Simon Willison’s Weblog

Sunday, 6th June 2021

An incomplete list of skills senior engineers need, beyond coding. By Camille Fournier, author of my favourite book on engineering management “The Manager’s Path”. Number one is “How to run a meeting, and no, being the person who talks the most in the meeting is not the same thing as running it”. # 10:17 pm

Apple’s tightly controlled App Store is teeming with scams. I’m quoted in an article in the Washington Post today (linked at the top of the homepage!) explaining how I got scammed on the App Store and spent $19 on a TV remote app with a similar name to the official Samsung app. I mistakenly assumed that the App Store review process wouldn’t allow an app called “Smart Things” to show up in search when I was looking for SmartThings, the official name—and assumed that Samsung were nickel-and-diming their customers rather than expecting the App Store review process to have failed so obviously. # 10:13 pm

The humble hash aggregate (via) Today I learned that “hash aggregate” is the name for the algorithm where you split a list of tuples on a common key, run an aggregation against each resulting group and combine the results back together again—I’d previously thought if this in terms of map/reduce but hash aggregate is a much older term used widely by SQL engines—I’ve seen it come up in PostgreSQL explain query output (for GROUP BY) before but didn’t know what it meant. # 4:03 pm

2021 » June