Subhomoy Haldar
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hungrybluedev.in
Subhomoy Haldar
@hungrybluedev.in
Software Developer, Published Author, Researcher, Designer.

Founder at @coderscompass.org

Website: hungrybluedev.in
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Set Theory for Beginners is out today and it’s the top result for the search term on Amazon UK!

It is available on all Amazon marketplaces, Gumroad, Barnes & Noble, Apple Books, and everywhere you get your ebooks from. Grab a copy and let me know your thoughts!

coderscompass.org/books/set-th...
It was very simple to set up a tailscale network-wide self-hosted DNS. Briefly, these are the steps:

1. Ensure that the device where you will be running your DNS (something like adguard with docker compose) is registered and has a static tailscale IP.
2. Start your DNS server/container.

(1/3)
August 30, 2025 at 11:42 AM
An excellent guide for upgrading from Debian 12 to 13. I could upgrade with no problems on old hardware. Didn't even have to restart my containers!

linuxiac.com/how-to-upgra...
How to Upgrade to Debian 13 (Trixie) from 12 (Bookworm)
A tried-and-true step-by-step guide for a hassle-free upgrade to Debian 13 (Trixie) from Debian 12 (Bookworm).
linuxiac.com
August 15, 2025 at 4:34 PM
I am thrilled to announce that paperback copies of Set Theory for Beginners are now available!

All copies are signed and numbered by me. Get in touch if you want a copy. 😁
We are excited to announce that signed paperback copies of "Set Theory for Beginners" are now available for purchase! 🎉

Get in touch with us, or visit our website coderscompass.org to obtain a copy.
July 23, 2025 at 11:50 AM
Reposted by Subhomoy Haldar
Email is the cockroach of the internet - it outlives every wave trying to kill it. Forget Slack, forget Discord, forget chat apps. Email is universal, decentralized, and asynchronous. It's not sexy, but it's the ultimate survivor.
May 18, 2025 at 6:44 AM
Reposted by Subhomoy Haldar
I may have a PhD, but I regularly write my entire name in the "first name" box on forms.
February 25, 2025 at 12:51 AM
My attempt at making educational short form content!

Let me know what you think about it. Open to suggestions!
Why is the empty subset a valid subset of every set?

Let's investigate this through a bookstore example.

Learn more about set theory from our book: Set Theory for Beginners.

coderscompass.org/books/set-th...
February 9, 2025 at 8:08 PM
Set Theory for Beginners is out today and it’s the top result for the search term on Amazon UK!

It is available on all Amazon marketplaces, Gumroad, Barnes & Noble, Apple Books, and everywhere you get your ebooks from. Grab a copy and let me know your thoughts!

coderscompass.org/books/set-th...
January 22, 2025 at 9:40 AM
Reposted by Subhomoy Haldar
Another nail in the coffin of cosine similarity!
I started disliking cossim some years ago due to multiple reasons such as the non-linearity around 0.0 and the loss of certainty-information due to the normalization of feature vectors but this study seems to give another good reason to abandon it.
Cosine Similarity: Not the Silver Bullet We Thought It Was | Shaped Blog
In the world of machine learning and data science, cosine similarity has long been a go-to metric for measuring the semantic similarity between high-dimensional objects. However, a new study by resear...
www.shaped.ai
January 14, 2025 at 6:26 AM
I have sent out the final version of my ebook to Amazon, Draft2Digital and everything is in place for next week's release date!

My book Set Theory for Beginners comes out on 22nd January. Hope you all enjoy this book!

coderscompass.org/books/set-th...
Set Theory for Beginners | Coders' Compass Publishing
An accessible introduction to set theory for beginners and self-taught learners.
coderscompass.org
January 13, 2025 at 6:31 PM
Today's installment in why shouldn't work when you're tired:

Integration tests pass locally but not in the CI. What gives?

I forgot to commit and push a file to the branch. That's it. Wasted the equivalent of a day.

The holidays can't come soon enough. 🥹
December 20, 2024 at 4:19 PM
Reposted by Subhomoy Haldar
Phase Transition xkcd.com/3025
December 16, 2024 at 8:01 PM
Reposted by Subhomoy Haldar
ASK A DEV!!
Since the year is near the end it's time for one of my favorite things to do, Ask A Dev!

If you have any questions, if there is something confusing you, this is a no judgement space.

Either I or another dev will answer!
Devs, please help these folks out!
December 12, 2024 at 1:09 PM
Reposted by Subhomoy Haldar
I got sick of my console complaining I don’t have a favicon when I'm testing stuff locally, so now I just put an empty SVG in there.

`<link rel="icon" type="image/svg+xml" href="data:image/svg+xml,<svg></svg>" />`
December 2, 2024 at 9:17 AM
Reposted by Subhomoy Haldar
If you use SQLite and haven't read this article by Sylvain Kerkour, you should read it.

kerkour.com/sqlite-for-s...
kerkour.com
November 30, 2024 at 8:54 PM
I feel ecstatic today. Got my first 2 pre orders on Gumroad! ❤️❤️

Feel free to jump in on the action!

store.coderscompass.org/l/set-theory...
[PREORDER] Set Theory for Beginners - Coming 22nd January 2025
PRE-ORDER NOWBook releases January 22nd, 2025Transform your understanding of mathematics and computer science through the fundamental principles of set theory. Written by software developer and resear...
store.coderscompass.org
November 29, 2024 at 5:38 PM
Reposted by Subhomoy Haldar
Atoms are binary. They are either intended to be hydrogen or helium. We can't just scrap this worldview just because of a handful of exceptions
November 28, 2024 at 1:02 PM
Reposted by Subhomoy Haldar
Reminder. I wouldn't have the career I do now if I didn't have access to our generation's equivalent of social media.
November 28, 2024 at 10:37 PM
Reposted by Subhomoy Haldar
Someone became a dev at 18.
Someone became a dev at 50.

Leonardo Dicaprio started acting at age 5!
Samuel L Jackson didn't get a starting role until he was 40.

Someone got their first job when they were 16.
someone changed a career at 55!
You aren't late, you're right on time!
November 29, 2024 at 5:32 AM
Reposted by Subhomoy Haldar
Make art that you think is fuckin sick as hell. Make the shit you never thought you could that you always wanted to see. Beat your insecurity to death and fight to become your own favorite artist.
November 26, 2024 at 5:18 AM
Reminder!

My Set Theory for Gophers talk is happening today evening.

Golang Talks @ Pivot+Mark, 6 PM onwards.
November 26, 2024 at 3:22 PM
PHP can do anything!

I used it at work to build a classifier based on keywords in the description. It worked really well as a production prototype.

We'll supplement the classifier with a better dataset but it will stay as a backup.
I've been mired in building machine-learning models in... PHP for the last few days.

I never thought I could pull this off, but it would appear I have a pretty accurate audience size prediction system using ridge regression on hand-collected data.

Still fiddling with it, but it's working 🤯
November 24, 2024 at 2:28 PM
Reposted by Subhomoy Haldar
open source and free software is neat
November 20, 2024 at 5:08 AM
Dear Mutuals and Followers,

Does anyone have experience with local version control for spreadsheets? Ideally the Microsoft Excel: XLSX format?

Git would need a binary diff detection extension, I think?
November 19, 2024 at 12:12 PM