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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. 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.

  4. 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.

  5. 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.

  6. 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 ...

  7. Glossary of economics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_economics

    Also called resource cost advantage. The ability of a party (whether an individual, firm, or country) to produce a greater quantity of a good, product, or service than competitors using the same amount of resources. absorption The total demand for all final marketed goods and services by all economic agents resident in an economy, regardless of the origin of the goods and services themselves ...

  8. Economy (linguistics) - Wikipedia

    en.wikipedia.org/wiki/Economy_(linguistics)

    The economy principle in linguistics, also known as linguistic economy, is a functional explanation of linguistic form. It suggests that the organization of phonology, morphology, lexicon and syntax is fundamentally based on a compromise between simplicity and clarity, two desirable but to some extent incompatible qualities.

  9. Guarded logic - Wikipedia

    en.wikipedia.org/wiki/Guarded_logic

    Guarded bisimulations are objects which when analyzing guarded logic. All relations in a slightly modified standard relational algebra with guarded bisimulation and first-order definable are known as guarded relational algebra. This is denoted using GRA. Along with first-order guarded logic objects, there are objects of second-order guarded logic.