E2EE Backend part 1: Homomorphic Encryption
First in a series on privacy-first backends: demo shows how to sum encrypted numbers using Apple's HomomorphicEncryption (BFV) without decrypting data. Server sees only ciphertexts.
Development
Blog
Pelgrims Path part 01
Hiked part 1/27 of the Pelgrims Path, 17.3 kilometres from Amsterdam to Amsterdamse Bos.
Hiking
Monthly update #0429 • January 2025
Monthly update 429 • January 2026 • 2026-01-01 - 2026-01-31
Monthly Updates
Utrecht Path part 10
Hiked 18.0 kilometres from Hollandsche Rading to Maarssen.
Hiking
Announcing the Windows Workgroup
Swift starts a Windows workgroup to maintain support, improve tools and packages, and guide future work on the platform.
Development
Utrecht Path part 09
Hiked 13.5 kilometres from Baarn to Hollandsche Rading.
Hiking
Improving the usability of C libraries in Swift
Swift calls C libraries easily, but they feel unsafe and old. Use module maps and API notes to make them safe, modern, and Swifty without changing the C code.
Development
Toxic Empathy by Allie Beth Stuckey
Allie Beth Stuckey's 'Toxic Empathy' argues that progressives manipulate Christian compassion through empathy on issues like abortion, gender, and immigration, calling for truth-based responses.
Books
Utrecht Path part 08
Hiked 17.0 kilometres from Amersfoort to Baarn.
Hiking
End-to-End The Worlds Longest Train Journey by Scott Manson
Scott Manson's book 'End-to-End' recounts his 18,295 kilometres, 35-day train journey from Portugal to Vietnam in 2019. He describes people met, landscapes, food, challenges, and how Covid later made the route impossible.
Books
Number Station 44
Number Station 44. At the end of the dial, the numbers never lie.
Projects
On Democracies and Death Cults by Douglas Murray
Douglas Murray wrote On Democracies and Death Cults. He looks at the fight between Israel and Hamas. Murray calls it a clash between a free country and a group that loves death.
Books
Monthly update #0428 • December 2025
Monthly update 428 • December 2025 • 2025-12-01 - 2025-12-31
Monthly Updates
I love snow
Today it snowed again, and it stayed on the ground. This does not happen often in the Netherlands any more. I love snow. I always have, and I always will.
Journal
Goals of 2026
3 goals this year, lose weight, start dating, start a business
Journal
Reflecting on the year 2025
Reflection on the year 2025, checking progress of the goals, and some numbers.
Journal
Fucking Approachable Swift Concurrency
Swift Concurrency can feel like a lot of concepts: async/await, Task, actors, MainActor, Sendable, isolation domains. But there's really just one idea at the center of it all: isolation is inherited by default.
Development
The Holy Bible
The Holy Bible is the word of God given to men over many centuries. Christians turn to it for guidance in life, comfort in pain, strength in trials, and hope for eternity. It shows God's plan from the beginning to the end.
Books
The Holy Bible - Revelation
The Book of Revelation is the last book of the Bible, written by the apostle John around 95 AD while exiled on Patmos. God gave him visions of the future, judgement on evil, and the final victory of Jesus Christ.
Christianity
Merry Christmas
Merry Christmas to all. Let us recall what this day truly means. Christmas marks the birth of our Lord and Saviour Jesus Christ. God sent His Son into the world to save us. That gift stands above all else.
Christianity
Top Four
A /top4 page is a personal webpage where you can share your definitive ranked list of your top 3 favourites and an honourable mention.
Projects
The Time Machine by H.G. Wells
H.G. Wells’s The Time Machine tells of an inventor who builds a device to travel through time. He goes far into the future, to the year 802701 AD, where he finds humans split into two kinds: the gentle Eloi who live above ground and the brutal Morlocks who dwell below.
Books
The Holy Bible - Jude
The Letter of Jude is a short, urgent warning from Jude, brother of James and Jesus, written around 65–80 AD. He fights false teachers who crept into the church, twisted grace into licence for sin, and denied Christ’s authority.
Christianity
The Holy Bible - Third John
The Third Letter of John is a very short personal note from the apostle John, written around 85–95 AD, to his friend Gaius. John praises Gaius for his faithfulness and hospitality to travelling teachers.
Christianity
The Holy Bible - Second John
The Second Letter of John is a short note from the apostle John, written around 85–95 AD, to a chosen lady and her children, likely a church and its members.
Christianity