channel

问题 I am converting a blob from a database into a PDF, using Java's Channel classes. When using a Channel's transferFrom( ) method, you are supposed to specify the maximum number of bytes to be transferred. How are you supposed to find this maximum number of bytes when ReadableByteChannels don't have a size( ) method like other Channels? Is a ReadableByteChannel not the right tool for the job since it doesn't have a size( ) method? I'm just using Long.MAX_VALUE which doesn't seem right. Example

问题 I'm trying to send a signal from within a closure, using the following code. use std::thread; use std::sync::mpsc::channel; fn main() { let (tx, rx) = channel(); let t1 = thread::spawn(move || { watch(|x| tx.send(x)); }); let t2 = thread::spawn(move || { println!("{:?}", rx.recv().unwrap()); }); let _ = t1.join(); let _ = t2.join(); } fn watch<F>(callback: F) where F : Fn(String) { callback("hello world".to_string()); } However, it fails compiling raising the following error: src/test.rs:8:19

问题 I read sync.Pool design, but find it is two logic, why we need localPool to solve lock compete. We can just use chan to implement one. Using channel is 4x times faster than sync.pool ! Besides pool can clear object, what advantage does it have? This is the pool implementation and benchmarking code: package client import ( "runtime" "sync" "testing" ) type MPool chan interface{} type A struct { s string b int overflow *[2]*[]*string } var p = sync.Pool{ New: func() interface{} { return new(A)

问题 I'm trying to send a message to a specific channel with my Discord bot, which is in several servers. I want the bot to pick up on a message from one server and send a message to my personal server, in a specific channel, but I can't get it to 'find' the channel. Has the API changed or something? I tried npm install discord.js to update too. Code: if (message.author.id == 'XXXXX' && !mess.includes("Dank") && message.channel.id != 'XXXXX') { bot.channels.get('XXXXX').send('memes'); } I tried a

问题 I've done simple bench mark which one is more efficient among message-passing and locking for shared value. Firstly, please check code bellow. package main import ( "flag" "fmt" "math/rand" "runtime" "sync" "time" ) type Request struct { Id int ResChan chan Response } type Response struct { Id int Value int } func main() { procNum := flag.Int("proc", 1, "Number of processes to use") clientNum := flag.Int("client", 1, "Number of clients") mode := flag.String("mode", "message", "message or

问题 Telegram channels posts have the post link when it is right clicked on it and in this form: https://telegram.me/channel_name/post_ID The question is how we can read the content of that posts (text, image, video, audio) using a bot on the server? 回答1: There is no way to do this at the moment. You can try using the telegram-cli ( test branch supports channels), but it cannot find the post by its POST_ID — only by the full message id. 来源： https://stackoverflow.com/questions/37888354/how-to-read

问题 I'm trying to build a network with two orders using Kafka. In the first network example there is a script named./script.sh that creates a channel with an associated orderer that runs this command: peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem >&log.txt I already

问题 I'm trying to build a network with two orders using Kafka. In the first network example there is a script named./script.sh that creates a channel with an associated orderer that runs this command: peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem >&log.txt I already

问题 I need to establish this single task with Irssi Perl script. I have my own channel and I want to sent msg directly to that channel in certain scenarios. My experience with Perl is quite limited so I haven't got this one. I am confused how to manage different chatnets and channels in Irssi Perl scripting. So how I can send message for example channel #testchan@Quakenet for example? Test one: server->command("^MSG $info{'#testchan'} $info{'Test message.'}"); Test two (tuto about scripting): sub

问题 Using the code at http://www.jcraft.com/jsch/examples/StreamForwarding.java.html, I have tried to create code that uses JSch to connect to an SSH server, then use it to connect to a server in the Web and pass HTTP(s) requests to the server, basically using the SSH server as a proxy. Here is what I have: //SSH server and credentials String host = "00.000.000.00"; String user = "login"; String password = "password"; int port = 22; //The host I want to send HTTP requests to - the remote host