Blog by Jeevan

 SwiftUI’s AsyncImage is handy, but every time your view appears, it refetches the image—leading to flicker, delays, and unnecessary network use. What if you could fetch once, then reuse instantly? That's exactly what the Cached Async Image  delivers: a memory-powered caching layer that keeps SwiftUI image loading smooth, snappy, and resilient. First a simple in-memory cache without disk persistence. This will be thread-safe and auto-purges under memory pressure. A Singleton wrapping NSCache for URL → UIImage caching as follows : final class ImageCache {   static let shared = ImageCache()   private init() {}   private let cache = NSCache<NSURL, UIImage>()   func image(for url: URL) -> UIImage? {     cache.object(forKey: url as NSURL)   }   func insertImage(_ image: UIImage?, for url: URL) {     guard let image else { return }     cache.setObject(image, forKey: url as NSURL)   }   func clearAll() { ...

Atomic Design is a methodology for creating design systems with a clear, consistent hierarchy. It was introduced by Brad Frost and is inspired by chemistry. The core idea is to break down UI components into the smallest possible parts (atoms) and compose them to build more complex components and pages. Atomic Design Hierarchy 1. Atoms 
The basic building blocks of UI — buttons, labels, text fields, icons, colors, spacing units.
Example: PrimaryButton, AppText, Icon 2. Molecules 
 Groupings of atoms that form simple components.
Example: SearchBar = TextField + Icon, LabeledSwitch 3. Organisms 
 Relatively complex, standalone components made of atoms and molecules.
Example: LoginForm, UserCard, HeaderView 4. Templates 
 Layouts or skeletons that define the structure of pages using organisms.
Example: AuthScreenTemplate, DashboardTemplate 5. Pages 
 Final screens with real data/content, composed of templates.
Example: LoginScreen, SettingsScreen. Here is how an example folders structure l...

 Here's a quick reference list with some common abbreviations that I have came across frequently in my Engineering journey :  1. PR – Pull Request A request submitted by a developer to merge their code changes from one branch to another, typically for review and collaboration before integration. 2. MR – Merge Request Similar to a Pull Request, a Merge Request is used in GitLab to request code merging. It includes review, discussion, and approval before finalizing changes. 3. CR – Change Request A formal proposal to modify a system or product, often triggered by stakeholder feedback, bug reports, or evolving requirements. 4. LADR – Lightweight Architectural Decision Record A brief document that captures an important architectural decision made during a project. 5. BRD – Business Requirement Document Outlines the high-level business needs, objectives, and expectations of a project. It's used as a reference for aligning technical development with business goals. 6. LLD – Low...

Sorting is a fundamental operation in computer science and Understanding the basic sorting algorithms is essential for both interviews and real-world programming tasks. I am sharing the notes that I have taken in my learning curve. 1. Selection Sort Selection Sort repeatedly finds the minimum element from the unsorted part and puts it at the beginning. Steps: Loop through the array. For each index, find the smallest element in the rest of the array. Swap it with the current index. Time Complexity: O(n²) Example: [29, 10, 14, 37, 13] → [10, 29, 14, 37, 13] → [10, 13, 14, 37, 29] → [10, 13, 14, 37, 29] → [10, 13, 14, 29, 37] 2. Insertion Sort Insertion Sort builds the sorted array one element at a time by inserting each element into its correct position. Steps: Start from index 1. Compare current element with the left-side elements. Shift elements to the right and insert at the correct position. Time Complexity: O(n²) Example: [8, 4, 1, 3] → [4, 8, 1, 3] → [1, 4, 8, 3] → [1, 3, 4, 8] 3. ...

This summary covers key updates from WWDC 2025 sessions to build a SwiftUI app with the new design. 1.  Liquid Glass Liquid Glass is a new adaptive material inspired by glass and liquid, dynamically changing based on the content underneath. This SwiftUI’s new design system brings a fluid, glassy look across platforms, with tab bars, toolbars, and navigation views adopting Liquid Glass automatically. UI elements like sliders, toggles, and pickers animate fluidly with the new material, enhancing interactivity. 2. Background Extension Effect The NavigationSplitView now features a floating Liquid Glass sidebar and allows for safe-area background extension using backgroundExtensionEffect . 3. Tabbar Minimize Behavior A new tab bar behavior enables it to float above contents and minimize on scroll with tabBarMinimizeBehavior , keeping content in focus. Developers can add bottom accessory views to the tab bar using tabViewBottomAccessory , which adapts to collapse states. 4. Sheets b...

SwiftUI empowers developers with powerful APIs to design user interfaces, making it easier than ever to create visually stunning screens that enhance the user experience (UX). Once these screens are crafted, the next step is to seamlessly connect them using navigation tools like NavigationView or NavigationStack . But here’s the catch: navigation logic can quickly spiral into a tangled mess as your app scales with more features and screens. The challenge lies in writing a clean, maintainable routing layer that keeps your codebase organized and easy to extend. To tackle this, adopting a dedicated routing layer is essential, especially when working with structured app architectures like VIPER or MVVM. In VIPER, routing plays a pivotal role as the "R" in the acronym. In MVVM, however, routing often takes a backseat in SwiftUI projects. This article introduces a simple yet effective approach to integrate a routing layer within SwiftUI, ensuring your app’s navigation logic rem...

VisionOS gives futuristic opportunity in Education and Training landscape. For instance illustrating virtual classrooms, interactive learning environments, and simulations. 1. Immersive Learning Environments: VisionOS introduces immersive learning environments that go beyond traditional classroom setups. These environments leverage augmented reality (AR) and virtual reality (VR) technologies to create realistic and engaging educational experiences. Students can explore historical events or conduct virtual experiments, fostering a deeper understanding of the subject matter. 2. Redefining Traditional Education Models: The traditional education model often relies on lectures, textbooks, and static presentations. VisionOS disrupts this paradigm by offering dynamic and interactive content. Teachers can create 3D models, simulations, and interactive lessons, providing students with a more engaging and participatory learning experience. 3. Interactive and Engaging Platform: VisionOS is design...