Nodej阻塞，直到异步调用完成？

Question

如何让nodejs应用程序等待异步调用完成？

main.coffee：

hosts = require './suhosts'
dns = require 'dns'
async = require 'async'

data = {}
async.each hosts, (host, cb_e) ->
   dns.lookup host,  (err, address, family)-> data[host] = address
 , () ->
   console.log data

如果像coffee main.coffee那样运行它，它将在完成工作之前退出。

Answer 1

您没有拨打所需的SGrid1.ColumnByIndex(1).HorizontalAlign := TTextAlign.Leading; 回拨。

async.each