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Radan

@radan.dev

147 followers 120 following 253 posts

Software developer, RubyZG organizer, Author of masterhotwire.com, Runner, Dog Owner, Father (in increasing order of importance). Website: radan.dev

Posts Replies Media

Radan @radan.dev · 06/08/2026

View of Julian Alps from Logarska valley at dusk.

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Radan @radan.dev · 20/07/2026

What AI? 😁

A book on the front porch table with a glass of cold beer next to it and an Adriatic view in the background.

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Radan @radan.dev · 30/05/2026

Some photos from first day of RubyConf Austria:

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Radan @radan.dev · 20/05/2026

There's a river with a small trail near my office. Morning and mid day pre-lunch walks with Karlos are, hands down, the highlights of any day at the office.

My dog Karlos chilling on a trail next to the local river.

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Radan @radan.dev · 12/04/2026

Motovun (known for its film festival in the summer)

Oprtalj (also, top of the last large climb in the race)

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Radan @radan.dev · 12/04/2026

Yesterday I did 69km of Istria, longest distance I ever did. Exhausting: yes, but the landscape is amazing. If you’re looking for a place for some trail running, you won’t go wrong with Istria. Few more photos in comment.

View od lake Butoniga from the climb towards Motovun

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Radan @radan.dev · 19/03/2026

Test coverage metrics are one of the tools for evaluating the quality of tests without reading them. Which is kind of relevant in the age of coding agents. So here, a short light intro to 4 different ones: line, branch, path and condition coverage. radanskoric.com/articles/how...

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Radan @radan.dev · 02/01/2026

Btw, this is what I ended up doing, if I can accomplish the same thing without custom code I'll be happy to replace it! :) Depending on how precise you need it, you might also use concurrency control with discard behaviour, but in my case it wasn't important.

# Enqueue only if there isn't an already enqueued instance waiting.
# This is how our debouncing mechanism works.
def schedule_safely!
unless QueueAdapterService.scheduled?(self.name)
set(wait: DEBOUNCE_DELAY).perform_later
end
end

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Radan @radan.dev · 21/11/2025

I own 3 pairs of Vibram Five fingers. I mix them up w. regular running shoes. Love them but it’s a slow build up. Took me ~1.5 years to slowly build up to 10-15km in them. I feel less prone to injuries because of them. Marathons I still do in regular shoes. Why are you asking?

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Radan @radan.dev · 14/11/2025

Just finished Andrey Karpathy's epic 3.5h Deep dive into LLMs: www.youtube.com/watch?v=7xTG... It closed so many gaps in my mental model of how they work! I recommend taking notes for personal recollection, I took a bunch. And yes, I know I write like that a child that just learned to write. 😄

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Radan @radan.dev · 08/09/2025

RailsWorld in Amsterdam was intense but also very rewarding. Met old friends, new friends, online friends. I'm writing up a blog post to sum it all up, but for now, here's a photo of the most intense, stresful moment: hooked up to mic, people coming in, waiting for the start ...

Photo of the stage from the back, from perspective of me waiting to walk on

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Radan @radan.dev · 05/09/2025

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Radan @radan.dev · 17/08/2025

I'm working on the web version of masterhotwire.com and I like how meta it is. It's a version of the book built using the technology from the book and I'm using this unfinished version to look up things I forgot while I'm working on finishing it.

Screenshot of a work in progress UI for the book, showing stimulus action parameter passing syntax.

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Radan @radan.dev · 07/08/2025

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Radan @radan.dev · 23/07/2025

Ok, I'll be honest. I was a bit skeptical about the value of the addition of "it" as an implicit keyword for the block parameter. Until now. Now I'm sold on it. :) #ruby

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Radan @radan.dev · 19/07/2025

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Radan @radan.dev · 19/02/2025

I love it when Ruby makes me smile with its elegance. Need to find next few months that start on a Monday? No problem. (P.S. yes, there's some ActiveSupport in there) #ruby #rubyonrails

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