lambdas variations in scala / published by https://github.com/dacr/code-examples-manager #4664cc4a-aa71-430c-ab64-76f33effa7b5/f808b85b3b4f129aa514afd96134d2c9364c1cb9

scala-lambdas.sc

// summary : lambdas variations in scala
// keywords : scala, language-feature, fold, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 4664cc4a-aa71-430c-ab64-76f33effa7b5
// created-on : 2021-10-16T10:54:03+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "org.scalatest::scalatest:3.2.16"
//> using objectWrapper
// ---------------------

import org.scalatest._, flatspec._, matchers._, OptionValues._

class ThatSpec extends AnyFlatSpec with should.Matchers {
  override def suiteName = "ThatSpec"

  "identify function" should "do nothing" in {
    Some(true).map(identity) shouldBe Some(true)
    Some(false).map(identity) shouldBe Some(false)
  }

  "magic function placeholder" should "be usable in many situations" in {
    Some(true).filter(if (_) false else true) shouldBe None
  }
}

org.scalatest.tools.Runner.main(Array("-oDF", "-s", classOf[ThatSpec].getName))