asynchronous

问题 I have a requirement that background service should run Process method every day at 0:00 a.m. So, one of my team member wrote the following code: public class MyBackgroundService : IHostedService, IDisposable { private readonly ILogger _logger; private Timer _timer; public MyBackgroundService(ILogger<MyBackgroundService> logger) { _logger = logger; } public void Dispose() { _timer?.Dispose(); } public Task StartAsync(CancellationToken cancellationToken) { TimeSpan interval = TimeSpan

问题 I'm working with a client application which needs to request data from a Rest API. Many of these requests are independent, so they could be called asynchronously. I'm using ThreadPoolExecutor to do so, and I've seen it can be configured with several parameters: corePoolSize maxPoolSize queueCapacity I read this article and I understand the following: corePoolSize is the value below of which executor adds a new thread rather than queuing it maxPoolSize is the value above of which executor

问题 I'm working with a client application which needs to request data from a Rest API. Many of these requests are independent, so they could be called asynchronously. I'm using ThreadPoolExecutor to do so, and I've seen it can be configured with several parameters: corePoolSize maxPoolSize queueCapacity I read this article and I understand the following: corePoolSize is the value below of which executor adds a new thread rather than queuing it maxPoolSize is the value above of which executor

问题 I'm attempting to use a named pipe using a .net NamedPipeServerStream asynchronously using callbacks in powershell. I'm currently using the following code: Server side: $myCallback = [AsyncCallback]{ "Connected" } $pipe = New-Object System.IO.Pipes.NamedPipeServerStream("alert", [System.IO.Pipes.PipeDirection]::InOut, 1, [System.IO.Pipes.PipeTransmissionMode]::Message, [System.IO.Pipes.PipeOptions]::Asynchronous) $pipe.BeginWaitForConnection($myCallback, "alertCallback") Client side: $pipe =

问题 I am currently reading Async Javascript by Trevor Burnham. This has been a great book so far. He talks about this snippet and console.log being 'async' in the Safari and Chrome console. Unfortunately I can't replicate this. Here is the code: var obj = {}; console.log(obj); obj.foo = 'bar'; // my outcome: Object{}; 'bar'; // The book outcome: {foo:bar}; If this was async, I would anticipate the outcome to be the books outcome. console.log() is put in the event queue until all code is executed,

问题 I'm currently learning Dart, but this is also applicable to what's going on in the JavaScript world right now, and it seems like C# also uses the same pattern. In Dart, any function that uses await must itself be labeled asynchronous through async as follows: import "dart:html"; main() async { var context = querySelector("canvas").context2D; var running = true; while (running) { var time = await window.animationFrame; ... } } This does not make sense to me. If a function is waiting on an

问题 I'm currently learning Dart, but this is also applicable to what's going on in the JavaScript world right now, and it seems like C# also uses the same pattern. In Dart, any function that uses await must itself be labeled asynchronous through async as follows: import "dart:html"; main() async { var context = querySelector("canvas").context2D; var running = true; while (running) { var time = await window.animationFrame; ... } } This does not make sense to me. If a function is waiting on an

问题 How does one read and split/chunk a file by the number of lines? I would like to partition a file into separate buffers, while ensuring that a line is not split up between two or more buffers. I plan on passing these buffers into their own pthreads so they can perform some type of simultaneous/asynchronous processing. I've read the answer below reading and writing in chunks on linux using c but I don't think it exactly answers the question about making sure that a line is not split up into

问题 I have some code using javascript async/await: function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function fun1() { console.log("dosomething1"); await sleep(6000); console.log("dosomething2"); return "returnfromfun1"; } console.log(fun1()); console.log("hello"); According to the official document about async/await: An async function can contain an await expression that pauses the execution of the async function and waits for the passed Promise's resolution,

问题 I have some code using javascript async/await: function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function fun1() { console.log("dosomething1"); await sleep(6000); console.log("dosomething2"); return "returnfromfun1"; } console.log(fun1()); console.log("hello"); According to the official document about async/await: An async function can contain an await expression that pauses the execution of the async function and waits for the passed Promise's resolution,