https://khalid9assi.com/tags/design-patterns/Recent content in Design Patterns on Khalid9ASSIHugoenSun, 27 Jul 2025 14:30:00 +0100https://khalid9assi.com/posts/decorators-design-pattern/Sun, 27 Jul 2025 14:30:00 +0100https://khalid9assi.com/posts/decorators-design-pattern/<p>In software development, we often need to add extra behavior to existing functions without changing their original code. Common examples include logging, authentication, validation, caching, and performance tracking.</p> <p>A beginner solution is usually copying the same logic into multiple functions. While this works at first, it quickly creates repeated code, cluttered functions, and maintenance problems. This is where the <strong>Decorator Pattern</strong> becomes useful.</p> <h2 id="what-is-the-decorator-pattern" class="relative group">What is the Decorator Pattern? <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#what-is-the-decorator-pattern" aria-label="Anchor">#</a></span></h2><p>The <strong>Decorator Pattern</strong> is a structural design pattern that allows developers to dynamically add new behavior to existing objects or functions without modifying their original implementation.</p>