Livebook: A collaborative and interactive code notebook for Elixir

https://dashbit.co/images/posts/2021/livebook.png
We are glad to announce Livebook, an open source web application for writing interactive and collaborative code notebooks in Elixir and implemented with Phoenix LiveView. Livebook is an important step in our journey to enable the Erlang VM and its ...

Paternoster Lift

https://upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Paternoster.png/170px-Paternoster.png
Jump to navigation Jump to search A paternoster ( / ˈ p eɪ t ər ˈ n ɒ s t ər/, / ˈ p ɑː-/, or / ˈ p æ-/) or paternoster lift is a passenger elevatorwhich consists of a chain of open compartments (each usually designed for two persons) ...

Internet Search Tips

https://www.gwern.net/images/google/googlescholar-search-highlightfulltextlink.png
Over time, I developed a certain google-fu and expertise in finding references, papers, and books online. Some of these tricks are not well-known, like checking the Internet Archive (IA) for books. I try to write down my search workflow, and ...

Statement by UEFA, FA, Premier League, RFEF, LaLiga, FIGC and Lega Serie A

https://editorial.uefa.com/resources/0268-12121d209df6-6671dacfd717-1000/uefa_logo.jpeg
Europe's football website, UEFA.com, is the official site of UEFA, the Union of European Football Associations, and the governing body of football in Europe. UEFA organises some of the most famous and prestigious football competitions on the European continent including the UEFA Champions...

Proposal: Treat FLoC as a security concern

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Why is this bad? As the Electronic Frontier Foundation explains in their post “ Google’s FLoC is a terrible idea“, placing people in groups based on their browsing habits is likely to facilitate employment, housing and other types of discrimination, ...

A Universal I/O Abstraction for C++ (2020)

https://cor3ntin.github.io/posts/iouring/banner.jpg
This article is the sequel to A Universal Async Abstraction for C++, in which I talk about the Executor proposal targeting C++23. Quite a bit happened since then. SG-1 1, the study group charged of all things concurrency and parallelism made forward ...

Show HN: Farolero – Common Lisp style-conditions and restarts for Clojure

https://raw.githubusercontent.com/IGJoshua/farolero/master/img/farolero.jpg
Historical Spanish, meaning "lamplighter", e.g. "A lamplighter claimed to have seen Jack the Ripper on this street last night." Error handling in Clojure is not yet a solved problem. Each method of handling errors commonly used comes ...

B. Traven

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Jump to navigation Jump to search B. Traven ( [ˈbeː ˈtʁaːvn̩]; Bruno Traven in some accounts) was the pen nameof a presumably German novelist, whose real name, nationality, date and place of birth and details of biography are all subject to ...

Public-ownership rental as a third option to renting or owning a house

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A of itself as an “ ownership society. ”Nearly two-thirds of U.S. households own their home, and the idea of renting is inseparable from ownership in the U.S. context. Renting is given meaning by its relationship to ownership —it ’s how you live if you ...

Mac Plus made of legos at 1:1 scale

https://ideascdn.lego.com/community/_shared/lego_ci_new/img/headlogo@2x.png
Building Techniques: How much skill do you think the creator of this MOC has, in terms of building technique? Your feedback is only shown to the creator as well as yourself. It is not available for other users to see. The creator won't see your ...

Show HN: Aidmin – Web-based database GUI

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Aidmin is still in early development, and we'd love to get your feedback on which features are important to you. If you come across any bugs, please open an issueagainst this repository and we'll be sure to address them in a timely ...

SketchDeck (YC W14) is hiring engineers to launch a new product

https://www.workable.com/assets/facebook-preview.png
SketchDeck has grown it's software powered design service over the last 6 years to a profitable agency serving some of the biggest brands around the world. During this time we've learned what is needed to provide significant value to agencies w...

A smartphone with a fluid lens

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S are usually laden with serious amounts of serious kit, especially multiple lenses. The paparazzi use zoom lenses to get a telescopic view of their subjects. Mid-range lenses are well-suited to street-scenes and portraits. Wide-angle lenses are good for ...

Making a Concave Mirror Using 15th Century Technology (2018)

https://wp.optics.arizona.edu/falco/wp-content/uploads/sites/57/2016/08/Concave1.gif
I decided to see if I could make a suitable concave mirror using only technology that would have been available in the 15th century, with the goal of producing a “mirror lens ”of the specifications we calculated from Lotto ’s painting (i.e. ~54 cm ...

Reverse-engineering a vintage comparator chip

https://static.righto.com/images/comparator/die-labeled-w600.jpg
I recently saw an interesting die photo of an unknown chip on Twitter, so I did some analysis of it. Looking at the circuitry inside, the chip appears to be four comparators, probably in the ECL (Emitter Coupled Logic) family. This is a quick ...

Internal Consistency in Streaming Systems

https://d33wubrfki0l68.cloudfront.net/10a968bf801826aa8554d4a13cd185c22f68411b/62b47/writing/internal-consistency-in-streaming-systems/flink-original-timeseries.png
Disclaimer: I used to work for Materialize which is one of the systems being compared in this post. The core message of this post is that intuitions from distributed key-value databases don't carry over well to systems which do complex computation. ...

Questions to ask in a job interview that reveal company culture

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You are in the last five minutes of the job interview, and the interviewer asks: “ What questions do you have?” Time is limited, so you ask the question you think will be most helpful: “What is the culture like here?”

Ask HN: Does anyone else find the AWS Lambda developer experience frustrating?

Hey HN, I've been using AWS lambda a bit recently, mostly as a way to glue together various bits and pieces. Maybe I'm doing this wrong but does anyone else find the experience to be really frustrating?

Novel hydrogels can safely remove graffiti from vandalized street art

https://cdn.arstechnica.net/wp-content/uploads/2021/04/graffiti1-800x533.jpg
Mention the word "graffiti," and many people's thoughts immediately turn to vandalism in the form of defacement of property. But there is also graffiti that rises above such negative connotationsand qualifies as bona fide street art. Think ...

Product-focused and sales-focused companies

https://itamargilad.com/wp-content/uploads/2021/04/rowing-scaled.jpg
A common complaint I hear from product folk is that management is too “sales-driven ”. It is a common ailment indeed, but I can tell you that the opposite condition, the strictly “product-led ”company, is pretty bad too. Both companies suffer from ...

The Lone Coder

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Wikimedia: wprov

Jump to navigation Jump to search In order to evaluate the effectiveness of social sharing and other similar efforts for Wikimedia projects, a parameter "wprov" can be appended to URLs on a case-by-case basis. This page exists to keep ...

Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

Opt out of VISA marketing Second, disable GPS, and cellphone tower ID reporting (root needed.) So Google can't correlate you with sales records. At the moment, there is no way to disable Google AGPS spying on the stock Android.

The Curious Case of Port 0 (2019) [pdf]

Abstract —In order to direct network traf fic towards applica- tions, transport layer protocols such as TCP and UDP add the notion of a port number. A share of these numbers is registered for well-known services such as a web or mail, while some is left ...

Two people killed in fiery Tesla crash with no one driving

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HOUSTON – Two men are dead after a Tesla traveling in Spring crashed into a tree and no one was driving the vehicle, officials say. The crash happened at 11:25 p.m. in the Carlton Woods subdivision near The Woodlands. The car burst into flames after hitting ...

How Developers Choose Names

https://static.arxiv.org/static/browse/0.3.2.6/images/arxiv-logo.png
Download PDF Abstract:The names of variables and functions serve as implicit documentation and are instrumental for program comprehension. But choosing good meaningful names is hard. We perform a sequence of experiments in which a total of 334 subjects ...

Reducing Rust Incremental Compilation Times on macOS

https://jakedeichert.com/images/synthwave-jake-deichert.png
I may be late to the game, but I just read the Rust 1.51 release notes and noticed a new Cargo option that can help improve macOS compilation times. After upgrading and enabling the option, my incremental dev rebuilds went from ~14s to ~4s!

Rediscovering Hamming Code

https://blog.digital-horror.com/content/images/2021/04/lorem-ipsum.png
This will arguably be one of the more boring posts on the blog however I figured some keen eyes might extract something useful out of this, even if not technical. Note – if you would like take a closer look at the scratch project, you can find it here ...

Nobody Expects...

You don't have permission to access this resource. Apache/2.4.29 (Ubuntu) Server at www.os2museum.com Port 80

Mathematicians Settle the Erdős Coloring Conjecture

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In the fallof 1972, Vance Faber was a new professor at the University of Colorado. When two influential mathematicians, Paul Erd ős and László Lovász, came for a visit, Faber decided to host a tea party. Erd ős in particular had an international reputation ...