WIP add benchmarks

benchmarks/src/main/scala/com.daodecode.scalax.benchmarks/IterableLikeExtensionsBenchmark.scala

@@ -0,0 +1,58 @@
+package com.daodecode.scalax.benchmarks
+
+import org.openjdk.jmh.annotations._
+import com.daodecode.scalax.collection.extensions._
+
+import scala.collection.immutable
+
+@State(Scope.Benchmark)
+@BenchmarkMode(Array(Mode.Throughput))
+class IterableLikeExtensionsBenchmark {
+
+  @Param(Array("10", "100", "1000", "10000", "100000", "1000000"))
+  var size: Int = _
+
+  var iterable: Iterable[(Int, String)] = _
+
+  @Setup
+  def prepare: Unit = {
+    iterable = Iterable((0 to size).map(i => i -> i.toString): _*)
+  }
+
+//  @Benchmark
+//  def identityMap: Unit = {
+//    iterable.map(identity)
+//  }
+
+  @Benchmark
+  def mapAndToMapBenchmark: Unit = {
+    iterable.map(identity).toMap
+  }
+
+  @Benchmark
+  def mapAndToMapBenchmark2: Unit = {
+    iterable.map(identity).toMap
+  }
+
+  @Benchmark
+  def mapToMapBenchmark: Unit = {
+    iterable.mapToMap(identity)
+  }
+
+  @Benchmark
+  def mapToMapInlinedBenchmark: Unit = {
+    val b = immutable.Map.newBuilder[Int, String]
+    for (a <- iterable)
+      b += identity(a)
+    b.result()
+  }
+
+  @Benchmark
+  def mapToMapInlinedBenchmark2: Unit = {
+    val b = immutable.Map.newBuilder[Int, String]
+    for (a <- iterable)
+      b += identity(a)
+    b.result()
+  }
+
+}

benchmarks/src/main/scala/com.daodecode.scalax.benchmarks/SeqExtensionsBenchmark.scala

@@ -0,0 +1,25 @@
+package com.daodecode.scalax.benchmarks
+
+import org.openjdk.jmh.annotations.{Benchmark, Scope, State}
+import com.daodecode.scalax.collection.extensions._
+
+case class Person(fName: String, lName: String, age: Int)
+
+
+@State(Scope.Benchmark)
+class SeqExtensionsBenchmark {
+
+
+  val eugeneP = Person("Eugene", "Platonov", 27)
+  val xeniya = Person("Xeniya", "Skrypnyk", 27)
+  val eugeneM = Person("Eugene", "Medvediev", 31)
+  val vasiliy = Person("Vasiliy", "Platonov", 2)
+
+  val people = Seq(eugeneP, xeniya, eugeneM, vasiliy)
+
+  @Benchmark
+  def testDistinctBySimple: Unit = {
+    people.distinctBy(_.fName)
+  }
+
+}

build.sbt

@@ -41,3 +41,12 @@ initialCommands in console :=
     |import com.daodecode.scalax._
     |""".stripMargin
 
+
+//benchmarks
+
+lazy val `scalax-collection` = project.in(file("."))
+
+lazy val benchmarks =
+  project
+    .dependsOn(`scalax-collection`)
+    .enablePlugins(JmhPlugin)

project/plugins.sbt

@@ -11,3 +11,5 @@ addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.1.0")
 addSbtPlugin("org.tpolecat" % "tut-plugin" % "0.6.2")
 
 addSbtPlugin("com.github.tkawachi" % "sbt-doctest" % "0.7.0")
+
+addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.3.2")