SPLASH 2021
Sun 17 - Fri 22 October 2021 Chicago, Illinois, United States
Tue 19 Oct 2021 11:35 - 11:50 at Zurich E - Type Systems Chair(s): Chris Martens

Bugs that are detected earlier during the development lifecycle are easier and cheaper to fix, whereas bugs that are found during production are difficult and expensive to address, and may have dire consequences. Type systems are particularly effective at identifying and preventing bugs early in the development lifecycle by causing invalid programs to result in build failure. Liquid Types are more powerful than those found in mainstream programming languages, allowing the detection of more classes of bugs. However, while Liquid Types were proposed in 2008 with their integration in ML and subsequently introduced in C (2012), Javascript(2012) and Haskell(2014) through language extensions, they have yet to become widely adopted by mainstream developers. This paper investigates how Liquid Types can be integrated in a mainstream programming language, Java, by proposing a new design that aims to lower the barrier to entry and adapts to problems that Java developers commonly encounter at runtime. To promote accessibility, we conducted a series of developer surveys to design the syntax of LiquidJava, our prototype. To evaluate the prototype’s usability, we conducted a user study of 30 Java developers, concluding that users intend to use LiquidJava and that it helped to find more bugs and debug faster.

Tue 19 Oct

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

10:50 - 12:10
Type SystemsHATRA at Zurich E
Chair(s): Chris Martens North Carolina State University
10:50
15m
Talk
Human Aspects of SASyLF, an Educational Proof Assistant for Type Theory
HATRA
Jonathan Aldrich Carnegie Mellon University
Pre-print
11:05
15m
Talk
An Empirical Study of Protocols in Smart Contracts
HATRA
Timothy Mou Swarthmore College, Michael Coblenz University of Maryland at College Park, Jonathan Aldrich Carnegie Mellon University
Link to publication
11:20
15m
Talk
Position Paper: Goals of the Luau Type System
HATRA
Lily Brown Roblox, Andy Friesen Roblox, Alan Jeffrey Roblox
Link to publication
11:35
15m
Talk
User-driven design and evaluation of Liquid Types in Java
HATRA
Catarina Gamboa LASIGE, Faculdade de Ciências da Universidade de Lisboa, Paulo Santos LASIGE, Faculdade de Ciências da Universidade de Lisboa, Christopher Steven Timperley Carnegie Mellon University, Alcides Fonseca LASIGE, Faculdade de Ciências da Universidade de Lisboa
Pre-print
11:50
20m
Meeting
Paper discussion, session 1
HATRA