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Databases

Ask Slashdot: Which NoSQL Database For New Project? 272

Posted by Soulskill
from the mo-sql-mo-problems dept.
DorianGre writes: "I'm working on a new independent project. It involves iPhones and Android phones talking to PHP (Symfony) or Ruby/Rails. Each incoming call will be a data element POST, and I would like to simply write that into the database for later use. I'll need to be able to pull by date or by a number of key fields, as well as do trend reporting over time on the totals of a few fields. I would like to start with a NoSQL solution for scaling, and ideally it would be dead simple if possible. I've been looking at MongoDB, Couchbase, Cassandra/Hadoop and others. What do you recommend? What problems have you run into with the ones you've tried?"
Programming

Jim Weirich, Creator of Rake, Has Passed Away 109

Posted by timothy
from the always-sad-news dept.
SirLurksAlot writes "News is beginning to circulate on Twitter and various sites that Jim Weirich, the creator of Rake, has passed away at the age of 58. He was an active developer (his last commit in the last 24 hours) and has made many contributions to the Ruby community over the years, as well as being a prolific speaker and teacher. He had a great sense of humor and was beloved by many. He will be greatly missed."
Ruby

Ruby 2.1.0 Released 65

Posted by Soulskill
from the not-dying-after-all dept.
Today marks the release of Ruby version 2.1.0. A brief list of changes since 2.0.0 has been posted, and file downloads are available. Here are some of the changes:
  • Now the default values of keyword arguments can be omitted. Those 'required keyword arguments" need giving explicitly at the call time.
  • Added suffixes for integer and float literals: 'r', 'i', and 'ri'.
  • def-expr now returns the symbol of its name instead of nil.
  • rb_profile_frames() added. Provides low-cost access to the current ruby stack for callstack profiling.
  • introduced the generational GC a.k.a RGenGC (PDF).
Ruby

Is Ruby Dying? 400

Posted by Soulskill
from the netcraft-confirms-it dept.
New submitter John Moses writes "I have been working with node.js a lot lately, and have been discussing with co-workers if node.js is taking steam away from Ruby at all. I think the popularity of the language is an important talking point when selecting a language and framework for a new project. A graph on the release date of gems over time could help determine an answer. The front page of RubyGems only shows data on the most popular, but I am really interested in seeing recent activity. My theory is that if developers' contributions to different gems is slowing down, then so is the popularity of the language."
Education

Zuckerberg Shows Kindergartners Ruby Instead of JavaScript 144

Posted by timothy
from the presto-changeout dept.
theodp writes "If one was introducing coding to 10 million K-12 kids over 5 days, one might settle on a programming language for examples more than a few weeks before D-Day. But the final tutorials for the Hour of Code aren't due now until the day they're to be taught, so Code.org was able to switch the example Facebook CEO Mark Zuckerberg uses to illustrate Repeat Loops from JavaScript to what looks like Ruby (earlier /. discussion of the JavaScript example), which will no doubt make things clearer for the kindergarten set working on the accompanying Angry Birds tutorial. Khan Academy, on the other hand, is sticking with JavaScript for its Hour of Code tutorial aimed at middle-schoolers, which culminates in a project showing the kids how they can draw a circular plate by invoking an ellipse function with equal major and minor axes. By the way, as Bret Victor might point out, the 2013 Khan Academy lesson looks a lot like circa-1973 PLATO!"
Government

Healthcare.gov and the Gulf Between Planning and Reality 494

Posted by samzenpus
from the if-at-first-you-don't-succeed dept.
An anonymous reader writes in with this excerpt from Shirky.com. "The idea that 'failure is not an option' is a fantasy version of how non-engineers should motivate engineers. That sentiment was invented by a screenwriter, riffing on an after-the-fact observation about Apollo 13; no one said it at the time. (If you ever say it, wash your mouth out with soap. If anyone ever says it to you, run.) Even NASA's vaunted moonshot, so often referred to as the best of government innovation, tested with dozens of unmanned missions first, several of which failed outright. Failure is always an option. Engineers work as hard as they do because they understand the risk of failure. And for anything it might have meant in its screenplay version, here that sentiment means the opposite; the unnamed executives were saying 'Addressing the possibility of failure is not an option.' ... Healthcare.gov was unable to complete even a thousand enrollments a day at launch, and for weeks afterwards. As we now know, programmers, stakeholders, and testers all expressed reservations about Healthcare.gov's ability to do what it was supposed to do. Yet no one who understood the problems was able to tell the President. Worse, every senior political figure—every one—who could have bridged the gap between knowledgeable employees and the President decided not to. And so it was that, even on launch day, the President was allowed to make things worse for himself and his signature program by bragging about the already-failing site and inviting people to log in and use something that mostly wouldn't work. Whatever happens to government procurement or hiring (and we should all hope those things get better) a culture that prefers deluding the boss over delivering bad news isn't well equipped to try new things.'"
Programming

Learning To Code: Are We Having Fun Yet? 226

Posted by timothy
from the 10-sin-20-go-to-hell dept.
theodp writes "Nate West has a nice essay on the importance of whimsy in learning to program. "It wasn't until I was writing Ruby that I found learning to program to be fun," recalls West. "What's funny is it really doesn't take much effort to be more enjoyable than the C++ examples from earlier...just getting to write gets.chomp and puts over cout > made all the difference. Ruby examples kept me engaged just long enough that I could find Why's Poignant Guide to Ruby." So, does the future of introductory computer programming books and MOOCs lie in professional, business-like presentations, or does a less-polished production with some genuine goofy enthusiasm help the programming medicine go down?"
Software

GitHub Adds Support For Diffing 3D Files 29

Posted by Soulskill
from the still-waiting-on-4D-file-diffs dept.
An anonymous reader writes "A few months after releasing support for viewing models in .STL format, GitHub just added support for viewing changes to .STL formatted 3D models directly in the browser. 'How does this work? We take both versions of the model, and using binary space partitioning, we compute the added, removed, and unchanged parts. This is done using csgtool, a C library paired with a Ruby gem via FFI. These pieces are cached and displayed by the 3D viewer we already have, though we color them differently and play with their transparency to help illustrate the changes.'"
Books

Book Review: The Healthy Programmer 461

Posted by samzenpus
from the read-all-about-it dept.
benrothke writes "Diet books are literally a dime a dozen. They generally benefit only the author, publisher and Amazon, leaving the reader frustrated and bloated. With a failure rate of over 99%, diet books are the epitome of a sucker born every minute. One of the few diet books that can offer change you can believe in is The Healthy Programmer: Get Fit, Feel Better, and Keep Coding. Author Joe Kutner observes that nearly every popular diet fails and the reason is that they are based on the premise of a quick fix without focusing on the long-term core issues. It is inevitable that these diets will fail and the dieters at heart know that. It is simply that they are taking the wrong approach. This book is about the right approach; namely a slow one. With all of the failed diet books, Kutner is one of the few that has gotten it right." Keep reading for the rest of Ben's review.
Graphics

New Animated PNG Creation Tools Intend To Bring APNG Into Mainstream Use 246

Posted by timothy
from the so-many-to-choose-from dept.
Kagetsuki writes "While grainy GIF images can have entertaining uses, they aren't the ideal animated image format due to lack of full color support and an alpha channel [for varied transparency]. Animated PNG doesn't have these faults and has been available and incorporated in quite a few browsers since roughly 2004. Lack of tools and recognition has hurt adoption, so to remedy this there is a campaign on Kickstarter to create an Open Source, high quality Animated PNG [APNG] conversion library and GUI Editor based on the APNG Assembler tool 'apngasm.' Even the primary goal includes libraries/modules for C/C++ and Ruby along with a cross platform GUI authoring tool. Aside from supporting the project simply using APNG willl help raise interest and support in the standard and bring us one step closer to a world with cleaner animated images."
Bug

Hackers Using Bots, Scripts To Lock Down Restaurant Reservations 214

Posted by Unknown Lamer
from the flaws-in-the-system dept.
Nerval's Lobster writes "Forget about hacking an app or database: for a small cadre of hackers in San Francisco, it's all about writing code that can score them a great table at a hot restaurant. According to the BBC, these developers and programmers have designed bots that scan restaurant Websites for open tables and reserve them. Diogo Mónica, a security engineer with e-commerce firm Square, is one of those programmers. A self-described foodie, he decided to get around his inability to score a table at the ultra-popular State Bird Provisions by writing a script that sent out an email every time the restaurant's reservation page changed. 'Once a reservation got canceled I would get an email and could quickly get it for myself,' he wrote in a blog posting. But soon he noticed something peculiar: 'As soon as reservations became available on the website (at 4am), all the good times were immediately taken and were gone by 4:01am.' He suspected it was automated 'reservation bots at work,' built by other programmers with a hankering for fine cuisine. 'After a while even cancellations started being taken immediately from under me,' he wrote. 'It started being common receiving an email alerting of a change, seeing an available time, and it being gone by the time the website loaded.' His solution was to build his own reservation bot, using Ruby, and post the code in the wild."
Programming

Ingy döt Net Tells How Acmeism Bridges Gaps in the Software World (Video) 164 Screenshot-sm

Posted by timothy
from the one-for-all-and-all-for-one dept.
Ingy döt Net (yes, that's his name) likes to bridge gaps in the software world. People get religious about their favorite programming languages, he says, but in the end, no matter the language, the methodology or the underlying OS, all programming is about telling computers what to do -- from "add these numbers" to complex text manipulation. Ingy compares a new app or module in the world of Free and Open Source as a gift that the creator has given to others; if that gift can be simultaneously bestowed on users of Perl, Python, and Ruby at the same time, its worth is amplified. So he proposes (and provides a growing set of tools) to make programming language irrelevant, by the sly means of encouraging people to write software using whatever their favorite tools are, but with a leaning toward using only language features which are broadly available to *other* programming languages as well. He's adopted the term Acmeism to describe this approach; Acmeists who follow his lead strive to create software that is broadly re-useable and adaptable, rather than tied only to a single platform.
Programming

Why JavaScript On Mobile Is Slow 407

Posted by Soulskill
from the i-blame-the-schools dept.
An anonymous reader writes "Drew Crawford has a good write up of the current state of JavaScript in mobile development, and why the lack of explicit memory handling (and a design philosophy that ignores memory issues) leads to massive garbage collection overhead, which prevents HTML5/JS from being deployed for anything besides light duty mobile web development. Quoting: 'Here’s the point: memory management is hard on mobile. iOS has formed a culture around doing most things manually and trying to make the compiler do some of the easy parts. Android has formed a culture around improving a garbage collector that they try very hard not to use in practice. But either way, everybody spends a lot of time thinking about memory management when they write mobile applications. There’s just no substitute for thinking about memory. Like, a lot. When JavaScript people or Ruby people or Python people hear "garbage collector," they understand it to mean "silver bullet garbage collector." They mean "garbage collector that frees me from thinking about managing memory." But there’s no silver bullet on mobile devices. Everybody thinks about memory on mobile, whether they have a garbage collector or not. The only way to get "silver bullet" memory management is the same way we do it on the desktop–by having 10x more memory than your program really needs.'"
Linux

Fedora 19 Released 202

Posted by Soulskill
from the done-and-done dept.
hypnosec writes "The Fedora Project has officially announced the release of Fedora 19 'Schrödinger's Cat' today. New features for the open source distribution include the developer's assistant, which accelerates development efforts by providing templates, samples and toolchains for a different languages; OpenShift Origin, which allows easy building of Platform-as-a-Service infrastructure; node.js; Ruby 2.0.0; MariaDB; Checkpoint & Restore, which allows users to checkpoint and restore processes; and OpenLMI, which makes remote management of machines simpler. The distribution also packs GNOME 3.8, KDE Plasma Workspace 4.10 and MATE Desktop 1.6."
United Kingdom

Fixing Over a Decade of Missing Computer Programming Education In the UK 117

Posted by samzenpus
from the we-don't-need-no-education-well-maybe-we-do dept.
For around a decade programming was not part of the computer curriculum in the U.K.. Through a lot of hard work from advocates and the industry this will soon change, but a large skills gap still exists. Tim Gurney is just one of many working on closing that gap. His Coding in Schools initiative aims to "work with schools and students and inspire the next generation of computer programmers and software engineers by creating and spearheading schools based programming clubs." I recently sat down with Tim to talk about who's working on the problem and what yet needs to be done. Read below to see what he's doing to change the state of things.
Ruby

The Rails Girls Are Coming to a City Near You (Video) 162

Posted by Roblimo
from the programming-not-trains dept.
So far, the Rails Girls have groups in cities ranging from Warsaw to Wellington, with U.S. gatherings in Washington D.C., Charlotte NC, San Francisco CA, and... let's make it easy: Here's a map. OMG! They're everywhere! Actually, mostly Europe, being as they started in Finland, same as the Leningrad Cowboys and a popular computer operating system. But they're spreading like mad. Would you believe the reason one of the two founders originally got interested in Ruby on Rails was because she wanted to make a fan page for American politician Al Gore? Our interviewee, Magda (from Rails Girls Warsaw), swears this is true. She also tells us about their upcoming Washington D.C. workshop on June 13th, 2013, in conjunction with the June 14-15 RubyNation event. Sounds like fun, doesn't it. Maybe you need more of this kind of fun where you live, eh? If there isn't a Rails Girls group near you, maybe you should start one and help more women and girls get into programming. This is the Rails Girls' goal. Any particular ages? Not really. And their workshops are all free of charge: "You just need to be excited!"
Botnet

Ruby On Rails Exploit Used To Build IRC Botnet 91

Posted by Unknown Lamer
from the bad-script-kiddie dept.
Trailrunner7 writes "Developers who have not updated their Ruby on Rails installations with a five-month-old security patch would do well to secure the Web development framework now. Exploit code has surfaced for CVE-2013-0156 that is being used to build a botnet of compromised servers. Exploit code has been publicly available since the vulnerability was disclosed in January on Github and Metasploit, yet the vulnerability had not been exploited on a large scale until now, said security researcher Jeff Jarmoc." One reason your web server firewall might want to block IRC connections to arbitrary hosts.
Open Source

Fedora 19 Alpha Released 83

Posted by Soulskill
from the code-names-with-umlauts dept.
hypnosec writes "Following delays due to UEFI, the alpha version of Fedora 19 'Schrödinger's Cat' has been released. The alpha version brings with it all the features of Fedora 19, including the updated desktop options – GNOME 3.8, KDE Plasma 4.10 and MATE 1.6. Other new features include Developer's Assistant – a tool that would allow developers to code easily with ready templates, samples and more; OpenShift Origin – through which users will be able to deploy their own Platform-as-a-Service infrastructure; Ruby 2.0.0; Scratch; Syslinux – provides for simplified booting of Fedora; systemd Resource Control – which allows for modification of service settings without requiring a reboot; and Checkpoint & Restore. Downloads and release notes available at the Fedora Project site."
Open Source

Ask Slashdot: Service-Heavy FOSS Hosting? 75

Posted by timothy
from the for-work-and-play dept.
An anonymous reader writes "For many of us our hosting providers are a way to hone our skills as well as run a business. Which provider out there gives the best bang for the buck for a FOSS developer? Virtually everybody provides Perl, PHP, Ruby, MySQL / MariaDB etc. but where can one get easy and cheap access to a stuff like NodeJS and Big Data? Companies such as Pair Networks are great but not quite on the mark with any of their service offerings for somebody looking to test out real world scenarios with these technologies from a hosted stance. Obviously hosting from home is always an option but that has the penalty of administration, backup, DR planning, bigger security footprint etc. and for those of us whose time is balanced between making money and friends / family time that's not very appealing."

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