doobie-predef.sc

val doobieVersion = "0.6.0"
import $ivy.`org.tpolecat:doobie-core_2.12:0.6.0`
import $ivy.`org.tpolecat:doobie-postgres_2.12:0.6.0`
import $ivy.`org.tpolecat:doobie-specs2_2.12:0.6.0`
import doobie._
import doobie.implicits._
import cats._
import cats.data._
import cats.effect.IO
import cats.implicits._
import scala.concurrent.ExecutionContext

// We need a ContextShift[IO] before we can construct a Transactor[IO]. The passed ExecutionContext
// is where nonblocking operations will be executed.
implicit val cs = IO.contextShift(ExecutionContext.global)

// A transactor that gets connections from java.sql.DriverManager and excutes blocking operations
// on an unbounded pool of daemon threads. See the chapter on connection handling for more info.
val xa = Transactor.fromDriverManager[IO](
  "org.postgresql.Driver", // driver classname
  "jdbc:postgresql:world", // connect URL (driver-specific)
  "postgres",              // user
  ""                       // password
)

val y = xa.yolo
import y._