Jak wiemy delegaty w języku C# zawierają referencje do metod o określonych wcześniej parametrach oraz typie jaki dana metoda zwraca.

Short description of the main guidelines for logging

Immutability is a quite old concept that is mostly related to the functional programming, however, it’s also (maybe not so widely) used in the object oriented programming. An immutable variable/object can not be mutated, which means that once it’s been initialized it will never change it’s original value/reference (unless it’s deallocated). This approach results in some great benefits such as out of the box thread safety, yet in the OOP world, it does seem to be quite often abused or even not used at al...

Jedną z największych trudności dla osoby zaczynającej przygodę z testami jednostkowymi są: Metody i klasy static. Niederministyczne lub/i niepowtarzalne zależności.

Nomenklatura w świecie TDD, a w szczególności ta dotycząca tworzenia atrap, jest źródłem wielu niejasności. Powodem takiego stanu jest fakt, że definicje różnią się w zależności od źródła, tj. książki,  lub frameworka. W poprzednich częściach poznaliśmy trzy najbardziej popularne frameworki do tworzenia atrap dla .NET, dla których...

Recently I’ve had this idea that came into my mind while working on the Sentry – let the users of my library (if there will be any) to configure not only the set of rules, connection strings, urls etc. but also the underlying providers that do all of the heavy lifting (e.g. the HttpClient responsible for communicating with the API). It means that as long as you’re not satisfied with the default solution, please feel free to provide your own engine that will for example talk to the database and perform a ...

Last year I had a pleasure to attend and speak at awesome Thunder Plains conference in Oklahoma City. I presented Aurelia Framework: video code slides I really liked this conference. Especially, because instead of having more talks that I could count, there was only 15 sessions (selected out of over 300) divided into 3 tracks. Moreover, all speakers were passionate developers, and you could feel this during their presentations.

Behavior-driven development (BDD) is a process of developing the software that has evolved from the TDD (test-driven development). We can think of a BDD such as the feature driven approach to the TDD. The main advantage of the BDD over the TDD is the way the tests are being written, in a form of the story that can be understood both by the developers and the customers. In short, we can simply state that the BDD is the TDD done right – it makes use of the so called ubiquitous language which is the core pa...

CQS stands for the command query separation. There’s a chance that you may have not heard about it, but on the other hand the CQRS might ring a bell. Even though these 2 patterns have very much in common, there is a significant difference (definitely a bigger one than the additional “R” character within the CQRS acronym) in how do they apply to the architecture of our system. In this post I’ll focus on the CQS – the older brother of the CQRS – that will help you understand how to design the software that...

Zwykle programiści korzystają z podstawowych typów dostarczonych przez C#, takich jak String, Int32 czy Double. W świecie programowania obiektowego można jednak pójść o krok dalej i budować własne typy danych. Przeważnie programiści korzystają z nich wyłącznie, gdy do zaimplementowania jest jakaś logika. Dlaczego nie tworzyć ich nawet w sytuacjach, gdy mają one przechowywać wyłącznie dane? Problem z podstawowymi typami takimi jak String Czy Int32 t...