Previously I talked about how to set up the server side of SignalR for facilitating real-time communication. One of the parts that I don’t particularly care for in that default implementation is that the hub methods (the messages that are sent to connected clients) are identified by strings. Sure, you could create some string constants … [Read more…]
This one’s kind of specific, but sometimes when you’re writing a console app that does a lot of asynchronous stuff, and you want to cancel it at any time by pressing escape. via GIPHY However, Console.ReadKey is blocking… so that’s not super great. CancellationToken First, make use of the cancellation tokens. I’ve talked about them … [Read more…]
I like the idea of modal dialogs for certain things, especially showing error messages or confirming an action. Creating (and styling) modal dialogs can vary so much that Angular doesn’t include them out of the box. There’s a bunch of libraries out there that give you this functionality, including ones that are tied to a … [Read more…]
There’s several tutorials for how to use and test HttpClient, but I wanted to distill it down to a simple snippet that I can refer back to when I inevitably forget how to do it. via GIPHY HttpTestingController This handy thing is provided by importing the HttpClientTestingModule in to your TestBed. It lets you manipulate … [Read more…]
A TcpListener opens a socket using TCP to listen for incoming connection requests. You can use AcceptTcpClientAsync to asynchronously get a TcpClient object, which you can then use to send and receive messages on the connection. AcceptTcpClientAsync Waits forever to get a connection. This is pretty much what you want most of the time… after … [Read more…]
In C# asynchronous programming, a CancellationToken allows you to stop a Task. This is especially useful if you have many Tasks running and want to gracefully shut down the program, or if you want to add a timeout to a Task. via GIPHY Creation CancellationTokens are created from a CancellationTokenSource. via GIPHY Usage The token … [Read more…]
Recently I had an Angular component that needed to be manually sized based on the window’s size. Admittedly, this is pretty annoying, but the user experience was so much better than anything I could come up with using straight CSS. It worked fine to get the dimensions of the window and calculate the width and … [Read more…]
Sometimes when you’re writing Javascript unit tests you have to give Javascript a chance to catch up before checking your assertions. Javascript uses a single event loop, so it isn’t multi-threaded in the same way as other languages. You can still get a “multi-threaded feel” by using callbacks (promises, observables, etc), but at the end … [Read more…]
Recently I wrote some code that contained a setTimeout. The reason was so that the UI could catch up before the function actually fired – something that I’ve found the need to do with javascript from time to time. So, when it comes to testing the code… my test just skipped along until it literally … [Read more…]
Recently I’ve been working on adding SignalR to a web application, and that means broadcasting records to clients after they’ve been updated. I could make different methods for each update type and react accordingly, but I’m pretty lazy so I decided to just make one “update” method that receives the entire record (and replaces it … [Read more…]