Why the coalescing comparison operators exist

#!ek9
defines module site.operators.coalescingbenefit

  defines function

    functionToGetBird1() as pure
      <- rtn as String: String()

    functionToGetBird2() as pure
      <- rtn as String: "Duck"

  defines program

    CoalescingBenefit()
      stdout <- Stdout()

      //Values to work with
      bird1 <- functionToGetBird1()
      bird2 <- functionToGetBird2()

      //Without using new operators
      answerA <- String()
      if not bird1?
        answerA := bird2
      else if not bird2?
        answerA := bird1
      else
        answerA := bird1 < bird2 <- bird1 else bird2

      //With the new operator
      answerA := bird1 <? bird2

      //With the new operator and function calls
      answerA := functionToGetBird1() <? functionToGetBird2()
      //Without the new operators, you would want to avoid multiple calls!

      stdout.println(answerA)

Duck