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package scala.collection.immutable
import org.openjdk.jmh.annotations._
import org.openjdk.jmh.infra._
import org.openjdk.jmh.runner.IterationType
import benchmark._
import java.util.concurrent.TimeUnit
@BenchmarkMode(Array(Mode.AverageTime))
@Fork(2)
@Threads(1)
@Warmup(iterations = 10)
@Measurement(iterations = 10)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Benchmark)
class VectorMapBenchmark {
@Param(Array("10", "100", "1000"))
var size: Int = _
var values: Vector[Any] = _
@Setup(Level.Trial) def initKeys(): Unit = {
values = (0 to size).map(i => (i % 4) match {
case 0 => i.toString
case 1 => i.toChar
case 2 => i.toDouble
case 3 => i.toInt
}).toVector
}
@Benchmark def groupBy = values.groupBy(_.getClass)
}
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