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Nominal type system information


In computer science, a type system is nominal (also called nominative or name-based) if compatibility and equivalence of data types is determined by explicit declarations and/or the name of the types. Nominal systems are used to determine if types are equivalent, as well as if a type is a subtype of another. Nominal type systems contrast with structural systems, where comparisons are based on the structure of the types in question and do not require explicit declarations.

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Nominal type system

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computer science, a type system is nominal (also called nominative or name-based) if compatibility and equivalence of data types is determined by explicit...

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Comparison of programming languages by type system

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of the features of the type systems and type checking of multiple programming languages. Brief definitions A nominal type system means that the language...

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Nominal

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interest Nominal type system, a type system where properties of a data type are determined by explicit declaration and/or the name of a type Nominal group...

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Type system

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In computer programming, a type system is a logical system comprising a set of rules that assigns a property called a type (for example, integer, floating...

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Substructural type system

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Substructural type systems are a family of type systems analogous to substructural logics where one or more of the structural rules are absent or only...

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Structural type system

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type system (or property-based type system) is a major class of type systems in which type compatibility and equivalence are determined by the type's...

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Government

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national governments and subsidiary organizations. The main types of modern political systems recognized are democracies, totalitarian regimes, and, sitting...

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Nominalism

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In metaphysics, nominalism is the view that universals and abstract objects do not actually exist other than being merely names or labels. There are at...

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Duck typing

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structural typing. Structural typing is a static typing system that determines type compatibility and equivalence by a type's structure, whereas duck typing is...

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Type species

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the name-bearing type of the name of a genus or subgenus (a "genus-group name"). In the Glossary, type species is defined as The nominal species that is...

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Gross domestic product

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user—produced in a country in a given period (say a quarter or a year)." GDP (nominal) per capita does not reflect differences in the cost of living and the...

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ISO 5775

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crochet-type rims. Crochet-type rims are not the same as hooked-bead rims. Such tires are designated with their nominal section width and their nominal rim...

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Type safety

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under static enforcement. In the context of static (compile-time) type systems, type safety usually involves (among other things) a guarantee that the...

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Strong and weak typing

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colloquially classified is whether the language's type system makes it strongly typed or weakly typed (loosely typed). However, there is no precise technical definition...

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Stellar classification

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Morgan–Keenan (MK) system using the letters O, B, A, F, G, K, and M, a sequence from the hottest (O type) to the coolest (M type). Each letter class...

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Mains electricity by country

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2{\sqrt {2}}.} The system of plug types using a single letter (from A to N) used here is from World Plugs, which defines the plug type letters in terms...

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Session type

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expected order and of the expected type. Session type systems have been adapted for both channel and actor systems. Session types are used to ensure desirable...

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Level of measurement

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types of scales that he called "nominal", "ordinal", "interval", and "ratio", unifying both "qualitative" (which are described by his "nominal" type)...

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Nominal impedance

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Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The...

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Gradual typing

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Gradual typing is a type system in which some variables and expressions may be given types and the correctness of the typing is checked at compile time...

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Remuneration

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Remuneration is the pay or other financial compensation provided in exchange for an employee's services performed (not to be confused with giving (away)...

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Type inference

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languages and mathematical type systems, but also natural languages in some branches of computer science and linguistics. Types in a most general view can...

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Dependent type

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dependent type is a type whose definition depends on a value. It is an overlapping feature of type theory and type systems. In intuitionistic type theory...

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