```val maybeClient = Either monad lt DataBaseFailure gt bind kotlinlang #arrow

```val maybeClient = Either.monad<DataBaseFailu...

noncom

11/21/2017, 1:42 PM

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val maybeClient = Either.monad<DataBaseFailure>().binding {
                        val ip = Option.fromNullable(System.getenv("MONGODB_IP")).toEither { DataBaseFailure(report) }.bind()
                        val cl = Option.fromNullable(MongoClient(ip, 27017)).toEither { DataBaseFailure(report) }.bind()
                        yields(cl)
                    }.ev()

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