cr0t · August 31, 2011 15:02 · Mar 8, 2011
diff --git a/App.scala b/App.scala
@@ -0,0 +1,11 @@
+import Benchmark._
+
+object App {
+    def main(args: Array[String]): Unit = {
+        benchmark(100000){
+            report("foo"){ foo() } ::
+            report("bar"){ bar() } ::
+            Nil
+        }
+    }
+}
diff --git a/Benchmark.scala b/Benchmark.scala
@@ -0,0 +1,22 @@
+object Benchmark {
+    case class BenchmarkReport(name: String, f: () => Unit){
+        def run(n: Int) = {
+            val start = System.currentTimeMillis
+            (1 to n) foreach { i => f() }
+            val time = System.currentTimeMillis - start
+            (name, time)
+        }
+    }
+
+    def benchmark(n: Int)(reports: List[BenchmarkReport]) = {
+        val results = reports.map(_.run(n))
+        println("Name                    Time(s)")
+        println("===============================")
+        results.foreach { case (name, time) =>
+            printf("%-20s %10f\n", name, time / 1000.0)
+        }
+        results
+    }
+
+    def report(name: String)(f: => Unit) = BenchmarkReport(name, f _)
+}
diff --git a/result.txt b/result.txt
@@ -0,0 +1,4 @@
+Name                    Time(s)
+===============================
+foo                    0.084000
+bar                    0.082000