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Type class

In computer science, a type class is a type system construct that supports ad hoc polymorphism in a programming language. This is achieved by adding constraints to type variables in parametrically polymorphic types. Such a constraint typically involves a type class T and a type variable a, and means that a can only be instantiated to a type whose members…

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Related notions

Type familyC++C++20ConceptsGo
16 related topics

Overview

Computer scienceType systemAd hoc polymorphismProgramming languageParametric polymorphism
16 related topics

Type classes and implicit parameters

SetTotal orderingScalaSyntactic sugarRocq
6 related topics

Multi-parameter type classes

Standard libraryUnboxedMultimethodsHugs
4 related topics

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Overview

Higher-kinded polymorphism

  • Monad Monad (functional programming)

Multi-parameter type classes

Functional dependencies

Type classes and implicit parameters

Other approaches to operator overloading

Related notions

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Map overview Semantic statistics

Type class

Nodes56
Edges55
Triples49
Avg. degree1.96
Density0.035714
Components1

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Type class

Top relations

related to External links · 11
Type class → Advanced Functional Programming, Advanced Type Classes, Gentle Introduction, Haskell, Implementing, June, Overloading, Type Classes, Understanding Type Classes, Utrecht University, Version
related to Functional dependencies · 8
Type class → For, Haskell, In, In Haskell, Simon Peyton Jones, State, That, This
related to Multi-parameter type classes · 7
Type class → For, GHC, In, Like, Multi-parameter, This, Type
related to Other approaches to operator overloading · 6
Type class → Haskell's, In Standard ML, OCaml, OCaml's, SML's, The
related to Higher-kinded polymorphism · 5
Type class → An, Monad, Thatmis, These, Type
related to Related notions · 5
Type class → An, As, GHC, Haskell, In
related to overview · 3
Type class → Boolean, In Haskell, Type
is a · 1
Type class → type system construct that supports ad hoc polymorphism in a programming language
related to Type classes and implicit parameters · 1
Type class → Type

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Important terminology

type classes haskell class instance types parameters example equality programming implemented language standard implicit polymorphism similar instances coherence way compiler

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Type classis atype system construct that supports ad hoc polymorphism in a programming language0.90text
implicit parametersinstance oftype classes are a programming idiom that can be implemented with existing language features0.80text
not a separate language feature per seinstance oftype classes are a programming idiom that can be implemented with existing language features0.80text
Type classrelated to External linksType Classes0.60section
Type classrelated to External linksOverloading0.60section
Type classrelated to External linksGentle Introduction0.60section
Type classrelated to External linksHaskell0.60section
Type classrelated to External linksJune0.60section
Type classrelated to External linksVersion0.60section
Type classrelated to External linksAdvanced Functional Programming0.60section
Type classrelated to External linksUtrecht University0.60section
Type classrelated to External linksAdvanced Type Classes0.60section

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