Herman Schaaf

Sky Lobby is a game where you design elevator routes through a busy skyscraper.

Today I want to share something quite personal, and more emotional than I would typically post on this blog.

So, to set the backdrop: It's May 2026, and we're all talking about AI, all the time.

A few weeks ago I launched the Moya Chinese iOS app, the spaced-repetition Chinese flashcards app that, eleven years after my first attempt, finally seems to be working for me.

Today, I'm super happy to launch my new iOS app for learning Chinese, 11 years in the making.

I've added a new game to the site: Picnic on the Moon. 🚀 It's a daily puzzle game where you need to figure out the hidden connection between the items that a robot is bringing on a picnic.

For a long time now, it's been possible to divide the software world into two camps: those who see code as a craft, and those who see code as a means to an end.

I still remember the first time I tried doing a cryptic crossword.

The New York Times Spelling Bee is a fun little puzzle game that asks you, given seven letters, to find as many words with those letters as you can.

It's almost the end of 2024, making it a good time to reflect on the past year.

After a brief 6 year hiatus, I felt it was time I started posting to my blog again.

I love reading nonfiction.

Go 1.9, released in August 2017, introduced the maths/bits package.

When news broke that React Native was open sourced on Friday, I felt elated.

Something I often hear new Go developers say is that they are looking for some good projects to study, learn from and contribute to.

I first discovered regular expression crosswords two weeks ago, when RegexCrossword.com appeared on the Hacker News front page.

There are two test options that make testing in Go especially powerful: one is -cover, which generates test coverage reports, and the other is -race, which warns of possible race conditions in your code.

In this article I investigate the computational performance of various string concatenation methods in the Go programming language.

Earlier this week I wrote a post titled The Popularity of Go.

When you look at the Google Trends graph above, it would seem like the Go programming language, also known as Golang, is on its way to big things.

Rugby is a sport close to my heart.

Problem Given a string s, partition s such that every substring of the partition is a palindrome.

Problem Find the square root of a given number rounded down to the nearest integer, without using the sqrt function.

Wow, this hit Hacker News front page!

This past weekend, I attended the Startup Weekend event in Hsinchu, Taiwan.