gistfile1.scala

//One of these will make for a very bad day... Can you tell which one? 

import scala.slick.session.Database

val db:Database = _ //connection pool (e.g., c3p0)

//Option A 
def fetchResultsA = future { 
  db.withSession { implicit session =>
    val query = for (c <- coffees) yield c.name
    query.list()
  }
}

//Option B 
def fetchResultsB = db.withSession { implicit session =>
  future { 
    val query = for (c <- coffees) yield c.name
    query.list()
  }
}