This book constitutes the refereed proceedings of the 6th International Symposium on Practical Aspects of Declarative Languages, PADL 2004, held in Dallas, Texas, USA in June 2004. The 15 revised full papers presented together with 2 invited papers were carefully reviewed and selected for presentation. All current aspects of declarative programming are addressed.

This book, complete with online files and updates, covers a hugely important area of study in computing. It constitutes the refereed proceedings of the 10th International Symposium on Practical Aspects of Declarative Languages, PADL 2008, held in San Francisco, CA, USA, in January 2008. The 20 revised full papers along with the abstract of 1 invited talk were carefully reviewed and selected from 44 submissions. The papers address all current aspects of declarative programming.

Declarative languages build on sound theoretical bases to provide attractive frameworks for application development. These languages have been succe- fully applied to a wide variety of real-world situations including database m- agement, active networks, software engineering, and decision-support systems. New developments in theory and implementation expose fresh opportunities. At the same time, the application of declarative languages to novel problems raises numerous interesting research issues. These well-known questions include scalability, language extensions for application deployment, and programming environments. Thus, applications drive the progress in the theory and imp- mentation of declarative systems, and in turn bene?t from this progress. The International Symposium on Practical Applications of Declarative L- guages (PADL) provides a forum for researchers, practitioners, and implementors of declarative languages to exchange ideas on current and novel application - eas and on the requirements for e?ective use of declarative systems. The fourth PADL symposium was held in Portland, Oregon, on January 19 and 20, 2002.

This book constitutes the refereed proceedings of the 24th International Conference on Practical Aspects of Declarative Languages, PADL 2022, held in Philadelphia, PA, USA, during January 17-18, 2022. The 9 full papers and 4 short papers included in this book were carefully reviewed and selected from 22 submissions. They were organized in topical sections as follows: answer set programming; functional programming; languages, methods and tools; and declarative solutions.

This book constitutes the refereed proceedings of the 16th International Symposium on Practical Aspects of Declarative Languages, PADL 2014, held in SanDiego, CA, USA, in January 2014, co-located with POPL 2014, the 41st Symposium on Principles of Programming Languages. The 15 revised papers presented were carefully reviewed and selected from 27 submissions. They cover a wide range of topics related to logic and functional programing, including language support for parallelism and GPUs, constructs and techniques for modularity and extensibility, and applications of declarative programming to document processing and DNA simulation.

This book constitutes the proceedings of the 20th International Symposium on Practical Aspects of Declarative Languages, PADL 2018, held in Los Angeles, CA, USA, in January 2018 and collocated with the 45th ACM SIGPLAN Symposium on Principles of Programming Languages.The 13 regular papers presented in this volume together with the abstracts of 2 invited talks were carefully reviewed and selected from 23 submissions. They deal with functional programming; constraint programming and business rules; prolog and optimization; and answer set programming.

This book constitutes the refereed proceedings of the 5th International Symposium on Practical Aspects of Declarative Languages, PADL 2003, held in New Orleans, LA, USA, in January 2003. The 23 revised full papers presented together with 3 invited contributions were carefully reviewed and selected from 57 submissions. All current aspects of declarative programming are addressed.