Hacker News: subset

New comment by subset in "What do Visa and Mastercard do? An intro to card networks"

subset — Fri, 11 Sep 2026 07:53:44 +0000

In Australia, the Reserve Bank is finally [banning surcharges](https://www.rba.gov.au/payments-and-infrastructure/review-of...) from October 1st. We also have the EFTPOS network, but the payment rails change depending on the card payment method.

Over the years, the "hidden fees" were accumulating, and card surcharges could hit 1-2.5%. Now, _most_ places don't have any fees (with some food places charging weekend surcharges and some egregious places adding unsolicited tips).

Redactle: The Daily Wikipedia Game

subset — Tue, 25 Aug 2026 09:38:45 +0000

Article URL: https://redactle.net/

Comments URL: https://news.ycombinator.com/item?id=49431158

Points: 2

# Comments: 0

Crafting QR Codes: A deep dive into QR code art (2024)

subset — Mon, 24 Aug 2026 14:15:38 +0000

Article URL: https://kylezhe.ng/writes/crafting-qr-codes

Comments URL: https://news.ycombinator.com/item?id=49420116

Points: 134

# Comments: 13

Mathematical Discourse

subset — Sun, 23 Aug 2026 11:36:44 +0000

Article URL: https://www.mathematicaldiscourse.org/

Comments URL: https://news.ycombinator.com/item?id=49407979

Points: 2

# Comments: 2

Faster floating point math with Rust's new API

subset — Thu, 06 Aug 2026 13:43:12 +0000

Article URL: https://pythonspeed.com/articles/faster-float-math-rust/

Comments URL: https://news.ycombinator.com/item?id=49196581

Points: 112

# Comments: 58

The Encyclopedia of Database Systems

subset — Tue, 04 Aug 2026 13:36:37 +0000

Article URL: https://dbdb.io/

Comments URL: https://news.ycombinator.com/item?id=49168812

Points: 1

# Comments: 0

Mullvad Exit Nodes on Tailscale

subset — Tue, 04 Aug 2026 13:02:12 +0000

Article URL: https://tailscale.com/docs/features/exit-nodes/mullvad-exit-nodes

Comments URL: https://news.ycombinator.com/item?id=49168303

Points: 2

# Comments: 0

Thoughts about the Leiden Declaration by Timothy Gowers

subset — Thu, 30 Jul 2026 09:46:19 +0000

Article URL: https://gowers.wordpress.com/2026/07/26/thoughts-about-the-leiden-declaration/

Comments URL: https://news.ycombinator.com/item?id=49107813

Points: 2

# Comments: 0

Turning the database inside-out with Apache Samza (2015)

subset — Sat, 25 Jul 2026 09:38:07 +0000

Article URL: https://martin.kleppmann.com/2015/03/04/turning-the-database-inside-out.html

Comments URL: https://news.ycombinator.com/item?id=49046082

Points: 2

# Comments: 0

New comment by subset in "Everyone should know SIMD"

subset — Fri, 24 Jul 2026 05:54:16 +0000

I learned R for statistical programming at uni, where there was less emphasis on vectorised computation, so it didn't jump to mind, but yes! I've never quite felt like numpy 'clicked' for me in the same way, though. It always felt a bit bolted on, which I suppose it is, as a library (though @ operator overloading etc makes things somewhat nicer now).

New comment by subset in "Quality non-fiction books are the antithesis of AI slop"

subset — Fri, 24 Jul 2026 05:51:46 +0000

As it happens, I had the same job as the author at uni. I shelved books at the biomedical and sciences library. As a life-long book lover, it was a dream uni job being surrounded by all sorts of historical treatises on medical arcana.

I've been really exercising my non-fiction reading muscles of late. I'm trying weaponise it as an antidote to AI slop and doom-scrolling. My last read was Designing Data-Intensive Applications by Martin Klepmann (the newly released second edition), it was a wonderful read!

New comment by subset in "Everyone should know SIMD"

subset — Thu, 23 Jul 2026 11:35:10 +0000

I'm no fan of closed-source languages, and lord knows MATLAB has its warts. But I can't deny that it was pretty seamless to write efficient vectorised code for numerical simulations at uni. I don't have much experience with it, but my understanding is that Julia is the closest thing to a more modern and expressive language that has similar vectorisation capabilities.