Arrays AS3使默认数组工作:函数示例(human:array=[“heart”和“skull”])?

Arrays AS3使默认数组工作:函数示例(human:array=[“heart”和“skull”])?,arrays,actionscript-3,Arrays,Actionscript 3,因此,唯一有效的办法是: function example(human:Array = null) { if (human == null) human = ["heart","skull"] } 为什么我能做到: function example(human:String = "Heart"){} function example(human:Number = 1){} 但是 给我: Scene 1, Layer 'Layer 1', Frame 1, Line 1 1047:

因此,唯一有效的办法是:

function example(human:Array = null)
{
  if (human == null)
  human = ["heart","skull"]
}
为什么我能做到:

function example(human:String = "Heart"){}
function example(human:Number = 1){}
但是

给我:

 Scene 1, Layer 'Layer 1', Frame 1, Line 1  1047: Parameter initializer unknown or is not a compile-time constant.

if语句是否是生成默认数组参数的唯一解决方法?

ActionScript仅允许编译时常量(字符串、数字、int、null)作为默认参数。数组和对象实例不能是常量,因为它们是引用。因此,不能将它们用作默认参数

 Scene 1, Layer 'Layer 1', Frame 1, Line 1  1047: Parameter initializer unknown or is not a compile-time constant.