2024

December

• Weeknotes № 50

  Theatre

• Weeknotes № 49

  Short Videos

• Weeknotes № 48

  Hamburg

November

• Weeknotes № 47

  London

• Weeknotes № 46

  London

• Weeknotes № 45

  Workshop Prep

• Weeknotes № 44

  Pragma Conf

October

• Weeknotes № 42-43

  Traveling and Pragma Conf

• Weeknotes № 41

  Workshop Prep

• Weeknotes № 41

  Netherlands

September

• Weeknotes № 40

  Paris

• Weeknotes № 39

  Paris

• Phase Animator Behavior

  Unexpected Results

• Weeknotes № 38

  Presentations

June

• Weeknotes № 23-24

  California

May

• Weeknotes № 21

  Workshops

• Weeknotes № 18

  Workshops

April

• Weeknotes № 16

  Dynamic Type

• Weeknotes № 14-15

  LazyVStacks, Workshops and Bureaucracy and Dynamic Type

• Weeknotes № 12-13

  Shapes and Gradients

March

• Weeknotes № 10-11

  Workshops

• Weeknotes № 9

  Workshops

February

• Weeknotes № 8

  Field Guide

• Weeknotes № 5-7

  Launched

January

• Weeknotes № 4

  Animations and Alignment

• Weeknotes № 3

  Design

• Weeknotes № 2

  New Things

• Weeknotes № 1

  Week Off

• SwiftUI Binding Tips

  Leverage Dynamic Member Lookup

2023

December

• Weeknotes № 51-52

  Christmas and New Years

• Weeknotes № 49-50

  Tweakable and SwiftUI

• Weeknotes № 48

  Workshops and Next

November

• Weeknotes № 46-47

  London and Workshops

• Weeknotes № 44

  Workshops

• Weeknotes № 45

  Workshops

October

• Weeknotes № 43

  TypeScript

• Weeknotes № 42

  Break

• Weeknotes № 41

  Workshop

• Weeknotes № 40

  Taking Time Off

• Weeknotes № 39

  Recording and Experimenting

September

• Weeknotes № 38

  Recording and Experimenting

• Weeknotes № 37

  More UIViewRepresentable Things

• Working With UIViewRepresentable

  Preventing Runtime Warnings and Loops

• Weeknotes № 36

  Swimming and UIViewRepresentable

• Weeknotes № 35

  More Keyframe And Annotated Slides

August

• Running Code When Your View Appears

  onAppear and task are not the same

• How To Visualize The Safe Area

• Weeknotes № 34

  Getting Back Into It

• Weeknotes № 33

  NYC

• Weeknotes № 29-32

  SwiftUI Presentations

July

• Weeknotes № 28

  Bezier Curves

• Weeknotes № 27

  Keyframe Animations

• Weeknotes № 26

  Layout

June

• Weeknotes № 25

  Another Chapter

• Weeknotes № 24

  Book Release

• Weeknotes № 23

  WWDC

• Weeknotes № 22

  Running Again

May

• Weeknotes № 21

  Git and Gardening

• Weeknotes № 20

  Coloring Text and Gardening

• Weeknotes № 19

  Settling In

• Weeknotes № 18

  Moving In

April

• Weeknotes № 17

  Book Typesetting

• Weeknotes № 16

  Book Typesetting

• Weeknotes № 15

  Book Layout

• Weeknotes № 14

  Random Things

• When Matched Geometry Effect Doesn't Work

  The Declaration Order Matters

• Weeknotes № 13

  Moving

March

• Weeknotes № 12

  Recording, Writing and Moving

• Weeknotes № 11

  Book Writing

• Weeknotes № 10

  Book Writing

• Weeknotes № 9

  Book Writing

• You Don't Need Routes

  Simpler Swift APIs

February

• Weeknotes № 8

  Book Writing

• Weeknotes № 7

  Renovation

• Weeknotes № 6

  Workshops and Environment

• Semantic Colors and Styles

  Context-Aware Styling

• SwiftUI Environment Tips

  Precise Updates

• Weeknotes № 5

  Routing and Workshops

January

• Variadic Views

• Weeknotes № 4

  Workshops

• SwiftUI Views are Lists

  The View Protocol Has A Misleading Name

• Weeknotes № 3

  Workshops

• Weeknotes № 2

  Book and Swift Talk

• Weeknotes № 1

  Updating our book

2022

March

• Lifetime of State Properties in SwiftUI

  Surprisingly Subtle

2021

December

• 2021

  My Year In Review

July

• Dependencies

  Why we got rid of most dependencies

2019

December

• 2019

  My Year In Review

October

• Race Report: Berlin Marathon

  Breaking Sub-3 for the Second Time

2017

December

• Swift Analytics

  Comparing structs, enums and protocols

October

• A Micro Auto Layout DSL

  Three Methods To Make Life Easier

July

• Struct References

  Have your cake and eat it

• Reducers

  Dealing With Asynchrony

February

• Classes That Conform To Protocols

  How to use type-erasers as a workaround

January

• Types vs TDD

  A response

2016

November

• Protocol Oriented Programming is Not a Silver Bullet

  Why we should be critical of using protocols

October

• On Burnout

  There is help.

• Type Erasers in Swift

  Two Ways of Implementing AnySomething

August

• Sort Descriptors in Swift

  From Runtime Magic To Functions

• Structs and mutation in Swift

  How I Learned To Stop Worrying and Love mutating

• Protocols in Swift

  Conforming to the Collection protocol

June

• Responder Chain Alternatives

  Simple vs. Easy

May

• Undo History in Swift

  Use Value Semantics for Great Good

• Dynamic Swift

  We're not doomed yet

April

• Rejected Swift Proposals

  What we can learn from the rejections

2015

August

• Struct Semantics in Swift

  Implementing Copy-on-Write efficiently

July

• Literate Swift

  A Tool for Writing Swift and Markdown

• Swift and C functions

  A short look at wrapping qsort

• Advanced Swift

  Our New Book

June

• Via Alpina

  I'll be running across the Alps for a month

• Swift Mirrors and JSON

  Generating JSON dictionaries with reflection

• Monads in Swift

  A very short explanation

April

• Race Report: Rotterdam Marathon

  My first marathon and an ultra-trail

March

• Swift in Production: Scenery

  We shipped our new app

• The Boring Choice

  It's not all glitters and rainbows

January

• Functional View Controllers

  Wrapping View Controllers in a Functional Way

• Repmin in Swift

  Combining Tree Traversals

2014

December

• 2014

  My year in review

November

• Burnout: five years later

  What happened in between getting a burnout and being happy again

• CocoaConf

  Why I'm Not Speaking There

• Lenses in Swift

  Combining getters and setters for great glory

• A tiny networking library

  Composing functions out of functions

October

• Race Report: Munich Marathon

  Coming back from quitting

August

• Tuples, Structs and Enums

  What are the differences?

• Some ideas for projects in Swift

  If you're looking for a cool library to build

• Type-safe URL routes in Swift

  A micro library

• The Blub Paradox in Swift

  Why all the new features look like overkill

July

• Parsing JSON in Swift

• Swift Tricks

  Some useful functions that make life easier

• Functional Programming in Swift

  We're writing a book

June

• QuickCheck in Swift

  Experimenting with Swift

April

• Intentions

  An experiment in Ultralight View Controllers

• We launched Deckset

  What I love about our new Mac app

March

• Fast Running

  How to run a 10K in under 40 minutes

• Working for the man

  How I started being my own boss

February

• Finding designers

  And how to decide whether you want to work with them

• Behind the scenes

2013

December

• Deckset

  Announcing my new Mac app

• 2013

  The year in review

October

• Lightweight Key-Value Observing

  Making KVO simpler and easier

June

• Status Update

  A quick write-up

February

• DONE

  What I've been up to

• How to keep your classes small and clean

January

• New Things

2012

December

• Lighter UIViewControllers

• Implementing Value Objects in Objective C

• How to add a new Unit Test target and OCMock to an existing XCode project

November

• My presentation at the Berlin HUG

• Adding push notifications to an app

September

• More Interface Builder

July

• Traveling alone

May

• Finding My Most Influential Twitter Followers

• Changing Tech Education

• Radical Friendship

April

• Starting new projects

March

• Berlin Tech Meetups

February

• Entitled

• Accessing an API using CoreData's NSIncrementalStore

• I Use This

• Becoming a better programmer: Test-Driven Development

January

• How I write my code

• Take the money

• Speaking Up

• Focus

• Willpower

• Freeform blogging

• My perfect co-founder

• On Breakups

2011

December

• Radical Honesty

• CocoaPods

November

• Hard Decisions

• Satisficers vs. Optimizers

• Survivorship bias

• On Running

• Met has launched

October

• HTML5 is no silver bullet for apps

• Reaching a plateau

• Met In The App Store

• New build, first website, press plans

• How I Will Design My App Website

• Week 3: An App in Four Weeks

• New build and screenshots

• Rotation fun

• Introducing Met

• Beta and Branding

• iOS products are a local optimum

• Week 2: design improvements

• RIP Steve Jobs

• Selecting People Faster

• Start of Week 2

September

• One App in Four Weeks: Week 1

• Sketches and ideas

• Check In to People

• One app in four weeks: kickoff

• Trust your geeks

• Niche and Top Lists apps

• TrackMe plans

• Communicate Often

• AirBnB for dogs

• Lost In Translation

• Be Visible

• Crossing the chasm between design and code

• So, you want to build an app together?

• Why people love and hate Macs

• I've got an idea for an app

• How a burnout changed my life

• How I dealt with a burnout

• How I got a burnout

August

• Lots of Test Projects

• A month of blogging

• On Minimalism

• Selecting which apps to build

• 10 iPhone apps for backpackers

• Book Review: Start Small, Stay Small

• Off on a holiday

• I shipped my first product

• Good coffeeshops in Berlin

• How to succeed as a freelance developer

• Why I want to become rich

• Why I develop for iOS

• Plan it the night before

• On Berlin

• The Big Plan

July

• 30 day experiment: no more sugar

• Analyzing a MySQL database with R

• Hello World!