This volume contains the revised lecture notes corresponding to the lectures given at the 6th International School on Advanced Functional Programming, AFP 2008, held in Heijen, a little village in the woodlands near the city of Nijmegen, The Netherlands, May 19-24, 2008. AFP 2008 was co-located with TFP 2008, the 9th Symposium on Trends in Functional Programming see P. Achten, P.Koopman, M.Marazan Trends in Functional Programming volume 9, ISBN 978-1-84150-277-9, Intellect]. The school attracted 62 participants from 19 countries, a record, including the lecturers and organizers. This event...

This Festschrift has been published in honor of Rinus Plasmeijer, to celebrate the combined occasion of his 61st birthday and the 25th Symposium on Implementation and Application of Functional Languages, IFL 2013, held in Nijmegen, The Netherlands, in August 2013. Rinus Plasmeijer was the main designer of the lazy functional programming language "Clean" and has always been the leader of the associated research team. He has played a decisive role in making the Radboud University of Nijmegen an important center of research in functional programming by organizing and hosting the first few IFL...