# ¤ stripLeft, stripRight, et al

## Types

stripLeft :: Either `a` `b` -> Maybe `a`
stripRight :: Either `a` `b` -> Maybe `b`
stripEither :: Either `a` `a` -> `a`
filterLeft :: [Either `a` `b`] -> [`a`]
filterRight :: [Either `a` `b`] -> [`b`]
isLeft :: Either `a` `b` -> Bool
isRight :: Either `a` `b` -> Bool
either :: ??
mapEither :: (`a` -> `b`) -> (`c` -> `d`) -> Either `a` `c` -> Either `b` `d`
swapEither :: Either `a` `b` -> Either `b` `a`
splitEitherList :: [Either `a` `b`] -> ([`a`], [`b`])
outl :: ??
outr :: ??

**type** Either = ??

**type** Maybe = ??

## Description

These are various common utility functions for the Either type.

## See Also

Either.