Despite nearly 15 years of developing iOS apps on a daily basis, it’s occasionally jarring to go back to some of the older APIs. Today's blog is about MapKit, which isn't quite as old as CoreGraphics,...

In my work, I've been doing a lot of ETL pipeline design recently for our geocoding system. The system processes on the order of a billion records per job, and failures are part of the process. We wan...

This isn't so much a TIL as a quick PSA. If you're a Rust developer and need to ensure specific things about your toolchain, the rust-toolchain.toml file is a real gem! I don't quite remember how, but...

In the weeks since my previous post on Working with Arrow and DuckDB in Rust, I've found a few gripes that I'd like to address. Memory usage of query_arrow and stream_arrow In the previous post, I use...

My day job involves wrangling a lot of data very fast. I've heard a lot of people raving about several technologies like DuckDB, (Geo)Parquet, and Apache Arrow recently. But despite being an "ear...

Over the past two weeks, I've been focused on optimizing some data pipelines. I inherited some old ones which seemed especially slow, and I finally hit a limit where an overhaul made sense. The pipeli...

Today I had a rather peculiar need to search through features from TIGER matching specific attributes. These files are not CSV or JSON, but rather ESRI Shapefiles. Shapefiles are a binary format which...

I've lived in South Korea for quite some time, and during my stay here I've become reasonably fluent in the language. People often ask how long it took to become fluent and if I have any tips for thei...

I just listened to a fantastic Two's Complement podcast episode (transcript) in which Matt and Ben discussed a data structure I'd never heard of before: the sequence lock. It is not very well known, b...

Sometimes I want to copy files from a remote machine--usually a server I control. Easy; just use scp, right? Well, today I had a subtly different twist to the usual problem. I needed to transfer a ~10...