Are interfaces like contracts?

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

Design your own language in C# 9: a tutorial series

Programming languages are some of our fundamental tools, and many different languages for many different purposes. In this tutorial series, you will learn how to design and implement your own language, starting out from simple expressions and their evaluation, later adding variables, functions and lambda expressions. You may ask yourself why… why would you create … Read more

Convenient member data sources with xUnit

In xUnit test cases can be parameterized using the attribute [InlineData] much like [Datarow] in MsTest. That is, instead of stating a [Fact], you can create a [Theory] and parameterize it, much like this example: Here we created four testcases using a general parameterized theory. This allows you to rapidly gain coverage without the boilerplate … Read more

Mapping deserialized objects to their JSON source using Json.NET

I am rewriting a part of an application written in python. It queries a json api, extracts relevant information and stores this information in an SQL database. It has served me well for a number of years now, and have changed quite a lot during its lifetime, and so has the relevant information. The data … Read more