Fix task implementation, rename thread to threadStart

src/main/scala/lecture1/02-scalaThreadWrapper.scala

@@ -19,7 +19,7 @@ class ThreadReturning[A](toRun: => A) extends Thread:
     join()
     result
 
-def thread[A](toRun: => A): ThreadReturning[A] =
+def threadStart[A](toRun: => A): ThreadReturning[A] =
   val t = ThreadReturning(toRun)
   t.start()
   t
@@ -37,5 +37,5 @@ def countLots: Long =
 
 // Run from the SBT shell with `runMain lecture1.scalaThreadWrapper`.
 @main def scalaThreadWrapper: Unit =
-  val (x, y) = (thread(countLots), thread(countLots))
+  val (x, y) = (threadStart(countLots), threadStart(countLots))
   println((x.joinMe, y.joinMe))

src/main/scala/lecture1/04-task.scala

@@ -7,5 +7,7 @@ package lecture1
 trait Task[A]:
   def join: A
 
-def task[A](toRun: => A): Task[A] = new Task[A]:
-  override def join: A = thread(toRun).joinMe
+def task[A](toRun: => A): Task[A] =
+  val t = threadStart(toRun)
+  new Task[A]:
+    override def join: A = t.joinMe

src/main/scala/lecture6/04-OnePlaceBufferDemo.scala

 package lecture6
 
 import scala.concurrent.ExecutionContext
-import lecture1.thread
+import lecture1.threadStart
 
 class OnePlaceBuffer[Elem]:
   var elem: Elem = _
@@ -23,7 +23,7 @@ class OnePlaceBuffer[Elem]:
 
 @main def OnePlaceBufferDemo =
   val buffer = OnePlaceBuffer[Int]()
-  val getThreads = for i <- 0 until 10 yield thread { buffer.get() }
-  val putThreads = for i <- 0 until 10 yield thread { buffer.put(i) }
+  val getThreads = for i <- 0 until 10 yield threadStart { buffer.get() }
+  val putThreads = for i <- 0 until 10 yield threadStart { buffer.put(i) }
   putThreads.foreach(_.join())
   getThreads.foreach(_.join())