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\haddockmoduleheading{TypeFamilies3}
\label{module:TypeFamilies3}
\haddockbeginheader
{\haddockverb\begin{verbatim}
module TypeFamilies3 (
    Foo, Bar, Baz(Baz3, Baz2, Baz1)
  ) where\end{verbatim}}
\haddockendheader

\begin{haddockdesc}
\item[\begin{tabular}{@{}l}
type family Foo a where
\end{tabular}]
{\haddockbegindoc
\haddockbeginargs
\haddockdecltt{Foo () = Int} \\
\haddockdecltt{Foo {\char '137} = ()} \\
\end{tabulary}\par
A closed type family\par}
\end{haddockdesc}
\begin{haddockdesc}
\item[\begin{tabular}{@{}l}
type family Bar a
\end{tabular}]
{\haddockbegindoc
An open family\par}
\end{haddockdesc}
\begin{haddockdesc}
\item[\begin{tabular}{@{}l}
type instance Bar () = Int\\type instance Bar Int = ()
\end{tabular}]
\end{haddockdesc}
\begin{haddockdesc}
\item[\begin{tabular}{@{}l}
data family Baz a
\end{tabular}]
{\haddockbegindoc
A data family\par}
\end{haddockdesc}
\begin{haddockdesc}
\item[\begin{tabular}{@{}l}
data instance Baz ()\\newtype instance Baz Double\\data instance Baz Int
\end{tabular}]
\end{haddockdesc}