asynchronous

问题 I have the following script: $("#spid").blur(function() { $.ajax({ url: 'getsponsor.php', type: "POST", dataType:'json', data: ({ spid: $("#spid").val() }) , contentType: 'application/json; charset=utf-8', success: function (result) { $("#sponname").text(result); }, error: function () { $("#sponname").text("Cannot fetch the sponsor name."); } }); }); Note: #sponname is a label tag. Following is the php code of getsponsor.php: if(!isset($_POST['spid']) || empty($_POST['spid'])) echo json

问题 I started a project with Angular 8 Metronic. I have a component with a form. I want spinner appears on submit click and disappear on API response. Here is a part of the component code : @Component({ selector: 'change-password', templateUrl: './change-password.component.html', styleUrls: ['./change-password.component.scss'], }) export class ChangePasswordComponent implements OnInit, OnDestroy { isLoading: boolean = false; ... submit() { this.isLoading = true; this.utilisateurService

问题 There's a snippet of code that I cannot seem to understand. There's a function that is declare empty at first: let dCredentials = (credentials: any) => {} Then this variable is later reasignned in a function later called: return new Promise((resolve, _) => (dispatchCredentials = resolve)) What does the second code do? Does it return anything after someone uses .then in the promise? 回答1: If you get a reference to the resolve function to outside the promise, then you can resolve it at any point

问题 This question already has answers here : How to tell a lambda function to capture a copy instead of a reference in C#? (4 answers) Closed 1 year ago . I have created a console app which print the number in a for loop using C# Task.Run() method. If you look at the code, I am initializing the Employee object in the loop and pass the number in the method, though it prints the same number. Code: class Program { static void Main(string[] args) { for (int i = 1; i <= 500; i++) { Task.Run(() => new

问题 I have built a discord but using javascript I've got one command where I want the ability to search for a youtube video and play the first result in a voice channel. I'm using the discordjs and discord-youtube-api libraries. This code looks for the command to search. The args array is the search query else if (command === 'search') { isReady = false; if (message.channel.type !== 'text') return; const { voiceChannel } = message.member; if (!voiceChannel) { return message.reply('please join a

问题 I've tried (and failed) to get [System.Delegate]::CreateDelegate( to work, New-Object [System.Threading.Tasks.Task]::Run(, to work, Start-Job with Wait-Job, Powershell does not seem to be setup to do an asynchronous task with a wait timeout? If anyone has any ideas, that'd be awesome. do { Sleep 2; $testShare = Test-Path "\\$server\c$"; Write-Host "Share availability is:" $testShare; }while($testShare -eq $true) # wait for the share to become unavailable Adams suggestion do { Sleep 1; #

问题 I am working with OpenWeatherMapAPI to calculate the sum of precipitation for the previous 5 days. To do this I have 5 async functions with api calls using the fetch api. The data received, that concerns me, is the hourly historic weather data spanning a 24 hour period. Full code bellow . The json response is stored to a constant (Ex. const histData1 ) where it is then iterated through to sum all of one values over that given 24 hour period. Note: humidity is used as a proof of concept

问题 I am working with OpenWeatherMapAPI to calculate the sum of precipitation for the previous 5 days. To do this I have 5 async functions with api calls using the fetch api. The data received, that concerns me, is the hourly historic weather data spanning a 24 hour period. Full code bellow . The json response is stored to a constant (Ex. const histData1 ) where it is then iterated through to sum all of one values over that given 24 hour period. Note: humidity is used as a proof of concept

问题 This is my code that works. I wouldn't have to do this if it weren't task based async, but using Monitor.Enter/Exit results in this problem Object synchronization method was called from an unsynchronized block of code. Exception on Mutex.Release() People have mentioned using AutoResetEvent, and SemaphoreSlim, but I'm not quite sure which pattern fits. private bool fakelock; internal async Task<byte[][]> ExchangeCore(byte[][] apdus) { if (apdus == null || apdus.Length == 0) return null; List

问题 This is my code that works. I wouldn't have to do this if it weren't task based async, but using Monitor.Enter/Exit results in this problem Object synchronization method was called from an unsynchronized block of code. Exception on Mutex.Release() People have mentioned using AutoResetEvent, and SemaphoreSlim, but I'm not quite sure which pattern fits. private bool fakelock; internal async Task<byte[][]> ExchangeCore(byte[][] apdus) { if (apdus == null || apdus.Length == 0) return null; List