The workshop is streamed live here: https://youtu.be/ulGv9OpJvgQ
The HOPE workshop series are intended to bring together researchers interested in the design, semantics, implementation, and verification of higher-order effectful programs. They are informal, consisting of invited talks, contributed talks on work in progress, and open-ended discussion sessions. They are dedicated to John Reynolds, whose work is an inspiration to us all.
The 8th ACM SIGPLAN Workshop on Higher-Order Programming with Effects will take place on Sunday, August 22, 2021, that is, the day before ICFP 2021.
Due to the Covid-19 pandemic, HOPE will take place online only, following the schedule and time-zone of the main ICFP conference.
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 kinds of effects: storage effects, I/O, control effects, concurrency, etc. While effects 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 “tame” or “encapsulate” effects (e.g. monads and handlers, ADTs, ownership types, typestate, first-class events, transactions, Hoare Type Theory, session types, substructural and region-based type systems), and a number of different semantic models and verification technologies have been developed in order to codify and exploit the benefits of this encapsulation (e.g. bisimulations, step-indexed Kripke logical relations, higher-order separation logic, game semantics, various 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 exciting 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 will thus involve a combination of invited talks, contributed talks about work in 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.
This is the 9th edition of the HOPE workshop.
The 8th edition of the workshop was held online due to the Covid-19 pandemic, but would otherwise have been held in Jersey City, New Jersey, in August 2020.
The 7th edition of the workshop was held in St. Louis, Missouri, in September 2018
The 6th edition of the workshop was held in Oxford, United Kingdom, in September 2017
The 5th edition of the workshop was held in Nara, Japan, in September 2016.
The 4th edition of the workshop was held in Vancouver, Canada, in August 2015.
The 3rd edition of the workshop was held in Gothenburg, Sweden, in August 2014.
The 2nd edition of the workshop was held in Boston, Massachusetts, in September 2013.
The 1st edition of the workshop was held in Copenhagen, Denmark, in September 2012.
Sun 22 AugDisplayed time zone: Seoul change
16:00 - 17:30
|Representing Monads with Capabilities|
|Higher-order Programming with Effects and Handlers — with First-Class Functions|
|Computational and Contextual Program Differences: Reasoning About Non-equivalent Effectful Programs in an Higher-Order Scenario|
18:00 - 19:30
|The Functional Machine Calculus|
Willem Heijltjes University of Bath
|Formalising Algebraic Effects with Non-Recoverable Failure|
|Computational calculus: bridging reduction and evaluation|
Claudia Faggian Université de Paris & CNRS, Giulio Guerrieri University of Bath, Riccardo Treglia Università di TorinoFile Attached
20:00 - 21:30
|Higher-Order Asynchronous Effects|
Danel Ahman University of Ljubljana, Matija Pretnar University of Ljubljana, Slovenia, Janez Radešček University of LjubljanaPre-print File Attached
Sam Lindley The University of Edinburgh, UKFile Attached
|A Monad for Shared-State Concurrency|
23:30 - 01:00
|First-class Names for Effect Handlers|
|Tensor Partial Evaluation|
Eli Bingham Broad Institute, Fritz Obermeyer Broad Institute of MIT and Harvard, Yerdos Ordabayev Brandeis University, Du Phan UIUCFile Attached
|Dynamic Scope + Laziness = Counterfactuals|
James Koppel Massachusetts Institute of Technology, USA, Armando Solar-Lezama Massachusetts Institute of Technology, Zenna Tavares Massachusetts Institute of Technology, Xin Zhang Peking UniversityFile Attached
Call for Talk Proposals
We solicit proposals for contributed talks. We recommend preparing proposals 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 read the first two pages of such longer submissions. When submitting talk proposals, authors should specify how long a talk the speaker wishes to give. By default, contributed talks will be around 30 minutes long, but proposals for shorter or longer talks will also be considered. Speakers may also submit supplementary material (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, Oleg Kiselyov (firstname.lastname@example.org) and Ohad Kammar (email@example.com).
Due to the Covid-19 pandemic, HOPE will take place online only.