IOEither<L, R>.fromNullable constructor

IOEither<L, R>.fromNullable(
  1. R? r,
  2. L onNull()
)

If r is null, then return the result of onNull in Left. Otherwise return Right(r).

Implementation

factory IOEither.fromNullable(R? r, L Function() onNull) =>
    Either.fromNullable(r, onNull).toIOEither();