Dart编程实例 - Static 关键字

class StaticMem {

   static int num;  

   static disp() {

      print("The value of num is ${StaticMem.num}")  ;

   }

}  

void main() {

   StaticMem.num = 12;  

   // initialize the static variable }

   StaticMem.disp();   

   // invoke the static method

}