Node-RED简介Node-RED 是构建物联⽹(IOT， Internet of Things)应⽤程序的⼀个强⼤⼯具，其重点是简化代码块的“连接”以执⾏任务。它使⽤可视化编程⽅法，允许开发⼈员将预定义的代码块（称为“节点”，Node）连接起来执⾏任务。连接的节点，通常是输⼊节点、处理节点和输出节点的组合，当它们连接在⼀起时，构成⼀个“流”(Flows)。Node-RED最初是IBM在2013
The three wishes三个愿望A couple wishes for good luck. A fairy comes to them and says,”You may have three wishes.” The wife is very happy. She doesn’t think much and says, “I wish I had a delicious sausag
