[CFP, Deadline Extension] HOPE'26: ACM SIGPLAN Workshop on Higher-Order Programming with Effect

Talk proposal deadline for HOPE 2026 is extended to Jun 12, 2026.
Author notification will be on July 3, 2026.

This year, the workshop will be co-located with ICFP'26 (Indiana, US)
and FW'26 (Paris, France).
----------------------------------------------------------------------

                              HOPE 2026

             The 14th ACM SIGPLAN Workshop on
             Higher-Order Programming with Effects

                           August 24, 2026
                   (the day before ICFP 2026)

           https://icfp26.sigplan.org/home/hope-2026


HOPE 2026 aims to bring together researchers interested in the design,
semantics, implementation, and verification of higher-order effectful
programs. It will be*informal*, consisting of invited talks, contributed ta=
lks
on work in progress, and open-ended discussion sessions.

----------------------
Call for Talk Proposals
-----------------------

We solicit proposals for contributed talks. We recommend preparing proposal=
s of
at most 2 pages excluding references, in either plain text or PDF
format. However, we will accept longer proposals or submissions to other
conferences, under the understanding that PC members are only expected to r=
ead
the first two pages of such longer submissions. When submitting talk propos=
als,
authors should specify how long a talk the speaker wishes to give. By defau=
lt,
contributed talks will be 30 minutes long, but proposals for shorter or lon=
ger
talks will also be considered. Speakers may also submit supplementary mater=
ial
(e.g. a full paper, talk slides) if they desire, which PC members are free =
(but
not expected) to read.

We are interested in talks on all topics related to the interaction of
higher-order programming and computational effects. Talks about work
in progress are particularly encouraged. If you have any questions
about the relevance of a particular topic, please contact the PC
chairs, Taro Sekiyama ([email protected]) and Francesco Gavazzo
([email protected]).

Important Note: HOPE=E2=80=9926 will be co-located with ICFP=E2=80=9926
(https://icfp26.sigplan.org/) and FW=E2=80=9926
(https://www.irif.fr/~scherer/events/fpw-2026/announce.html).
Presenters can choose either event to attend in-person. We also
encourage remote participation and will support remote presentations.

Deadline for talk proposals (extended): Jun 12, 2026 (Friday)

Notification of acceptance (extended):  Jul 3, 2026 (Friday)

Workshop:  August 24, 2026, Indiana, United States & Paris, France

The submission website is now open:

           https://hope26.hotcrp.com

---------------------
Workshop Organization
---------------------

Program Committee:

Yuyan Bao (Augusta University)
Rapha=C3=ABlle Crubill=C3=A9 (Aix-Marseille University)
Francesco Dagnino (University of Genova)
Elena di Lavore (University of Oxford)
Francesco Gavazzo (University of Padua)
Cristina Matache (University of Edinburgh)
Ken Sakayori (The University of Tokyo)
Taro Sekiyama (National Institute of Informatics)
Dario Stein (Radboud University)
Niels Voorneveld (Cybernetica)
Zhixuan Yang (University of Exeter)

---------------------
Goals of the Workshop
---------------------

A recurring theme in many papers at ICFP, and in the research of many ICFP
attendees, is the interaction of higher-order programming with various kind=
s of
effects: storage effects, I/O, control effects, concurrency, etc. While eff=
ects
are of critical importance in many applications, they also make code harder=
 to
build, maintain, and reason about. Higher-order languages (both functional =
and
object-oriented) provide a variety of abstraction mechanisms to help =E2=80=
=9Ctame=E2=80=9D or
=E2=80=9Cencapsulate=E2=80=9D effects (e.g. monads and handlers, ADTs, owne=
rship types,
typestate, first-class events, transactions, Hoare Type Theory, session typ=
es,
substructural and region-based type systems), and a number of different sem=
antic
models and verification technologies have been developed in order to codify=
 and
exploit the benefits of this encapsulation (e.g. bisimulations, step-indexe=
d
Kripke logical relations, higher-order separation logic, game semantics, va=
rious
modal logics). But there remain many open problems, and the field is highly
active.

The goal of the HOPE workshop is to bring researchers from a variety of
different backgrounds and perspectives together to exchange new and excitin=
g
ideas concerning the design, semantics, implementation, and verification of
higher-order effectful programs.

We want HOPE to be as informal and interactive as possible. The program wil=
l
thus involve a combination of invited talks, contributed talks about work i=
n
progress, and open-ended discussion sessions. There will be no published
proceedings, but participants will be invited to submit working documents, =
talk
slides, etc., to be made available online.

--=20
Taro Sekiyama