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Cassidy
@cassidoo
Making memes, dreams, & software! Sr. Director of Dev Experience at @github. Married to @ijoosong, mom of 2 nerdy babies. She/Her ✝️ Subscribe to my newsletter!
719 Following    184.2K Followers
last week we shipped the final piece to make blocking users seamless across your personal repos. you can now block users directly from Issues, PRs, discussions, and security advisories. keep sharing your wishlist items! we're listening 🚀
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We shipped the ability to attach images and videos to your pr/issues/comments via the gh cli :)
Getting real tired of hearing about AI killing people, ha ha
You started vibe coding. Now everyone keeps telling you to use @github But what does Github actually do? GitHub’s @cassidoo joined us to explain it from the absolute basics and show how it fits into the new AI coding workflow. 🎥 Watch the replay below 👇
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GitHub CLI now lets you attach local images and videos with --attach, so you can add media directly to issues, pull requests, and comments without leaving the command line. See it in action from @madebygps
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🎉 Celebrate GitHub Copilot Day for a chance to win $100 in GitHub Shop credit! To enter: 1. Create something with the GitHub Copilot app or GitHub Copilot CLI 2. Share your creation publicly on X, Instagram, or LinkedIn 3. Include #githubcopilotdaycontest# and #sweepstakes# No purchase necessary. One entry per person. Enter by September 13, 2026, at 11:59 p.m. PT. Three winners will receive $100 in GitHub Shop credit each. 18+ and additional eligibility restrictions apply. See the Official Rules for details. 👇
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👩‍💻 @cassidoo is about to make GitHub make sense. She’s joining The Neuron LIVE to break down GitHub for total beginners, from repos and pull requests to AI coding agents, security, and actually shipping your code. 🔴 Watch here:
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Hi ravenous designers. Here are the iPhone Duo bezels, design kits coming up soon.
Big one today — Tailwind is joining Shopify 🛍️
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this is my audition for presenting at the next WWDC
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We invite you to Forge. At Forge, we will challenge you to make your own frontier. You'll spend the day with the builders, researchers, and technical leaders pushing AI forward. Lin Qiao. Jensen Huang. Jay Parikh. And more. Apply to attend:
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I'm really excited about @fireworksAI_HQ new event: Forge. AI teams are owning the system: models, data, evals, infrastructure, and policies. So they created an event around elevating that. For builders, model shapers, systems engineers, and leaders building production AI. It's free on Nov 3 at Pier 27 in SF, application only.
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Jacob is correct here—we really do earnestly believe AI could kill all humans! I personally think it is >10% within the next decade. I believe Anthropic is trying its best, but we do not yet have a plan to solve alignment for superintelligence and are not clearly on track to.
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With today's Tiny Factory release the Tiny-series has 840+ sprites/tiles and they're all free. Combine them together to create a ton of different games!
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I have spent 23 years documenting the global LED transition of city lighting from space. Across my 4 missions to the ISS, I have photographed every major city on Earth, building a data set of the gradual replacement of sodium vapor lighting with LEDs. The warmer, yellow-orange of gas discharge lamps has been phased out worldwide to multi-colored LEDs, citing energy savings and environmental reasons. Widespread adoption has markedly changed the way our cities look from orbit, and as many have pointed out, how they feel to those on the ground! Here is a collection of the most striking before-and-after photos I have observed:
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Hello, world! My latest newsletter issue is out full of neat articles, some fascinating videos, practice coding, a joke, and mooore:
A personal website should feel like you’ve briefly left the rest of the internet
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I misunderstood HydraFusion at first but it's neat
Same or better quality, much lower cost, no manual model orchestration. That's what we're delivering Project HydraFusion from GitHub. Early tests have been very positive and we're improving hourly. Give it a try and let us know what you think. 👇
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It's back (and better):
The nerfing of Github star history will go down as one of the great tragedies of our time
I misunderstood HydraFusion at first but it's neat
Same or better quality, much lower cost, no manual model orchestration. That's what we're delivering Project HydraFusion from GitHub. Early tests have been very positive and we're improving hourly. Give it a try and let us know what you think. 👇
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