Keep only values which satisfy a predicate
Keep only values which satisfy a predicate, with a default value
Keep only values which satisfy a predicate, with a default value
a new EitherT
Returns the result of applying f to this EitherT if this EitherT is not empty
Returns the result of applying f to this EitherT if this EitherT is not empty
a new EitherT
Returns the result of applying f to this EitherT if this EitherT is not empty
Returns the result of applying f to this EitherT if this EitherT is not empty
a EitherT
Keep only values which satisfy a predicate