I found this line:
return (<-chan Delivery)(deliveries), nil
https://github.com/streadway/amqp/blob/master/channel.go#L1089
What does it do? Why the double parentheses?
`（<-chan Delivery）（deliveries）`是做什么的？
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3条回答 默认 最新
- dongshang5862 2015-01-21 12:21关注
It's a type conversion. In your case, it converts
chan Delivery(two-way channel ofDeliveryvalues) to<-chan Delivery(receive-only channel ofDeliveryvalues).本回答被题主选为最佳回答 , 对您是否有帮助呢?解决 无用评论 打赏举报 分享
- 2015-01-21 12:18回答 3 已采纳 It's a type conversion. In your case, it converts chan Delivery (two-way channel of Delivery value
- 2017-08-24 15:37回答 2 已采纳 http://blog.csdn.net/hahalidaxin/article/details/51017196
- 2014-10-10 09:36回答 2 已采纳 I will answer question 2 and 3 first because the answer provides context for my answer to question
- 2018-05-14 08:53尹成的博客 func (s *scheduler) scheduleRequests(reqs chan uint64, dist chan *request, pend chan uint64, quit chan struct{}, wg *sync.WaitGroup) { // Clean up the goroutine and pipeline when done defer wg....
- 2018-12-04 17:51回答 1 已采纳 http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=2903
- 2017-01-01 01:22回答 1 已采纳 After some help, I now have four solutions to get my data, though really three of them are variant
- 2013-06-07 04:29回答 1 已采纳 Ended up switching to Laravel 4 and doing the ff which seemed to work. Order::leftJoin('deliverie
- 2018-05-14 09:13尹成的博客 deliver chan *stateReq // Delivery channel multiplexing peer responses cancel chan struct{} // Channel to signal a termination request cancelOnce sync.Once // Ensures cancel only ever gets ...
- 2019-06-07 18:03回答 1 已采纳 You have min.insync.replicas=2, but the topic only has one replica. If you have request.required.
- 2018-05-14 09:12尹成的博客 可以看到做了一些合法性检查之后，把任务插入了blockTaskPool，receiptTaskPool，receiptTaskQueue，receiptTaskPool。 TaskPool是Map，用来记录header的hash是否存在。 TaskQueue是优先级队列，优先级是区块的高度...
- 2018-11-22 15:02boss2967的博客 func (s *scheduler) scheduleRequests(reqs chan uint64, dist chan *request, pend chan uint64, quit chan struct{}, wg *sync.WaitGroup) { // Clean up the goroutine and pipeline when done defer wg.Done...
- 2018-11-24 20:35boss2967的博客 deliver chan *stateReq // Delivery channel multiplexing peer responses cancel chan struct{} // Channel to signal a termination request cancelOnce sync.Once // Ensures cancel only ever gets called ...
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- 2022-10-09 15:40小僵尸打字员的博客 error) { deliveries := make(chan amqp.Delivery) go func() { for { d, err := ch.Channel.Consume(queue, consumer, autoAck, exclusive, noLocal, noWait, args) if err != nil { log.Printf(...
- 2021-02-04 19:07weixin_39689394的博客 func (srv *server) Run(deliveries <-chan amqp.Delivery) { go func() { // 处理消息 for d := range deliveries { // 开启一个独立协程处理消息，如果不想并行处理多条消息，可以将go关键字去掉 go srv....
- 2019-09-27 11:12DoubleCherish的博客 上面主要介绍了下状态同步线程stateFetcher何时开启，开启后做了什么事情。下面开始讲解何时触发了状态同步 // 1、首先回忆downloader处理快速同步内容的方法processFastSyncContent func ( d * Downloader...
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