Recent Articles

Open Source

Powerful image loading and caching system

All Articles

• Client-Side Search

  Apr 9, 2021

  How to build client-side search with lunr.js

• Nuke Docs

  Apr 8, 2021

  How to build great documentation for a framework

• The SwiftUI Experiment

  Mar 30, 2021

  Wrapping up the series on Pulse development

• Time to Log

  Mar 29, 2021

  Designing and implementing Pulse for watchOS

• Concurrency Done Right

  Mar 24, 2021

  The actor model and other concurrency patterns used in Nuke

• What's a Document

  Mar 15, 2021

  A quick write-up on selecting a document format for Pulse

• ...But Not NSTableView

  Mar 1, 2021

  Integrating NSTableView with SwiftUI

• AppKit is Done

  Feb 24, 2021

  Learn how to build delightful macOS apps using only SwiftUI

• RxUI

  Feb 16, 2021

  Applying SwiftUI ideas to improve the developer experience of using RxSwift

• Apple Documentation

  Feb 15, 2021

  Everything that is wrong with Apple's documentation

• Triple Trouble

  Feb 14, 2021

  Implementing triple-column navigation in SwiftUI using NavigationView

• XCFrameworks

  Feb 13, 2021

  Caveats of using XCFrameworks with Swift Package Manager

• Pulse: Network Inspector

  Jan 31, 2021

  Building a multiplatform tool using SwiftUI

• Formatted Strings

  Nov 29, 2020

  Using XMLParser and NSAttributedString to add support for basic formatting in localizable strings

• WWDC20 Summary

  Jul 13, 2020

  An overview of the changes introduced on WWDC20 from the design and product perspective

• Introducing Align 2

  Jun 18, 2020

  Layout anchors, reimagined

• VPN, Part 2: Packet Tunnel Provider

  Jun 14, 2020

  Using NEPacketTunnelProvider to implement a VPN client

• VPN, Part 1: VPN Profiles

  May 24, 2020

  Using Network Extension framework to create and manage VPN profiles

• How Does VPN Work?

  May 19, 2020

  A Russian nesting doll of network protocols

• Let's Build a VPN Protocol

  May 18, 2020

  How to implement a custom VPN client and server using Packet Tunner Provider

• Nuke 9

  May 17, 2020

  Reflecting on the five years of the performance improvements

• Introducing FetchImage

  Mar 18, 2020

  FetchImage makes it easy to download images using Nuke and display them in SwiftUI apps

• SwiftUI Data Flow

  Jan 16, 2020

  Everything you need to know about data flow in SwiftUI

• Effective Unit Testing

  Dec 4, 2019

  Why most unit testing is a waste in Swift and how to extract the most value from tests

• CI for Swift Frameworks

  Nov 13, 2019

  How I went from manually testing my frameworks to having hundreds of unit tests and multiple automatic checks running on every change

• SwiftUI Layout System

  Oct 22, 2019

  Taking a deep dive into SwiftUI layout system

• Regex, Part 3: Matcher

  Sep 25, 2019

  Explore two different regex matching algorithms

• Regex, Part 2: Compiler

  Sep 22, 2019

  What are Type-2 (or regular) languages? How can Finite State Automation be used to recognize them? Where do regex fit into all this?

• Regex, Part 1: Parser

  Sep 15, 2019

  Exploring Parser Combinators (or monadic parsers) which are a great example of functional programming used to bring practical benefits

• Regex, Prologue: Grammar

  Sep 9, 2019

  Using a formal grammar to describe a regular expression language

• Let's Build a Regex Engine

  Aug 20, 2019

  How to understand the language of <\/?[\w\s]*>|<.+[\W]>

• Navigation Problem

  Mar 24, 2019

  How to solve it without Coordinators and why Coordinators might be not an optimal solution for you

• Future<Value, Error>

  Nov 12, 2018

  Future – a streamlined Future<Value, Error> implementation with functional interface

• Let's Talk Architecture

  Aug 11, 2018

  MVC – The Past. MVVM with RxSwift or ReactiveCocoa, MVP – The Present. Functional Architectures – The Future.

• Are Optionals Any Good?

  Jun 14, 2018

  Taking a step back to see what is good and bad about Optional type in Swift

• Resumable Downloads

  Jun 6, 2018

  Exploring how resumable downloads - one of my favorite new features in Nuke 7 - are implemented using HTTP range requests

• Network Extension, Part 1 - Introduction

  May 22, 2018

  Introduction to a series of posts about the Network Extension framework

• Trunk-Based Development

  Mar 23, 2018

  Why feature branches might prevent continuous integration and discourage refactoring and what other branching strategies are worth considering.

• Creating Views in Code

  Jan 12, 2018

  Tips and tricks to keep code in your views nice and readable

• Cancellation Token

  Dec 15, 2017

  A unified model for cooperative cancellation of asynchronous operations

• Naive Date and Time

  Dec 1, 2017

  Foundation offers great APIs for manipulating dates with time zones, however, it might be missing a few things

• Three Use Cases of Phantom Types

  Nov 24, 2017

  Adding additional type safety using phantom types on the examples

• Align: Intuitive Auto Layout

  Nov 17, 2017

  I'm thrilled to introduce a new intuitive and powerful Auto Layout library - Align

• Codable: Tips and Tricks

  Nov 10, 2017

  Introduced in Swift 4 to replace NSCoding APIs, Codable also features first-class JSON support

• Smart Retry

  Sep 3, 2017

  Combining retryWhen operator with Reachability and delay options inspired by RxSwiftExt to implement auto-retries

• API Client in Swift

  Jul 10, 2017

  How to implement a declarative and powerful API client using Alamofire, RxSwift, and Codable

• Introducing RxNuke

  Jun 11, 2017

  I'm excited to introduce a new addition to Nuke - RxNuke which brings the power of RxSwift to your image loading pipelines

• RxSwift Testing

  Jun 6, 2017

  Unit testing paging in a scroll view using RxSwift testing infrastructure - RxTest

• Interface Builder: Previews

  May 1, 2017

  Using Interface Builder to quickly preview features on different screen sizes and in different orientations

• Let's Build UIStackView

  Jan 16, 2017

  Explores how UIStackView works under the hood to build its open source replacement - Arranged

• Core Data Progressive Migrations

  Jun 18, 2016

  Using NSPersistentStoreCoordinato and NSMigrationManager for progressive schema migrations in Core Data

• Image Caching

  Jan 26, 2016

  In-depth look at HTTP cache and Foundation's URL Loading System to cache images on disk

• Image Prefetching

  Jan 12, 2016

  An effective way to improve user experience by loading data ahead of time in anticipation of its use

• Immutability and Builder Pattern

  Jan 10, 2016

  Modelling large immutable objects in Objective-C without creating telescoping initializers