asynchronous

问题 I want to know how to use WorkManager in Tomcat 7. I came across the open source library Foo-CommonJ but nowhere i found a sample code explaning the usage. The input parameter for FooWorkManager's constructor is an instance of commonj.work.work class, where as no one provides the commonj.work.work class (neither tomcat nor foo-commonj). Basically i need a sample code explaining usage of WorkManager (FooCommonj jar) in tomcat. And if Foo-Commonj doesn't support workmanager properly, then some

问题 I want to know how to use WorkManager in Tomcat 7. I came across the open source library Foo-CommonJ but nowhere i found a sample code explaning the usage. The input parameter for FooWorkManager's constructor is an instance of commonj.work.work class, where as no one provides the commonj.work.work class (neither tomcat nor foo-commonj). Basically i need a sample code explaining usage of WorkManager (FooCommonj jar) in tomcat. And if Foo-Commonj doesn't support workmanager properly, then some

问题 I am weighing the pros and cons of migrating from a relation SQL database to mongodb for a web application. This for performance issues*. Storing all object dependencies in the object itself permits quick "reads" for displaying data to users. On the other hand, some data are presents in different collections (for example username is in the users collection but also in the comments collection). I am wondering how to deal with updates of this duplicated data in order to also have quick "writes"

问题 I'd like to run all of my functions synchronously. But if I execute something like the code below the response is sent back before the return value is assigned. index.js exports.cfTest = (req, res) => { try { result = columnCount( 'project','dataset','table' ); console.log('sending response'); res.send('<OUTPUT>' + result + '</OUTPUT>'); } catch (err) { res.status(500).send('<ERROR>' + err + '</ERROR>'); } }; function columnCount(projectId, bqDataset, bqTable) { const BigQuery = require('

问题 I have read a few SO questions that touches in this question, even though many of them are several years old: How do you write a Service handler in ServiceStack API so that it becomes async/await? There are no docs on docs.servicestack.net that mentions async/await at all, I just find some community forum posts. I think that the only thing you need to do, to change this non-async method: public GetBookingResponse Get(GetBooking getBooking) { Booking booking = _objectGetter.GetBooking

问题 Async processing in Shiny is supposed to take a long-running function and give control back to the user. However, it would still be nice to let the user know that the computation is running in the background. I cannot figure out how to structure the async process to run in the background and still display a progress indicator. Below is the example code I've been fiddling with. I think the progress indicator is one issue, but also the creation of the table doesn't seem to be working with async

问题 Async processing in Shiny is supposed to take a long-running function and give control back to the user. However, it would still be nice to let the user know that the computation is running in the background. I cannot figure out how to structure the async process to run in the background and still display a progress indicator. Below is the example code I've been fiddling with. I think the progress indicator is one issue, but also the creation of the table doesn't seem to be working with async

问题 My rust program is managing memory for a 2d html canvas context, and I'm trying to hit ~60fps. I can calculate the delta between each frame easily, and it turns out to be roughly ~5ms. I'm unclear on how to put my Rust webassembly program to sleep for the remaining 11ms. One option would be to have JavaScript call into Rust on every requestAnimationFrame and use that as the driver, but I'm curious to keep it all in Rust if possible. I'm effectively looking for the Rust equivalent of

问题 My rust program is managing memory for a 2d html canvas context, and I'm trying to hit ~60fps. I can calculate the delta between each frame easily, and it turns out to be roughly ~5ms. I'm unclear on how to put my Rust webassembly program to sleep for the remaining 11ms. One option would be to have JavaScript call into Rust on every requestAnimationFrame and use that as the driver, but I'm curious to keep it all in Rust if possible. I'm effectively looking for the Rust equivalent of

问题 I have a set of F# scripts that call various libraries that we have created, many of them exposing asynchronous methods originally written in C#. Recently I found out the scripts stopped working (I think it's about half a year since I used them last time and they worked back then). I was trying to isolate the problem and came up with the following code that reproduces it: First, let's consider a library containing the following C# class: public class AsyncClass { public async Task<string>