Jasper. At the moment you have to go to different sites to connect to social networks.
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.
A VPL allows programming with visual expressions, spatial arrangements of text and graphic symbols, used either as elements of syntax or secondary notation. For example, many VPLs (known as dataflow or diagrammatic programming) are based on the idea of "boxes and arrows", where boxes or other screen objects are treated as entities, connected by arrows, lines or arcs which represent relations. Definition VPLs may be further classified, according to the type and extent of visual expression used, into icon-based languages, form-based languages, and diagram languages. Visual programming environments provide graphical or iconic elements which can be manipulated by users in an interactive way according to some specific spatial grammar for program construction. Visual languages Alice (software) Alice is a freeware object-based programming educational programming language with an integrated development environment (IDE).
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: 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++. In controlled studies at Ithaca College and Saint Joseph's University looking at students with no prior programming experience taking their first computer science course, the average grade rose from C to B, and retention rose from 47% to 88%. Learning to Program with Alice, Wanda P.
Mercury (programming language) The official implementation, the Melbourne Mercury Compiler, is available for most Unix platforms, including Mac OS X, as well as for Microsoft Windows.
Mercury is based on the logic programming language Prolog. It has the same syntax, and the same basic concepts such as the SLD resolution algorithm. It can ostensibly be viewed as a pure subset of Prolog with strong types and modes. As such, it is often compared to its predecessor, both in terms of features, and run-time efficiency. The language is designed with software engineering principles in mind. 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. Its authors claim that Mercury is the fastest logic language in the world, by a wide margin. Notable programs written in Mercury include the Mercury compiler itself and the Prince XML formatter.
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 External links Prolog. Prolog is a general purpose logic programming language associated with artificial intelligence and computational linguistics. 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. 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. Syntax and semantics Data types Prolog's single data type is the term. An atom is a general-purpose name with no inherent meaning. Special cases of compound terms: A List is an ordered collection of terms. Rules and facts Prolog programs describe relations, defined by means of clauses. Clauses with empty bodies are called facts. Which is equivalent to the rule: ? ? ? ?