Swift blog posts, tutorials, tips, and tricks

EXC_BAD_ACCESS crash error: Understanding and solving it

Building apps all goes well in the beginning. You're developing an app from scratch, it's stable, and runs perfectly fine ...
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Jan 07, 2020 • 4 min read Swift

SwiftLee 2019 in review: Top Swift Development blog posts

You know it's been a great year if you have the feeling that it went really fast. After looking back ...
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Dec 31, 2019 • 5 min read Swift

Advanced asynchronous operations by making use of generics

Asynchronous operations allow you to write long-running tasks in a distinct matter while being able to add dependencies between several ...
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Dec 10, 2019 • 6 min read Swift

Asynchronous operations for writing concurrent solutions in Swift

Asynchronous operations allow executing long-running tasks without having to block the calling thread until the execution completes. It's a great ...
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Dec 03, 2019 • 5 min read Swift

Getting started with Operations and OperationQueues in Swift

Operations in Swift are a powerful way to separate responsibilities over several classes while keeping track of progress and dependencies ...
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Nov 26, 2019 • 3 min read Swift

Thread Sanitizer explained: Data Races in Swift

The Thread Sanitizer, also known as TSan, is an LLVM based tool to audit threading issues in your Swift and ...
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Nov 19, 2019 • 4 min read Swift Xcode

Concurrent vs Serial DispatchQueue: Concurrency in Swift explained

Concurrent and Serial queues help us to manage how we execute tasks and help to make our applications run faster, ...
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Nov 12, 2019 • 5 min read Swift

Dark Mode: Adding support to your app in Swift

Dark Mode was introduced in iOS 13 and announced at WWDC 2019. It adds a darker theme to iOS and ...
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Nov 05, 2019 • 7 min read Swift Xcode

Core Data and App extensions: Sharing a single database

Core Data got better and better over the years with improved APIs that make it easier to work with. The ...
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Oct 29, 2019 • 5 min read Swift

Auto Layout in Swift: Writing constraints programmatically

Auto Layout constraints allow us to create views that dynamically adjust to different size classes and positions. The constraints will ...
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Oct 22, 2019 • 6 min read Swift

Optionals in Swift explained: 5 things you should know

Optionals are in the core of Swift and exist since the first version of Swift. An optional value allows us ...
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Oct 15, 2019 • 5 min read Swift

Rich notifications on iOS explained in Swift

Rich notifications on iOS allow us to make the boring default notification just a little nicer by adding images, GIFs, ...
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Sep 17, 2019 • 7 min read Swift