ghc-9.2.0.20210331: The GHC API
Safe HaskellSafe-Inferred
LanguageHaskell2010

GHC.Tc.TyCl.Class

Description

Typechecking class declarations

Synopsis

Documentation

tcATDefault :: SrcSpan -> TCvSubst -> NameSet -> ClassATItem -> TcM [FamInst] Source #

Construct default instances for any associated types that aren't given a user definition Returns [] or singleton