Native apps for Apple platforms.

I'm Robin Hallabro-Kokko, a native app developer in Borås, Sweden. I build apps through HK Softworks, using AI as part of my development workflow.

I write about the problems I encounter along the way. Away from the keyboard, I enjoy cycling, books and travel.

Discuss a project GopherCon 2024 talk

Robin Hallabro-Kokko at GopherCon, standing by a window overlooking a marina

Green fields and a lake under a clear sky in Sweden

Robin Hallabro-Kokko skiing in a yellow jacket on a mountain slope

Confetti falling over a stadium at night

Robin Hallabro-Kokko after Vätternrundan, in a cycling kit with a medal

Selected writing

All articles

Go JSON unmarshalling for custom types

6 June 2022

Fix the stack overflow when a Go UnmarshalJSON or MarshalJSON method calls json.Unmarshal on its own type: convert to a temporary type to break the loop.

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Transfer a Hetzner load balancer IP to another project

6 May 2025

Hetzner can't transfer a load balancer between projects. Within one account I kept its IP: delete it, wait two minutes, recreate it in the same location.

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Troubleshooting SMTP servers with Swaks

29 May 2015

Troubleshooting SMTP servers with Swaks

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