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Abstract type

In programming languages, an abstract type (also known as existential types) is a type in a nominative type system that cannot be instantiated directly; by contrast, a concrete type can be instantiated directly. Instantiation of an abstract type can occur only indirectly, via a concrete subtype.

Overview, Creation & Usage

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Overview

Creation

Usage

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Map overview Semantic statistics

Abstract type

Nodes37
Edges36
Triples25
Avg. degree1.95
Density0.054054
Components1

How this topic connects Entity context

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Abstract type

Top relations

related to Creation · 10
Abstract type → Abstract, By, Does, However, In, Java, NSObject, Objective-C, SEL, Smalltalk
related to External links · 7
Abstract type → Abstract, Benjamin Pierce, MIT Press, Programming Languages, Rosetta Code, Skeletal Interfaces Explained, Types
related to Usage · 4
Abstract type → Abstract, Many, OOP, Some

Important terminology Word statistics

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Important terminology

abstract types class type concrete programming languages methods may also used classes method implementation known java include instantiated subtype properties

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Smalltalkinstance ofa child type that does not implement all abstract methods from its parent becomes abstract itself.In many dynamically typed languages0.80text
any class that sends a particular method to thisinstance ofa child type that does not implement all abstract methods from its parent becomes abstract itself.In many dynamically typed languages0.80text
but does not implement that methodinstance ofa child type that does not implement all abstract methods from its parent becomes abstract itself.In many dynamically typed languages0.80text
can be considered abstractinstance ofa child type that does not implement all abstract methods from its parent becomes abstract itself.In many dynamically typed languages0.80text
Abstract typerelated to CreationAbstract0.60section
Abstract typerelated to CreationBy0.60section
Abstract typerelated to CreationJava0.60section
Abstract typerelated to CreationIn0.60section
Abstract typerelated to CreationSmalltalk0.60section
Abstract typerelated to CreationHowever0.60section
Abstract typerelated to CreationObjective-C0.60section
Abstract typerelated to CreationDoes0.60section

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