asynchronous

问题 I use Springboot2 and Java 8. I have been banging my head to the wall on this one, hours spent but no clue what the problem is. I try to make two independent external calls via CompletableFuture. once both they complete I want to combine their results and return to the user. On the logs I see first request is successfull but I get HTTP 503 error on the second request just on the line "restTemplate.postForEntity(..)" Note: I do NOT use any Spring based @Async (or any Spring non blocking code)

问题 So I want the code inside loop to run simultaneously but the code after the loop to run only when loop is done processing: Code async function asyncForEach(array, callback) { for (let index = 0; index < array.length; index++) { await callback(array[index], index, array); } } const waitFor = (ms, num) => new Promise(r => setTimeout(() => { console.log(num) r() }, ms)); const doStuff = async() => { await asyncForEach([1, 2, 3], async(num) => { await waitFor(1000, num); }) console.log('Done'); }

问题 I have a function foo which makes an asynchronous request. How can I return the response/result from foo ? I tried returning the value from the callback, as well as assigning the result to a local variable inside the function and returning that one, but none of those ways actually return the response (they all return undefined or whatever the initial value of the variable result is). Example using jQuery's ajax function: function foo() { var result; $.ajax({ url: '...', success: function

问题 I have a function foo which makes an asynchronous request. How can I return the response/result from foo ? I tried returning the value from the callback, as well as assigning the result to a local variable inside the function and returning that one, but none of those ways actually return the response (they all return undefined or whatever the initial value of the variable result is). Example using jQuery's ajax function: function foo() { var result; $.ajax({ url: '...', success: function

问题 I am trying to write an SSH script for some routers/switches to read out information using SSH.Net. I want to build it asynchronous because they are pretty slow with high latency. I can connect and send a command, but if I try to read it out, I just get some blank lines. If I run the WriteLine() method like 7 times in a row, I see like 2 of the expected outputs. I hope you can help me. Here is my code: private static string _srv = "255.255.255.255"; private static string _usr = "looping";

问题 I am trying to chain Task<T> objects in C# as done in JavaScript and without blocking the UI thread. I see there is a similar question here, but it uses the non-generic Task object as a return type of the process functions. I try to do the same with Task<T> . I also see that here is a closer question to my needs, but the accepted answer seems to use .Result twice, which I guess will block the UI thread. Also, note that I chain tasks dynamically, so I can't follow some easy workarounds. And

问题 I'm writing my first telegram bot with telepot and telethon my main code is: import sys import asyncio import random import telepot import telepot.aio from telepot.aio.loop import MessageLoop from telepot.namedtuple import ReplyKeyboardMarkup, KeyboardButton, ReplyKeyboardRemove, ForceReply from telepot.namedtuple import InlineKeyboardMarkup, InlineKeyboardButton from telepot.namedtuple import InlineQueryResultArticle, InlineQueryResultPhoto, InputTextMessageContent async def on_chat_message

问题 I'm writing my first telegram bot with telepot and telethon my main code is: import sys import asyncio import random import telepot import telepot.aio from telepot.aio.loop import MessageLoop from telepot.namedtuple import ReplyKeyboardMarkup, KeyboardButton, ReplyKeyboardRemove, ForceReply from telepot.namedtuple import InlineKeyboardMarkup, InlineKeyboardButton from telepot.namedtuple import InlineQueryResultArticle, InlineQueryResultPhoto, InputTextMessageContent async def on_chat_message

问题 I'm trying to do perform an asynchronous operation that will grab data and affect the style of my webpage. Is there a way to make this operation finish before the page loads? Since I want to change an actual attribute of a div element, I know this is unlikely but I'd like to get your guys ideas on how to accomplish this. Maybe by storing the data in the browser session or something so that it only has to think one? I'm not sure var grab_user = new Firebase("https://<FIREBASE>.firebaseio.com

问题 I'm trying to make use of cancellation tokens as described in this FAQ. This was my initial thought: private async void OnLoginButtonClicked(object sender, EventArgs e) { if (this.cancelToken == null) { this.cancelToken = new CancellationTokenSource(); } try { bool loginSuccess = await AsyncLoginTask(this.cancelToken.Token); if (loginSuccess) { // Show main page } } catch (OperationCanceledException ex) { System.Diagnostics.Debug.WriteLine(ex.Message); } catch (Exception ex) { System