A place for programmers 程序员自留地
Joined December 2011
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PixelsTech retweeted
We ran 21 access checks under six macOS sandbox profiles. Blocking writes and all network left ~/.ssh readable in every one, and a five-entry credential deny list still missed the GitHub CLI token. importstatic.com/ai/sandbox-…
PixelsTech retweeted
Go 1.27 on an M4 Pro: new() of a 16-byte struct went from 11.1 ns to 5.5 ns. A 96-byte struct: 20.1 ns before, 21.3 ns after. The allocator's new fast path stops dead at 80 bytes. importstatic.com/go/go-1-27-…
PixelsTech retweeted
How Go maps work internally, explained simply. This time it's a video, not a blog post. youtube.com/watch?v=TdtNViWk…
Enjoy, and let me know what you think :)
PixelsTech retweeted
A full-page screenshot is not just a very tall screenshot. The page may lazy-load images, pin headers, animate sections, or recycle off-screen content. Good capture means scrolling deliberately, waiting for the page, and stitching without repeating fixed elements.
PixelsTech retweeted
Ever used Print → Save as PDF and got a blank page, missing images, or half an article? Modern pages are built to scroll and update, not print. Try scrolling once, waiting for lazy images, and hiding sticky UI first. We built PageSaver for the pages that still fight back.
PixelsTech retweeted
Crowdsourced transcript correction is a good idea that collapses into spam almost everywhere it's been tried — including YouTube's own version, which got shut down in 2020. Here's how PandaRecord's community version avoids that failure mode.
pandarecord.com/blog/why-nob…
PixelsTech retweeted
here are some more pixelstech.net/resource/go
PixelsTech retweeted
X videos have no captions button and the post can disappear. Here's how to pull a clean, timestamped transcript from any X video post, what accuracy to expect, and how to edit it against the video.
pandarecord.com/blog/how-to-…
PixelsTech retweeted
This is what motivates us to build PageSaver to help people who need it. Thank you users! #pagesaver
PixelsTech retweeted
After a webpage is saved as PDF, you would sometimes need to use another tool to edit the generated PDF including OCR, compress etc. Now you can directly process the generated PDF right through PageSaver. #pagesaver
PixelsTech retweeted
noCopy is an interesting zero-byte field used in almost every sync struct.
But you can still copy the sync struct, it doesn't stop the compiler, it doesn't stop your program from running.
So what does it actually do? Here :) func25.dev/posts/go-sync-noc…
PixelsTech retweeted
After using PageSaver to generate a PDF, you may want to do more about the PDF such as compress it so that it can be shared easily or watermark it so that others know you own it, we have created a PDF workflow for handling PDF online for free. Try it out. pixelstech.net/application/p…
PixelsTech retweeted
new post on harness engineering for AI self-improvement: lilianweng.github.io/posts/2…
It is hard to forecast how much the future of RSI will rely on harnesses. Likely harness engineering will evolve in the direction of self-improvement and enable auto-research, and, in turn, smarter models keeps harnesses simple.
Even when many harness improvement get eventually internalized into core model, the need to specify goals and context will not disappear.
PixelsTech retweeted
Fed this article to Fable and we created an explore-unknowns skill
It scans your codebase, then interviews you one question at a time to close the known unknowns
Then sweeps for the unknown unknowns you never thought of
Now part of my software factory: github.com/dzhng/skills
PixelsTech retweeted
someone asked Beej how sockets work in C. he got tired of explaining it. so in 1995 he put it all online.
it's been the definitive socket programming guide for 30 years.
it covers everything: TCP, UDP, IPv4, IPv6, non-blocking I/O, select(), poll().
graduate OS courses worldwide assign it. it's funnier than any technical book has a right to be.
it's free and always will be.
