channel

resetting conda channel priorities

由 安稳与你 提交于 2019-12-04 17:56:08
问题 I am having issues with conda. After running commands such as: conda install -c /my_conda_channel numpy --offline --override-channels the default conda channel has now become 'my_conda_channel' so that each subsequent package from this channel supercedes the default channel, which is not what I want. I did the former just for testing purposes. How do I reset the channel behaviour? 回答1: Change the order from ~/.condarc so that defaults the first channel as channels: - defaults - conda-forge

Youtube api get latest upload thumbnail

由 試著忘記壹切 提交于 2019-12-04 12:25:01
I am looking to returning the video-thumbnail of the latest uploaded video from my channel, and display it on my website. Anyone know how I can do a minimal connection trough api and get only the thumbnail? Thanks! -Tom REVISED!! Using Cakephp, this is how I did it (thanks dave for suggestions using zend); controller: App::import('Xml'); $channel = 'Blanktv'; $url = 'https://gdata.youtube.com/feeds/api/users/'.$channel.'/uploads?v=2&max-results=1&orderby=published'; $parsed_xml =& new XML($url); $parsed_xml = Set::reverse($parsed_xml); //debug($parsed_xml); $this->set('parsed_xml',$parsed_xml)

WCF ChannelFactory and Channel caching in ASP.NET client application

由 独自空忆成欢 提交于 2019-12-04 12:12:06
问题 I'm building a series of WCF Services that are going to be used by more than one application. Because of that I'm trying to define a common library to access WCF services. Knowing that each service request made by different users should use a different Channel I'm thinking in cache the Channel per-request ( HttpContext.Current.Items ) and cache the ChannelFactory used to create the channel per Application ( HttpApplication.Items ) since I can create more than one channel with the same

RabbitMQ: How to specify the queue to publish to?

由 牧云@^-^@ 提交于 2019-12-04 10:49:39
问题 RabbitMQ's Channel#basicConsume method gives us the following arguments: channel.basicConsume(queueName, autoAck, consumerTag, noLocal, exclusive, arguments, callback); Giving us the ability to tell RabbitMQ exactly which queue we want to consume from. But Channel#basicPublish has no such equivalency: channel.basicPublish(exchangeName, routingKey, mandatory, immediateFlag, basicProperties, messageAsBytes); Why can't I specify the queue to publish to here?!? How do I get a Channel publishing

Can't POST JSON to server using Netty

由 天涯浪子 提交于 2019-12-04 09:55:35
I'm stuck on a really, really basic problem: Using HttpRequest to POST a wee bit of JSON to a server using Netty. Once the channel is connected, I prepare the request like this: HttpRequest request = new DefaultHttpRequest( HttpVersion.HTTP_1_1, HttpMethod.POST, postPath); request.setHeader(HttpHeaders.Names.CONTENT_TYPE, "application/json"); String json = "{\"foo\":\"bar\"}"; ChannelBuffer buffer = ChannelBuffers.copiedBuffer(json, CharsetUtil.UTF_8); request.setContent(buffer); channel.write(request); System.out.println("sending on channel: " + json); The last line prints out {"foo":"bar"} ,

Is there some elegant way to pause & resume any other goroutine in golang?

由 感情迁移 提交于 2019-12-04 08:07:55
问题 In my case, I have thousands of goroutines working simultaneously as work() . I also had a sync() goroutine. When sync starts, I need any other goroutine to pause for a while after sync job is done. Here is my code: var channels []chan int var channels_mutex sync.Mutex func work() { channel := make(chan int, 1) channels_mutex.Lock() channels = append(channels, channel) channels_mutex.Unlock() for { for { sync_stat := <- channel // blocked here if sync_stat == 0 { // if sync complete break } }

list all elements in a buffered channel

由 半世苍凉 提交于 2019-12-04 07:48:05
Is there a (non destructive) way to list all the element in a buffered channel? The only thing I can think about is to cycle all of them, reinserting them at the end. This doesn't seem the smartest approach. Link to playground c := make(chan int, 100) c <- 111 c <- 222 for i:=0;i<2;i++ { element := <- c fmt.Println(element) c <- element } fmt.Println(len(c)) This thread from 2011 offered some wrapper around a channel in order to enable a Peek() function, but that was more a workaround than anything else. type PeekChanInt struct { in <-chan int out chan int } The general conclusion was: A

How to check a channel is closed or not without reading it?

由 丶灬走出姿态 提交于 2019-12-04 07:42:17
问题 This is a good example of workers & controller mode in Go written by @Jimt, in answer to "Is there some elegant way to pause & resume any other goroutine in golang?" package main import ( "fmt" "runtime" "sync" "time" ) // Possible worker states. const ( Stopped = 0 Paused = 1 Running = 2 ) // Maximum number of workers. const WorkerCount = 1000 func main() { // Launch workers. var wg sync.WaitGroup wg.Add(WorkerCount + 1) workers := make([]chan int, WorkerCount) for i := range workers {

How are Go channels implemented?

由 一曲冷凌霜 提交于 2019-12-04 07:25:51
问题 After (briefly) reviewing the Go language spec, effective Go, and the Go memory model, I'm still a little unclear as to how Go channels work under the hood. What kind of structure are they? They act kind of like a thread-safe queue /array. Does their implementation depend on the architecture? 回答1: The source file for channels is (from your go source code root) in /src/pkg/runtime/chan.go. hchan is the central data structure for a channel, with send and receive linked lists (holding a pointer

Customized channel wifi direct

由 北战南征 提交于 2019-12-04 06:52:13
问题 Can anyone tell me, is there any option to customize wifi direct channels? I need to customize it not only between ch1, ch6 and ch11, but also in another channels selected by me. How can I do that? 回答1: In order to change the channel of the Wifi Direct of your device you need to do the following: 1- Root your phone 2- Download any File manager App: Such as ES File Explorer 3- On ES File Explorer, go to Tools, then turn ON the Root Explorer and click on it then mount RW 4- Using ES File
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