Daniel Ma
danielma.online
Daniel Ma
@danielma.online
TIL that Giant Sequoias have remarkably shallow root systems. Only 12-14 feet at maturity for a tree that can be 300 feet tall boggles the mind
February 16, 2026 at 5:33 AM
TIL that San Diego actually has a healthy fossil record, including it’s own extinct species of walrus, aptly named the Chula Vista Walrus.

We went to the San Diego Natural History Museum for the first time today. What a cool pla... https://danielma.online/2026/02/14/til-that-san-diego-actually.html
February 15, 2026 at 6:12 AM
TIL that Steven Pastis (of Pearls Before Swine) wrote a series of children’s graphic novels called Trubble Town. I was delighted when we found it at the library. It’s so fun to share authors I enjoy with my kids
February 14, 2026 at 4:20 PM
TIL about superset.sh and tools like it for running parallel agents.

This was the week where the tide turned for me and I began to want tooling for agents across multiple repos at once. At first blush, I’m not impressed ... https://danielma.online/2026/02/12/til-about-httpssupersetsh-and-tools.html
February 13, 2026 at 4:28 AM
TIL about Istanbul, the JS code coverage tool, while looking to add it to a project

Fun side fact: one of the associated CLIs is called NYC, and that feels like a They Might Be Giants song
February 12, 2026 at 6:46 AM
TIL that non-profits in the US are (broadly) not required to issue donation statements. It’s considered the duty of the donor to keep receipts

This fascinated me, from a data and records perspective, and in the realm of norms.
February 11, 2026 at 7:44 AM
TIL that the React Compiler effectively turns all props etc into a useMemo call

This makes sense when considering the nature of the compiler, but isn’t immediately obvious without using the playground

I learned this because we ... https://danielma.online/2026/02/09/til-that-the-react-compiler.html
February 10, 2026 at 7:59 AM
February 9, 2026 at 6:53 AM
TIL that Ned Brower (who plays Nurse Jesse on The Pitt) is a real life ER nurse!

Thanks to The Prestige TV Podcast for the info
February 8, 2026 at 7:56 AM
TIL a little bit about Expo Config plugins. One of the apps I’m working on has a decent list of them since it was converted to CNG after being around for a couple of years.

It’s interesting to read them, make sense of them, and get started writing my own (I’m stuck on node path issues)
February 6, 2026 at 5:37 AM
TIL about the frequent antics of Alice Roosevelt. I’m reading You Didn’t Hear This From Me, which is a delight on all fronts.

It’s a through line of the book, the way that women’s behavior and interaction with each other is sc... https://danielma.online/2026/02/03/til-about-the-frequent-antics.html
February 4, 2026 at 7:08 AM
TIL about the idea of a Union church, which is an English speaking Christian church in a foreign country that isn’t associated with any particular denomination

There’s something to observe there, about taking some measure of consumerism and choice away and discovering what really matters to you
February 2, 2026 at 8:20 AM
TIL about the red-shouldered bug. We saw a surprising number of them at the pickleball courts, and based on their behavior it’s mating season.

My recent travel inspired me to pay more attention to local wildlife, so I took some pictures and found the name this evening
February 1, 2026 at 4:49 AM
TIL about the band Four Tet, a recommendation from my friend Geo. Very cool electronic music, particularly well suited to working

He brought me to Waterloo Records during our recent trip to Austin
January 31, 2026 at 5:55 AM
TIL about true mirrors, which are specially constructed multi-pane mirrors that are non-reversing so you see your reflection the way others see you. If they were at all practical (i.e. not requiring significant depth) I would lo... https://danielma.online/2026/01/29/til-about-true-mirrors-which.html
January 30, 2026 at 7:41 AM
TIL that the first Yeti store was in Austin, Texas. I walked there with a coworker today, and they even have a bar as part of the store.
January 29, 2026 at 6:56 AM
TIL that the first bridge across the Colorado River in Austin, Texas was a pontoon bridge

All my gratitude to the Austin landmark signage
January 28, 2026 at 4:52 AM
Austin
January 28, 2026 at 4:50 AM
TIL about The Five Dysfunctions of a Team during a managers retreat for work.

I’m excited to engage with the ideas, and probably read the whole book soon. I recognize some of the dysfunction on my team, and the hierarchical structure offers a helpful path towards building the way I want to work
January 27, 2026 at 5:24 AM
TIL about the process of de-icing a runway

I flew into Austin for work today, and landing was delayed by an hour for an iced runway. Since I’m from California, I know so little about cold weather management. It’s always such a broadening experience to learn things like this
January 26, 2026 at 7:04 AM
TIL a bunch of fun facts about Tapei 101. Some before, some during watching the Honnold climb

Most interesting to me were the damper mechanism at the top and the “bamboo box” design, and how those “boxes” make it a good building for free climbing
January 25, 2026 at 6:24 AM
TIL a little bit about dog breed standards. Apparently there is only a 3 inch height window in which a Golden Retriever could even be considered in a show ring (and in that case, probably a breeder as well).

I learned all this in con... https://danielma.online/2026/01/23/til-a-little-bit-about.html
January 24, 2026 at 7:41 AM
TIL the Expo Modules API. I have a thorny problem I want to solve with native webviews, and Claude just isn’t cutting it on its own.

Bonus fact: you can write native views that have ergonomic event callbacks and that interact with ... https://danielma.online/2026/01/23/til-the-expo-modules-api.html
January 23, 2026 at 8:07 AM
TIL about the Gemini CLI. I’ve been having Claude code hack at a thorny problem recently, and keep running into walls, so I figured I’d try something else

On first pass, it performed worse, but also revealed a shortcoming in my own... https://danielma.online/2026/01/20/til-about-the-gemini-cli.html
January 21, 2026 at 7:08 PM
TIL how to play Dutch Blitz. I know I’ve learned it before, but maybe this time will stick

I had a chance to play with my daughter and some nieces today. I’ve never been a fan of speed card games, but I’ll take any chance I can get to play games with them
January 19, 2026 at 7:14 AM