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A DataLoader that still had an N+1
GraphQL DataLoaders batch away the classic N+1 problem — until you run a per-row query while building the loader key. Here is one that slipped through.
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Searching a 1.2 GB MongoDB dump with Claude
A client handed me a 1.2 GB MongoDB database dump and asked me to find where a specific piece of text was stored. The text — a Dutch veterinary note…
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Analog clock on a round display
I built an analog clock on a round TFT display, running on an ESP32. The clock face looks like a proper analog clock – hour, minute and second hands on…
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Kotlin typealias
The typealias can be handy to define very simple types. But be aware that it is not represented in bytecode – typealiases are simply replaced by the type they represent…
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My LED clock got featured on Hackaday
My LED circle clock got picked up by Hackaday – always a nice surprise to find your project featured there. The idea started when I found a 241-LED ring on…
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Workshop St. Michael College
Download de Arduino IDE van https://www.arduino.cc/en/main/software of vanuit de windows app store Start de IDE Verbind de Arduino met de computer. Het kan zijn dat eerst nog een driver voor…
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Arduino Uno TFT 2.4″ ILI9342
On AliExpress there are a lot of screens meant for the Arduino’s. Most of the time the driver chip is not mentioned in the description and that is how I…
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WTF code fragments
Those code fragments are real-life production fragments used in large corporate systems. Why should I just return only the value I need? Lets take the last value of a list…