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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보리 @bori@baram.me
Public

그런데 페디버스도 블루스카이도 가기 싫은 29472518가지 이유 늘어놓는 사람들은 그런 트위터의 느낌을 사랑하는구나… 저건 애증이야! 하지만 나랑은 다른 길을 갈 사람이겠구나! 그런 생각만 하게 되기도 해요. 같은느낌….

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Simon Tatham @simontatham@hachyderm.io
Public
Shared by Dr. Anna Latour

Visiting my sister and family for Christmas, and they have a shiny new 3D printer, so naturally we've been playing with it. Here's a hats-and-turtles jigsaw puzzle.

The puzzle was made by taking a hat tiling and its combinatorially identical turtle tiling, and making a puzzle piece from each pair of corresponding tiles, so that each piece (or at least each non-edge piece) has a hat-shaped face on one side and a turtle on the other.

Despite this, every piece is different. To make a hat and turtle tiling correspond as closely as possible you must scale the turtles down by an irrational factor √(4/5) to make a turtle have the same area as a hat, and rotate by an irrational angle tan⁻¹(1/√15) to keep the distance between each hat and its turtle bounded. As a result of these irrationals, no two pieces have the hat and turtle in quite the same position relative to each other. Also, the rotation makes corresponding edges skew to each other, so the sides of the puzzle pieces aren't flat planes – they all have a compound curve.

Some of the tiles are truncated by the circular frame, of course. When a piece of tile was just _too_ small, I made it part of the frame, which gives a starting point for placing other pieces. The four-colouring (suggested by my brother-in-law) also provides clues to the layout. I was quite scared that this puzzle would be too hard, and _might_ have gone a bit too far in the other direction making sure it was possible!

Inspired by a thread last year hachyderm.io/@simontatham/1133. Hat tip to Oskar van Deventer, who had a similar idea, and produced a puzzle with hats on one side and the degenerate chevron tile on the other (and without the four-colouring or frame protrusions).

A collection of 3D-printed puzzle pieces. Some appear to be hat-shaped, and some turtle-shaped (but in reality every piece is both, with a hat on one side and a turtle on the opposite side). Some pieces are partial, cut off by a curved edge. The pieces come in four colours: white, black, green and brown. Two black semicircles with a few inner protrusions form a frame that the rest of the pieces are intended to fit into. One black piece, the same colour as the frame, is a hat in the opposite handedness from the othersThe puzzle mostly assembled, but shown in two halves. The rear half has the hats side uppermost, and the front half the turtles side. Each half is shown with the inner edge towards the viewer, so that you can see the slanted and slightly curved edges of the pieces.The fully assembled puzzle, shown on the hats side. The region within the circular frame is tiled perfectly with hats, with no two tiles of the same colour touching.The completed puzzle flipped over, so that the turtles tiling on the other side is visible.
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European Commission @EUCommission@ec.social-network.europa.eu
Public
Shared by Dr. Anna Latour

Wishing you a very Merry Christmas, in all our EU languages 🎄

Joyeux Noël!
Frohe Weihnachten!
¡Feliz Navidad!
Buon Natale!
Feliz Natal!
Весела Коледа!
Veselé Vánoce!
Glædelig jul!
Häid jõule!
Καλά Χριστούγεννα!
Nollaig shona!
Sretan Božić!
Priecīgus Ziemassvētkus!
Džiaugsmingų šv. Kalėdų!
Kellemes karácsonyi ünnepeket!
Il-Milied it-Tajjeb!
Vrolijk kerstfeest!
Wesołych Świąt!
Crăciun fericit!
Veselé Vianoce!
Vesel božič!
God Jul!
Hyvää joulua!

Gold background with white hanging Christmas ornaments, including one featuring the circle of EU stars. Several star-shaped decorations are scattered around, and the European Commission logo appears in the bottom right corner.
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보리 @bori@baram.me
Public

페디버스에서 그럭저럭 큰 인스턴스가 문을 닫는 건 정말… 안타까운 일이긴 한데 물론 당연히 운영측의 고민이 없지는 않았겠지만 오랫동안 자리를 비운 사람들이 생각나서 돌아올 곳이 없어지면 굉장히 … 돌이킬 수 없는 미움을 사게 되겠다는 생각은 늘 하게 되는 것 같아요.

보리 @bori@baram.me
Public
Shared by 洪 民憙 (Hong Minhee) :nonbinary:

공개 서버를 운영하다가 닫게 된 것에는 당연히 충분한 고민이 있기는 하니 닫게 된 곡절에 대해서 따지기도 힘들고 이미 정착해 있는 사람들 입장에서는 평소에는 안 들어올때만 트위터 터졌을 때만 찾는 게 꽤나 얄밉기도 하고 운영 종료 통지를 회원 한 사람 한 사람 집에 찾아가서 통보를 할 수도 없고 … 이렇게 할 거면 조금 더 책임감 있게 공개 인스턴스를 개설해야 하는 더 아닌가 싶으면서도 그런 책임감이나 자금이 크나큰 진입 장벽으로 작동하게 되면 가벼운 이야기는 할 수 없는 공간이 될테고 …. 그런 복잡한 문제가 있단 말이죠….

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보리 @bori@baram.me
Public
Shared by 洪 民憙 (Hong Minhee) :nonbinary:

페디버스에서 그럭저럭 큰 인스턴스가 문을 닫는 건 정말… 안타까운 일이긴 한데 물론 당연히 운영측의 고민이 없지는 않았겠지만 오랫동안 자리를 비운 사람들이 생각나서 돌아올 곳이 없어지면 굉장히 … 돌이킬 수 없는 미움을 사게 되겠다는 생각은 늘 하게 되는 것 같아요.

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純平 @haruchicai@misskey.io
Public

https://www.youtube.com/@inkyo_saba?sub_confirmation=1
登録ぜひぜひよろしくお願いします。
あと2人で✨180人✨…！
年内に200人突破…できたら…！！！

隠居生活鯖

🐐🏝隠居生活鯖はゲームや雑談、作業などをして楽しく過ごすためのDiscordサーバーです。 みんなのプレイログをアップしてるよ。 ----- ロゴデザイン：㈲ 様 https://x.com/you__design_ https://lit.link/youyoujiteki

www.youtube.com · YouTube

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もちもちずきん🍆 @Yohei_Zuho@mstdn.y-zu.org
Public
Shared by もちもちずきん🍆

自分のサーバー :fediverse: でも質問箱やりたい人いませんか？
そんなあなたに :fediqb: というサービスがあります。 はMastodon,Misskey,Pleromaなどから匿名の質問が募集できるサービスです。
・DMでの質問通知（一部例外サーバあり）
・AIでの誹謗中傷フィルタ
・ログインユーザーのみ制限
などの機能を兼ね備えています！
気軽にご利用ください〜
fediqb.y-zu.org

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Jiajun Xu @foolfitz@social.slat.org
Public

日中交流冷卻 日台活躍 年末年初有約30名日本議員訪台
rfi.my/CIPj

在今年年底和明年年初,日本議員訪台活躍,自民黨所屬國會議員接連訪問台灣;另一方面,日本與中國的交流卻陷入停滯。中國對高市早苗首相在國會的答辯反應愈發強烈,原本作為政府間外交補充的對華議員外交一籌莫展。

日中交流冷卻 日台活躍 年末年初有約30名日本議員訪台

在今年年底和明年年初，日本議員訪台活躍，自民黨所屬國會議員接連訪問台灣；另一方面，日本與中國的交流卻陷入停滯。中國對高市早苗首相在國會的答辯反應愈發強烈，原本作為政府間外交補充的對華議員外交一籌莫展。

www.rfi.fr · RFI - 法國國際廣播電台

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보리 @bori@baram.me
Public

페디버스에서 그럭저럭 큰 인스턴스가 문을 닫는 건 정말… 안타까운 일이긴 한데 물론 당연히 운영측의 고민이 없지는 않았겠지만 오랫동안 자리를 비운 사람들이 생각나서 돌아올 곳이 없어지면 굉장히 … 돌이킬 수 없는 미움을 사게 되겠다는 생각은 늘 하게 되는 것 같아요.

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