asynchronous

问题 I'm reallt trying to get my head around async/await and Tasks . I'm trying to get one method down so that I can use it throughout my program. Basically I have my own version of BusyIndicator that I want to display whilst work is being done. Here is a basic example; private async void OnPageLoad(object sender, RoutedEventArgs e) { var waitWindow = new PleaseWaitWindow(); waitWindow.Show(); await LoadCompanyContracts(); waitWindow.Close(); } private async Task LoadCompanyContracts() { await

问题 What I am trying to achieve is can I get a better performance by using @Async and CompletableFuture as result in my controller of my RESTApi by using the multi threading in this simple way? here is what I do, here is my controller : @PostMapping("/store") @Async public CompletableFuture<ResponseEntity<ResponseRequest<CategoryBpsjResponseDto>>> saveNewCategoryBPSJ(@Valid @RequestBody InputRequest<CategoryBPSJRequestDto> request) { CompletableFuture<ResponseEntity<ResponseRequest

问题 What I am trying to achieve is can I get a better performance by using @Async and CompletableFuture as result in my controller of my RESTApi by using the multi threading in this simple way? here is what I do, here is my controller : @PostMapping("/store") @Async public CompletableFuture<ResponseEntity<ResponseRequest<CategoryBpsjResponseDto>>> saveNewCategoryBPSJ(@Valid @RequestBody InputRequest<CategoryBPSJRequestDto> request) { CompletableFuture<ResponseEntity<ResponseRequest

问题 I have written a code to return some data from asynchronous call using promise. While I try to execute I get "Syntax Error await is only valid in async function" and also I get Cannot proxy application requests...Error: connect ECONNREFUSED. I'm unsure why I get these errors I have tried using async before the function calls, but it didn't work var http = require('https'); var httpGet = function(url) { return new Promise (function(resolve, reject) { http.get(url,function(res) { res

问题 I'm trying to build a web socket using starlette which receives a message, runs calculations in a synchronous function and returns a response. @app.websocket("/ws") async def websocket_endpoint(websocket: WebSocket): await websocket.accept() while True: stock = await websocket.receive_text() stock = stock.upper() data = sentiment_analysis(stock=stock) await websocket.send_json({"score": data}) the sentiment analysis is a synchronous function. so the text is received and the calculations are

问题 I have alot of syncrhounous functions that i want to execute before that are basic ajax requests, these request will render html to the DOM. In order to do this i had to execute all of this synchrounous requests one by one. But i somehow want to these synchrounous functions asynchrounous all at the same time and wait for them to finnish in order to speed things up. This has to happen inside a synchrounous function. But my understanding is that this doesnt work in javascript, but i would like

问题 I have alot of syncrhounous functions that i want to execute before that are basic ajax requests, these request will render html to the DOM. In order to do this i had to execute all of this synchrounous requests one by one. But i somehow want to these synchrounous functions asynchrounous all at the same time and wait for them to finnish in order to speed things up. This has to happen inside a synchrounous function. But my understanding is that this doesnt work in javascript, but i would like

问题 I have alot of syncrhounous functions that i want to execute before that are basic ajax requests, these request will render html to the DOM. In order to do this i had to execute all of this synchrounous requests one by one. But i somehow want to these synchrounous functions asynchrounous all at the same time and wait for them to finnish in order to speed things up. This has to happen inside a synchrounous function. But my understanding is that this doesnt work in javascript, but i would like

问题 I have a test project with Room database. Using Asynctask I can successfully insert an object with some test data into the database. I'm trying to learn RxJava and replace Asynctask with RxJava's observer , but it doesn't work. I have read alot of documentation and watched tutorials, but I don't think I quite get it. Here's the relevant code: Here I set my Room object with the data from my List : for(ObjectForArray item: listToDatabase) { myRoomEntity.setName( item.getName() ); Log.d( "TAG",

问题 Note: I have already seen answers on Lazy Load of ListView but those are for custom API not firestore database! I have a books summary app, App fetches data from my Firebase/Firestore database and then display it using a ListView.builder which is wrapped inside a StreamBuilder . Now, I want to fetch data lazily, I mean as the user scrolls through the List the required data gets loaded rather than loading data at once and then displaying it lazily. //The Widget used to display data: Widget