1 Apr 1998 01:33
Pict 4.1 release
We are pleased to announce a new public release of Pict, a concurrent programming language based on the pi-calculus. Version 4.1 is a bug-fix and portability release. There are no user-visible changes, but several installation problems have been dealt with. --- Pict is a language in the ML tradition, formed by adding a layer of convenient syntactic sugar and a static type system to a tiny core. The current release includes a Pict-to-C compiler, reference manual, language tutorial, numerous libraries, and example programs. The core language - an asynchronous variant of Milner, Parrow, and Walker's pi-calculus - has been used as a theoretical foundation for a broad class of concurrent computations. The goal in Pict is to identify high-level idioms that arise naturally when these primitives are used to build working programs - idioms such as basic data structures, protocols for returning results, higher-order programming, selective communication, and concurrent objects. The type system integrates a number of features found in recent work on theoretical foundations for typed object-oriented languages: higher-order polymorphism, simple recursive types, subtyping, and a powerful partial type inference algorithm. Highlights of the last major release (4.0) were... * a complete formal definition * a separate compilation facility * an expanded set of standard libraries(Continue reading)
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