ICFP/SPLASH 2025
Sun 12 - Sat 18 October 2025 Singapore

The Workshop on Type-Driven Development (TyDe) aims to show how static type information may be used effectively in the development of computer programs. Co-located with ICFP, this workshop brings together leading researchers and practitioners who are using or exploring types as a means of program development.

We welcome all contributions, both theoretical and practical, on a range of topics including:

  • dependently typed programming;
  • generic programming;
  • design and implementation of programming languages, exploiting types in novel ways;
  • exploiting typed data, data dependent data, or type providers;
  • static and dynamic analyses of typed programs;
  • tools, IDEs, or testing tools exploiting type information;
  • pearls, being elegant, instructive examples of types used in the derivation, calculation, or construction of programs.

For information about the TyDe workshop series, see the permanent website.

Plenary

This program is tentative and subject to change.

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Sun 12 Oct

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10:30 - 11:00
10:30
30m
Coffee break
Break
Catering

11:00 - 12:30
Session 1TyDe at Seminar Room 2
11:00
30m
Talk
Representing Data Structures with Invariants in Haskell: the cases of BST and AVL [Remote]
TyDe
Nicolas Rodriguez Instituto de Computación, Universidad de la República, Alberto Pardo Universidad de la Republica, Uruguay, Marcos Viera University of the Republic, Uruguay
11:30
30m
Talk
Towards a Performance Comparison of Syntax and Type-Directed NbE (Extended Abstract) [Remote]
TyDe
Chester Gould University of British Columbia, William J. Bowman University of British Columbia
Pre-print
12:00
30m
Talk
The conatural numbers form an exponential commutative semiring
TyDe
Szumi Xie Eötvös Loránd University (ELTE), Viktor Bense Eötvös Loránd University (ELTE)
Pre-print
12:30 - 14:00
12:30
90m
Lunch
Lunch
Catering

14:00 - 15:30
Session 2TyDe at Seminar Room 2
14:00
30m
Talk
Gradual Metaprogramming
TyDe
Tianyu Chen Indiana University, Darshal Shetty Indiana University, Jeremy G. Siek Indiana University, USA, Chao-Hong Chen Indiana University, Weixi Ma Meta, Arnaud Venet Meta, Rocky Liu Meta
Link to publication DOI Pre-print
14:30
30m
Talk
Unification Modulo Isomorphisms between Dependent Types for Type-based Library Search
TyDe
Satoshi Takimoto Institute of Science Tokyo, Sosuke Moriguchi Institute of Science Tokyo, Takuo Watanabe Institute of Science Tokyo
15:00
30m
Talk
Generating a corpus of Hazel programs from ill-typed OCaml programs (Extended Abstract)
TyDe
Patrick Ferris University of Cambridge, UK, Anil Madhavapeddy University of Cambridge, UK
15:30 - 16:00
15:30
30m
Coffee break
Break
Catering

16:00 - 17:30
Session 3TyDe at Seminar Room 2
16:00
30m
Talk
Constrained generation of well-typed programs (Extended Abstract) [Remote]
TyDe
Hugo Barreiro École Polytechnique, Gabriel Scherer Université Paris Cité - Inria - CNRS
16:30
30m
Talk
Type-Driven Prompt Programming: From Typed Interfaces to a Calculus of Constraints (Extended Abstract) [Remote]
TyDe
Abhijit Paul Samsung R&D Institute, Bangladesh
17:00
30m
Talk
A Formalization of Opaque Definitions for a Dependent Type Theory [Remote]
TyDe
Nils Anders Danielsson University of Gothenburg, Eve Geng Chalmers University of Technology, Gothenburg, Sweden

Call for Papers

The Workshop on Type-Driven Development (TyDe) aims to show how static type information may be used effectively in the development of computer programs. Co-located with ICFP and SPLASH, this workshop brings together leading researchers and practitioners who are using or exploring types as a means of program development.

We welcome all contributions, both theoretical and practical, on a range of topics including:

  • dependently typed programming;
  • generic programming;
  • design and implementation of programming languages, exploiting types in novel ways;
  • exploiting typed data, data dependent data, or type providers;
  • static and dynamic analyses of typed programs;
  • tools, IDEs, or testing tools exploiting type information;
  • pearls, being elegant, instructive examples of types used in the derivation, calculation, or construction of programs.

Important dates

  • Sun 22 Jun 2025 (AoE): Submission deadline for papers and extended abstracts
  • Wed 23 Jul 2025: Notification of acceptance
  • Wed Aug 20 2025: Submission of camera-ready papers to ACM
  • Sun 12 Oct 2025: Workshop

Proceedings and Copyright

We will have formal proceedings for full-length papers, published by the ACM. Accepted papers will be included in the ACM Digital Library. Authors must grant ACM publication rights upon acceptance, but may retain copyright if they wish. Authors are encouraged to publish auxiliary material with their paper (source code, test data, and so forth). The proceedings will be freely available for download from the ACM Digital Library from one week before the start of the conference until two weeks after the conference.

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.

Submission Details

Submissions should fall into one of two categories:

  • regular research papers (12 pages);
  • extended abstracts (3 pages).

The bibliography will not be counted against the page limits for either category.

Regular research papers are expected to present novel and interesting research results, and will be included in the formal proceedings. Extended abstracts should report work in progress that the authors would like to present at the workshop. Extended abstracts will be distributed to workshop attendees but will not be published in the formal proceedings.

We welcome submissions from PC members (with the exception of the two co-chairs), but these submissions will be held to a higher standard.

Submission is handled through HotCRP:

https://tyde25.hotcrp.com

All submissions should be in portable document format (PDF) and formatted using the ACM SIGPLAN style guidelines:

https://www.sigplan.org/Resources/Author/

Note that submissions should use the new ‘acmart’ format and the two-column ‘sigplan’ subformat (not to be confused with the one-column ‘acmsmall’ subformat).

Extended abstracts must be submitted with the label ‘Extended Abstract’ clearly in the title.

Presentations

We expect that each accepted submission is presented at the workshop. Presentations are around 20 minutes plus questions. Remote presentation is possible.

Participant Support

Student attendees with accepted papers can apply for a SIGPLAN PAC grant to help cover participation-related expenses. PAC also offers other support, such as for child-care expenses during the meeting or for accommodations for members with physical disabilities. For details on the PAC program, see its web page:

https://www.sigplan.org/PAC/

Questions? Use the TyDe contact form.