Functional programming: Past,present,and future. contributions dedicated to D. A. Turner on his 70th birthday

David turner´s contributions to functional programming language design and implementation were seminal. he is perhaps best known for his pioneering work in combinator graph reduction and for the design and implementation of an influential series of pure,non-strict,functional programming languages: sasl,krc and miranda. david invented or co-invented many of the basic techniques of lazy functional programming and his ideas and notations have passed into later languages such as haskell. the papers in this special issue are all dedicated d.a.turner on his 70th birthday and relate to his many contributions to the field. all the papers have been refereed to j.ucs standard. a short scientific biography of david precedes the papers. © j.ucs.