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Less than two weeks to submit your papers to Scala Symposium. This year, it is collocated with ECOOP’24 Conference : 2022.ecoop.org/home/scala-eco…

Richard Bird passed away last night, after a long illness. He was hugely influential in FP, including Haskell, and in MPC. He will be remembered for the elegance of his work and his writing. He was also my supervisor, my colleague, and my friend, and I will miss him greatly.

Our last session for today's #VCOOP22 event will feature a talk on Union Types with Disjoint Switches by Baber Rehman, Xuejing Huang, Ningning Xie & Bruno C. d. S. Oliveira. 2022.ecoop.org/program/progra…

I suppose I don’t need to announce new papers anymore now that I have got jobs, but still: - First class names for effect handlers (oopsla22) with Youyou Cong, Kazuki Ikemori, and Daan Leijen - Applicative intersection types (aplas22) with Xu Xue and Bruno Oliveira

So excited that our paper “Compositional Embeddings of Domain-Specific Languages” is accepted to OOPSLA’22! Our artifact is available at plground.org. Thanks to research intern Utkarsh Dhandhania and my advisor Bruno Oliveira!

10 years, ago! 1 prof then; 9 profs now.

.L presenting F^µ_≤≥, a new decidable type system with recursive subtyping and (upper and lower) bounded quantification at #popl2023! github.com/juda/Recursive…

New blog post: Type Safety in 10 Easy, 4 Medium, and 1 Hard Lemma using Step-indexed Logical Relations (in Agda) siek.blogspot.com/2023/04/type-s…

Brevity v0.10.0 released. This one was a heavy lift. Most notable changes are - "type" (guard) checking - Object-Algebras - solving the Family Polymorphism expression problem npmjs.com/package/@mlhau…

New blog post: the Gradual Guarantee via step-indexed logical relations (in Agda) siek.blogspot.com/2023/05/gradua…

New paper w/ Shriram Krishnamurthi (primary: Bluesky), conditionally accepted to POPL'24: how do document languages compose content and computation? The key mechanism is the *template*, which we model by extending to System F to create the *document calculus*. arxiv.org/abs/2310.04368

Follwing up on the discussion on the expression problem, another post: bit.ly/freeObjectAlge…

New paper: Wenjia Ye and Bruno C.D.S. Oliveira present a new method of giving semantics to gradually typed languages, using type-directed operational semantics, where type annotations become operationally relevant. cambridge.org/core/journals/…

I believe I solved the #expression #problem in my #practical #API #design book (chapter 18) in the Java language. However I am thrilled to read about #compositional #programming approach: i.cs.hku.hk/~bruno/papers/…

Yaozhu Sun presenting Imperative Compositional Programming: Type Sound Distributive Intersection Subtyping with References via Bidirectional Typing

QuickSub: Efficient iso-recursive subtyping. ~ Litao Zhou, Bruno C.D.S. Oliveira. ltzhou.com/static/POPL25e… #ITP #Coq #Rocq

Litao Zhou, Yaoda Zhou, Qianyong Wan and Bruno C.D.S. Oliveira present a new calculus extending F_≤ (a calculus w/ bounded quantification) with isorecursive types, tackling the tricky combination of subtyping, recursive types, and bounded quantification. cambridge.org/core/journals/…

Do you know that a system paper might be worth 3 AI papers in computer science according to some dubious metric? I launched an interactive website to measure the relative effort spent on one top-tier paper in each computer science field. cspubs.org

Finally I defended my PhD thesis today! My sincere gratitude is due to my supervisor Bruno Oliveira! Also thanks my labmates for the past five years!

Very proud to receive the ACM SIGPLAN Distinguished Paper Award at PLDI '25 with Andong Fan and Han Xu! Please come to our talk tomorrow morning! It's going to be exciting! pldi25.sigplan.org/details/pldi-2…