I'm converting my old project from DispatchQueue to async await, there's a time consuming operation which I wrapped in the global dispatch queue: DispatchQueue.global().async { self.processed = processData(input) DispatchQueue.main.async { render() // reload UI with self.processed } } processData() is…
I'm working on some code which needs to be changed to be async (because of library upgrade). My code has same base class which is inherited by other classes and I want to call some functions in constructor which are…
I am learning JavaScript and just went over Promises. I tried to write a loop that looked similar to this: for (let i of someArray) { if (condition) { await returnsPromise(i) } } This code does not work, and I…
I am making a Flutter and Firebase app. I want to show data from the database, store it in a list and then display it on the screen. This code is working well, but when my screen loads, for half…
I have function that reads BLE characteristics data (numers in List type). I want to run it asynchronously after widget is built. I need access to context variable (Because of Provider - state management library). Data gathered from device are…
Let's say I have 4 API calls that might call more APIs. Then, I go into main() {} and I write api1(); api2(); api3(); While the body of each is: { await getData(); getMoreData(); getMoreData(); } Note that I don't…
I'm having this issue with certain API's, where invalid links are still "ok". Here for the ticker symbol I typed a bunch of random letters in place of an actual ticker: ...ticker=AAsdfsPL... as opposed to ...ticker=AAPL... The API link itself…
I'm stuck with a work-related task where I'm fetching data from the db and then send the data to an external api through post request. Right now I'm succesfully getting the data and processed it but the external api request…
I am using an observable to retrieve data from an http like: handleError(error:any) { ... } getData() { return this._api_service.http.get<JSON>(this._url).pipe(retry(1), catchError(this.handleError)); } loadData() { this.getData().subscribe((data: {}) => { do_something_to_data(data); }); // here I want to do somethings after all the…
When I click 'CLICK ME' repeatedly and quickly, why is there a possibility that console.log(`===${innerCount}.2`); is executed earlier over console.log(`===${innerCount}.1`); Here is the CodeSandBox: https://codesandbox.io/s/loving-blackburn-v4k5y4?file=/src/App.js:651-666 throttle is from lodash. let count = 0; const App = () => { const…