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Charles Dodgson (pen name Lewis Carroll) had difficulty remembering numbers, such as dates. He developed a cipher to help him remember numbers by embedding them in couplets or phrases. For example, the couplet “Brass trumpet and brazen bassoon, will speedily mark you a tune” encodes the specific gravity of brass (8.39) in the last four consonants: r k t n (y is treated as a vowel). In this article, we describe the cipher, present online too....
Charles Dodgson (pen name Lewis Carroll) had difficulty remembering numbers, such as dates. He developed a cipher to help him remember numbers by embedding them in couplets or phrases. For example, the couplet “Brass trumpet and brazen bassoon, will speedily mark you a tune” encodes the specific gravity of brass (8.39) in the last four consonants: r k t n (y is treated as a vowel). In this article, we describe the cipher, present online too....
I read 30 books or 8365 pages in 2024, a solid improvement over last year ’s, and many of those books were excellent. Lolita by Vladimir Nabokov was outstanding, Marcus Aurelius’ Meditations was incredible, and then there’s Family Lexicon and The garden of Finzi-Contini , and many others were close to that league. Yeah, color me satisfied. The usual scoring system applies: One star means a book is meh. Two stars mean a book is p..
A common mistake in system design interviews is to underestimate a low but steady write rate. Many candidates quickly dismiss a write rate of 1 request per second as insignificant, but this isn’t always the case—especially in a startup environment where growth is measured week-over-week. Small write volumes can accumulate significantly over time and cause all sorts of downstream problems. During a major Postgres version upgrade, Retool fou....
I was so intimidated to go at first, but it is in fact easy and fun to start playing beginner volleyball in New York. The people are so friendly and welcoming that it has been easy to keep playing consistently every week since I started for the first time this August. It's been a great workout and a great way to make friends! The two platforms I've used to find volleyball games are Goodrec and New York Urban . While these platforms may....
A while back an update went live that, with some caveats, changes the time it takes for an update on a website to reflect in the search engine index from up to 2 months to 1-2 days. Conditions being if the website has an RSS or Atom feed. The big crawl job takes about two months, and is run partition by partition, meaning there’s typically a slice of the index that is two months stale at any given point in time. To help compensate for thi..
A common mistake in system design interviews is to underestimate a low but steady write rate. Many candidates quickly dismiss a write rate of 1 request per second as insignificant, but this isn’t always the case—especially in a startup environment where growth is measured week-over-week. Small write volumes can accumulate significantly over time and cause all sorts of downstream problems. During a major Postgres version upgrade, Retool fou....
I created a small script to play all (20) .mp3 songs from the /music/ with Elixir. I think I'm in love with this syntax, and I love the pattern matching thing, which I didn't used in this stupid script. elixir #!/usr/bin/env elixir Mix.install([ { :floki , "~> 0.37.0" }, { :req , "~> 0.5.5" } ]) songs = Req.get!( " https://lainchan.org/music/ " ) |> Map.get( :body ) |> Floki.parse() |> Floki.find( "a" ) |..
Insights from a podcast about the impact of RISC vs CISC in chip production and how giants like Apple and Amazon have shaped the landscape.
Twas about 4-6 weeks before Christmas, and all through the math department, not a creature was stirring, not even a plucky young undergrad. Cryptography professors Alice and Bob sat at the elliptically-curved conference table to plan the department's secret Santa. Mallory, the department secretary, had been given the task of organizing last year, and somehow managed to get three gifts while leaving several people disappointed. This year's m..
I write a transactional database for a living, and the best example of why we want transactions is transferring money between accounts. It is ironic, therefore, that there is no such thing as transactions for money transfers in the real world. If you care to know why, go back 200 years and consider how a bank would operate in an environment without instant communication. I would actually recommend doing that, it is a great case study in d....
Is your team on the naughty or nice list? Read on to see if your security practices make the cut this holiday season.
This Christmas, let's explore the alphabet of Java annotations. There are so many, but how many of them truly benefit us?
Sometimes we’re gifted a video game and we don’t know it’ll seriously alter our brain chemistry for the better. We’re hearing from Emi, Matt, Cody, and Scott about what games they’ve played lately and the best games they’ve ever been gifted!
Hello emacs.tv - xenodium.com - 1 year ago - eng
A few days ago, Sacha Chua mentioned how cool it would be to have an Emacs video index like Ruby Video . I mentioned how I had similarly considered a low-tech solution, maybe powered by plain text (bonus points for org mode of course). A little later, Sacha shared a preliminary video feed dump , in org! With that, I wrote the first experiment to render the org feed and emacs.tv was born. emacs.tv is merely a few days ol....
Introduction: In Episode 4 of the Optimizing Databases on Kubernetes series, Jérôme Petazzoni benchmarks the performance of various Kubernetes storage classes, including cloud block storage, ZFS, and Rancher’s Local Path provisioner. This episode dives into the practical aspects of measuring transactions per second, storage efficiency, and durability, offering insights into selecting the right storage solution for database workloads. Throu..
Great learning materials are rare. This is a collection of gems I’ve encountered over the years, presented as a 90’s style web link list…
Some time ago, I found (and used for a while) the htl library. Before that, I was using raw template literals to build HTML, and then setting some element.innerHTML = newString. htl uses template literals, but instead returns a regular DOM Node object. This makes it a lot easier to add even listeners, setting other properties, and overall manipulating the object before appending it to the current document. I was curious to see how it ..
I purchased a Sony a7ii in 2023, while having zero understanding of the basics of cameras and photography. I recall being particularly confused about the exposure triangle , especially how aperture affects the sharpness and the depth of field of an image. After learning the basics and taking around 3500 photos with that camera, I realized its aging technology was limiting my beginner skills. I had enough experience to be able to research ..
I purchased a Sony a7ii in 2023, while having zero understanding of the basics of cameras and photography. I recall being particularly confused about the exposure triangle , especially how aperture affects the sharpness and the depth of field of an image. After learning the basics and taking around 3500 photos with that camera, I realized its aging technology was limiting my beginner skills. I had enough experience to be able to research ..
This post is part of the T4p Series. In the previous post, we discussed creating your custom signal generation pattern. In this post, we will discuss a famous candlestick pattern called the Hammer pattern. We will discuss the pattern, what it is all about, and how it helps traders to earn money. Introduction A Hammer is a single candlestick pattern that forms during a downtrend and is characterized by having a small real body at the top of ....
Several examples of dateFormat including date only, date + 12-hour time, date + 24-hour time, date + timezone, and date + UTC offset.
Several examples of dateFormat including date only, date + 12-hour time, date + 24-hour time, date + timezone, and date + UTC offset.
Several examples of dateFormat including date only, date + 12-hour time, date + 24-hour time, date + timezone, and date + UTC offset.
Nx Highlights 2024 - nx.dev - 1 year ago - eng
Preface In high-performance data platforms, efficiency and scalability are paramount. ClickHouse, renowned for its blazing-fast analytics…
Several examples of dateFormat including date only, date + 12-hour time, date + 24-hour time, date + timezone, and date + UTC offset.
Full RSS feed - paul.kinlan.me - 1 year ago - eng
I love RSS feeds (and ATOM too (and JSONFeed)) but one thing that frustrates me is when a feed doesn't include all of the content. https://full-rss.deno.dev was created to partially solve this. If there is a feed that you really wish was full-content and isn't then you can replace that feed with https://full-rss.deno.dev/?url=https://developer.chrome.com/static/blog/feed.xml and it will get the 10 most recent posts, scrape the linked page a..
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