Sergii’s Tech Adventures

Angular 16 is the latest version of the popular web framework that brings many new features and improvements. One of the most exciting additions is the introduction of Signals, a new way to manage state and reactivity in Angular applications.  😍 What are Signals? Signals are a new concept in Angular 16 that allows you to create and manipulate reactive values without using observables or subscriptions. Signals are inspired by Svelte , a framework that uses reactive assignments to update the UI automatically.  😎 A Signal is a function that returns a value and can be updated by calling it with a new value as an argument. For example, this is how you can create a Signal that holds a counter value: import { signal } from '@angular/core' ; // create a Signal with initial value 0 let counter : Signal < number > = signal < number >( 0 ); // get the current value of the Signal, prints 0 console . log ( counter ()); // update the value of the Signal to 1 counter ( 1 );...

  Hello, C# lovers! 😍 Today, I want to talk about one of the most useful and versatile design patterns in C#: the Adapter pattern. 🙌 The Adapter pattern is a structural pattern that allows two incompatible interfaces to work together by providing a common interface between them. 🤝 This pattern is very helpful when you want to reuse some existing classes or libraries that have different interfaces than what your project expects. For example, you may want to use a third-party library that provides some functionality that you need, but its interface is different from the one you have defined in your project. Or, you may want to use some legacy code that has a different interface than the new code you are writing. 😊 The Adapter pattern solves this problem by introducing an additional class called the Adapter, which implements the expected interface and delegates the calls to the existing class. This way, you can use the existing class without changing its interface or modifying you...

Hello, fellow C# developers! In this post, I’m going to introduce you to one of the most useful and elegant design patterns: the   Facade pattern . If you have ever worked with a complex system that has multiple subsystems, libraries, or frameworks, you know how hard it can be to understand and use them. Sometimes, you just need a simple and unified interface that hides the complexity and provides only the functionality that you need. That’s where the Facade pattern comes in handy. 😎 What is the Facade pattern? 🤔 According to the  Gang of Four  definition, the Facade pattern is a structural design pattern that provides a simplified interface to a set of interfaces in a subsystem. It defines a higher-level interface that makes the subsystem easier to use. The Facade pattern involves a single wrapper class that contains a set of members required by the client. These members access the system on behalf of the facade client and hide the implementation details. The Facade pa...

Hello, fellow C# developers! In this post, I’m going to introduce you to one of the most useful and widely used design patterns: the  Abstract Factory Pattern . This pattern is also known as the  Factory of Factories  because it allows you to create families of related or dependent objects without specifying their concrete classes. Sounds cool, right? 😎 What is the Abstract Factory Pattern? The Abstract Factory Pattern is a creational design pattern that provides an interface for creating groups of related or dependent objects. For example, suppose you want to create a currency and a country, but you don’t know in advance whether they will be European or Asian. You can use an abstract factory to create a currency and a country that belong to the same family (European or Asian) without knowing their concrete types. The Abstract Factory Pattern consists of four main components: Abstract Factory : An interface that declares methods for creating abstract products. Concrete F...