Ternary Lazy Evaluation Demo (salesforce.com Apex Code)

TernaryLazyEvalTest.cls

@isTest class TernaryLazyEvalTest {
  static Integer counter = 0;
  static Boolean flag { get; set { counter++; flag = value; } }
  
  static Boolean setTrue() {
    return flag = true;
  }
  static Boolean setFalse() {
    return flag = false;
  }
  
  @isTest static void unitTest() {
    Boolean result = Math.random()<0.5?setTrue():setFalse();
    // If counter is two, that means both sides of ternary were evaluated
    System.assertEquals(1, counter);
  }
}