Hacker News: hcm

New comment by hcm in "Show HN: Apple Health MCP Server"

hcm — Sat, 26 Jul 2025 06:39:56 +0000

Love it!

For getting Apple Health data into duckdb, I’ve used this in the past: https://github.com/dogsheep/healthkit-to-sqlite. (You can load the SQLite database directly in duckdb.)

New comment by hcm in "The Joy of Nand2Tetris"

hcm — Tue, 18 Feb 2025 07:55:21 +0000

I can't recommend nand2tetris highly enough – it's a great crash course in computer architecture, operating systems, compilers, etc. but also it's just mega fun.

A big part of the joy came from making up my own extra credit side quests: implementing a compile-to-WASM emulator for the hack machine, adding optimisations to the compiler to produce smaller and/or faster programs, etc.

Counting OpenAI Tokens

hcm — Sun, 23 Jul 2023 18:29:00 +0000

Article URL: https://hmarr.com/blog/counting-openai-tokens/

Comments URL: https://news.ycombinator.com/item?id=36838195

Points: 2

# Comments: 1

New comment by hcm in "Ask HN: Could you share your personal blog here?"

hcm — Fri, 07 Jul 2023 11:55:03 +0000

https://hmarr.com

New comment by hcm in "Making a Go program faster with a one-character change"

hcm — Mon, 14 Nov 2022 16:41:57 +0000

Thanks! It's just a few dozen lines of CSS. The body font is Inter and the monospaced font is JetBrains Mono.

New comment by hcm in "Making a Go program faster with a one-character change"

hcm — Mon, 14 Nov 2022 16:22:58 +0000

Doh! Thanks for pointing out another silly mistake – I'll fix that.

Making a Go program faster with a one-character change

hcm — Mon, 14 Nov 2022 14:47:23 +0000

Article URL: https://hmarr.com/blog/go-allocation-hunting/

Comments URL: https://news.ycombinator.com/item?id=33594676

Points: 511

# Comments: 236

New comment by hcm in "How stdbuf works"

hcm — Fri, 11 Nov 2022 19:28:28 +0000

(Author here) I don't see that in Chrome so had no idea that was happening – thanks for pointing it out! I'm not a fan of coding ligatures so I just pushed a change to turn it off.

Vitals: A tiny macOS process monitor

hcm — Mon, 22 Mar 2021 21:52:08 +0000

Article URL: https://hmarr.com/blog/vitals/

Comments URL: https://news.ycombinator.com/item?id=26547740

Points: 3

# Comments: 2

New comment by hcm in "Show HN: Search code in GitHub repos using regular expressions"

hcm — Mon, 24 Feb 2020 01:46:59 +0000

I built https://grephub.com for that. It doesn’t maintain an index so it’s not super snappy, but it’s good enough / better than you’d expect in many cases!

New comment by hcm in "Dependabot is joining GitHub"

hcm — Thu, 23 May 2019 12:18:07 +0000

Thanks!

New comment by hcm in "Dependabot is joining GitHub"

hcm — Thu, 23 May 2019 11:59:45 +0000

Thanks! We have plans to make it even more awesome from within GitHub :-)

Show HN: Dependabot automates dependency updates for Ruby and JavaScript (Yarn)

hcm — Fri, 26 May 2017 16:37:42 +0000

Article URL: https://dependabot.com

Comments URL: https://news.ycombinator.com/item?id=14425326

Points: 1

# Comments: 0

10 years of Ruby security disclosures analyzed

hcm — Fri, 26 May 2017 13:53:23 +0000

Article URL: https://dependabot.com/blog/the-latest-dependency-version-is-probably-the-most-secure

Comments URL: https://news.ycombinator.com/item?id=14424015

Points: 3

# Comments: 1

The Troubleshooting Tales: issues scaling Postgres connections

hcm — Wed, 09 Dec 2015 16:47:13 +0000

Article URL: https://gocardless.com/blog/the-troubleshooting-tales-issues-scaling-postgres-connections/

Comments URL: https://news.ycombinator.com/item?id=10704799

Points: 2

# Comments: 0

Docker and CoreOS at Clearbit

hcm — Mon, 20 Jul 2015 17:43:00 +0000

Article URL: http://blog.clearbit.com/servers-part-one

Comments URL: https://news.ycombinator.com/item?id=9917677

Points: 4

# Comments: 0

New comment by hcm in "Postgres Job Queues and Failure by MVCC"

hcm — Wed, 20 May 2015 18:30:16 +0000

Great article. We've just moved a large portion of our async jobs over from Resque to Que because of the huge benefits you get from transactional enqueuing and processing. Performance seems good so far, and if it really becomes an issue, running two queuing systems side by side (one transactional, one high-throughput) seems viable.

We're super cautious about long-running transactions anyway, as they cause a load of other issues (e.g. http://www.databasesoup.com/2013/11/alter-table-and-downtime... - full blog post coming soon!)

Building APIs: lessons learned the hard way

hcm — Fri, 31 Oct 2014 12:19:29 +0000

Article URL: https://gocardless.com/blog/lessons-learned-building-apis/

Comments URL: https://news.ycombinator.com/item?id=8538337

Points: 20

# Comments: 1

New comment by hcm in "Runnable – jsfiddle for everything"

hcm — Mon, 02 Jun 2014 17:39:01 +0000

Similar to http://codecube.io/

New comment by hcm in "Ask HN: Who is hiring? (March 2014)"

hcm — Sat, 01 Mar 2014 15:45:21 +0000

GoCardless (YC S11) is hiring senior software engineers and web operations engineers in London.

We're a fast-growing online payments startup that makes it really simple to collect money with Direct Debit. We've been around for 2 and half years, and are now a team of 25. We're backed by a bunch of top-tier investors (inc. Y Combinator, Accel, Balderton), pay very competitive salaries, and will shortly be moving in to a shiny new office.

We're looking to hire senior software developers to work on our core product, and web operations engineers to scale & manage our infrastructure. We've got lots of interesting challenges to solve this year: building the next generation of our product to handle the growth we're seeing, finding more intelligent ways to fraud-assess our merchants and customers, expanding what we do to work internationally (we're already beta-testing a European expansion).

There's plenty more information at https://gocardless.com/jobs. If you're interested in finding out more, email me at harry@gocardless.com.