Sergii’s Tech Adventures

Hi there, C# lovers! 😍 Today I want to talk to you about one of my favorite design patterns: the Template Method pattern. 🎨 The Template Method pattern is a behavioral pattern that defines the skeleton of an algorithm in a base class but lets subclasses override some steps of the algorithm without changing its structure. 🦴 This way, you can reuse the common logic in the base class, and customize the specific behavior in the subclasses. 🙌 Sounds abstract? Don’t worry, I’ll show you a concrete example in C#. 😉 Let’s say you have an online store that processes orders using different payment methods: credit card, PayPal, or cash on delivery. 💳 💸 💰 You want to have a consistent way of processing orders, but each payment method may have some variations. For example, credit card orders need to validate the card number and charge the amount, PayPal orders need to redirect to the PayPal website and confirm the payment, and cash-on-delivery orders need to print a receipt and collect the ...

  Hello, fellow C# lovers! 😊 Today I want to share with you one of the most useful and versatile design patterns: the Strategy pattern. 🚀 The Strategy pattern is a behavioral pattern that allows you to define a family of algorithms, encapsulate each one, and make them interchangeable. This way, you can select an algorithm at runtime without changing the code that uses it. 🙌 Sounds awesome, right? But how does it work in practice? Let me show you an example in C#. 👇 Suppose you have a class called  Order  that represents an online purchase. You want to be able to process this order with different payment methods, such as credit card, PayPal, or Bitcoin. 💳 One way to do this is to use a switch statement inside the  ProcessPayment  method of the  Order  class. Something like this: public class Order { public decimal Amount { get ; set ; } public void ProcessPayment ( string paymentMethod ) { switch (paymentMethod) ...

  Hello C# lovers! 😊 In this article, I will explain what the observer pattern is and how to use it in C#. I will also show you some examples of how to implement the observer pattern using events and interfaces. 🚀 The observer pattern is a behavioral design pattern that allows an object (called the subject or the provider) to notify other objects (called the observers or the subscribers) about changes in its state. The observers can then react to these changes in a suitable way. 😍 The observer pattern is useful for scenarios where you need to implement a push-based notification system, where the provider pushes updates to the observers whenever something interesting happens. For example, you can use the observer pattern to: Update a user interface when the data source changes. Send alerts when a sensor detects some event. Monitor the price of a cryptocurrency and execute trades. The observer pattern has many benefits, such as: It supports loose coupling between the provider and ...