我不确定这是正确的行为还是无意的。我设置了StealthFighter，以便它返回一个名为ammunition的类类型计算属性变量。funcglobalTests(){println("globalTests")println("AMMUNITION:\(StealthFighter.ammunition)")varmyStealthFighter=StealthFighter()println("MISSILES:\(myStealthFighter.missiles)")println("AMMUNITION:\(myStealthFighter.ammunition)")//ER
