How often do you see an email represented as a string? Or a currency field being a decimal type? Did you ever consider that something is wrong with this approach? That's the usual manifestation of primitive obsession. It occurs when you use primitive...
I've seen many ways to deal with date and time. Hiding it behind an interface, a static class with a single property, ambient context, you name it. I never liked any of them. Then the enlightenment came. In one of the projects, I've seen a function u...
How do you start a new project? From my experience, most of the projects begin with a search for a verb. Not any verbs. The important ones! The question arises, how do you spot the important one? That depends on the domain, of course. As an example,...
I was full of doubt about local functions at first. They break some dogmas for me. For example, return from the method isn't the last statement anymore. Then I started to use them. Now I can say that this idea makes code more readable and keep classe...
Working with collections of custom types in xUnit always felt clumsy. To pass such a set of data, you had either create a property or a whole class. No matter which options you choose, it's a lot of boilerplate. What a pleasant surprise was how less ...
Many functional techniques are proving their ground in C# codebases. One of my favorites is the Result type. The most basic form consists of a boolean flag indicating success and an array of errors. But in many cases, tuples are just enough. I fall ...