Julien

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Julien

Julien

@j_____________n

Dev with 20+years of experience, Desktop, web & mobile, Working in fintech, Obsessed about AI Check out https://t.co/nxeE3v5DHA, a bookmark manager for Chrome.

France Katılım Ağustos 2014
1.4K Takip Edilen361 Takipçiler
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Julien
Julien@j_____________n·
🚀 Rewind 4.5.1 is out! This update makes bookmark management faster & smoother: ✨ Quick filters for instant search ✨ Better navigation & feedback ✨ Faster previews Update now & rediscover your bookmarks 👇
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Julien
Julien@j_____________n·
@thsottiaux Yesterday evening I literally asked it to "work until 8am". It started a loop, ran lint/test jobs, fixed some bugs, checked every hour if the code changed or if new bugs appeared. It's amazing.
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Tibo@thsottiaux·
With some small tweaks, Codex can work for days on hard tasks. We will release some changes to make this easier to use for everyone. What’s the hardest task you’ve seen GPT-5.5 succeed at?
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Riley Goodside
Riley Goodside@goodside·
@RCallsign It’s post-slop. This is “Iron Man beats up Walter White” for people 1SD smarter.
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Riley Goodside
Riley Goodside@goodside·
ChatGPT Images 2.0 generates a boss fight from a 16-bit JRPG in the style of FF6 but they’re in a Chipotle and the boss is just the board position from Byrne vs. Fischer (1956) right after Byrne captures Fischer’s queen:
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Julien
Julien@j_____________n·
When Codex displays its final message, ask it "Is the implementation complete?". You'd be surprised how often it just stops halfway, never assume it has finished until it says so.
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Julien
Julien@j_____________n·
"discuss" is a magic word for Codex / Claude Code. Try adding it at the end of your prompts to make sure you're on the same page before coding anything.
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Peter Gostev
Peter Gostev@petergostev·
I've had the pleasure of testing the GPT-Image-2 for the last week or so, it is truly an amazing model, few highlights: - Identity is mind blowing (I look identical to this) - Level of knowledge is very high (e.g. the meme) - I LOVE the 'candid' shots (e.g. Merlin Monroe coming out of a shop) - The realism is insane (VHS footage of the Berlin wall)
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Ibelick
Ibelick@Ibelick·
introducing mesurer a tiny tool to measure spacing and align your UI on localhost npm i mesurer
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orph
orph@orphcorp·
this is excellent >GitLab founder diagnosed with rare cancer (osteosarcoma) >standard care works but cancer comes back later >medical team says there's not much else to do >"It became my own job to keep myself alive. Nobody else was going to do it for me at this point" >starts researching, assembles his own medical team, uses AI for deep research >“I’ll talk to anyone, I’ll go anywhere, and I can be there anytime" to collect information >does as many diagnostic tests as he can find as often as he can (maximal diagnostics) >develops his own therapeutic ladder with repurposed drugs, personalized medicine, etc >Sid’s cancer currently in remission
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Sebastian Caliri@SebastianCaliri

The full deck on Sid’s cancer approach is here: sytse.com/cancer/ Worth a read. Raw data for download is also available and linked in the deck

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Julien
Julien@j_____________n·
@webprofusion @SebAaltonen I was going to ask this, I'm curious if OP used Skill creator to create skills from the existing codebase first (it's never too late).
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Christopher Cook
Christopher Cook@webprofusion·
@SebAaltonen Are you updating a skill doc as you go? The various harnesses have memory systems now that try to capture these prefs but a good doc that just says do this not that seems to work fairly well.
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Sebastian Aaltonen
Sebastian Aaltonen@SebAaltonen·
List of all pessimizations Codex did while porting our old render pipe to new code base: - 28 byte -> 56 byte vertex format (full fp32 instead of compact packed format) - Full fp32 shader ALU (no double rate fp16) - No packed/fp16 varyings (BW waste on mobile) - Each draw call has camera matrices. (bind group 0 shared data bound once per-pass before) - 4x4 matrices instead of 4x3 affine matrices (25% fatter) - Safe normalize everywhere - RGBA16F IBL instead of RG11B10F (2x fatter, half rate filter + doesn't DCC on all mobile GPUs) I instructed Codex to fix each of these issues when I found them and it did a pretty good job. But sometimes did stupid things like using fp16 for UV varyings (not enough precision). Have to review carefully.
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Julien
Julien@j_____________n·
@thsottiaux Let me update any previous message, not just the last one.
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Tibo@thsottiaux·
What are we consistently getting wrong with codex that you wish we would improve / fix?
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Julien
Julien@j_____________n·
@robj3d3 Focus (use-focus.com) is what you're looking for: it runs 100% locally to transcribe and lets you prompt-search the best moments from all the shots in your videos to generate a rough cut XML (compatible with Davinci Resolve).
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Rob Hallam
Rob Hallam@robj3d3·
How is there still not a good vibe video editing software??? If there is, please tell me.
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Tibo@thsottiaux·
With GPT-5.4 out. What should Codex ship or improve next?
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Soren
Soren@sorenblank·
`tabular-nums` should be the default for any number that updates ( timers, counters, prices, percentages, scores, live data etc ). you can enable this tnum OpenType feature using the CSS property `font-variant-numeric`. .tabular-nums { font-variant-numeric: tabular-nums; }
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ian
ian@shaoruu·
1. go to chrome dev tools 2. in memory tab, take a snapshot & download 3. drop it into @cursor_ai @cursor_ai will write python scripts to analyze the snapshot and point out what's making your website feel sluggish
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Peter Yang
Peter Yang@petergyang·
I've been chatting with some great AI native founders and companies (@FactoryAI, @tryRamp, @Linear). The way they build products is just completely different. Regardless of function (eng, PM, design, sales), they understand that their role is to onboard and delegate work to their AI agents/skills/etc. The job of the human becomes to give AI the right context, systems, and feedback loops to do its best work and to apply human taste along the way. It's just a completely different paradigm and 99% of tech workers and companies haven't realized this yet.
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Chubby♨️
Chubby♨️@kimmonismus·
AI first policy at openai
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Greg Brockman@gdb

Software development is undergoing a renaissance in front of our eyes. If you haven't used the tools recently, you likely are underestimating what you're missing. Since December, there's been a step function improvement in what tools like Codex can do. Some great engineers at OpenAI yesterday told me that their job has fundamentally changed since December. Prior to then, they could use Codex for unit tests; now it writes essentially all the code and does a great deal of their operations and debugging. Not everyone has yet made that leap, but it's usually because of factors besides the capability of the model. Every company faces the same opportunity now, and navigating it well — just like with cloud computing or the Internet — requires careful thought. This post shares how OpenAI is currently approaching retooling our teams towards agentic software development. We're still learning and iterating, but here's how we're thinking about it right now: As a first step, by March 31st, we're aiming that: (1) For any technical task, the tool of first resort for humans is interacting with an agent rather than using an editor or terminal. (2) The default way humans utilize agents is explicitly evaluated as safe, but also productive enough that most workflows do not need additional permissions. In order to get there, here's what we recommended to the team a few weeks ago: 1. Take the time to try out the tools. The tools do sell themselves — many people have had amazing experiences with 5.2 in Codex, after having churned from codex web a few months ago. But many people are also so busy they haven't had a chance to try Codex yet or got stuck thinking "is there any way it could do X" rather than just trying. - Designate an "agents captain" for your team — the primary person responsible for thinking about how agents can be brought into the teams' workflow. - Share experiences or questions in a few designated internal channels - Take a day for a company-wide Codex hackathon 2. Create skills and AGENTS[.md]. - Create and maintain an AGENTS[.md] for any project you work on; update the AGENTS[.md] whenever the agent does something wrong or struggles with a task. - Write skills for anything that you get Codex to do, and commit it to the skills directory in a shared repository 3. Inventory and make accessible any internal tools. - Maintain a list of tools that your team relies on, and make sure someone takes point on making it agent-accessible (such as via a CLI or MCP server). 4. Structure codebases to be agent-first. With the models changing so fast, this is still somewhat untrodden ground, and will require some exploration. - Write tests which are quick to run, and create high-quality interfaces between components. 5. Say no to slop. Managing AI generated code at scale is an emerging problem, and will require new processes and conventions to keep code quality high - Ensure that some human is accountable for any code that gets merged. As a code reviewer, maintain at least the same bar as you would for human-written code, and make sure the author understands what they're submitting. 6. Work on basic infra. There's a lot of room for everyone to build basic infrastructure, which can be guided by internal user feedback. The core tools are getting a lot better and more usable, but there's a lot of infrastructure that currently go around the tools, such as observability, tracking not just the committed code but the agent trajectories that led to them, and central management of the tools that agents are able to use. Overall, adopting tools like Codex is not just a technical but also a deep cultural change, with a lot of downstream implications to figure out. We encourage every manager to drive this with their team, and to think through other action items — for example, per item 5 above, what else can prevent a lot of "functionally-correct but poorly-maintainable code" from creeping into codebases.

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Julien
Julien@j_____________n·
This is why I stopped using @antigravity almost entirely, though I have a Google AI Pro account. “Google Antigravity with higher limits and prioritized traffic”. It used to be a great deal.
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Oliur
Oliur@UltraLinx·
Can you read 900 words per minute? Try it.
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Julien
Julien@j_____________n·
@KevinWeitgenant Thank you for using Rewind, and for the idea! It was not really possible locally and privately at the time I built it, I will look into it!
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Kevin Weitgenant
Kevin Weitgenant@KevinWeitgenant·
@j_____________n I tried it, and I’d like it more if it automatically organized my bookmarks into folders (with the folders created by AI). It could use Gemini Nano for this (built-in web AI).
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Julien
Julien@j_____________n·
🚀 Rewind 4.5.1 is out! This update makes bookmark management faster & smoother: ✨ Quick filters for instant search ✨ Better navigation & feedback ✨ Faster previews Update now & rediscover your bookmarks 👇
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