Modulebase-4.20.2.0Haskell2010

GHC.Records

This module defines the HasField class used by the OverloadedRecordFields extension. See the <https://gitlab.haskell.org/ghc/ghc/wikis/records/overloaded-record-fields wiki page> for more details.

1 class

Packagebase-4.20.2.0
Exports1
LanguageHaskell2010
LicenceBSD-3-Clause
SourceRecords.hs

classclass HasField (x :: k) r a | x r -> a where

Constraint representing the fact that the field x belongs to the record type r and has field type a. This will be solved automatically, but manual instances may be provided as well.

Methods

getField :: r -> a
Selector function to extract the field from the record.