// Bifunctor
public static IEither <L1, R1> SelectBoth <L, L1, R, R1>(
this IEither <L, R> source,
Func <L, L1> selectLeft,
Func <R, R1> selectRight)
{
return(source.Accept(
new SelectBothVisitor <L, L1, R, R1>(selectLeft, selectRight)));
}
// Monad
public static IEither <L, R> Join <L, R>(
this IEither <L, IEither <L, R> > source)
{
return(source.Accept(new JoinVisitor <L, R>()));
}
// Bifoldable - sort of... Really, the T involved should give rise to a
// monoid
public static T Bifold <T>(this IEither <T, T> source)
{
return(source.Accept(new BifoldVisitor <T>()));
}