In a previous post, I discussed static abstracts in interfaces, and while it is quite a nice feature, it falls short in some corner cases – particularly in implicit type-conversions. I’m not sure if it should, but… it’s complicated. As an example, I will consider the concept of interchangeable units. Wouldn’t it be neat, if … Read more
C#10 was just released, but included in this years release is an early preview of C#11, and it contains quite an exciting change: static abstract members in interfaces. You might think, what’s the fuzz? Static members in interfaces is nothing new and was introduced in C#8! In this post I present a few more fruitful, … Read more
In a previous post, we looked the newly introduced Assert.Multiple in the XUnit 2.4.2 assertion library. In this post, we will dive deeper into different ways of expressing tests and especially, test input. Facts are the simplest possible test-case in XUnit. They are self contained in that they contain the arrangement, act ,and assertion, but … Read more
How far could we get trying to implement our own delegate types? How are are delegates related the observer pattern? In this less serious but technically interesting post, we explore the relation between delegates and observers, look at how close we could and our ability to implement our own delegate type; or at least imitate … Read more
Multiple asserts in test-cases are considered bad practice. The usual reason for this, is that if one assert fails, you will never se the result of the rest. And probably true, having a single assertion, improves defect localization and simplifies the tests. But sometimes… sometimes you wish you could have multiple conditions; and that it would be ok.
If you have a stream of GZip compressed data, you can wrap the stream object in a deflating GZipStream. But how do you decide whether to wrap a stream in a deflating stream? And how do you identify encoding while also handing over the full untouched stream to the decoder?
I have tought Object Oriented Programming for a number of years and in my time completed more than a thousand oral exams at bachelor level computer science and software engineering students. Overall, it seems object oriented programming can be difficult to comprehend, but clearly the concept of interfaces is one of the harder topics. Interfaces … Read more
The authors of HTMX (https://htmx.org/)suggests using simple hyper text when applicable, which turns out to be… often. Featured on the latest <.NET Rocks!/> podcast — 1749 htmx with Carson Gross htmx allows you to access AJAX, CSS Transitions, WebSockets and Server Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext htmx is small (~10k min.gz’d), dependency-free, extendable & IE11 … Read more
I’m a ThinkPad user, and I have been for quite some years. One of my best arguments, is the TrackPoint, which I would argue, is missing on desktop computers. It has multiple modes such as scrolling etc. which, when used, switches the mouse cursor icon to show which mode is currently active. Though, an annoying … Read more
Did you ever want to report progress when reading or writing streams in C#? You could of course do reporting manually, when issuing a read or write. This would of course be cumbersome and error prone. But what if the stream you want to monitor is read from or written to by someone else, such … Read more