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  2. Guarded Command Language - Wikipedia

    en.wikipedia.org/wiki/Guarded_Command_Language

    The Guarded Command Language (GCL) is a programming language defined by Edsger Dijkstra for predicate transformer semantics in EWD472. [1] It combines programming concepts in a compact way. It makes it easier to develop a program and its proof hand-in-hand, with the proof ideas leading the way; moreover, parts of a program can actually be ...

  3. Guard (computer science) - Wikipedia

    en.wikipedia.org/wiki/Guard_(computer_science)

    Guards are the fundamental concept in Guarded Command Language, a language in formal methods. Guards can be used to augment pattern matching with the possibility to skip a pattern even if the structure matches. Boolean expressions in conditional statements usually also fit this definition of a guard although they are called conditions.

  4. Predicate transformer semantics - Wikipedia

    en.wikipedia.org/wiki/Predicate_transformer...

    Predicate transformer semantics were introduced by Edsger Dijkstra in his seminal paper "Guarded commands, nondeterminacy and formal derivation of programs".They define the semantics of an imperative programming paradigm by assigning to each statement in this language a corresponding predicate transformer: a total function between two predicates on the state space of the statement.

  5. List of model checking tools - Wikipedia

    en.wikipedia.org/wiki/List_of_model_checking_tools

    Murφ: Guarded commands and an asynchronous, interleaving model of concurrency, with all synchronization and communication done through global variables. PEPA: Performance Evaluation Process Algebra; it is a stochastic process algebra designed for modelling computer and communication systems. Plain MC: simple text-file formats used in MRMC and ...

  6. Conditional (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Conditional_(computer...

    The Guarded Command Language (GCL) of Edsger Dijkstra supports conditional execution as a list of commands consisting of a Boolean-valued guard (corresponding to a condition) and its corresponding statement. In GCL, exactly one of the statements whose guards is true is evaluated, but which one is arbitrary.

  7. Guarded commands - Wikipedia

    en.wikipedia.org/?title=Guarded_commands&redirect=no

    This page was last edited on 11 June 2017, at 09:18 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

  8. 10 of the most heavily guarded places on Earth - AOL

    www.aol.com/lifestyle/2016-09-06-10-of-the-most...

    These are the most heavily guarded places on Earth, and they are not selling admission. ... Cheyenne Mountain was the home base of North American Aerospace Defense Command during the Cold War ...

  9. Quantum programming - Wikipedia

    en.wikipedia.org/wiki/Quantum_programming

    Quantum Guarded Command Language (qGCL) was defined by P. Zuliani in his PhD thesis. It is based on Guarded Command Language created by Edsger Dijkstra. It can be described as a language of quantum programs specification.