Home » Foreach, IEnumerable and IEnumerator in C#Programming Today, we’re taking a deeper look at foreach loop in C#. What does a collection need to be able to use it in a foreach loop? Does it have to implement IEnumerable interface? These questions are often asked during interviews, so it’s worth knowing the answers 😃 We will go through a step-by-step example in building our own custom collection to see how all that works. Let’s dive in! 😎 Throughout this article, I’m working with a Unit Tests pro...

Today I’d like to share with you a very interesting concept in software testing – Assert Object pattern. It makes the Assert part of a test much simpler and more readable. Let’s dive right into it 😉The Asserts Hell Let’s consider the following unit test: What’s wrong here? Given and When sections are great single-liners. We know straightaway what’s the input and the action executed. However, Then block is too complex. It’s hard to figure out, just passing quickly through this test, what is expected. T...

Continuing to examine new C# 8 features, today we are taking a look at the most controversial one. It’s a possibility to provide default interface methods implementation. Come and read to know more :)

If you're interested in C# 8.0 new features, come and read about nullable reference types :) We'll continue exploring next interesting features of C#8 in the weeks to come.

This page collects all the posts I’ve written within .NET Internals series so far

Wanna know how .NET applications are executed by the CLR? Come and read the 10th post in the .NET Internals series! :)

Wanna know a bit more about LOH? Let's examine it in today's post about a bit forgotten Large Object Heap :)

Let's see what is 'card table' data structure and how is it used generational garbage collection Written by Dawid Sibińskion Continuing .NET Internals series on the blog, today we’re going to see what is generational garbage collection. You’ll also get to know what is a card table data structure and for what it’s used 🙂 As we know from this post, heaps used by .NET process to allocate reference objects are allocated on different kinds of heaps. In the previous article we also got to know that...

New post in .NET Internals series - this time about Garbage Collection and memory allocation in .NET. Let's start GC topics! :)

2nd post form my ".NET Internals" series. Today you'll see how stack and heap data structures are organized and used. You'll also get to know where value and reference types are stored in memory. Come and enjoy! :)