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Notes and deep dives on .NET, C#, software engineering and AI.
Repository Pattern for .NET Repository Pattern για .NET
Interfaces, dependency injection and testing, with ASP.NET Core code.
Read articleUnderstanding Dependency Injection in C# .NET Κατανοώντας το Dependency Injection σε C# .NET
A beginner-friendly guide to DI, with a real payment provider example and unit tests.
Read articlePolymorphism in C#: virtual and override vs new Πολυμορφισμός σε C#: virtual και override έναντι new
Why method hiding with new is not polymorphism, with a runnable Animal and Dog example.
Read articleDelegates in C#: a Notify function as a parameter Delegates σε C#: μια συνάρτηση Notify ως παράμετρος
Swap a Notify function from SMS to email without touching the class that calls it.
Read articleValue Types vs Reference Types in C# Value Types έναντι Reference Types σε C#
Struct vs class, stack vs heap and the exact rule for when ref actually matters.
Read articleType Conversion in C#: Ways, Traps and Correct Patterns Μετατροπή Τύπων σε C#: Τρόποι, Παγίδες και Σωστά Πρότυπα
Casts, Parse, TryParse, Convert and as vs is, with an example that throws every exception on purpose.
Read articleThe 4 Pillars of OOP in C# Οι 4 Πυλώνες του OOP σε C#
Encapsulation, abstraction, inheritance and polymorphism, one running example at a time.
Read articleInterface vs Abstract Class in C# Interface έναντι Abstract Class σε C#
Why both matter for abstraction, how they differ and how each one works with DI.
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