A Look at TypeScript 5.2's New Keyword: using — using brings something akin to Python’s with context management into TypeScript with a way to automatically run a function when an object leaves scope. You could use it to shut down a database connection, close file handles, etc.
Here’s a summary of what’s new in this preview release:
TryParse in MVC and API controllersResults.Stream() overloadsServerReady event for measuring startup time
using var connection = _rabbitMqService.CreateChannel();
using var model = connection.CreateModel();
IBasicProperties props = model.CreateBasicProperties();
props.DeliveryMode = 2;
var body = Encoding.UTF8.GetBytes("Hi");
model.BasicPublish("UserExchange",
string.Empty,
basicProperties: props,
body: body); An unhandled exception has occurred while executing the request. MailKit.Security.SslHandshakeException: An error occurred while attempting to establish an SSL or TLS connection. The host name did not match the name given in the server's SSL certificate.
IDX20804: Unable to retrieve document from: 'https://localhost/.well-known/openid-configuration'. ---> System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception. ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure.
IoCWrapper.RunAndDispose(() =>
{
var draftsService = IoCWrapper.GetInstance<IBlogPostDraftsService>();
draftsService.RunConvertDraftsToPostsJob();
}); IoCWrapper.RunAndDispose(async () =>
{
var draftsService = IoCWrapper.GetInstance<IBlogPostDraftsService>();
await draftsService.RunConvertDraftsToPostsJobAsync();
}); System.ObjectDisposedException HResult=0x80131622 Message=The ObjectContext instance has been disposed and can no longer be used for operations that require a connection. Source=EntityFramework
npm install @aspnet/signalr --save
var connection = new signalR.HubConnectionBuilder().withUrl('/message').build(); 
IF db_id(N'test') IS NOT NULL
SELECT 0;
ELSE
SELECT Count(*)
FROM sys.databases
WHERE [name] = N'test' 
var userInRoles = user.UserInRoles.Union(user.UsersSurrogate.Where(a => a.SurrogateFromDate != null && a.SurrogateToDate != null && a.SurrogateFromDate <= DateTime.Now && a.SurrogateToDate >= DateTime.Now).SelectMany(a => a.UserInRoles));
result = userInRoles.Any(a => a.Role.FormRoles.Any(b => b.IsActive && (b.Select && b.Form.SelectPath != null && b.Form.SelectPath.ToLower().Split(',').Contains(roleName)))); 