Logical Operators

Logical Operators

Logical operators combine Boolean expressions: && (AND), || (OR), and ! (NOT). && and || short-circuit -- if the left side already determines the result, the right side is never evaluated. This matters when the right side has side effects or could throw.

Note: Short-circuiting lets you safely write if (list.nonEmpty && list.head > 0) without risking an error on an empty list.

Example: Logical Operators

object Main extends App {
  val isLoggedIn = true
  val isAdmin = false

  println(isLoggedIn && isAdmin)
  println(isLoggedIn || isAdmin)
  println(!isAdmin)
}