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Subtyping

In programming language theory, subtyping (also called subtype polymorphism or inclusion polymorphism) is a form of type polymorphism. A subtype is a datatype that is related to another datatype (the supertype) by some notion of substitutability, meaning that program elements (typically subroutines or functions), written to operate on elements of the…

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Overview

Origins

Examples

Subsumption

Subtyping schemes

Record types

Function types

Relationship with inheritance

Coercions

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Subtyping

Nodes77
Edges76
Triples41
Avg. degree1.97
Density0.025974
Components1

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Subtyping

Top relations

related to Origins · 12
Subtyping → Barbara Liskov, Because, Function, In, Jeannette Wing, John, Liskov, Luca Cardelli, Reynolds, See, Simula, The
related to Java · 8
Subtyping → ArrayList, In Java, PayloadList, SoArrayList, String, The, Using, When
related to Coercions · 6
Subtyping → Coercion, For, In, S1, T2, The
related to Subtyping schemes · 5
Subtyping → Implementations, Sound, The, This, Type
related to Width and depth subtyping · 4
Subtyping → Recall, Since, These, Types
related to Relationship with inheritance · 3
Subtyping → In, They, TS
see also · 2
Subtyping → Class-based, Covariance
is a · 1
Subtyping → relation between types

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Important terminology

type subtype types programming languages function also may supertype object-oriented inheritance defined values used relation subtypes one language records polymorphism

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Subtypingis arelation between types0.90text
Subtypingrelated to CoercionsIn0.60section
Subtypingrelated to CoercionsFor0.60section
Subtypingrelated to CoercionsThe0.60section
Subtypingrelated to CoercionsCoercion0.60section
Subtypingrelated to CoercionsT20.60section
Subtypingrelated to CoercionsS10.60section
Subtypingrelated to JavaIn Java0.60section
Subtypingrelated to JavaUsing0.60section
Subtypingrelated to JavaArrayList0.60section
Subtypingrelated to JavaSoArrayList0.60section
Subtypingrelated to JavaString0.60section

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