This book constitutes the thoroughly refereed post-proceedings of the 14th International Workshop on the Implementation of Functional Languages, IFL 2002, held in Madrid, Spain in September 2002. The 15 revised full papers presented were carefully selected from 25 submissions during two rounds of reviewing and revision. Among the topics addressed are language concepts, type checking, compilation techniques, abstract interpretation, automatic program generation, machine architecture, array processing, concurrent and parallel programming and program execution, heap management, runtime profiling and performance measurement, debugging and tracing, verification of functional programs, and tools and programming techniques.

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.