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Programming Languages (High Level)

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We think that things could be better and that they should come to you. Post to more than one network at the same time. Merge updates from many networks into one feed. Synchronise friends and contacts across multiple networks. Move images, music and more from one network to another. All from your own private, personalised site with no adverts and zero interference. Visual programming language. In computing, a visual programming language (VPL) is any programming language that lets users create programs by manipulating program elements graphically rather than by specifying them textually.

Visual programming language


Alice (software)

Alice uses a drag and drop environment to create computer animations using 3D models. The software was developed first at University of Virginia, then Carnegie Mellon (from 1997), by a research group led by the late Randy Pausch. Alice was developed to address three core problems in educational programming:[3] Most programming languages are designed to be usable for "production code" and thus introduce additional complexity. Alice is designed solely to teach programming theory without the complex semantics of production languages such as C++.


Mercury (programming language)


Due to the use of information obtained at compile time (such as type and mode information), programs written in Mercury typically perform significantly faster than equivalent programs written in Prolog.[2][3] Its authors claim that Mercury is the fastest logic language in the world, by a wide margin.[1] Notable programs written in Mercury include the Mercury compiler itself and the Prince XML formatter. Production level: Beta quality: Cappuccino Web Framework - Build Desktop Class Applications in Objective-J and JavaScript.



Allen Newell's research group in artificial intelligence had been working on production systems for some time, but Forgy's implementation, based on his Rete algorithm, was especially efficient, sufficiently so that it was possible to scale up to larger problems involving hundreds or thousands of rules. OPS5 uses a forward chaining inference engine; programs execute by scanning "working memory elements" (which are vaguely object-like, with classes and attributes) looking for matches with the rules in "production memory". Rules have actions that may modify or remove the matched element, create new ones, perform side effects such as output, and so forth.

Execution continues until no more matches can be found. In this sense, OPS5 is an execution engine for a Petri net extended with inhibitor arcs. References[edit] External links[edit] Prolog. Prolog is a general purpose logic programming language associated with artificial intelligence and computational linguistics.[1][2][3] Prolog has its roots in first-order logic, a formal logic, and unlike many other programming languages, Prolog is declarative: the program logic is expressed in terms of relations, represented as facts and rules.


A computation is initiated by running a query over these relations.[4] The language was first conceived by a group around Alain Colmerauer in Marseille, France, in the early 1970s and the first Prolog system was developed in 1972 by Colmerauer with Philippe Roussel.[5][6] Prolog was one of the first logic programming languages,[7] and remains the most popular among such languages today, with many free and commercial implementations available. Prolog is well-suited for specific tasks that benefit from rule-based logical queries such as databases searching, voice control systems, and template filling. §Syntax and semantics[edit] §Data types[edit] ? ? ? ?