Benchmarks: write in Scala or JS, run in your browser.
See an online demo here: https://japgolly.github.io/scalajs-benchmark/.
The tiny source code is here: gh-pages/demo.
- Include
scalajs-benchmarkas a dependency in your Scala.JS project.
libraryDependencies += "com.github.japgolly.scalajs-benchmark" %%% "benchmark" % "0.10.0"- You write benchmarks.
import japgolly.scalajs.benchmark._
import japgolly.scalajs.benchmark.gui._
object Example {
val suite = GuiSuite(
Suite("Example Benchmarks")(
// Benchmark #1
Benchmark("foreach") {
var s = Set.empty[Int]
(1 to 100) foreach (s += _)
s
},
// Benchmark #2
Benchmark("fold") {
(1 to 100).foldLeft(Set.empty[Int])(_ + _)
}
)
)
}(Hey, can you make that 1 to 100 configurable in the GUI? You sure can.)
-
Add a tiny loader HTML like this.
-
Create a main app and point
scalajs-benchmarkat your suite of benchmarks.
import org.scalajs.dom.document
import japgolly.scalajs.benchmark.gui.BenchmarkGUI
object Main {
def main(args: Array[String]) = {
val body = document getElementById "body"
BenchmarkGUI.renderSuite(body)(Example.suite)
}
}If you have a library of different benchmarks, instead of using renderSuite,
you use renderMenu to create an app that lets the user navigate the library and
run benchmarks.
Example:
BenchmarkGUI.renderMenu(body)(
suites.example.Examples.all,
suites.scala.all)- Compile; run in browser. Done.
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Note: This is not affiliated with the official Scala.JS project; it's just named to be informative rather than interesting.