type class - определение. Что такое type class
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Что (кто) такое type class - определение

A TERM IN COMPUTER SCIENCE
Type classes; Typeclass; Type Class; Typeclasses

type class         
A set of types for which certain operations or methods are defined. E.g. the class Number might have methods for addition and subtraction. Classes are a feature of {object oriented languages} and of the functional programming language Haskell. See also inheritance.
Type class         
In computer science, a type class is a type system construct that supports ad hoc polymorphism. This is achieved by adding constraints to type variables in parametrically polymorphic types.
Type A Kō-hyōteki-class submarine         
  • ARS-22}} in 1960
  • Japanese Type A Midget Submarine recovered in 1960 off Pearl Harbor, Hawaii.
  • ''Landing ship No.5'']] carried ''Type 'C' No.69''.
  • HMAS ''Kuttabul'' after sinking.
  • The two midget submarines sunk in Sydney Harbour were used to construct a composite midget submarine which toured [[Australia]] during the war.
WORLD WAR II JAPANESE SUBMARINE CLASS
Ko-hyoteki class midget submarine; Ko-hyoteki class submarine; Type A Ko-hyoteki class submarine; Ko-hyoteki-class submarine; Type A Ko-hyoteki-class submarine; Type A Kō-hyoteki-class submarine; Midget submarines attack Pearl Harbor
The class was a class of Japanese midget submarines (Kō-hyōteki) used during World War II. They had hull numbers but no names.

Википедия

Type class

In computer science, a type class is a type system construct that supports ad hoc polymorphism. 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 support the overloaded operations associated with T.

Type classes were first implemented in the Haskell programming language after first being proposed by Philip Wadler and Stephen Blott as an extension to "eqtypes" in Standard ML, and were originally conceived as a way of implementing overloaded arithmetic and equality operators in a principled fashion. In contrast with the "eqtypes" of Standard ML, overloading the equality operator through the use of type classes in Haskell does not require extensive modification of the compiler frontend or the underlying type system.

Примеры употребления для type class
1. "It shows that corporate America was fed up with a lot of the abusive–type class actions." The ground was shifting beneath Lerach.