前言
由于JS没有private关键字,无法私有化构造器,所以下面代码无法限制:
class Person {constructor() {console.log("Person created");}
}const p1 new Person();
const p2 new Person();console.log(p1 p2); // false实现 …
1.相关概念 Nodes:A node is an executable that uses ROS to communicate with other nodes.Messages: ROS data type used when subscribing or publishing to a topic.Topics: Nodes canpublishmessagesto a topic as well assubscribetoa topic to receive messages.Master…