In October 1958, John McCarthy published one in a series of reports about his then ongoing effort for designing a new programming language that would be especially suited for achieving artificial intelligence. That report was the first one to use the name LISP for this new programming language. 50 years later, Lisp is still in use. During the past five decades, it has been changed and turned, which led to dialects differing in many respects from the original design, but the central corner stones remained the same, making it one of the oldest programming language still in use today, second only to Fortran.
The final design for the first incarnation of Lisp was published in an issue of the Communications of the ACM in 1960. That version of Lisp pioneered numerous languages features that are nowadays taken for granted. To name but a few: Lisp introduced a conditional expression, which was taken over in other languages as the ubiquitous if statement; it introduced recursion and first-class functions, the essential ingredients of functional and many other programming languages; it introduced reference semantics for variables, without which object-oriented programming would not exist; it introduced symbolic expressions, a generic and uniform representation for data (later reinvented as XML) and programs, the latter enabling program transformations from within an application; it introduced garbage collection for the very first time in programming languages; and it even already had a combination of metadata and dynamic dispatch in the form of symbols and property lists.
Lisp is clearly one of the most influential programming languages in the history of computer science: Timothy Hart added macros to Lisp in the 1960's; Warren Teitelman invented an advice facility for Lisp in the 1960's as the very first precursor to aspect-oriented programming; Carl Hewitt used Lisp as a platform to develop backtracking (essential for logic programming) and the actor model; Alan Kay acknowledges the heavy influence of Lisp on Smalltalk, the first explicit object-oriented programming language; Brian Smith developed the concept of computational reflection using Lisp as a starting point; Paul Graham used Lisp to develop the first continuation-based web application; and even today Lisp is on the forefront for the upcoming Web 3.0.
We would like to celebrate Lisp's 50th birthday. OOPSLA 2008 is an excellent venue for such a celebration, because object-oriented programming benefitted heavily from Lisp ideas and because OOPSLA 2008 takes place in October, exactly 50 years after the name Lisp has been used publicly for the first time.
John McCarthy has already agreed to give a talk about the early history of Lisp, returning to OOPSLA after his keynote talk at OOPSLA 2007. Guy Steele and Richard Gabriel will repeat their HOPL-II talk about the Evolution of Lisp from 1992, using a particularly unusual set of slides. Pascal Costanza will talk about the recent developments in the Lisp community, which has seen a surprising resurrection after its wake from the AI Winter. We will invite other influential Lispers, covering important aspects in the development of Lisp during the past five decades. Finally, we will have an open panel discussion about the next 50 years of Lisp.
OOPSLA 2008 will take place in Nashville, Tennessee, USA from October 19 to October 23. OOPSLA is the major annual conference on object-oriented programming worldwide and continues to attract several hundreds of the brightest minds in this field both from industry and academia since over 20 years. Find more information about OOPSLA 2008 at http://oopsla.org
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