By EditorDavid from Slashdot's ghost-of-PARC department
It's a superlative prototyping language for startups. It's an industrial-strength enterprise language used by businesses both big and small all around the globe... Smalltalk's implementation of the object-oriented paradigm is so excellent that it has influenced an entire generation of OO languages, such as Objective-C, Python, Ruby, CLOS, PHP 5, Perl 6, Erlang, Groovy, Scala, Dart, Swift, and so on. By learning Smalltalk, you'll understand how all of those useful features in today's OO languages came to be.
The article also argues that Smalltalk pioneered just-in-time compilation and virtual machines, the model-view-controller design paradigm, and to a large extent, even test-driven development. But most importantly, Smalltalk's reliance on domain-specific languages makes it "the 'purest' OO, and one of the earliest... It is often said that programming in Smalltalk or Python is rather like Zen; your mind just flows effortlessly with the task. This is the beauty and value of language simplicity, and Smalltalk has this in spades... Smalltalk, by virtue of its object purity and consistency, will give you a profoundly better understanding of object-oriented programming and how to use it to its best effect."Read Replies (0)
By EditorDavid from Slashdot's fast-away-the-old-year-passes department
After surveying over 9,000 Android and iPhone users, Nielsen's "Electronic Mobile Measurement" has calculated the 10 most popular apps of 2016. Interestingly, the #1 and #2 most popular apps of the year were Facebook and Facebook Messenger.
BrianFagioli writes: Facebook holds the first, second, and eighth spots -- remember, the company owns Instagram too. Google has the most number of spots in the top 10, with three, four, five, six, and seven [YouTube, Google Maps, Google Search, Google Play, and Gmail]. Rounding out the bottom of the list is Apple [for Apple Music] and Amazon. Google Play is sort of a weird inclusion, however, as it is the app which downloads other apps -- it probably should have been excluded. Amazon saw insane growth, seeing a massive 43 percent year-over-year gain. Instagram comes in at second place with 36 percent. Facebook Messenger scores the third spot. The biggest surprise is that Apple Music is the top streaming music app, beating apps like Pandora and Spotify...because other music apps had huge head-starts.Read Replies (0)
By EditorDavid from Slashdot's first-contact department
This week the New York Post reported on "powerful radio signals which have been detected repeatedly in the same exact location in space," generating as much energy as the sun does in a whole day, in "the only known instance in which these signals have been found twice in the same location in space." Slashdot reader schwit1 quotes Science Alert:
Back in March, scientists detected 10 powerful bursts of radio signals coming from the same location in space. And now researchers have just picked up six more of the signals seemingly emanating from the same region, far beyond our Milky Way... Currently, the leading hypothesis for the source of the Milky Way's FRB is the cataclysmic collision of two neutron stars, which forms a black hole. The idea is that as this collision happens, huge amounts of short-lived radio energy are blasted out into space. But the repeating nature of these distant signals, all coming from the same place, suggest that can't be the case... the most likely hypothesis at the moment for these outer-galactic FRB is that they're coming from an exotic object such as a young neutron star, that's rotating with enough power to regularly emit the extremely bright pulses.
But the New York Post thinks it's aliens.Read Replies (0)
By EditorDavid from Slashdot's reading-about-rabbits department
Initially rejected by several publishers, "Watership Down" (1972) went on to become one of the best-selling fantasy books of all time. Last Saturday the book's author died peacefully at the age of 96. Long-time Slashdot reader haruchai remembers some of the author's other books: In addition to his much-beloved story about anthropomorphic rabbits, Adams penned two fantasy books set in the fictional Beklan Empire, first Shardik (1974) about a hunter pursuing a giant bear he believes to be imbued with divine power, and Maia (1984), a peasant girl sold into slavery who becomes entangled in a war between neighboring countries. Adams also wrote a collection of short stories called "Tales From Watership Down" in 1996, and the original "Watership Down" was also made into a movie and an animated TV series. In announcing his death, Richard's family also included a quote from the original "Watership Down".
"It seemed to Hazel that he would not be needing his body any more, so he left it lying on the edge of the ditch, but stopped for a moment to watch his rabbits and to try to get used to the extraordinary feeling that strength and speed were flowing inexhaustibly out of him into their sleek young bodies and healthy senses.
"'You needn't worry about them,' said his companion. 'They'll be alright -- and thousands like them.'"Read Replies (0)
By BeauHD from Slashdot's where-did-I-place-my-keys department
A new Microsoft patent has been published that describes a system that would let its HoloLens glasses track small items like car keys, ultimately helping users find their lost belongings. What's more is that the system can "monitor the status of objects without any instructions from users, keeping tabs on anything that's important to their lives," writes Adi Robertson via The Verge. From the report: The patent's basic idea is pretty simple. HoloLens has outward-facing cameras that can make a spatial map of a room, and machine vision technology can identify or track specific objects in an image. So if, for example, you put your keys down on a table, HoloLens could hypothetically spot them through the camera and quietly note their position. When you're about to leave the house, it could give you the keys' last known location, even if they've since been covered up by a newspaper or slipped under a couch cushion. But what's really interesting isn't the idea of HoloLens tracking an object. It's HoloLens learning what items matter to you and choosing what to follow, before you ever worry about losing something. To be clear, you could designate objects: one example has a traveler telling HoloLens to track their passport while abroad. In other cases, though, it could check to see how often you interact with an object, or when you move it around, and start tracking anything that hits a certain threshold.Read Replies (0)
By BeauHD from Slashdot's how-it-came-to-be department
Lasrick quotes a report from The New York Times (Warning: source may be paywalled; alternate source): For more than three years, rather than rely on military officers working out of isolated bunkers, Russian government recruiters have scouted a wide range of programmers, placing prominent ads on social media sites, offering jobs to college students and professional coders, and even speaking openly about looking in Russia's criminal underworld for potential talent. From the New York Post: "Russia's Defense Ministry bought advertising on Vkontakta, the country's most popular social media site, to lure those who were more talented with a keyboard than an AK-47 rifle. 'If you graduated from college, if you are a technical specialist, if you are ready to use your knowledge, we give you an opportunity,' the ad promised, according to the Times. The ad went on to assure recruits that they would be part of units called science squadrons based at military installations where they would live in 'comfortable accommodation' and showed an apartment outfitted with a washing machine, the Times reported. The Defense Ministry even dangled the chance to dodge Russia's mandatory draft by allowing university students to join a science squadron instead and then questioned them about their proficiency with programming languages, the report said."Read Replies (0)
By BeauHD from Slashdot's endangered-species department
An anonymous reader quotes a report from ABC News: China says it plans to shut down its ivory trade by the end of 2017 in a move designed to curb the mass slaughter of African elephants. The Chinese government will end the processing and selling of ivory and ivory products by the end of March as it phases out the legal trade, according to a statement released on Friday. China had previously announced it planned to shut down the commercial trade, which conservationists described as significant because China's vast, increasingly affluent consumer market drives much of the elephant poaching across Africa. China, which has supported an ivory-carving industry as part of its cultural heritage, said carvers will be encouraged to change their activities and work, for example, in the restoration of artifacts for museums. More efforts will be made to stop the illegal trade, the statement said. China has allowed trade in ivory acquired before a 1989 ban on the ivory trade by the Convention on International Trade in Endangered Species of Wild Fauna and Flora, which seeks to regulate the multi-billion-dollar trade in wild animals and plants. The number of Africa's savannah elephants dropped by about 30 percent from 2007 to 2014, to 352,000, because of poaching, according to a study published this year. Forest elephants, which are more difficult to count, are also under severe threat.Read Replies (0)
By BeauHD from Slashdot's over-priced-accessories department
Patently Apple has recently uncovered a new Apple patent that may help AirPods stay in your ears. The patent details a magnetic mechanism that wraps around the user's ear. Digital Trends reports: The magnets attract each other through the ear tissue, keeping the AirPods in place and ensuring that they don't get lost. Of course, it's not certain if Apple filed this patent with AirPods in mind -- one of the images clearly shows a wired pair of headphones, and the patent was filed in June. The concept, however, would help keep both wired and wireless earbuds in place. The issue of keeping AirPods in the ear has been arguably the biggest issue related to the AirPods, and for good reason -- they're pretty expensive little devices, so losing them is definitely not something you want to do. It's possible that Apple decided against using the ear hooks for aesthetic reasons -- Apple is known for its excellent design and the ear hooks in the patent don't exactly look great. Not only that but the design of the charging case would have to change with the ear hooks. Some reports indicate that the patent could be implemented with future versions and given the hullaballoo surrounding keeping AirPods in, we wouldn't be totally surprised. It's also possible, however, that Apple patented the design but ultimately ended up nixing it.Read Replies (0)
By BeauHD from Slashdot's wait-until-your-number-is-called department
One of the many ways self-driving cars will impact the world is with organ shortages. It's a morbid thought, but the most reliable sources for healthy organs and tissues are the more than 35,000 people killed each year on American roads. According to the book "Driverless: Intelligent Cars and the Road Ahead," 1 in 5 organ donations comes from the victim of a vehicular accident. Since an estimated 94 percent of motor-vehicle accidents involve some kind of a driver error, it's easy to see how autonomous vehicles could make the streets and highways safer, while simultaneously making organ shortages even worse. Slate reports: As the number of vehicles with human operators falls, so too will the preventable fatalities. In June, Christopher A. Hart, the chairman of the National Transportation Safety Board, said, "Driverless cars could save many if not most of the 32,000 lives that are lost every year on our streets and highways." Even if self-driving cars only realize a fraction of their projected safety benefits, a decline in the number of available organs could begin as soon as the first wave of autonomous and semiautonomous vehicles hits the road -- threatening to compound our nation's already serious shortages. We're all for saving lives -- we aren't saying that we should stop self-driving cars so we can preserve a source of organ donation. But we also need to start thinking now about how to address this coming problem. The most straightforward fix would be to amend a federal law that prohibits the sale of most organs, which could allow for development of a limited organ market. Organ sales have been banned in the United States since 1984, when Congress passed the National Organ Transplant Act after a spike in demand (thanks to the introduction of the immunosuppressant cyclosporine, which improved transplant survival rates from 20-30 percent to 60-70 percent) raised concerns that people's vital appendages might be "treated like fenders in an auto junkyard." Others feared an organ market would exploit minorities and those living in poverty. But the ban hasn't completely protected those populations, either. The current system hasn't stopped organ harvesting -- the illegal removal of organs from the recently deceased without the consent of the person or family -- either in the United States or abroad. It is estimated that, worldwide, as many as 10,000 black market medical operations are performed each year that involve illegally purchased organs. So what would an ethical fix to our organ transplant shortage look like? To start, while there's certainly a place for organ donation markets in the United States, implementation will be understandably slow. There are, however, small steps that can get us closer to a just system. For one, the country could consider introducing a "presumed consent" rule. This would change state organ donation registries from affirmative opt-in systems (checking that box at the DMV that yes, you do want to be an organ donor) to an affirmative opt-out system where, unless you state otherwise, you're presumed to consent to be on the list.Read Replies (0)
By BeauHD from Slashdot's consider-this-a-warning department
An anonymous reader quotes a report from The Guardian: Smart electricity meters, of which there are more than 100 million installed around the world, are frequently "dangerously insecure," a security expert has said. The lack of security in the smart utilities raises the prospect of a single line of malicious code cutting power to a home or even causing a catastrophic overload leading to exploding meters or house fires, according to Netanel Rubin, co-founder of the security firm Vaultra. If a hacker took control of a smart meter they would be able to know "exactly when and how much electricity you're using," Rubin told the 33rd Chaos Communications Congress in Hamburg. An attacker could also see whether a home had any expensive electronics. "He can do billing fraud, setting your bill to whatever he likes [...] The scary thing is if you think about the power they have over your electricity. He will have power over all of your smart devices connected to the electricity. This will have more severe consequences: imagine you woke up to find you'd been robbed by a burglar who didn't have to break in. "But even if you don't have smart devices, you are still at risk. An attacker who controls the meter also controls the meter's software, allowing him to cause it to literally explode." The problems at the heart of the insecurity stem from outdated protocols, half-hearted implementations and weak design principles. To communicate with the utility company, most smart meters use GSM, the 2G mobile standard. That has a fairly well-known weakness whereby an attacker with a fake mobile tower can cause devices to "hand over" to the fake version from the real tower, simply by providing a strong signal. In GSM, devices have to authenticate with towers, but not the other way round, allowing the fake mast to send its own commands to the meter. Worse still, said Rubin, all the meters from one utility used the same hardcoded credentials. "If an attacker gains access to one meter, it gains access to them all. It is the one key to rule them all."Read Replies (0)
By BeauHD from Slashdot's power-of-marketing department
dryriver writes: A few years ago I bought a multiplayer war game called Soldner: Secret Wars that I had never heard of before. (The game is entirely community maintained now and free to download and play at www.soldnersecretwars.de.) The professional reviews completely and utterly destroyed Soldner -- buggy, bad gameplay, no single-player mode, disappointing graphics, server problems and so on. For me and many other players who did give it a chance beyond the first 30 minutes, Soldner turned out to be the most fun, addictive, varied, satisfying and multi-featured multiplayer war game ever. It had innovative features that AAA titles like Battlefield and COD did not have at all at the time -- fully destructible terrain, walls and buildings, cool physics on everything from jeeps flying off mountaintops to Apache helicopters crashing into Hercules transport aircraft, to dozens of trees being blown down by explosions and then blocking an incoming tank's way. Soldner took a patch or three to become fully stable, but then was just fun, fun, fun to play. So much freedom, so much cool stuff you can do in-game, so many options and gadgets you can play with. By contrast, the far, far simpler -- but better looking -- Battlefield, COD, Medal Of Honor, CounterStrike war games got all the critical praise, made the tens of millions in profit per release, became longstanding franchises and are, to this day, not half the fun to play that Soldner is. How does this happen? How does a title like Soldner, that tried to do more new stuff than the other war games combined, get trashed by every reviewer, and then far less innovative and fun to play war games like BF, COD, CS sell tens of millions of copies per release and get rave reviews all around?Read Replies (0)