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New best story on Hacker News: Meta's memo to employees rolling back DEI programs

Meta's memo to employees rolling back DEI programs
793 by bsilvereagle | 1076 comments on Hacker News.


New best story on Hacker News: Ending our third party fact-checking program and moving to Community Notes model

Ending our third party fact-checking program and moving to Community Notes model
841 by impish9208 | 1336 comments on Hacker News.


New best story on Hacker News: Show HN: Tetris in a PDF

Show HN: Tetris in a PDF
976 by ThomasRinsma | 177 comments on Hacker News.
I realized that the PDF engines of modern desktop browsers (PDFium and PDF.js) support JavaScript with enough I/O primitives to make a basic game like Tetris. It was a bit tricky to find a union of features that work in both engines, but in the end it turns out that showing/hiding annotation "fields" works well to make monochrome pixels, and keyboard input can be achieved by typing in a text input box. All in all it's quite janky but a nice reminder of how general purpose PDF scripting can be. The linked PDF is all ASCII so you can just open it in a text editor, or have a look at the source code here: https://ift.tt/wxqidar