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Details of Alan Turing’s Voice Encryption System

Really interesting piece of cryptographic history : In November 2023, a large cache of his wartime papers—nicknamed the “Bayley papers”—was auctioned in London for almost half a million U.S. dollars. The previously unknown cache contains many sheets in Turing’s own handwriting, telling of his top-secret “Delilah” engineering project from 1943 to 1945. Delilah was Turing’s portable voice-encryption system, named after the biblical deceiver of men. There is also material written by Bayley, often in the form of notes he took while Turing was speaking. It is thanks to Bayley that the papers survived: He kept them until he died in 2020, 66 years after Turing passed away...

2026-07-17 原文 →
AI 资讯

Ask HN: Any AWS billing issues known? Amazon forecast of 3 billion dollars

I receive an AWS Budgets alert that my budget is exceeding the alert threshold. Threshold is 5$. Forecasted amount is listed as $3,005,575,870.47. (Yepp, right, that’s 3 billion dollars.) I haven't even used AWS actively in the last year, but AWS console lists the amount as stated above. No feedback from AWS support yet, but the support AI chat bot says: "Die perfekt gleichmäßigen Tageskosten seit dem 1. Juli deuten stark auf einen Abrechnungs- oder Messfehler hin." ("The perfectly consistent da

2026-07-17 原文 →
开发者

The 10 Levels of Building a Data Grid - My 1 Year Journey of Building a Table.

I wanted to make this post because man...tables are way harder than they look. I documented my 1 year journey of optimizations on a stupid table for my Database GUI. I made everything from scratch like an idiot thinking it'd be easy but oh boy was I wrong... The article goes over all the optimizations I made to make my table render data smoothly without lagging. It goes from what data structures I used and the rendering optimizations I did. I used MongoDB Compass as a baseline since they use AG-Grid for their table and I'm pretty happy that my table feels way smoother than that (In my own testing)! But yeah, I never realized that there would be so much depth in making a performant table. PS. I decided not to use AG-Grid because there were a lot of customizations that I needed to do. I wanted column expansions ( if a field as an object or an array it would open columns to the right of it ). I also wanted an embedded text search where you could search for text within non visible columns (because they were in objects or arrays ) and AG Grid didn't really support that behavior so ..yeah. Anyways have a good read! submitted by /u/Fun-Chicken6946 [link] [留言]

2026-07-17 原文 →