if not a and not b or not b and not a...

I just found this code that I thought was humorous (identifiers changed to protect intellectual property):



private boolean allFoosAreBarsOrBazs() {

 for (Foo foo: foos) {
  if (!(foo instanceof Bar)) {
   if (!(foo instanceof Baz)) {
    return false;
   }
  }

  if (!(foo instanceof Baz)) {
   if (!(foo instanceof Bar)) {
    return false;
   }
  }
 }
 return true;
}

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