Sign in

yujiyokoo.bsky.social

@yujiyokoo.bsky.social
14 followers 13 following 29 posts
PostsRepliesMedia
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 19/09/2026
First day of the long weekend. I spent a lot of it reading, and finished reading this book!
“同志少女よ敵を撃て” by 逢坂冬馬
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 15/09/2026
AC-Bu exhibition at Isetan Shinjuku. Excellent art
Art at AC-Bu art exhibitionArt at AC-Bu art exhibitionArt at AC-Bu art exhibitionArt at AC-Bu art exhibition
010
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 14/09/2026
Visited my hometown on the weekend. Still love this place but felt the decline of country-side Japan, even within Tokyo prefecture
View of Tamagawa riverView of Tamagawa river from the middle of a bridgeWell with a spiral path leading down to itView of a quiet town
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 27/08/2026
I taught Brazilian Jiu Jitsu again tonight! Oh, and more people showed up than the last time. I reckon it was because of the better weather this time!
A human wearing a rash guard and Jiu Jitsu gi pants holding a Jiu Jitsu gi top and a belt
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 24/08/2026
Köln 75 at Shimotakaido Cinema. I love Keith Jarrett’s Köln concert album and have listened many times but knew nothing about the story begins it so it was cool to see (even though it was entertainment, not documentary)
010
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 23/08/2026
Takashi Yanase Exhibition: Life is a game of joy 2026 at Setagaya Literary Museum. It was amazing! Unfortunately they didn’t allow photography in the exhibition itself.
Setagaya Literary Museum entrance with “Takashi Yanase” written on the doorsTakashi Yanase Exhibition sign in front of the stairsTakashi Yanase’s self-portrait rabbit at the entranceAnpanman and Baikinman pictures hung next to each other along the stairs
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 13/08/2026
Occasionally I teach Brazilian Jiu Jitsu. Tonight, so few people came to the class but I blame the rain and the summer holiday season, not my class or myself 😂
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 10/08/2026
Yet another cider place in Shibuya. They have 3 cider taps connected and they are all great
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 09/08/2026
Watched The Life of Chuck today. Loved it!
Exterior view of Shimotakaido CinemaJapanese poster of The Life of Chuck
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 08/08/2026
I wrote a thing, or two, about events from long long ago... (better late than never, they say) yujiyokoo.dev/mruby/ruby/z... yujiyokoo.dev/mruby/ruby/z... There's this common issue if you are on stage, you don't end up with many photos of yourself on stage...
yujiyokoo.dev
Kansai RubyKaigi 09 and back to Hakodate
Kansai RubyKaigi 09 and back to Hakodate
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 06/08/2026
Went to a nice cider place called Cidernaut in Shibuya with a friend. Really nice place with a large range of ciders in tap
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 03/08/2026
I’m at #rk_designers - RubyKaigi
Designers 国際カンファレンスに“いろどり”を加えるデザインたち
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 01/08/2026
Found a tiny bit of Australia in Setagaya!
A meat pie with a can of Coopers Pale Ale
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 07/09/2025
Watching lunar eclipse. Too bad my mobile’s camera can’t capture it!
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 06/09/2025
So it’s been announced. I’ll be one of the keynote speakers at Fukuoka Rubyist Kaigi 05! Hope to see you there 😃
011
Reposted by @yujiyokoo.bsky.social
甚六 @jinroq.bsky.social · 05/09/2025
福岡 Rubyist会議 05 の公式サイトをオープンしました! あわせてキーノートスピーカーも公開しました。今回のキーノートスピーカーは @yujiyokoo.bsky.social と @yancya.club のご両名です! #fukuokark05 regional.rubykaigi.org/fukuoka05/
regional.rubykaigi.org
福岡Rubyist会議05 | Fukuoka RubyistKaigi 05
2026.02.28(Sat) 10:00 - 18:00 開催予定! 福岡Rubyist会議05公式サイトです。
022
Reposted by @yujiyokoo.bsky.social
Dan Draper @handle.invalid · 16/06/2025
Is AES-128 still safe in a quantum world? Sort of — but not enough. Quantum computers could run Grover’s algorithm and halve its effective strength. That turns AES-128 into something like "AES-64" — and that's breakable #Cryptography #PostQuantum #QuantumComputing #InfoSec
112
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 09/03/2025
Watching UFC 313 at a pub in Shibuya
010
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 08/03/2025
Pretty crude and slow, with poorly written code at approx 2 frames per second, but somewhat functional mruby block puzzle on Sony PlayStation vimeo.com/1063783533
Screen showing block puzzle game in mruby, on Sony PlayStation
110
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 25/02/2025
Booting my own program on PS1 is such a pain in the arse
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 09/02/2025
Today I went to Setagaya Literary Museum to see Aki Irie and Kaoru Mori’s work. Beautiful art produced by so much work
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 26/01/2025
Simple Ruby code, mruby loader with PSn00bSDK, and emulator output. At least it compiles and runs on the emulator now... hopefully it's a start of something new and interesting #playstation #psx #ps1 #mruby
Ruby code for returning a simple stringC code for running and outputting the result from mrubyEmulator output of the returned string
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 20/01/2025
Reading up on SQL with this book I bought at #TokyoRubyKaigi
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 15/01/2025
I did yet another block puzzle implementation over the new year and the recent long weekend 😃 This time, it's Ruby and curses on the terminal: github.com/yujiyokoo/tu...
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 11/01/2025
Today I went to The National Museum of Emerging Science and Innovation (Miraikan) to see “A Hands-On Model of the Internet” which ends on Monday the 13th. Also checked out “Notre Dame De Paris” exhibition. And, Unicorn Gundam statue while I was in the area
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 13/12/2024
I made it just in time!#RustTokyoAfterNight
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 07/12/2024
Ghost in the Shell SAC 2045 whisky at Liquor Museum Nishi/Shinjuku
010
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 01/12/2024
I supported this with a small donation 🙂 congrant.com/project/kids...
congrant.com
<冬休み緊急食料支援>不足する食料と学習機会を子どもたちへ届けます | 認定特定非営利活動法人キッズドア
年末年始を迎える冬休みの生活苦。 暖房も気安くつけられず、出かける先も居場所もなく、イベントシーズンらしいこともできない。米の価格高騰を筆頭に、物価高の中、子どもたちはいまも苦しい日々を送っています。 こうした子どもたちがこの年末年始を乗り切り、未来へと繋げていくためにも、緊急支援としての「食料支援」と「学習支援」を届けます。 子どもたちの「食」と「心」、そして「未来」を支える支援に、どうかご...
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 30/11/2024
I was at #RustTokyo2024 most of the day today. It was a really fun event and I learnt a lot!
000
yujiyokoo.bsky.social @yujiyokoo.bsky.social · 30/11/2024
Hello, world! 👋
020