If you write Swift for more than a week, you bump into closures. They’re everywhere: in UIKit callbacks, SwiftUI views, async networking, and collection transformations. But the real learning happens when you see **examples of practical examples of using closures in Swift** that mirror what you actually do in production code. In this guide, we’ll walk through real examples that show closures doing actual work: sorting data, handling completion callbacks, capturing state, avoiding retain cycles, and powering async/await bridges. Instead of toy snippets, you’ll see how a closure shows up in networking, animations, SwiftUI views, and background tasks. Along the way, I’ll call out common pitfalls (like capture lists and memory leaks) and how modern Swift (up through Swift 5.10 in 2024) encourages closure-heavy APIs. If you’ve ever stared at a closure signature and thought, “Okay, but how would I use this in a real app?”, this article is for you.
If you’re learning Combine, staring at the operators list in Xcode is a fast way to get overwhelmed. What actually helps is seeing real, practical examples of using Combine framework in Swift: networking, form validation, UI bindings, and error handling that you’d ship in a production app. This guide focuses on those real examples, not toy snippets. We’ll walk through several example of Combine in action: chaining URLSession calls, debouncing search input, validating login forms, reacting to notifications, integrating with async/await, and more. The goal is simple: after reading, you should be able to look at your existing UIKit or SwiftUI code and say, “I know exactly where Combine would clean this up.” Along the way, I’ll call out 2024-era realities: Combine coexisting with async/await, where it still shines, and patterns that age well. If you want the best examples that actually match how modern iOS apps are written, you’re in the right place.
If you’re learning iOS development, building a calculator is one of the friendliest ways to get your hands dirty with Swift. In this guide, we’ll walk through several practical examples of simple calculator app examples in Swift, ranging from a bare‑bones command‑line tool to a more polished UIKit or SwiftUI interface. Instead of just dumping code, we’ll talk through how and why each example works, so you can adapt the patterns to your own apps. You’ll see an example of a basic four‑function calculator, a tip calculator, a unit converter, and more. These real examples will help you practice layout, state management, and user input handling in a way that actually feels useful, not academic. By the end, you’ll have multiple Swift code snippets you can copy, tweak, and expand, along with a clearer mental model of how simple calculator logic fits into modern iOS development in 2024 and beyond.
If you’re trying to write modern, readable concurrency code in Swift, you need good, practical examples of Swift async/await examples for asynchronous programming, not another dry overview of theory. Swift’s async/await model, introduced in Swift 5.5 and evolving through Swift 5.10 and beyond, radically cleans up callback-heavy code while staying type-safe and predictable. In this guide, we’ll walk through real examples of how async/await fits into everyday iOS and server-side Swift work: networking, image loading, structured concurrency with task groups, cancellation, error handling, and interoperability with older completion-handler APIs. These examples include small, focused snippets you can paste into a project today, along with commentary on why the patterns work well in 2024 and 2025-era Swift. If you’ve ever stared at nested closures wondering where your logic went wrong, these examples of Swift async/await examples for asynchronous programming will show you how to flatten that mess into readable, testable functions that behave the way you expect.
If you’re building anything non-trivial in iOS or macOS, you will eventually need reliable timers. And that’s where Grand Central Dispatch (GCD) shines. In this guide, we’ll walk through practical, real-world examples of timer examples with Grand Central Dispatch in Swift, from simple repeating timers to more advanced patterns like debouncing and background-safe scheduling. Instead of just showing one basic example of a repeating timer and calling it a day, we’ll look at how production apps actually use GCD timers: updating UI at intervals, rate-limiting network calls, scheduling analytics pings, and more. These examples include both main-queue timers for UI work and background-queue timers for heavy lifting. If you’ve ever wrestled with `Timer.scheduledTimer` and run into retain cycles, missed fires, or odd behavior when the app goes to the background, you’ll see why GCD timers are often the better choice. By the end, you’ll have a solid toolkit of the best examples and patterns you can reuse across your Swift projects.
If you build iOS apps, you live with tables. Messages, email, settings screens, search results — they all lean on UITableView or its SwiftUI cousins. That’s why strong, real-world examples of UITableView implementation in Swift are worth studying instead of copy‑pasting the same tired boilerplate. In this guide, we’ll walk through several practical examples of UITableView implementation examples in Swift, from the classic static list to diffable data sources and async data loading. Rather than theory, we’ll focus on how you would actually wire these patterns into a 2024‑era iOS project: modern Swift, iOS 15+ APIs, diffable data, and clean architecture. These examples include simple prototypes you can drop into a playground as well as production‑ready patterns you’d use in a real app. Along the way, we’ll highlight best practices, common mistakes, and where UITableView still makes sense even as SwiftUI and UICollectionView keep getting more attention.
If you’re building real apps, you don’t want toy code—you want real examples of error handling in Swift that match what you hit in production. That’s where this guide comes in. We’ll walk through **examples of error handling in Swift: 3 practical examples** that mirror common problems: parsing bad JSON, failing network calls, and validating user input. Along the way, we’ll layer in more scenarios so you see how the same patterns scale. Instead of abstract theory, you’ll see concrete code that compiles in Swift 5.9+ and works with async/await. These examples of error handling in Swift include throwing functions, `do–try–catch`, custom error enums, and the newer `Result` and `AsyncThrowingStream` patterns. By the end, you’ll know how to design error types, decide when to throw versus return optionals, and how to surface meaningful messages to users without turning your codebase into a tangle of `if let` and `guard` statements.
If you’re writing Swift in 2024 and still treating enums as glorified integers, you’re leaving a lot of power on the table. The most useful way to understand them is to look at real examples of Swift enums with associated values: practical examples that mirror what you’d actually ship in a production app. Instead of abstract theory, we’ll walk through concrete patterns you can lift straight into your codebase. Swift enums with associated values let you model state, errors, and data in a way that’s both type-safe and expressive. They shine in networking, UI state, feature flags, analytics, and more. In this guide, we’ll walk through several of the best examples, from API responses and navigation flows to payment methods and authentication states. You’ll see how enums with associated values compare to optionals and structs, how they’ve evolved with modern Swift, and why they often lead to cleaner, more maintainable code than sprawling class hierarchies or loosely typed dictionaries.