SwiftRocks - NSReverseEngineering

Hi! My name is Bruno Rocha, and I'm a software engineer at Spotify and developer of Burnout Buddy. I mostly write articles about advanced iOS / Swift topics, but I also occasionally write about general software engineering and my opinions on the industry.

Faster iOS performance debugging with ETTrace
Published on 11 Sep 2023

Performance Trace Profiles in iOS: Debugging performance issues you can't reproduce
Published on 01 Jun 2023

Thoughts on SwiftUI vs UIKit
Published on 20 Oct 2022

What's the "any" keyword? Understanding Type Erasure in Swift
Published on 12 Sep 2022

Architecting iOS apps for fast build times
Published on 31 Aug 2022

Are your frameworks bulletproof?
Published on 18 Jul 2022

Mobile Platform Teams
Published on 15 Jul 2022

Using a Macbook Pro as a gaming console
Published on 08 Jul 2022

How necessary are the programming fundamentals?
Theory
Reworked on 16 Jun 2022

Sentiment Analysis with NSTagger: Ranking popular subreddits by the negativity/hostility of its comments
iOS
Swift
Published on 12 Jun 2022

Managing Provisioning Profiles as your team grows
iOS
External Partnership (Runway)
Published on 26 May 2022

Understanding Certificates and iOS Provisioning Profiles
iOS
Published on 24 May 2022

How — and why — to think about mobile app versioning
Theory
External Partnership (Runway)
Published on 28 Apr 2022

Avoiding release anxiety, part II
Theory
External Partnership (Runway)
Published on 14 Mar 2022

Avoiding release anxiety, part I
Theory
External Partnership (Runway)
Published on 08 Mar 2022

Merge queues: An intro for mobile engineers
Theory
External Partnership (Runway)
Published on 09 Feb 2022

How successful mobile teams release apps at scale
Theory
External Partnership (Runway)
Published on 25 Jan 2022

Focus on concepts, not approaches
Theory
Published on 06 Jan 2022

Detecting Broken Constraints in Swift
iOS
Swift
Published on 22 Nov 2021

How To Solve Any iOS Crash Ever
iOS
Published on 01 Nov 2021

Enabling Module Stability in Swift Package Manager Projects
Compiler
Swift
Published on 26 Oct 2021

Unit Testing Weak References / Retain Cycles in Swift
Swift
Published on 13 Oct 2021

Solving CPU Usage Crashes with Xcode's Energy Organizer
iOS
Published on 28 Sep 2021

How AsyncSequence works internally in Swift
Compiler
Swift
Published on 20 Sep 2021

Reverse engineering a 5 year old Xcode issue
Reverse Engineering
Published on 31 Aug 2021

Swift's Documentation Markup
Swift
Published on 17 Aug 2021

Adding Intelligent Code Generation to Swift Projects with SourceKit
iOS
Swift
Published on 10 Aug 2021

StaticString, and how it works internally in Swift
Compiler
Swift
Published on 03 Aug 2021

Extending / Creating Combine Publishers the Right Way
Swift
Published on 27 Jul 2021

Benchmarking Swift Code Properly with Attabench
Swift
Published on 20 Jul 2021

How Actors Work Internally in Swift
Compiler
Swift
Published on 06 Jul 2021

Creating 3D Models from Photographs with RealityKit in Swift
iOS
Published on 22 Jun 2021

Thread Safety in Swift
Swift
Published on 11 May 2021

Creating a licensing system for paid apps in Swift
Swift
iOS
Published on 06 Apr 2021

Be careful with Obj-C bridging in Swift
Swift
iOS
Published on 02 Mar 2021

Understanding @inlinable in Swift
Compiler
Swift
Published on 22 Dec 2020

DispatchSource: Detecting changes in files and folders in Swift
iOS
Published on 24 Nov 2020

How Swift API Availability Works Internally
Compiler
Swift
Published on 29 Sep 2020

UI Testing Deeplinks and Universal Links in iOS
iOS
Published on 15 Sep 2020

Improving Observer Pattern APIs in Swift With Weak Collections
Swift
Published on 25 Aug 2020

App Attest: How to prevent an iOS app's APIs from being abused
iOS
Published on 11 Aug 2020

Entry Points in Swift: How @main and @UIApplicationMain work internally
Compiler
Swift
Published on 21 Jul 2020

Adapting Objective-C APIs to Swift with NS_REFINED_FOR_SWIFT
iOS
Swift
Published on 14 Jul 2020

Creating Debug Menus in Swift with UIContextMenuInteraction
iOS
Published on 30 Jun 2020

How to create Widgets in iOS 14 in Swift
iOS
Published on 23 June 2020

Benefits of using throwing functions (try) - Swift's most underrated feature?
Swift
Published on 16 June 2020

How Random Numbers Work In Swift
Compiler
Swift
Published on 12 May 2020

Unit Testing Preprocessor Macros in Swift
Swift
Published on 05 May 2020

Weak Dictionary Values in Swift
Swift
Published on 14 Apr 2020

Understanding Swift's ObjectIdentifier
Compiler
Swift
Published on 31 Mar 2020

Useful Global Swift Functions
Swift
Published on 24 Mar 2020

How Collection Diffing works in Swift
Compiler
Swift
Published on 18 Mar 2020

Swift Codable: Decoding / Encoding With Context
Swift
Published on 05 Feb 2020

Reducing iOS Build Times by using Interface Modules
Theory
Swift
Published on 23 Jan 2020

How Hashable works in Swift
Compiler
Swift
Published on 13 Jan 2020

Using Type Erasure to Build a Dependency Injecting Routing Framework in Swift
Theory
Swift
Published on 02 Jan 2020

Faster Array Operations With CollectionOfOne in Swift
Compiler
Swift
Published on 23 Dec 2019

How OptionSet works inside the Swift Compiler
Compiler
Swift
Published on 03 Dec 2019

NSCopying uses in Swift
iOS
Swift
Published on 05 Nov 2019

Swift's Sequence Inside The Compiler: How for loops work internally
Compiler
Swift
Published on 26 Oct 2019

Building a Face Detecting Robot with URLSessionWebSocketTask, CoreML, SwiftUI and an Arduino
Hardware
SwiftUI
Published on 16 Oct 2019

Using SIMD Vector Types in Swift
Swift
Published on 30 Sep 2019

Timsort and Introsort: Swift's Sorting Algorithms
Compiler
Swift
Published on 04 Sep 2019

Advanced lldb tricks for Swift - Injecting and changing code on the fly
iOS
Published on 08 Aug 2019

Swift ExpressibleBy protocols: What they are and how they work internally in the compiler
Compiler
Swift
Published on 17 Jul 2019

Useful (and obscure!) Foundation types in Swift
iOS
Published on 26 Jun 2019

Understanding Opaque Return Types in Swift
Compiler
Swift
Published on 10 June 2019

Inside SwiftUI's Declarative Syntax's Compiler Magic
Compiler
SwiftUI
Published on 04 Jun 2019

autoreleasepool uses in Swift
Swift
Published on 22 May 2019

Avoiding Release Anxiety 2: On the importance of creating a code Style Guide
Theory
Published on 07 May 2019

Avoiding Release Anxiety 1: Block-based UI Testing in Swift
Theory
iOS
Published on 20 Apr 2019

iOS Responder Chain: UIResponder, UIEvent, UIControl and uses
iOS
Published on 01 Mar 2019

Adding iOS Home Shortcuts to Specific Parts of An App in Swift
iOS
Published on 20 Feb 2019

Avoiding Callback Hell in Swift
Swift
Published on 17 Dec 2018

How @dynamicMemberLookup Works Internally in Swift (+ Creating Custom Swift Attributes)
Compiler
Swift
Published on 06 Dec 2018

How Never Works Internally in Swift
Compiler
Swift
Published on 14 Nov 2018

What's .self, .Type and .Protocol? Understanding Swift Metatypes
Swift
Published on 29 Oct 2018

Running Other Apps' Siri Shortcuts Through Deeplinks in Swift
iOS
Published on 18 Oct 2018

How CaseIterable Works Internally in Swift
Compiler
Swift
Published on 21 Sep 2018

Swift Associated Types With Default Values
Swift
Published on 16 Sep 2018

Lazy Sequences in Swift And How They Work
Compiler
Swift
Published on 27 Aug 2018

Writing Custom Pattern Matching in Swift
Swift
Published on 08 Aug 2018

Writing Cleaner View Code in Swift By Overriding loadView()
Theory
Swift
Published on 23 Jul 2018

The Forbidden @inline Attribute in Swift
Compiler
Swift
Published on 26 May 2018

Competitive Programming With Swift
Compiler
Published on 21 May 2018

Unowned Properties in Swift
Swift
Published on 02 May 2018

Memory Management and Performance of Value Types
Theory
Compiler
Swift
Published on 13 Apr 2018

Understanding DispatchQueues
Swift
Published on 14 Feb 2018

Detecting TouchID fingerprint/FaceID face changes
iOS
Published on 20 Jan 2018

iOS Security: Reverse Engineering Messenger's Chat Bubbles
Reverse Engineering
Published on 07 Nov 2016
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