What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

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I've always wanted someone to write a type-safe framework for tensor manipulation that
a) fully leverages first-class types, and
b) is ergonomic

Maybe that someone has to be me; I wrote a proof-of-concept in Idris and used it to implement transformers:
github.com/bgavran/TypeSafe_Te

It supports standard tensors, and *non-cubical* tensors given by applicative functors, as well tensor indexing.

So if you have a 't : Tensor [BinTree, BinTree] Double' and you index outside of the shape of the tree, you get a *compile-time* error.

Indexing is powered by containers, transposition by Naperian functors, and non-cubical tensors by applicative functors (see cs.ox.ac.uk/people/jeremy.gibb)

I was surprised how far one can go with this idea, and how pleasant it was in general to implement all of this in Idris.

What all of this does is enable you to implement the *generalised transformers* as described here (glaive-research.org/2025/02/11) - transformers that operate on not just vectors, but potentially trees, and other structures too.

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> 5月9日から「わかめ」と「しび辛ラー油」が仲間入りして、無料の薬味とトッピングが全8種類に!楽しさがどんどん広がる丸亀製麺で、あなただけの一杯をぜひ。

わーい

新薬味・トッピング|ここのうどんは、生きている。丸亀製麺 : 👀
---
jp.marugame.com/campaign/toppi

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Hi everyone on and the . 👋

I've posted a statement on our hub about the events of the past weeks and how we intend on doing better:

hub.fosstodon.org/fosstodon-co

Tldr: Sorry about what happened, Fosstodon is committed to being a safe and inclusive space, and we're taking measures to ensure this won't happen again.

Please let me know what you think!

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문수 : 덕수형 11일날 사퇴할거에요? 덕수 : 니가 단일화 안해주면 사퇴함 문수 : 그럼 내가 11일까지 버티면 자동단일화네요? 덕수 : ? 문수 : ㅇㅋ

RE: https://bsky.app/profile/did:plc:oeors5le2tmvqzojsjxxqwro/post/3lola642s3s2g

한덕수 "단일화 이뤄지지 않으면 대선 본후보 등록 않겠...

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:pixelfed: Server Directory 2.0 is here! 🚀

We completely rebuilt our server directory for a better community finding experience:

✅ Infinite scrolling - see ALL servers at once (goodbye pagination!)
✅ Rich server cards with location, user counts and more
✅ Improved filtering with better visibility
✅ Optimized crawling with 2-hour refresh rate (fixed the visibility delays!)
✅ Enhanced UI with improved colors and text legibility

Find your perfect home today:
👉 pixelfed.org/servers

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:pixelfed: Server Directory 2.0 is here! 🚀

We completely rebuilt our server directory for a better community finding experience:

✅ Infinite scrolling - see ALL servers at once (goodbye pagination!)
✅ Rich server cards with location, user counts and more
✅ Improved filtering with better visibility
✅ Optimized crawling with 2-hour refresh rate (fixed the visibility delays!)
✅ Enhanced UI with improved colors and text legibility

Find your perfect home today:
👉 pixelfed.org/servers

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We’re excited to share more details about the ’s investment in GFortran. It advances an open source Fortran compiler, to enable modern, efficient capabilities for high-performance computing and scientific research. The commissioned work improves parallel computing support, fixes critical standards compliance issues, and overhauls key internal systems for better performance and maintainability. Learn more: sovereign.tech/tech/gfortran

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Hi everyone on and the . 👋

I've posted a statement on our hub about the events of the past weeks and how we intend on doing better:

hub.fosstodon.org/fosstodon-co

Tldr: Sorry about what happened, Fosstodon is committed to being a safe and inclusive space, and we're taking measures to ensure this won't happen again.

Please let me know what you think!

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