按照coefs <- sapply(1:n, function(z){
train_indices <- dat_list[[z]]
m <- lm(price ~ carat, data = dat[train_indices,])
return(unname(m$coefficients[2]))
})
的说明创建WebSocket服务器:
ws
为每个客户创建一个名为const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });
wss.on('connection', function connection(ws) {
ws.on('message', function incoming(message) {
console.log('received: %s', message);
});
ws.send('something');
});
的onMessage回调,我是对的吗?
想象一下拥有两百万个客户。此代码将创建200万个函数。有办法避免这种情况吗?这样的事情会很精彩:
incoming
答案 0 :(得分:-1)
怎么样:
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });
function handleMessage(message) {
console.log('received: %s', message);
}
wss.on('message', handleMessage);