Programming

Linux Kernel 2.4 Or 2.6 In Embedded System? 178

snikulin writes "My 6-year-old embedded software happily runs on kernel v2.4 on an XScale CPU. The software gets a bunch (tens of megabytes) of data from an FPGA over a PCI-X bus and pushes it out over GigE to data-processing equipment. The tool chain is based on the somewhat outdated gcc v2.95. Now, for certain technical reasons we want to jump from the ARM-based custom board to an Atom-based COM Express module. This implies that I'll need to re-create a Linux RAM disk from scratch along with the tool chain. The functionality of the software will be essentially the same. My question: is it worth it to jump to kernel 2.6, or better to stick with the old and proven 2.4? What will I gain and what will I lose if I stay at 2.4 (besides the modern gcc compiler and the other related dev tools)?"
Programming

Balancing Performance and Convention 171

markmcb writes "My development team was recently brainstorming over finding a practical solution to the problem that's haunted anyone who's ever used a framework: convention vs. customization. We specifically use Rails, and like most frameworks, it's great for 95% of our situations, but it's creating big bottlenecks for the other 5%. Our biggest worry isn't necessarily that we don't know how to customize, but rather that we won't have the resources to maintain customized code going forward; it's quite simple to update Rails as it matures versus the alternative. What have your experiences been with this problem? Have you found any best practices to avoid digging custom holes you can't climb out of?"
Programming

Getting Started With Part-Time Development Work? 262

fortapocalypse writes "I'm getting paid a good salary as a Java developer and the hours are great. It is also very stable, which means something in today's economy, especially with a family to feed. However, I'm very unmotivated both because of the work that I do, which is boring, and because the organization I work for is highly political, disorganized, and lacks accountability. I've done what I could to try to change things at work and have pretty much given up on that. I want to go out on my own, either starting my own company or just working as a contractor doing Java development, but I'm not sure of the best way to get started, and my family needs the stability of my current job. I'd really like to start out part-time at 5-15 hours a week to use it as supplemental income (which my family could really use at the moment), but I really don't know where to start. I doubt many contracting agencies would be interested in a part-time worker. What would you suggest for someone in my position?"
Software

Michael Meeks Says OO.o Project is "Profoundly Sick" 676

unassimilatible writes "Michael Meeks, who works full time developing OpenOffice, writes in his blog that the project is 'profoundly sick.' 'In a healthy project we would expect to see a large number of volunteer developers involved, in addition — we would expect to see a large number of peer companies contributing to the common code pool; we do not see this in OpenOffice.org. Indeed, quite the opposite we appear to have the lowest number of active developers on OO.o since records began: 24, this contrasts negatively with Linux's recent low of 160+. Even spun in the most positive way, OO.o is at best stagnating from a development perspective.'"
Programming

Rails and Merb Ruby Web Frameworks Merge 80

An anonymous reader writes "The Merb and Rails Core Teams today announced a major merger; the two projects will become one, and be released some time in Q2 of 2009 as Rails 3. This is great news for lots of folks who worried about the potential community fracture, as well as great news for all the developers who will now have an all-around better option for programming Ruby. Read more about the details in Yehuda's blog post, or at the Ruby on Rails blog."
Programming

Hardware Is Cheap, Programmers Are Expensive 465

Sportsqs points out a story at Coding Horror which begins: "Given the rapid advance of Moore's Law, when does it make sense to throw hardware at a programming problem? As a general rule, I'd say almost always. Consider the average programmer salary here in the US. You probably have several of these programmer guys or gals on staff. I can't speak to how much your servers may cost, or how many of them you may need. Or, maybe you don't need any — perhaps all your code executes on your users' hardware, which is an entirely different scenario. Obviously, situations vary. But even the most rudimentary math will tell you that it'd take a massive hardware outlay to equal the yearly costs of even a modest five person programming team."
Java

Java Performance On Ubuntu Vs. Windows Vista 258

Henckle writes "Phoronix did a comparison of the Java performance between Ubuntu and Windows Vista. They tested both Java and OpenJDK on Ubuntu 8.10 and Java on Windows Vista Premium SP1, all with stock configurations. To no-one's surprise, Ubuntu was faster in a majority of the tests. The two OSs were similar in ray-tracing, and Vista was faster at Java OpenGL due to shortcomings with the Linux graphics driver."
Programming

Scaling Facebook To 140 Million Users 178

1sockchuck writes "Facebook now has 140 million users, and in recent weeks has been adding 600,000 new users a day. To keep pace with that growth, the Facebook engineering team has been tweaking its use of memcached, and says it can now handle 200,000 UDP requests per second. Facebook has detailed its refinements to memcached, which it hopes will be included in the official memcached repository. For now, their changes have been released to github."
It's funny.  Laugh.

If Programming Languages Were Religions 844

bshell writes "With Christmas around the corner I know we are all thinking about religion, or at least maybe wondering why this one religion dominates the rest for these few weeks. A fellow named Rodrigo Braz Monteiro (amz) posted this list comparing each programming language to a religion. Guaranteed to make you chuckle and generate a good long thread here on slashdot. Great way to pass the time as work winds down this week and we relate to our own programming faiths during this very special time of year. Merry PHPmas." Fortunately Pastafarianism is referenced.

Is JavaScript Ready For Creating Quality Games? 165

kumpetan writes "After seeing so many games built with JavaScript, and considering the applications it powers and the use of Ajax, it seems like web developers are now in the game development pot. It is getting easier and more popular with libraries like jQuery, MooTools, Prototype, etc. There are even libraries like Game JS, GameQuery or JavaScript GameLib, specifically for this purpose. So, will we start to see more ambitious game projects arise using these tools?"
Databases

Is MySQL's Community Eating the Company? 223

mjasay writes "Craigslist's Jeremy Zawodny reviews the progress of MySQL as a project, and discovers that through third-party forks and enhancements like Drizzle and OurDelta 'you can get a "better" MySQL than the one Sun/MySQL gives you today. For free.' Is this a good thing? On one hand it demonstrates the strong community around MySQL, but on the other, it could make it harder for Sun to fund core development on MySQL by diverting potential revenue from the core database project. Is this the fate of successful open-source companies? To become so successful as a community that they can't eke out a return as a company? If so, could anyone blame MySQL/Sun for creating its own proprietary fork in order to afford further core development?"
Perl

Larry Wall Talks Perl, Culture, and Community 123

LostDiver writes "Computerworld Australia caught up recently with Larry Wall of Patch and Perl fame. He talks about the development of Perl as 'scratching an itch,' a release date for Perl 6 (Christmas day, year unknown) and beauty versus practicality. Computerworld also has some more information on the upcoming Perl 6. A while back they interviewed Bjarne Stroustrup of C++ fame as well." jamie pointed out a interesting, related video of a presentation by Clay Shirky from last year's Supernova conference in which he discusses why the Perl community (or any web community) drives progress and innovation.
Programming

Web Content Accessibility Guidelines 2.0 Now Final 57

beetle496 writes "It has been going on nine years now, but finally there are formal standards for Web accessibility for technologies other than HTML. They ask that you start with the press release (lots of links), but regulars might be more entertained by the last time WCAG made the front page here. Many folks here will point out that web accessibility is old hat, and by implication this is hardly news, but if you do Web development for any government organization, you should expect that accessibility is a base requirement. The Section 508 standards are to be updated (relatively) soon too."
Oracle

Oracle Adds Data-integrity Code To Linux Kernel 53

jazir1979 writes "ZDNet is reporting that Oracle has added code to the Linux kernel for ensuring data integrity. The code has been developed in partnership with Emulex and was recently accepted into the 2.6.27 kernel release." According to the article, "The code adds metadata to data at rest or in transit, to monitor whether that data has been corrupted. It helps make sure that I/O operations are valid by looking at that metadata — which acts as verification information — exchanged during data transmissions."
Cellphones

iPhone App Pricing Limits Developers 437

HardYakka writes "According to this post in the Fortune blog, the iTunes app store has been a boon for users but some developers are saying the number of free and 99 cent apps make it difficult for developers to create complex, higher priced apps. Craig Hockenberry of Iconfactory says the iPhone may never get its killer app like the spreadsheet was for the Mac. If Apple does not do something, the store will be left with only ring tones and simple games. Some are suggesting that overpaid developers are the problem and the recession will soon lower the wages and costs for complex apps."
Education

Best Paradigm For a First Programming Course? 592

Keyper7 writes "The first programming course I had during my computer science schooling, aptly named 'Introduction to Programming,' was given in C because its emphasis was on imperative programming. A little before I graduated, though, it was decided that the focus would change to object-oriented programming with Java. (I must emphasize that the change was not made because of any hype about Java or to dumb down the course; back then and still, it's presented by good Java programmers who try to teach good practices and do not encourage excessive reliance on libraries.) But the practices taught are not paradigm-independent, and this sparked a discussion that continues to this day: which paradigm is most appropriate to introduce programming? Besides imperative and object-oriented, I know teachers who firmly believe that functional programming is the best choice. I'm interested in language-independent opinions that Slashdotters might have on this matter. Which paradigm is good to introduce programming while keeping a freshman's mind free enough for him/her to learn other paradigms afterwards?"
Perl

Higher-Order Perl Available For Free Download 68

Christopher Cashell writes "As noted on Perlbuzz, Mark Jason Dominus's amazing book, Higher-Order Perl, is now available for free download. This is a great book that goes way beyond your normal programming reference. This will change the way you look at programs, and make you a better programmer in any language. It sits on that special shelf reserved for books like Structure and Interpretation of Computer Programs, The C Programming Language, and The Practice of Programming."
Education

Bjarne Stroustrup On Educating Software Developers 538

jammag writes "Bjarne Stroustrup, creator of C++ and a professor at Texas A&M, weighs in on the problems in today's CS programs. In particular, Java (there's too much of it), the quality of graduates (companies aren't happy), and the need to balance the theoretical and the practical (long overdue). Not pulling punches, Stroustrup even talks about high schools — 'High schools could teach students to work hard at something (just about anything), to search out information as needed, and learn to express their ideas in writing and orally.' He finishes by giving advice to working developers: 'Serious programming is a team sport, brush up on your social skills. The sloppy fat geek computer genius semi-buried in a pile of pizza boxes and cola cans is a mythical creature, best buried deep, never to be seen again.'" Read on for more choice quotes from the quotable professor.
Programming

Comparison of Nine Ruby Implementations 75

An anonymous reader writes "Zen and the Art of Programming published a new version of The Great Ruby Shootout, which was aimed at testing the performances of multiple Ruby implementations. On the benchmark table this time around are Ruby 1.8 (on GNU/Linux and Windows), Ruby 1.9 (aka Yarv), Ruby Enterprise Edition (aka REE), JRuby 1.1.6RC1, Rubinius, MagLev, MacRuby 0.3 and IronRuby. The results of this comprehensive comparison show that for this set of benchmarks, Ruby 1.9.1 is almost 5 times faster than the notoriously slow Ruby 1.8. Is Ruby finally going to be acceptably fast?"

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