public static typeTo BiMap <typeFrom, typeTo, left, right, leftˈ, rightˈ>(this typeFrom From, SSumProj <typeFrom, left, right> Alg, Func <left, leftˈ> Left, Func <right, rightˈ> Right, SSumInj <typeTo, leftˈ, rightˈ> CoAlg) => Alg.Project(From, x => CoAlg.InjectLeft(Left(x)), x => CoAlg.InjectRight(Right(x)));
public static type InjectRight <type, left, right>(this SSumInj <type, left, right> CoAlg, right Right) => CoAlg.Inject(Right, Either <Func <right, left> > .Right <Func <right, right> >(x => x));
public static typeTo H**o <typeFrom, typeTo, left, right>(this typeFrom From, SSumProj <typeFrom, left, right> Alg, SSumInj <typeTo, left, right> CoAlg) => Alg.Project(From, CoAlg.InjectLeft, CoAlg.InjectRight);
public static type InjectLeft <type, left, right>(this SSumInj <type, left, right> CoAlg, left Left) => CoAlg.Inject(Left, Either <Func <left, right> > .Left <Func <left, left> >(x => x));