotes / ICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Nikhil Swamy Microsoft Research
13:30
60m
Keynote
As low-level as possible, but no lower
ICFP Keynotes
Andreas Rossberg Independent
14:30 - 15:00
15:00 - 16:00
Concurrency and distributionICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Satnam Singh Groq
15:00
30m
Talk
Special Delivery: Programming with Mailbox Types
ICFP Papers and Events
Simon Fowler University of Glasgow, Duncan Paul Attard University of Glasgow, Franciszek Sowul University of Glasgow, Simon J. Gay University of Glasgow, UK, Phil Trinder University of Glasgow
DOI Pre-print
15:30
30m
Talk
HasChor: Functional Choreographic Programming for All (Functional Pearl)Functional PearlDistinguished Paper
ICFP Papers and Events
Gan Shen University of California, Santa Cruz, USA, Shun Kashiwa University of California, Santa Cruz, Lindsey Kuper University of California, Santa Cruz
DOI Pre-print
15:00 - 16:00
FixpointsICFP Papers and Events at B - Fifth Avenue
Chair(s): Sam Tobin-Hochstadt Indiana University
15:00
30m
Talk
Combinator-Based Fixpoint Algorithms for Big-Step Abstract Interpreters
ICFP Papers and Events
Sven Keidel TU Darmstadt, Germany, Sebastian Erdweg JGU Mainz, Tobias Hombücher JGU Mainz
DOI
15:30
30m
Talk
More Fixpoints! (Functional Pearl)Functional Pearl
ICFP Papers and Events
Joachim Breitner unaffiliated
DOI Pre-print File Attached
16:30 - 17:30
16:30
35m
Student research contest talks
ICFP Papers and Events
S: Daniel Hillerström Huawei Zurich Research Center, J. Garrett Morris University of Iowa
17:05
25m
Programming contest report
ICFP Papers and Events
18:00 - 19:30

Wed 6 Sep

Displayed time zone: Pacific Time (US & Canada) change

09:00 - 10:00
09:00
60m
Keynote
TypeScript: Static types for JavaScript
ICFP Keynotes
10:00 - 10:30
10:30 - 12:00
Verification 1ICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Tahina Ramananandro Microsoft Research
10:30
30m
Talk
Modularity, Code Specialization, and Zero-Cost Abstractions for Program Verification
ICFP Papers and Events
Son Ho INRIA, Aymeric Fromherz Inria, Jonathan Protzenko Microsoft Research, Redmond
DOI
11:00
30m
Talk
Higher-Order Property-Directed Reachability
ICFP Papers and Events
Hiroyuki Katsura University of Tokyo, Naoki Kobayashi University of Tokyo, Ryosuke Sato University of Tokyo
DOI
11:30
30m
Talk
Verifying Reliable Network Components in a Distributed Separation Logic with Dependent Separation ProtocolsRemote
ICFP Papers and Events
Léon Gondelman Aarhus University, Jonas Kastberg Hinrichsen Aarhus University, Denmark, Mário Pereira NOVA LINCS & DI -- Nova School of Science and Technology, Amin Timany Aarhus University, Lars Birkedal Aarhus University
DOI
10:30 - 12:00
TestingICFP Papers and Events at B - Fifth Avenue
Chair(s): Stephen Dolan Jane Street
10:30
30m
Talk
Reflecting on Random GenerationDistinguished Paper
ICFP Papers and Events
Harrison Goldstein University of Pennsylvania, Samantha Frohlich University of Bristol, Meng Wang University of Bristol, Benjamin C. Pierce University of Pennsylvania
DOI
11:00
30m
Talk
Etna: An Evaluation Platform for Property-Based Testing (Experience Report)Experience Report
ICFP Papers and Events
Jessica Shi University of Pennsylvania, Alperen Keles University of Maryland at College Park, Harrison Goldstein University of Pennsylvania, Benjamin C. Pierce University of Pennsylvania, Leonidas Lampropoulos University of Maryland, College Park
DOI
11:30
30m
Talk
Formal Specification and Testing for Reinforcement LearningRemote
ICFP Papers and Events
Mahsa Varshosaz IT University of Copenhagen, Denmark, Mohsen Ghaffari IT University of Copenhagen, Einar Broch Johnsen University of Oslo, Andrzej Wąsowski IT University of Copenhagen, Denmark
DOI
13:30 - 14:30
Circuits and monoidsICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Patrik Jansson Chalmers University of Technology
13:30
30m
Talk
Timely Computation
ICFP Papers and Events
Conal Elliott Independenet
DOI Pre-print
14:00
30m
Talk
A well-known representation of monoids and its application to the function ‘vector reverse’Functional PearlJFP PresentationRemote
ICFP Papers and Events
Wouter Swierstra Utrecht University, Netherlands
Link to publication DOI
13:30 - 14:30
Meta programmingICFP Papers and Events at B - Fifth Avenue
Chair(s): Gabriel Radanne Inria
13:30
30m
Talk
Embedding by Unembedding
ICFP Papers and Events
Kazutaka Matsuda Tohoku University, Samantha Frohlich University of Bristol, Meng Wang University of Bristol, Nicolas Wu Imperial College London
DOI
14:00
30m
Talk
MacoCaml: Staging Composable and Compilable Macros
ICFP Papers and Events
Ningning Xie University of Toronto, Leo White Jane Street, Olivier Nicole Tarides, Jeremy Yallop University of Cambridge
DOI Pre-print
14:30 - 15:00
15:00 - 16:00
15:00
30m
Talk
Generic Programming with Extensible Data Types: Or, Making Ad Hoc Extensible Data Types Less Ad Hoc
ICFP Papers and Events
Alex Hubers University of Iowa, J. Garrett Morris University of Iowa
DOI Pre-print
15:30
30m
Talk
Typing Records, Maps, and Structs
ICFP Papers and Events
Giuseppe Castagna CNRS; Université Paris Cité
DOI
15:00 - 16:00
Modal FRPICFP Papers and Events at B - Fifth Avenue
Chair(s): Amos Robinson Australian National University, Australia
15:00
30m
Talk
Modal FRP for all: Functional reactive programming without space leaks in HaskellJFP Presentation
ICFP Papers and Events
Patrick Bahr IT University of Copenhagen
Link to publication DOI
15:30
30m
Talk
Asynchronous Modal FRP
ICFP Papers and Events
Patrick Bahr IT University of Copenhagen, Rasmus Ejlers Møgelberg IT University of Copenhagen
DOI Pre-print
16:30 - 17:15
Business meetingICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Nikhil Swamy Microsoft Research
16:30
15m
Awards
Awards
ICFP Papers and Events

File Attached
16:45
5m
JFP at ICFP
ICFP Papers and Events
Gabriele Keller Utrecht University
16:50
5m
Diversity, equality, and inclusion at ICFP
ICFP Papers and Events
Daan Leijen Microsoft Research
16:55
15m
PC Chair's report
ICFP Papers and Events
Sam Lindley University of Edinburgh
File Attached
17:10
5m
ICFP 2024 announcement
ICFP Papers and Events
Marco Gaboardi Boston University
File Attached

Thu 7 Sep

Displayed time zone: Pacific Time (US & Canada) change

10:00 - 10:30
10:30 - 12:00
Language designICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Peter Thiemann University of Freiburg, Germany
10:30
30m
Talk
The Verse Calculus: A Core Calculus for Deterministic Functional Logic ProgrammingDistinguished Paper
ICFP Papers and Events
Lennart Augustsson Epic Games , Joachim Breitner unaffiliated, Koen Claessen Epic Games, Ranjit Jhala Epic Games, Simon Peyton Jones Epic Games , Olin Shivers Epic Games, Guy L. Steele Jr. Oracle Labs, Tim Sweeney Epic Games
DOI
11:00
30m
Talk
FP²: Fully in-Place Functional Programming
ICFP Papers and Events
Anton Lorenzen University of Edinburgh, Daan Leijen Microsoft Research, Wouter Swierstra Utrecht University, Netherlands
DOI Pre-print
11:30
30m
Talk
LURK: Lambda, the Ultimate Recursive Knowledge (Experience Report)Experience Report
ICFP Papers and Events
Nada Amin Harvard University, John Burnham Lurk Lab, François Garillot Lurk Lab, Rosario Gennaro Protocol Labs, Chhi’mèd Künzang Lurk Lab, Daniel Rogozin University College London, Cameron Wong
DOI
10:30 - 12:00
Verification 2ICFP Papers and Events at B - Fifth Avenue
Chair(s): Niki Vazou IMDEA Software Institute
10:30
30m
Talk
Explicit Refinement Types
ICFP Papers and Events
Jad Elkhaleq Ghalayini University of Cambridge, Neel Krishnaswami University of Cambridge
DOI
11:00
30m
Talk
Flexible Instruction-Set Semantics via Abstract Monads (Experience Report)Experience Report
ICFP Papers and Events
Thomas Bourgeat , Ian Clester Georgia Institute of Technology, Andres Erbsen MIT, Samuel Gruetter Massachusetts Institute of Technology, Pratap Singh CMU, Andy Wright MIT, Adam Chlipala Massachusetts Institute of Technology
DOI
13:30 - 14:30
Session typing functional pearlsICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Andrew K. Hirsch University at Buffalo, SUNY
13:30
30m
Talk
Intrinsically Typed Sessions with Callbacks (Functional Pearl)Functional Pearl
ICFP Papers and Events
Peter Thiemann University of Freiburg, Germany
DOI
14:00
30m
Talk
Dependent Session Protocols in Separation Logic from First Principles (Functional Pearl)Functional PearlRemote
ICFP Papers and Events
Jules Jacobs Radboud University Nijmegen, Jonas Kastberg Hinrichsen Aarhus University, Denmark, Robbert Krebbers Radboud University Nijmegen
DOI
13:30 - 14:30
Blame and educationICFP Papers and Events at B - Fifth Avenue
Chair(s): Benjamin C. Pierce University of Pennsylvania
13:30
30m
Talk
How to Evaluate Blame for Gradual Types, Part 2
ICFP Papers and Events
Lukas Lazarek Northwestern University, Ben Greenman Brown University, Matthias Felleisen PLT @ Northeastern University, Christos Dimoulas PLT @ Northwestern University
DOI
14:00
30m
Talk
What Happens When Students Switch (Functional) Languages (Experience Report)RemoteExperience Report
ICFP Papers and Events
Kuang-Chen Lu Brown University, USA, Shriram Krishnamurthi Brown University, United States, Kathi Fisler Brown University, Ethel Tshukudu University of Botswana
DOI
14:30 - 15:00
15:00 - 16:00
15:00
30m
Talk
Calculating Compilers for Concurrency
ICFP Papers and Events
Patrick Bahr IT University of Copenhagen, Graham Hutton University of Nottingham, UK
DOI Pre-print
15:30
30m
Talk
Trustworthy Runtime Verification via Bisimulation (Experience Report)Experience Report
ICFP Papers and Events
Ryan Scott Galois, Inc., Mike Dodds Galois, Inc., Robert Dockins Amazon, Ivan Perez NASA Ames Research Center, Alwyn Goodloe NASA Langley Research Center
DOI Pre-print
15:00 - 16:00
Data representationICFP Papers and Events at B - Fifth Avenue
Chair(s): Lennart Augustsson Epic Games
15:00
30m
Talk
Read/write factorizable programsJFP Presentation
ICFP Papers and Events
Siddharth Bhaskar University of Copenhagen, Jakob Grue Simonsen University of Copenhagen
Link to publication DOI
15:30
30m
Talk
Bit-Stealing Made Legal: Compilation for Custom Memory Representations of Algebraic Data Types
ICFP Papers and Events
Thaïs Baudon ENS de Lyon & LIP, Gabriel Radanne Inria, Laure Gonnord Univ. Grenoble Alpes, Grenoble INP, LCIS, Valence, France
DOI Pre-print Media Attached File Attached
16:30 - 17:30
Fireside chatICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Amal Ahmed Northeastern University, USA
16:30
60m
Other
Fireside chat: Amal Ahmed hosts Felix Klock and Greg Morrisett
ICFP Papers and Events
C: Amal Ahmed Northeastern University, USA, P: Felix Klock Amazon Web Services, P: Greg Morrisett Cornell University
17:45 - 18:15
Ask me anything with Tim SweeneyICFP Papers and Events at A - Grand Ballroom 2
Chair(s): Simon Peyton Jones Epic Games
17:45
30m
Live Q&A
Ask me anything with Tim Sweeney
ICFP Papers and Events
Tim Sweeney Epic Games

Accepted Papers

Title
A General Fine-Grained Reduction Theory for Effect Handlers
ICFP Papers and Events
DOI
A Graded Modal Dependent Type Theory with a Universe and Erasure, Formalized
ICFP Papers and Events
DOI
Asynchronous Modal FRP
ICFP Papers and Events
DOI Pre-print
Bit-Stealing Made Legal: Compilation for Custom Memory Representations of Algebraic Data Types
ICFP Papers and Events
DOI Pre-print Media Attached File Attached
Calculating Compilers for Concurrency
ICFP Papers and Events
DOI Pre-print
Combinator-Based Fixpoint Algorithms for Big-Step Abstract Interpreters
ICFP Papers and Events
DOI
Dependently-Typed Programming with Logical Equality Reflection
ICFP Papers and Events
DOI
Dependent Session Protocols in Separation Logic from First Principles (Functional Pearl)Functional PearlRemote
ICFP Papers and Events
DOI
Diversity, equality, and inclusion at ICFP
ICFP Papers and Events
Embedding by Unembedding
ICFP Papers and Events
DOI
Etna: An Evaluation Platform for Property-Based Testing (Experience Report)Experience Report
ICFP Papers and Events
DOI
Explicit Refinement Types
ICFP Papers and Events
DOI
Flexible Instruction-Set Semantics via Abstract Monads (Experience Report)Experience Report
ICFP Papers and Events
DOI
Formal Specification and Testing for Reinforcement LearningRemote
ICFP Papers and Events
DOI
FP²: Fully in-Place Functional Programming
ICFP Papers and Events
DOI Pre-print
Generic Programming with Extensible Data Types: Or, Making Ad Hoc Extensible Data Types Less Ad Hoc
ICFP Papers and Events
DOI Pre-print
HasChor: Functional Choreographic Programming for All (Functional Pearl)Functional PearlDistinguished Paper
ICFP Papers and Events
DOI Pre-print
Higher-Order Property-Directed Reachability
ICFP Papers and Events
DOI
How to Evaluate Blame for Gradual Types, Part 2
ICFP Papers and Events
DOI
Intrinsically Typed Sessions with Callbacks (Functional Pearl)Functional Pearl
ICFP Papers and Events
DOI
LURK: Lambda, the Ultimate Recursive Knowledge (Experience Report)Experience Report
ICFP Papers and Events
DOI
MacoCaml: Staging Composable and Compilable Macros
ICFP Papers and Events
DOI Pre-print
Modularity, Code Specialization, and Zero-Cost Abstractions for Program Verification
ICFP Papers and Events
DOI
Modular Models of Monoids with Operations
ICFP Papers and Events
DOI
More Fixpoints! (Functional Pearl)Functional Pearl
ICFP Papers and Events
DOI Pre-print File Attached
Reflecting on Random GenerationDistinguished Paper
ICFP Papers and Events
DOI
Special Delivery: Programming with Mailbox Types
ICFP Papers and Events
DOI Pre-print
The Verse Calculus: A Core Calculus for Deterministic Functional Logic ProgrammingDistinguished Paper
ICFP Papers and Events
DOI
Timely Computation
ICFP Papers and Events
DOI Pre-print
Trustworthy Runtime Verification via Bisimulation (Experience Report)Experience Report
ICFP Papers and Events
DOI Pre-print
Typing Records, Maps, and Structs
ICFP Papers and Events
DOI
Verifying Reliable Network Components in a Distributed Separation Logic with Dependent Separation ProtocolsRemote
ICFP Papers and Events
DOI
What Happens When Students Switch (Functional) Languages (Experience Report)RemoteExperience Report
ICFP Papers and Events
DOI
With or Without You: Programming with Effect Exclusion
ICFP Papers and Events
DOI

Call for Papers

PACMPL issue ICFP 2023 seeks original papers on the art and science of functional programming. Submissions are invited on all topics from principles to practice, from foundations to features, and from abstraction to application. The scope includes all languages that encourage functional programming, including both purely applicative and imperative languages, as well as languages with objects, concurrency, or parallelism. Topics of interest include (but are not limited to):

  • Language Design: concurrency, parallelism, and distribution; modularity; components and composition; meta-programming; macros; pattern matching; type systems; type inference; dependent types; effect types; gradual types; refinement types; session types; interoperability; domain-specific languages; imperative programming; object-oriented programming; logic programming; probabilistic programming; reactive programming; generic programming; bidirectional programming.

  • Implementation: abstract machines; virtual machines; interpretation; compilation; compile-time and run-time optimisation; garbage collection and memory management; runtime systems; multi-threading; exploiting parallel hardware; interfaces to foreign functions, services, components, or low-level machine resources.

  • Software-Development Techniques: algorithms and data structures; design patterns; specification; verification; validation; proof assistants; debugging; testing; tracing; profiling; build systems; program synthesis.

  • Foundations: formal semantics; lambda calculus; program equivalence; rewriting; type theory; logic; category theory; computational effects; continuations; control; state; names and binding; program verification.

  • Analysis and Transformation: control flow; data flow; abstract interpretation; partial evaluation; program calculation.

  • Applications: symbolic computing; formal-methods tools; artificial intelligence; systems programming; distributed systems and web programming; hardware design; databases; scientific and numerical computing; graphical user interfaces; graphics and multimedia; GPU programming; scripting; system administration; security.

  • Education: teaching introductory programming; mathematical proof; algebra.

Submissions will be evaluated according to their relevance, correctness, significance, originality, and clarity. Each submission should explain its contributions in both general and technical terms, clearly identifying what has been accomplished, explaining why it is significant, and comparing it with previous work. The technical content should be accessible to a broad audience.

PACMPL issue ICFP 2023 also welcomes submissions in two separate categories — Functional Pearls and Experience Reports — that must be marked as such when submitted and that need not report original research results. Detailed guidelines on both categories are given at the end of this call.

Submissions from underrepresented groups are encouraged. Authors who require financial support to attend the conference can apply for PAC funding (http://www.sigplan.org/PAC/).

The General Chair and PC Chair may not submit papers. PC members (other than the PC Chair) may submit papers. However, SIGPLAN guidelines dictate that they be held to a higher standard: a PC paper can be accepted if after the discussion it has at least one strongly-supportive review and no detractors. Each PC member may be listed as a coauthor on a maximum of three submissions.

Please contact the Programme Chair if you have questions or are concerned about the appropriateness of a topic.

About PACMPL

Proceedings of the ACM on Programming Languages (PACMPL https://pacmpl.acm.org/) is a Gold Open Access journal publishing research on all aspects of programming languages, from design to implementation and from mathematical formalisms to empirical studies. Each issue of the journal is devoted to a particular subject area within programming languages and will be announced through publicised Calls for Papers, like this one.

Preparation of submissions

Deadline: The deadline for submissions is Wednesday, March 1, 2023, Anywhere on Earth (https://www.timeanddate.com/time/zones/aoe). This deadline will be strictly enforced.

Formatting: Submissions must be in PDF format, printable in black and white on US Letter sized paper and interpretable by common PDF tools. All submissions must adhere to the “ACM Small” template that is available (in both LaTeX and Word formats) from https://www.acm.org/publications/authors/submissions.

There is a limit of 25 pages for a full paper or Functional Pearl and 12 pages for an Experience Report; in either case, the bibliography and an optional clearly marked appendix will not be counted against these limits. Submissions that exceed the page limits or, for other reasons, do not meet the requirements for formatting, will be summarily rejected.

See also PACMPL’s Information and Guidelines for Authors at https://pacmpl.acm.org/authors.cfm.

Submission: Submissions will be accepted at https://icfp23.hotcrp.com/

Improved versions of a paper may be submitted at any point before the submission deadline using the same web interface.

Author Response Period: Authors will have a 72-hour period, starting at 12:00 (noon) UTC on Monday, May 1, 2023, to read reviews and respond to them.

Appendix and Supplementary Material: Authors have the option to include a clearly marked appendix and/or to attach supplementary material to a submission, on the understanding that reviewers may choose not to look at such an appendix or supplementary material. Supplementary material may be uploaded as a separate PDF document or tarball. Any supplementary material must be uploaded at submission time, not by providing a URL in the paper that points to an external repository.

Authors are free to upload both anonymised and non-anonymised supplementary material. Anonymised supplementary material will be visible to reviewers immediately; non-anonymised supplementary material (which must be submitted separately) will be revealed to reviewers only after they have submitted their review of the paper and learned the identity of the author(s).

Authorship Policies: All submissions are expected to comply with the ACM Policies for Authorship that are detailed at https://www.acm.org/publications/authors/information-for-authors.

Republication Policies: Each submission must adhere to SIGPLAN’s republication policy, as explained on the web at http://www.sigplan.org/Resources/Policies/Republication.

ORCID: ORCID provides a persistent digital identifier (an ORCID iD) that you own and control, and that distinguishes you from every other researcher: https://orcid.org/. ACM now require an ORCID iD for every author of a paper, not just the corresponding author. So, the author who is filling out the permission form should make sure they have the ORCID iDs for all of their coauthors before filling out the form. Any authors who do not yet have an ORCID iD can go to https://orcid.org/register to have one assigned.

Review Process

This section outlines the two-stage process with lightweight double-blind reviewing that will be used to select papers for PACMPL issue ICFP 2023.

New this year: ICFP 2023 will have an Associate Chair who will help the PC Chair monitor reviews, solicit external expert reviews for submissions when there is not enough expertise on the committee, and facilitate reviewer discussions.

PACMPL issue ICFP 2023 will employ a two-stage review process. The first stage in the review process will assess submitted papers using the criteria stated above and will allow for feedback and input on initial reviews through the author response period mentioned previously. As a result of the review process, a set of papers will be conditionally accepted and all other papers will be rejected. Authors will be notified of these decisions on May 18, 2023.

Authors of conditionally accepted papers will be provided with committee reviews along with a set of mandatory revisions. By June 15, 2023, the authors may provide a second submission. The second and final reviewing phase assesses whether the mandatory revisions have been adequately addressed by the authors and thereby determines the final accept/reject status of the paper. The intent and expectation is that the mandatory revisions can feasibly be addressed within three weeks.

The second submission should clearly identify how the mandatory revisions were addressed. To that end, the second submission must be accompanied by a cover letter mapping each mandatory revision request to specific parts of the paper. The cover letter will facilitate a quick second review, allowing for confirmation of final acceptance within two weeks. Conversely, the absence of a cover letter will be grounds for the paper’s rejection.

PACMPL issue ICFP 2023 will employ a lightweight double-blind reviewing process.

To facilitate this, submitted papers must adhere to two rules:

  1. author names and institutions must be omitted, and

  2. references to authors’ own related work should be in the third person (e.g., not “We build on our previous work …” but rather “We build on the work of …”).

The purpose of this process is to help the reviewers come to an initial judgement 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 anonymised). In addition, authors should feel free to disseminate their ideas or draft versions of their papers as they normally would. For instance, authors may post drafts of their papers on the web or give talks on their research ideas.

Information for Authors of Accepted Papers

  • As a condition of acceptance, final versions of all papers must adhere to the ACM Small format. The page limit for the final versions of papers will be increased by two pages to help authors respond to reviewer comments and mandatory revisions: 27 pages plus bibliography for a regular paper or Functional Pearl, 14 pages plus bibliography for an Experience Report.

  • Authors of accepted submissions will be required to agree to one of the three ACM licensing options, one of which is Creative Commons CC-BY publication; this is the option recommended by the PACMPL editorial board. A reasoned argument in favour of this option can be found in the article Why CC-BY? published by OASPA, the Open Access Scholarly Publishers Association. The other options are copyright transfer to ACM or retaining copyright but granting ACM exclusive publication rights.

  • PACMPL is a Gold Open Access journal, and authors are encouraged to publish their work under a CC-BY license. Gold Open Access guarantees permanent free online access to the definitive version in the ACM Digital Library, and the recommended CC-BY option also allows anyone to copy and distribute the work with attribution. Gold Open Access has been made possible by generous funding through ACM SIGPLAN, which will cover all open access costs in the event authors cannot. Authors who can cover the costs may do so by paying an Article Processing Charge (APC). PACMPL, SIGPLAN, and ACM Headquarters are committed to exploring routes to making Gold Open Access publication both affordable and sustainable.

  • ACM Author-Izer is a unique service that enables ACM authors to generate and post links on either their home page or institutional repository for visitors to download the definitive version of their articles from the ACM Digital Library at no charge. Downloads through Author-Izer links are captured in official ACM statistics, improving the accuracy of usage and impact measurements. Consistently linking to the definitive version of an ACM article should reduce user confusion over article versioning. After an article has been published and assigned to the appropriate ACM Author Profile pages, authors should visit http://www.acm.org/publications/acm-author-izer-service to learn how to create links for free downloads from the ACM DL.

  • The official publication date is the date the papers are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of the conference. The official publication date affects the deadline for any patent filings related to published work.

  • Authors of each accepted submission are invited to attend and be available for the presentation of that paper at the conference. The schedule for presentations will be determined and shared with authors after the full program has been selected.

Artifact Evaluation

Authors of papers that are conditionally accepted in the first phase of the review process will be encouraged (but not required) to submit supporting materials for Artifact Evaluation. These items will then be reviewed by an Artifact Evaluation Committee, separate from the paper Review Committee, whose task is to assess how the artifacts support the work described in the associated paper. Papers that go through the Artifact Evaluation process successfully will receive a seal of approval printed on the papers themselves. Authors of accepted papers will be encouraged to make the supporting materials publicly available upon publication of the papers, for example, by including them as “source materials” in the ACM Digital Library. An additional seal will mark papers whose artifacts are made available, as outlined in the ACM guidelines for artifact badging.

Participation in Artifact Evaluation is voluntary and will not influence the final decision regarding paper acceptance.

Special categories of papers

In addition to research papers, PACMPL issue ICFP solicits two kinds of papers that do not require original research contributions: Functional Pearls, which are full papers, and Experience Reports, which are limited to half the length of a full paper. Authors submitting such papers should consider the following guidelines.

Functional Pearls

A Functional Pearl is an elegant essay about something related to functional programming. Examples include, but are not limited to:

  • a new and thought-provoking way of looking at an old idea

  • an instructive example of program calculation or proof

  • a nifty presentation of an old or new data structure

  • an interesting application of functional programming techniques

  • a novel use or exposition of functional programming in the classroom

While pearls often demonstrate an idea through the development of a short program, there is no requirement or expectation that they do so. Thus, they encompass the notions of theoretical and educational pearls.

Functional Pearls are valued as highly and judged as rigorously as ordinary papers, but using somewhat different criteria. In particular, a pearl is not required to report original research, but, it should be concise, instructive, and entertaining. A pearl is likely to be rejected if its readers get bored, if the material gets too complicated, if too much-specialised knowledge is needed, or if the writing is inelegant. The key to writing a good pearl is polishing.

A submission that is intended to be treated as a pearl must be marked as such on the submission web page and should contain the words “Functional Pearl” somewhere in its title or subtitle. These steps will alert reviewers to use the appropriate evaluation criteria. Pearls will be combined with ordinary papers, however, for the purpose of computing the conference’s acceptance rate.

Experience Reports

The purpose of an Experience Report is to describe the experience of using functional programming in practice, whether in industrial application, tool development, programming education, or any other area.

Possible topics for an Experience Report include, but are not limited to:

  • insights gained from real-world projects using functional programming

  • comparison of functional programming with conventional programming in the context of an industrial project or a university curriculum

  • project-management, business, or legal issues encountered when using functional programming in a real-world project

  • curricular issues encountered when using functional programming in education

  • real-world constraints that created special challenges for an implementation of a functional language or for functional programming in general

An Experience Report is distinguished from a normal PACMPL issue ICFP paper by its title, by its length, and by the criteria used to evaluate it.

  • Both in the papers and in any citations, the title of each accepted Experience Report must end with the words “(Experience Report)” in parentheses. The acceptance rate for Experience Reports will be computed and reported separately from the rate for ordinary papers.

  • Experience Report submissions can be at most 12 pages long, excluding bibliography.

  • Each accepted Experience Report will be presented at the conference, but depending on the number of Experience Reports and regular papers accepted, authors of Experience Reports may be asked to give shorter talks.

  • Because the purpose of Experience Reports is to enable our community to understand the application of functional programming, an acceptable Experience Report need not add to the body of knowledge of the functional-programming community by presenting novel results or conclusions. It is sufficient if the report describes an illuminating experience with functional programming, or provides evidence for a clear thesis about the use of functional programming. The experience or thesis must be relevant to ICFP, but it need not be novel.

The review committee will accept or reject Experience Reports based on whether they judge the paper to illuminate some aspect of the use of functional programming. Anecdotal evidence will be acceptable provided it is well-argued and the author explains what efforts were made to gather as much evidence as possible. Typically, papers that show how functional programming was used are more convincing than papers that say only that functional programming was used. It can be especially effective to present comparisons of the situations before and after the experience described in the paper, but other kinds of evidence would also make sense, depending on context. Experience drawn from a single person’s experience may be sufficient, but more weight will be given to evidence drawn from the experience of groups of people.

An Experience Report should be short and to the point. For an industrial project, it should make a claim about how well functional programming worked and why; for a pedagogy paper, it might make a claim about the suitability of a particular teaching style or educational exercise. Either way, it should produce evidence to substantiate the claim. If functional programming worked in this case in the same ways it has worked for others, the paper need only summarise the results — the main part of the paper should discuss how well it worked and in what context. Most readers will not want to know all the details of the experience and its implementation, but the paper should characterise it and its context well enough so that readers can judge to what degree this experience is relevant to their own circumstances. The paper should take care to highlight any unusual aspects; specifics about the experience are more valuable than generalities about functional programming.

If the paper not only describes experience but also presents new technical results, or if the experience refutes cherished beliefs of the functional-programming community, it may be better to submit it as a full paper, which will be judged by the usual criteria of novelty, originality, and relevance. The Program Chair will be happy to advise on any concerns about which category to submit to.