This book constitutes the refereed proceedings of the 4th Asian Symposium on Programming Languages and Systems, APLAS 2006, held in Sydney, Australia in November 2006. The 22 revised full papers presented together with 2 invited talks and 1 tutorial examine foundational and practical issues in programming languages and systems.

This book constitutes the refereed proceedings of the 13th Asian Symposium on Programming Languages and Systems, APLAS 2015, held in Pohang, South Korea, in November/December 2015. The 24 regular papers presented together with 1 short paper were carefully reviewed and selected from 74 submissions. The papers cover a variety of foundational and practical issues in programming languages and systems and have been organized in topical sections on compilers, separation logic, static analysis and abstract interpretation, Hoare logic and types, functional programming and semantics, model checking, program analysis, medley, and programming models.

This book constitutes the refereed proceedings of the 5th Asian Symposium on Programming Languages and Systems, APLAS 2007, held in Singapore, in November/December 2007. The 25 revised full papers presented together with three invited talks were carefully reviewed and selected from 84 submissions. The symposium addresses all issues in programming languages and systems - ranging from foundational to practical issues. The papers focus on a broad range of topics.

This book constitutes the refereed proceedings of the 19th European Symposium on Programming, ESOP 2010, held in Paphos, Cyprus, in March 2010, as part of ETAPS 2010, the European Joint Conferences on Theory and Practice of Software. The 30 revised full papers, presented together with two invited talks (one abstract and one full), were carefully reviewed and selected from 121 full paper submissions. The topics addressed include programming paradigms and styles, methods and tools to write and specify programs and languages, methods and tools for reasoning about programs, methods and tools for implementation, and concurrency and distribution.

This book constitutes the refereed proceedings of the 21st Asian Symposium on Programming Languages and Systems, APLAS 2023, held in Taipei, Taiwan, during November 26–29, 2023. The 15 full papers included in this book are carefully reviewed and selected from 32 submissions. They were organized in topical sections as follows: semantics, logics, and foundational theory; design of languages, type systems, and foundational calculi; domain-specific languages; compilers, interpreters, and abstract machines; program derivation, synthesis, and transformation; program analysis, verification, and model-checking; logic, constraint, probabilistic, and quantum programming; software security; concurrency and parallelism; tools and environments for programming and implementation; and applications of SAT/SMT to programming and implementation.

This volume contains the proceedings of the 6th Asian Symposium on Progr- ming Languages and Systems (APLAS 2008), which took place in Bangalore, December 9 – December 11, 2008. The symposium was sponsored by the Asian Association for Foundation of Software (AAFS) and the Indian Institute of S- ence. It was held at the Indian Institute of Science, as part of the institute's centenary celebrations, and was co-located with FSTTCS (Foundations of So- ware Technology and Theoretical Computer Science) 2008, organized by the Indian Association for Research in Computer Science (IARCS). In response to the call for papers, 41 full submissions were received. Each submission was reviewed by at least four Program Committee members with the help of external reviewers. The ProgramCommittee meeting was conducted electronically over a 2-week period. After careful discussion, the Program C- mittee selected 20 papers. I would like to sincerely thank all the members of the APLAS 2008 Program Committee for their excellent job, and all the external reviewers for their invaluable contribution. The submission and review process was managed using the EasyChair system. In addition to the 20 contributed papers, the symposium also featured three invitedtalksbyDinoDistefano(QueenMary,UniversityofLondon,UK),Radha Jagadeesan (DePaul University, USA), and Simon Peyton-Jones (Microsoft - search Cambridge, UK). Many people have helped to promote APLAS as a high-quality forum in Asia to serveprogramminglanguageresearchersworldwide.Following a seriesof well-attendedworkshopsthatwereheldinSingapore(2000),Daejeon(2001),and Shanghai (2002), the ?rst ?ve formal symposiums were held in Beijing (2003), Taipei (2004), Tsukuba (2005), Sydney (2006), and Singapore (2007).

The 23 papers presented together with 4 invited papers 2 system and tool presentations and 1 tutorial lecture were carefully reviewed and selected from 95 initial submissions. The papers are devoted to both foundational and practical issues in programming languages and systems and feature current research in the following areas: semantics, logics, foundational theory, design of languages and foundational calculi, type systems, compilers, interpreters, abstract machines, program derivation, analysis, transformation, software security, safety, verification, concurrency, constraints, domain-specific languages, as well as tools for programming, verification, and implementation.

This proceedings volume of the 17th European Symposium on Programming examines fundamental issues in the specification, analysis and implementation of programming languages and systems, including static analysis, security, concurrency and program verification.