First account of the subject by two of its leading exponents. Essentially self-contained.

This book constitutes the thoroughly refereed post-proceedings of the 13th International Workshop on the Implementation of Functional Languages, IFL 2001, held in Stockholm, Sweden in September 2001. The eleven revised full papers presented have gone through a thorough round of post-workshop reviewing and were selected from 28 workshop papers. Among the topics covered are relevant aspects of implementing and using functional languages, such as type systems, compilation, program optimization, theorem proving, program correctness, program analysis, parallel compilers, subtyping, and generic programming.

This book constitutes the thoroughly refereed post-workshop proceedings of the 11th International Workshop on the Implementation of Functional Languages, IFL'99, held in Lochem, The Netherlands, in September 1999. The 11 revised full papers presented were carefully selected during two rounds of reviewing. The papers are organized in sections on applications, compilation techniques, language concepts, and parallelism.

The International Workshops on the Implementation of Functional Languages (IFL)havebeenrunningfor14yearsnow.Theaimoftheseworkshopsistobring together researchers actively engaged in the implementation and application of functional programming languages to discuss new results and new directions of research. A non-exhaustive list of topics includes: language concepts, type che- ing, compilation techniques, (abstract) interpretation, automatic program g- eration, (abstract) machine architectures, array processing, concurrent/parallel programming and program execution, heap management, runtime pro?ling and performance measurements, debugging and tracing, veri?cation of functional programs, tools and programming techniques. The 14th edition, IFL 2002, was held in Madrid, Spain in September 2002. It attracted47researchersfromthefunctionalprogrammingcommunity,belonging to10di?erentcountries.Duringthethreedaysoftheworkshop,34contributions were presented, covering most of the topics mentioned above. The workshop was sponsored by several Spanish public institutions: the M- istry of Science and Technology, Universidad Complutense de Madrid, and the Tourism O?ce, Town Hall and Province Council of Segovia, a small Roman and medieval city near Madrid. We thank our sponsors for their generous contri- tions. This volume follows the lead of the last six IFL workshops in publishing a high-quality subset of the contributions presented at the workshop in Springer’s Lecture Notes in Computer Science series. All speakers attending the workshop were invited to submit a revised version for publication. A total of 25 papers were submitted. Each one was reviewed by four PC members and thoroughly discussed by the PC. The results of this process are the 15 papers included in this volume.

The 16th International Workshop on Implementation and Application of Fu- tional Languages (IFL 2004) was held in Lub ̈ eck, Germany, September 8–10, 2004. It was jointly organized by the Institute of Computer Science and Applied Mathematics of the University of Kiel and the Institute of Software Technology and Programming Languages of the University of Lub ̈ eck. IFL 2004 was the sixteenth event in the annual series of IFL workshops. The aim of the workshop series is to bring together researchers actively engaged in the implementation and application of functional and function-based progr- ming languages. It provides an open forum for researchers who wish to present and discuss new ideas and concepts, work in progress, preliminary results, etc., related primarily, but not exclusively, to the implementation and application of functional languages. Topics of interest cover a wide range from theoretical - pects over language design and implementation towards applications and tool support. Previous IFL workshops were held in the United Kingdom (Southampton, Norwich, London, St Andrews, and Edinburgh), in the Netherlands (Nijmegen and Lochem), in Germany (Aachen and Bonn), in Sweden (B? astad and Sto- holm), and in Spain (Madrid). In 2005, the 17th International Workshop on - plementation and Application of Functional Languages will be held in Dublin, Ireland.

This book contains the selected peer-reviewed and revised papers from the 24th International Symposium on Implementation and Application of Functional Languages, IFL 2012, held in Oxford, UK, in August/September 2012. The 14 papers included in this volume were carefully reviewed and selected from 28 revised submissions received from originally 37 presentations at the conference. The papers relate to the implementation and application of functional languages and function-based programming.