channel

Kotlin Channels usage difference between Send and Offer

由 ≯℡__Kan透↙ 提交于 2020-06-17 00:07:58
问题 Channels have two functions that allow us to send events into it. Send and offer . I would like to understand better the difference between both. I have some statements I wanna check are true. Send is a suspend function. What will make my code(not the thread) wait for it to finish. So it keep running after the event inside send was complete/cancelled. OR it will be suspend only until I can queue the event/receive it? This means that, if I use send from one channel to another, the first

WebRTC datachannel with manual signaling, example please?

由 |▌冷眼眸甩不掉的悲伤 提交于 2020-06-11 07:53:26
问题 I'm really struggling to get a complete example of a WebRTC datachannel example that I can copy/paste and it works. I would like a Javascript example of WebRTC datachannel with manual signaling i.e. When the example loads, it provides the Signaling data in one text box. I copy data manually (highlight, copy) and paste it in the peer's window which has a text box to accept that signaling data. I believe there needs to be an "answer" in the signaling data, so there need to be corresponding text

Does a channel return two values?

由 淺唱寂寞╮ 提交于 2020-06-06 16:03:10
问题 I saw some code in this link, and got confused:http://www.darkcoding.net/software/go-lang-after-four-months/ What's the meaning of the second value(ok)? for self.isRunning { select { case serverData, ok = <-fromServer: // What's the meaning of the second value(ok)? if ok { self.onServer(serverData) } else { self.isRunning = false } case userInput, ok = <-fromUser: if ok { self.onUser(userInput) } else { self.isRunning = false } } } 回答1: The boolean variable ok returned by a receive operator

Wait result of multiple goroutines

由 独自空忆成欢 提交于 2020-05-08 07:03:35
问题 I am searching a way to execute asynchronously two functions in go which returns different results and errors, wait for them to finish and print both results. Also if one of function returned error I do not want to wait for another function, and just print the error. For example, I have this functions: func methodInt(error bool) (int, error) { <-time.NewTimer(time.Millisecond * 100).C if error { return 0, errors.New("Some error") } else { return 1, nil } } func methodString(error bool)

Wait result of multiple goroutines

由 烈酒焚心 提交于 2020-05-08 07:02:09
问题 I am searching a way to execute asynchronously two functions in go which returns different results and errors, wait for them to finish and print both results. Also if one of function returned error I do not want to wait for another function, and just print the error. For example, I have this functions: func methodInt(error bool) (int, error) { <-time.NewTimer(time.Millisecond * 100).C if error { return 0, errors.New("Some error") } else { return 1, nil } } func methodString(error bool)

Orange的扩展插件Widgets开发（四）－Channels和Tokens

由 拜拜、爱过 提交于 2020-04-06 22:39:44
Orange的扩展插件Widgets开发（四） Channels 和 Tokens 我们上次介绍的数据抽样的widget例子，在数据传输通道上是简单和直接的。widget 被设计从一个widget接收数据，处理后将Token通过另外一个Channel发送出去。像下面这个图一样： 关于channels和tokens的管理，其实这里有一些更多的情况，这里我们将更复杂的事情做一个概览，这些了解可以帮助你做出一些复杂的widgets，用于处理多路输出、多路输入的一些处理逻辑。 多输入通道：Multi-Input Channels 简单来说，“multi-input” channels 就是这个widget可以与多个widgets的多个output channels进行连接。这样子的话，多个来源的数据可以被 feed 到一个Widget中进行处理，就像一个函数可以输入多个参数一样的情况。 比如说，我们想构建一个widget，将获取数据并且通过多种预测模型在之上进行测试。widget必须有 input data channel, 我们已经知道如何进行处理。但是，不同的是，我们希望连接多个widgets，像下图定义的逻辑： 我们将了解如何定义learning curve widget的多个channels，以及如何管理多个input tokens。但在此之前，先简单说明一下： learning

appengine channel no messages arrive

由 烈酒焚心 提交于 2020-01-25 12:46:17
问题 I am trying to get the channel api working. This is what I have so far: in the view: def channel_test(channel_token): tries = 1 logging.info('starting channel_test') for attempt in range(tries): message = 'this is message number: ' + str(attempt) channel.send_message(channel_token, message) logging.info('just sent: ' + message) logging.info(channel_token) def viewfunc(): channel_token = channel.create_channel('aosasdf123') deferred.defer(channel_test, channel_token, _countdown=10) return

appengine channel no messages arrive

由 ぐ巨炮叔叔 提交于 2020-01-25 12:46:10
问题 I am trying to get the channel api working. This is what I have so far: in the view: def channel_test(channel_token): tries = 1 logging.info('starting channel_test') for attempt in range(tries): message = 'this is message number: ' + str(attempt) channel.send_message(channel_token, message) logging.info('just sent: ' + message) logging.info(channel_token) def viewfunc(): channel_token = channel.create_channel('aosasdf123') deferred.defer(channel_test, channel_token, _countdown=10) return

spring integration : response message not sent to client from error-channel

由 旧城冷巷雨未停 提交于 2020-01-24 13:03:52
问题 I've the understanding that Spring Integration (SI) will wrap any exception (under the SI domain) to a MessageException instance and place it on the "error-channel". Following are few snippets from my spring config file : <int:channel-interceptor pattern="ersServiceReqRcvPostValidationChannel,ersServiceResRcvPostValidationChannel" order="1"> <bean class="com.bnym.ecs.report.service.orchestration.interceptors.MsgJSONSyntaxValidationInterceptor"/> </int:channel-interceptor> <int:channel

spring integration : response message not sent to client from error-channel

由 不想你离开。 提交于 2020-01-24 13:03:11
问题 I've the understanding that Spring Integration (SI) will wrap any exception (under the SI domain) to a MessageException instance and place it on the "error-channel". Following are few snippets from my spring config file : <int:channel-interceptor pattern="ersServiceReqRcvPostValidationChannel,ersServiceResRcvPostValidationChannel" order="1"> <bean class="com.bnym.ecs.report.service.orchestration.interceptors.MsgJSONSyntaxValidationInterceptor"/> </int:channel-interceptor> <int:channel
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