as 复制一个xml对象

创建了一个复制的原始xml对象,以便它可以按值传递

package{
  import flash.display.sprite;
 
  public class main extends sprite{
    public function main(){

        var template:xml = <person><name><first /><last /></name></person>;
        var me:xml = template.copy();
        me.name.first = "mims";
        me.name.last = "wright";
        trace(template);
       
        trace(me);
    }
  }
}