A nodeJS script. I have a function in it: async myFunc1(a, b, c) { //……. } which returns some value but not Promise. I used to run it as this: let a1 = await myFunc1(1, "fds", 99); Now I need to run dozens of them at the same time, and the input of the amount… Read More How to run async functions in parallel?
I have a simple use case that I want to execute a statement inside the catch blog inside catch block of calling function. Somehow in my code there is no execution of catch block statement inside calling function async function main() { try { console.log(‘jatin’) const hello = await second() console.log(hello) //ok console.log(‘yes boy’) //ok… Read More Why does catch in the calling function is never executed?
I am trying to have controller-view structure in my Vue project, and separate frontend display and frontend logic into two files. In the component, I would make a functional call to a controller method, and in the controller method, it will interact with backend API, but it seems like the async function is not working.… Read More Cross File Javascript Async Function
I call two APIs to get a random GIF from GIPHY. I want to call my gif() function two times. Therefore, I use the promises array. Right now I get an error when returning the object in the gif() function. return { img: responseJSON.data[0].images.original.url, word: wordJSON.word } img: responseJSON.data[0].images.original.url, TypeError: Cannot read properties of undefined… Read More Error while accessing variable of a JSON object
I am using async methods and a SemaphoreSlim object to wait for and detect a click. Eventually, on a different method being called, I want to stop the async method that is being run and continue as if the method completed. Incase it affects the answer, I am using Windows Forms. Here is a skeleton… Read More How do I stop an async method I am waiting for from outside the method
I’m studying asynchronous programming on C# and I wrote this piece of code: namespace CSharpThreading { internal class Program { static async Task Main(string[] args) { Task taskA = MethodToBeCalledParallelly(100); Task taskB = MethodToBeCalledParallelly(200); Task taskC = MethodToBeCalledParallelly(300); int a = await taskA; int b = await taskB; int c = await taskC; } static… Read More How to get return from async method on Task
I have created simple async function to fetch all records from cloudkit for a given types: func fetchAllOf( types: [String], handler: ProgressHandler?, completion: ErrorHandler? ) async { var newTypes = types var allRecords = [CKRecord]() newTypes.forEach { type in await fetchAllOf(type: type, handler: handler) { records, error in guard let error = error else {… Read More Cannot pass function of type '(String) async -> ()' to parameter expecting synchronous function type
I have created simple async function to fetch all records from cloudkit for a given types: func fetchAllOf( types: [String], handler: ProgressHandler?, completion: ErrorHandler? ) async { var newTypes = types var allRecords = [CKRecord]() newTypes.forEach { type in await fetchAllOf(type: type, handler: handler) { records, error in guard let error = error else {… Read More Cannot pass function of type '(String) async -> ()' to parameter expecting synchronous function type
What is the difference between: async function subfunc(){ await something() } async function func(){ subfunc() // subfunc is not awaited but something inside it is } func() and async function subfunc(){ await something() } async function func(){ await subfunc() // subfunc is awaited and something inside it is also } func() It sounds like it… Read More Await or not a sub function in javascript
I am trying for a day now and cannot solve this problem: I have a website where I can add contacts to a SQLite database. I want to query the database by studentID or nachname (this means last name). I have an API endpoint which seems to be working and a getContact function which only… Read More JS: Cannot search for two parameters – async gives back only the first parameter