haskpy.types.either

Values with two possibilities

Either(match)
Left(x)
Right(x)
either(f, g, e)	(a -> c) -> (b -> c) -> Either a b -> c
is_left(m)
is_right(m)
from_left(x, e)
from_right(x, e)
left(p)	(a -> b) -> s -> t, or more generally, PrismP a b s t
right(p)	(a -> b) -> s -> t, or more generally, PrismP a b s t