Top Posts for February 6, 2018

SpaceX’s Falcon Heavy successfully launches

Summary: From here, the rocket’s payload (read: the aforementioned Tesla, pictured below as the nosecone seperates) will pass through the Van Allen belt — a zone of charged particles and extreme radiation surrounding Earth.

Keywords: spacex, rocket, payload, falcon, space

Full article on | 2617 Points and 772 Comments

Grammarly shared its tokens with all websites

Summary: Description #1 (, Feb 2 2018) Description #2 (, Yesterday) Description #3 (, Today)

Keywords: taviso, description, yesterday, today, feb

Full article on | 455 Points and 156 Comments

Perspective: Streaming pivot visualization via WebAssembly

Summary: A streaming data visualization engine for Javascript, Perspective makes it simple to build real-time & user configurable analytics entirely in the browser.

Keywords: perspective, browser, engine, web, component

Full article on | 356 Points and 124 Comments

Mozilla announces an open gateway for the internet of things

Summary: Second, Mozilla is working on a Web of Things Gateway so that you can replace your Amazon Echo, Philips Hue hub, Apple TV and Google Home with an open device.

Keywords: things, devices, mozilla, connected, web

Full article on | 355 Points and 176 Comments

In Baltimore, Brazen Officers Took Every Chance to Rob and Cheat

Summary: Defense lawyers say the two detectives on trial were not involved in the unit’s most egregious crimes, and have questioned the motivations of the parade of disgraced officers and convicted drug dealers who have testified against them.

Keywords: gun, officers, unit, detectives, police

Full article on | 309 Points and 189 Comments

Show HN: Cross-platform desktop applications with PyQT

Summary: The next steps are to let you create an installer for Ubuntu (Linux), then code signing, then automatic updates.

Keywords: feb, project, open, windows, code

Full article on | 281 Points and 248 Comments

Show HN: Ask a Dev

Summary: We’re not partnered, sanctioned, or affiliated with our public meeting places: we’re just normal customers, so please plan to patronize.

Keywords: ruby, javascript, rails, years, join

Full article on | 261 Points and 98 Comments

Introduction to LLVM [video]

Summary: The goal of this talk is to introduce programmers with C++ experience to tool building with LLVM.

Keywords: llvm, expectation, provided, building, examples

Full article on | 254 Points and 21 Comments

The marbled crayfish is a mutant species that clones itself

Summary: In their new study, published in the journal Nature Ecology and Evolution, the researchers show that the marbled crayfish has spread across Madagascar at an astonishing pace, across an area the size of Indiana in about a decade.

Keywords: crayfish, marbled, species, lyko, genome

Full article on | 253 Points and 58 Comments

Snap Revenue Surges 72% on User Growth, Advertising Gains

Summary: The numbers on Tuesday may help some on Wall Street revisit their original thesis on the company: that Snapchat, already popular with young people, has enough growth potential to carve out a solid slice of a digital ad market dominated by Facebook and Google.

Keywords: company, snap, million, analysts, snapchat

Full article on | 233 Points and 96 Comments

I reported a critical bug and now they started a police investigation on me

Full article on | 231 Points and 72 Comments

The outdoor community made water filtration a must for a reason

Summary: While most giardia, e. coli, cyrptosporideum, and waterborne pathogens induce fairly minor illnesses in adults, the effects can be much more severe if the infected person suffers from immunosuppression, is very young or old, or, as with my friend, is simply unlucky.

Keywords: water, study, welch, linck, sources

Full article on | 229 Points and 126 Comments

Reason ML toolchain

Summary: It was created by the same people that brought us React.js as a way to improve how front end developers write code by avoiding lots of bugs caused by Javascript not having a sound type system.

Keywords: reasonml, ocaml, bucklescript, js, refmt

Full article on | 225 Points and 97 Comments

How Rust Is Tilde’s Competitive Advantage [pdf]

Full article on | 194 Points and 98 Comments

Watch the SpaceX Falcon Heavy Rocket Launch Today

Summary: “It basically gives them another tool in their toolbox for accomplishing the space community’s goals,” said Phil Larson, an assistant dean at the University of Colorado’s engineering school who previously worked as a senior manager of communications and corporate projects at SpaceX.

Keywords: spacex, heavy, rocket, falcon, musk

Full article on | 190 Points and 124 Comments

An Introduction to Cache-Oblivious Data Structures

Summary: It’s pretty easy to see why this algorithm is cache optimal: Assuming the array is contiguous in memory, we’ll make use of every byte from every block we read, except for the ends.

Keywords: tree, memory, block, read, blocks

Full article on | 187 Points and 26 Comments

Do you need a blockchain?

Full article on | 186 Points and 179 Comments

What I learned from watching my iPad’s slow death

Summary: Credit Illustration by Jon Han Fifteen years ago, before I would replace a desktop computer or a laptop, it would have quite conspicuously broken down, its fans getting louder, its spinning hard drive grinding to a halt.

Keywords: ipad, device, apple, screen, years

Full article on | 179 Points and 257 Comments

SpaceX Falcon Heavy launch webcast (live 12:45 PST)

Full article on | 173 Points and 68 Comments

SpaceX successfully deploys the Star man

Summary: Media captionA car, a golf ball, a pie… the oddities sent into space over the years.Having such a large and powerful rocket should open up some fascinating new possibilities for Mr Musk and his SpaceX company.

Keywords: falcon, rocket, musk, heavy, media

Full article on | 166 Points and 24 Comments

C++ Coroutine Theory (2017)

Summary: In this series I will cover how the underlying mechanics of C++ Coroutines work as well as show how they can be used to build useful higher-level abstractions such as those provided by the cppcoro library.

Keywords: coroutine, frame, function, operation, execution

Full article on | 166 Points and 44 Comments

Apple Backs AV1: What Does This Mean for the Future of Video Codecs

Summary: Earlier this month, Apple joined the Alliance for Open Media (AOM), which is working on the next-generation AV1 video compression standard.

Keywords: hevc, apple, patent, aom, devices

Full article on | 165 Points and 74 Comments

Flyover video of Jupiter’s Europa

Summary: NASA engineer Kevin Gill stitched together images from two 1998 observations of Europa by the Galileo spacecraft to create this super smooth flyover video of the icy Jovian moon.

Keywords: images, resolution, mercator, moon, kilometers

Full article on | 157 Points and 16 Comments

Apple’s Failure to Check Kill Syscall Privilege “Not a Security Issue”

Summary: Re: How to safely kill all processes owned by a user on macOS Subject : Re: How to safely kill all processes owned by a user on macOS From: Daniel Peebles < email@hidden > Date: Wed, 18 Oct 2017 13:08:24 +0000 Authentication-results: symauth.service.identifier; dkim=pass header.s=20161025 header.v=1 header.a=rsa-sha256 Delivered-to: email@hidden Delivered-to: email@hidden Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=b9d+OAjaUuRdEGzloJx5g2oAax2HIKHcFyhmH7WP71I=; b=OwZo2bKqGpCGF/SFZWOnONN46B7srndbHQzufyUH46oDOAxymZaXnEhJVyDCv+hrOa 89++7DnZMvJ1I6w2MLPdvI2n74dbcZZmoIBemnq4UJRiMpRB5uf7gQ9y7zy4I1ucumyI VDHfVfpfZFN57ch7we8yn7d0Z4tSeHXjyEd/5nq4aGy3wIXLrBajeYOVylEH8SASvWiI CBCzs3Nnqx00Edz7L4leqqppjPcRgVqLlMoEpSdAkLOnhA3HZVbHnv4qGzDIT+N2ezAk Ul5NsBH+3gjif0yfvZMQT64q9+NSdGvAA9CcheJuP/SAolfd0nfIzPzeCKavYj421Fcn hROQ==

Keywords: processes, hidden, kill, owned, safely

Full article on | 156 Points and 55 Comments

WrkRiot CEO Pleads Guilty to Defrauding Employees

Summary: As part of his guilty plea, Choi admitted that while attempting to recruit potential employees, he made false and misleading statements about various topics, including his educational and professional history, and the amount of his wealth.

Keywords: company, choi, attorney, employees, california

Full article on | 144 Points and 50 Comments

Interpreting a market plunge

Summary: It might not wish to be seen to be beholden to markets: willing to slash rates or take other action the moment stock indexes slip (particularly if the personnel making monetary-policy decisions are relatively new to their roles and keen to establish their independence).

Keywords: economy, stock, mood, past, central

Full article on | 140 Points and 147 Comments

Eloquent JavaScript 3rd Edition Draft

Summary: The first two lines give two memory locations their starting values: total will be used to build up the result of the computation, and count will keep track of the number that we are currently looking at.

Keywords: javascript, program, language, programming, programs

Full article on | 139 Points and 8 Comments

Deploying a ReasonML React app with Docker

Summary: Razzle is a tool which abstracts all the Server Side Rendering configuraton, it has an extension which works with ReasonReact as well: .

Keywords: reasonml, app, reasonreact, hasura, build

Full article on | 130 Points and 41 Comments

People who are less willing to apologize also tend to be less self-compassionate

Summary: On top of confirming that self-compassionate people tend to apologize more often than those who are overwhelmed by the shame of their mistakes, these findings also provide key insights into the psychological processes behind the behaviors that can make or break a relationship.

Keywords: people, apologize, relationship, mistakes, shame

Full article on | 126 Points and 121 Comments

CloudBees acquires Codeship as devops consolidates

Summary: The move underscores a trend of smaller vendors in the world of services for developers getting snapped up by larger players, Labrouey noted, in part to improve momentum and business growth.

Keywords: cloudbees, developers, company, today, codeship

Full article on | 123 Points and 34 Comments

6.4 Earthquake hits Taiwan

Full article on | 120 Points and 53 Comments

Is-Vegan – Helps you to find out which food ingredients are vegan

Summary: We created the blacklist keeping in mind that veganism in dietary terms, it denotes the practice of dispensing with all products derived wholly or partly from animals.

Keywords: feb, ingredients, added, list, test

Full article on | 120 Points and 182 Comments

Oceans and Lakes Are Becoming ‘Dead Zones’ Again

Summary: Matters are even more urgent than before, because scientists have discovered that some cyanobacteria ( Microcystis and Planktothrix , which dominate in the Western Basin and Sandusky Bay) produce liver toxins that the World Health Organization considers dangerous even in minute concentrations.

Keywords: lake, water, erie, lakes, oceans

Full article on | 118 Points and 24 Comments

Bret Victor – Inventing on Principle (2012) [video]

Full article on | 118 Points and 23 Comments

How to Design a New Chip on a Budget

Summary: But stories I’ve heard suggest that a simple ASIC (say one that is a few square millimeters in size, fabricated using the 250-nm technology node) might cost a few thousand bucks for a couple dozen samples.

Keywords: design, asic, fpgas, chip, cost

Full article on | 113 Points and 48 Comments

Mixpanel analytics accidentally slurped up passwords

Summary: Upon investigating further, we realized that, because of the way we had implemented Autotrack when it launched in August 2016, this could happen in other scenarios where browser plugins (such as the 1Password password manager) and website frameworks place sensitive data into form element attributes.

Keywords: mixpanel, data, sdk, issue, autotrack

Full article on | 102 Points and 63 Comments

Would College Students Retain More If Professors Dialed Back the Pace?

Summary: In a case of literary serendipity, right after I read Beck’s piece, I stumbled onto an essay called “The Simplest Course I Ever Taught” in The Chronicle of Higher Education by Paula Marantz Cohen , dean of the Pennoni Honors College and professor of English at Drexel University.

Keywords: read, teaching, students, cohen, college

Full article on | 101 Points and 104 Comments

Newly Discovered Form of Water Ice Is ‘Really Strange’

Summary: Dr. Jeanloz said the agreement between experiment and prediction offered promise that scientists are beginning to understand the basic physics of how molecules in general behave under changing temperatures and pressures well enough for practical use.

Keywords: ice, superionic, water, scientists, ions

Full article on | 97 Points and 21 Comments

Napoleon’s Equine Strategy in 1813 (2013)

Summary: [28] To achieve this, Napoléon’s orderly officer, Baron d’Hautpoul, was authorised on 20 March 1813 to reconnoitre Mainz and it’s environs to assess the number of suitable draught horses in private hands, together with the provision of harness, saddles and equipment.

Keywords: horses, napoléon, fol, army, men

Full article on | 85 Points and 13 Comments

Capsule networks can overcome some shortcomings of CNNs

Summary: See this great post by S. Chilamkurthy to see how diverse and complex the architectures for semantic segmentation can get.CapsNets were first introduced in 2011 by Geoffrey Hinton, et al., in a paper called Transforming Autoencoders , but it was only a few months ago, in November 2017, that Sara Sabour, Nicholas Frosst, and Geoffrey Hinton published a paper called Dynamic Routing between Capsules , where they introduced a CapsNet architecture that reached state-of-the-art performance on MNIST (the famous data set of handwritten digit images), and got considerably better results than CNNs on MultiMNIST (a variant with overlapping pairs of different digits).

Keywords: capsule, figure, capsules, boat, rectangle

Full article on | 84 Points and 0 Comments

Show HN: Tet – A todo app that deletes your tasks at the end of the day

Full article on | 79 Points and 45 Comments

UK Hacker Won’t Be Extradited to the US Because American Prisons Are ‘Medieval’

Summary: Love, who holds dual citizenship in the UK and Finland but resides in Britain, was arrested in 2013 for allegedly hacking into sensitive computer systems in the US, including those of the FBI, NASA, and the US Army.

Keywords: love, computer, lauri, uk, extradition

Full article on | 79 Points and 13 Comments

A Driver’s Suicide Reveals the Dark Side of the Gig Economy

Summary: Continue reading the main story On Monday morning, Doug Schifter, a livery driver in his early 60s, killed himself with a shotgun in front of City Hall in Lower Manhattan, having written a lengthy Facebook post several hours earlier laying out the structural cruelties that had left him in such dire circumstance.

Keywords: drivers, york, taxi, city, schifter

Full article on | 77 Points and 117 Comments

Mexicans Afraid of Being in America Create Farm Worker Shortage – Crops Suffer

Summary: To make the jobs more attractive, farmers are offering salaries above minimum wage, along with paid time off and 401(k) plans, but even that’s not proving enough.

Keywords: shortage, farmers, prices, california, impact

Full article on | 68 Points and 86 Comments

Double Pendulum Visualization

Summary: I’ve been playing around with the Hamiltonian Physics Solver I wrote using TensorFlow to create some visualizations of the double pendulum system.

Keywords: pendulum, flip, chaotic, double, initial

Full article on | 68 Points and 11 Comments

Show HN: Browser extension to read HN comments for any url, in ClojureScript

Summary: Looped In is a browser extension that displays Hacker News comments for the current webpage in a sidebar.

Keywords: feb, license, version, looped, changelog

Full article on | 67 Points and 69 Comments

How to learn Deep Learning in 6 months

Summary: And in about 26 weeks since the time you started, and if you followed all of the above religiously, you will have a solid foundation in deep learning.

Keywords: learning, deep, time, learn, foundation

Full article on | 66 Points and 7 Comments

Venus flytraps don’t eat the insects that pollinate them

Summary: “These findings answer basic questions about the ecology of Venus flytraps, which is important for understanding how to preserve a plant that is native to such a small, threatened ecosystem,” says Elsa Youngsteadt, a research associate at North Carolina State University and lead author of a paper on the work.

Keywords: venus, flytrap, flytraps, plant, species

Full article on | 62 Points and 11 Comments

Java 9 has six weeks to live

Summary: If you care about security updates, you need to be prepared to switch to Java 10 shortly after it is release on 20th March.

Keywords: java, release, security, updates, obsolete

Full article on | 59 Points and 19 Comments

As Bitcoin Bubble Loses Air, Frauds and Flaws Rise to Surface

Summary: A new virtual currency, Proof of Weak Hands Coin, whose creators referred to it as a Ponzi scheme on Twitter and use a pyramid as a website logo, raised $800,000 before hackers got into its systems last week and drained its funds.

Keywords: virtual, currency, currencies, bitcoin, coin

Full article on | 59 Points and 23 Comments

Walmart has acquired VR startup Spatialand

Summary: But in an interview, Finnegan said her group is focused on retail experiences that may not go mainstream for five to 10 years, and she believes virtual reality may fit into that bucket.

Keywords: reality, virtual, walmart, spatialand, company

Full article on | 57 Points and 20 Comments

Live Views of Starman

Full article on | 57 Points and 18 Comments

Falcon Heavy Demonstration Mission [pdf]

Full article on | 54 Points and 30 Comments