rick446 writes "I took some time to benchmark the global write lock improvements in MongoDB 2.0. From the article: 'MongoDB, as some of you may know, has a process-wide write lock... Per-database and per-collection locking is on the roadmap ..., but it's not here yet. What was announced in MongoDB version 2.0 was locking-with-yield. I was curious about the performance impact of the write lock and the improvement of lock-with-yield, so I decided to do a little benchmark, MongoDB 1.8 versus MongoDB 2.0.'"

wiredmikey writes "In a rare move, Microsoft is breaking its normal procedures and will issue an emergency out-of-band security update on Thursday to address a hash collision attack vulnerability that came into the spotlight yesterday, and affects various Web platforms industry-wide. The vulnerability is not specific to Microsoft technologies and has been discovered to impact PHP 5, Java, .NET, and Google's v8, while PHP 4, Ruby, and Python are somewhat vulnerable. Microsoft plans to release the bulletin on December 29, 2011, at 10:00 AM Pacific Time, and said it would addresses security vulnerabilities in all supported releases of Microsoft Windows. 'The impact of this vulnerability is similar to other Denial of Service attacks that have been released in the past, such as the Slowloris DoS or the HTTP POST DoS,' said security expert Chris Eng. 'Unlike traditional DoS attacks, they could be conducted with very small amounts of bandwidth. This hash table multi-collision bug shares that property.'"

theodp writes "In the Sixties, we could put a man on the moon. Nowadays, laments jocastette, America's tech giants can't even put a BASIC on the phone. Woz managed to crank out a BASIC interpreter for the 6502 in the '70s. As did Bill Gates and Paul Allen. So, why — at a time when development has never been easier — can't Google, Apple, and Microsoft manage to support a free BASIC or other programming-for-the-masses development environment on desktops, laptops, tablets and phones?" My limited experience with Android development showed using Java to be obtuse and downright obnoxious to do anything (at least without Eclipse, and even with it doing anything non-standard required digging through horrendous ant buildfiles). And, of course, without a REPL things were even more obnoxious. There is the android-scripting project, but it doesn't provide particularly exhaustive access to the platform.

snydeq writes "Fatal Exception's Neil McAllister writes in favor of new programming languages, given the difficulty of upgrading existing, popular languages. 'Whenever a new programming language is announced, a certain segment of the developer population always rolls its eyes and groans that we have quite enough to choose from already,' McAllister writes. 'But once a language reaches a certain tipping point of popularity, overhauling it to include support for new features, paradigms, and patterns is easier said than done.' PHP 6, Perl 6, Python 3, ECMAScript 4 — 'the lesson from all of these examples is clear: Programming languages move slowly, and the more popular a language is, the slower it moves. It is far, far easier to create a new language from whole cloth than it is to convince the existing user base of a popular language to accept radical changes.'"

New submitter ittybad writes "I work with a small web-based company, and, for some new web applications, we are looking to possibly change frameworks if it will be a benefit to our developers and our customers. We have experience with PHP's Symfony 1.4, and are not happy with what we are experiencing with Symfony 2.0. We have some Ruby guys who would love us to implement a Ruby on Rails solution, and our backend is Python powered — so maybe Django is the way to go. So, I ask you, Slashdotters, what web framework do you find to be the best and why? Why would you avoid others?"

An anonymous reader writes "The NY Times explores some of the best ways to teach kids and finds that some of the new tools are encouraging the kids to share their work with each other. One teacher first tried to keep the kids quiet and staring at their own monitors but found it was better to let them copy each other. He calls MIT's Scratch a 'gateway' tool. Then the article points out that programming Blender with Python is not as hard to pick up as your grandparent's programming languages — and kids today are learning them in a few months." The Wikipedia entry on Scratch is worth reading, too.

AlexDomo writes to point out this statistical breakdown of the programming languages represented at StackOverflow. "Suprisingly, JavaScript turned out to be the most 'over-represented' language on StackOverflow, by quite a long way at 294% [where "a representation of 100% means that the SO tag count is aligned exactly with the TIOBE language index"]. Could this also be because programming JavaScript is generally quite difficult and will result in people seeking help more often? Following this was C# (which I had expected to be number 1), at 153%. After this, PHP, Ruby and Python were basically fairly balanced at around 100%. The most 'under-represented' major language would definitely be C at 11%. Three other major languages which seemed to be a bit under-represented, below 50%, were C++, Java and Objective-C. For details of the method used and the full results, refer to the original article." One of the attached comments makes an interesting point about the difficulty in divining meaning from such statistics, though.

snydeq writes "Fatal Exception's Neil McAllister sees Microsoft's Project Roslyn potentially reinventing how we view compilers and compiled languages. 'Roslyn is a complete reengineering of Microsoft's .NET compiler toolchain in a new way, such that each phase of the code compilation process is exposed as a service that can be consumed by other applications,' McAllister writes. 'The most obvious advantage of this kind of "deconstructed" compiler is that it allows the entire compile-execute process to be invoked from within .NET applications. With the Roslyn technology, C# may still be a compiled language, but it effectively gains all the flexibility and expressiveness that dynamic languages such as Python and Ruby have to offer.'"

First time accepted submitter ServerCobra writes "Last week, Mark Pilgrim 'pulled down his popular 'Dive Into...' sites. I remirrored a couple of them, because they are far too helpful and important to lose. DiveIntoPython.net, DiveIntoPython3.net, and DiveIntoHTML5.net."

John Cowan recently gave a talk on the progress of R7RS (slides), the next revision of the Scheme language standard, at LispNYC. After the R6RS debacle, the community stepped back and is now basing the next standard on R5RS; the work has been split into two languages — R7RS-Small and R7RS-Large. The first working group is preparing to issue a final draft of the R7RS-Small language (PDF; clocking in at 73 pages vs. R5RS's 50) within the next few weeks. Read on for a summary of the planned changes to R7RS (more or less in the order of presentation).

eldavojohn writes "The Metasploit Framework has come a long way and currently allows just about anyone to configure and execute exploits effortlessly. Metasploit: The Penetration Tester's Guide takes current documentation further and provides a valuable resource for people who are interested in security but don't have the time or money to take a training class on Metasploit. The highlights of the book rest on the examples provided to the reader as exercises in exploiting several older versions of operating systems like Windows XP and Ubuntu while at the same time avoiding triggering antivirus or detection. The only weak point of this book is that a couple chapters refer the reader to external texts (on stacks and registers) in order to meet requirements for crafting exploits. The book also gives the reader a brief warning on ethics as many of these exploits and techniques would most likely work on many sites and networks. If you're wondering how seemingly inexperienced groups like lulzsec constantly claim victims, this would be an excellent read." Keep reading for the rest of eldavojohn's review.

Last week you asked the Director of the Raspberry Pi Foundation, Eben Upton, about developing an ultra-low-cost computer and running a charitable organization. Below you'll find his answers. Thanks go out to a busy Eben for responding so quickly.

First time accepted submitter Mensa Babe writes "Oliver Morgan, the original author of the JavaScript Toolkit, or just 'The Toolkit' as it is known in the JavaScript community, has just announced the release of the long awaited version 1.1.0, with better documentation and added function support. Quoting the project documentation: '[JavaScript] Toolkit offers a large number of integrated methods and utilities to help enrich the javascript object library. Javascript was built originally for browsers and as such lacks a large number of data utility methods with are seen in languages such as Python and Ruby. However times have changed and JavaScript is being used more and more in backend platforms. JS Toolkit aims to bridge that gap and provide everyone a modern developer needs to produce fast, secure and tidy code quick and easily.' The Toolkit fully supports ECMAScript 5 and runs on the most important virtual machines that we have today, including Node.JS, V8, Rhino, RingoJS, and many others. It continues to be actively developed."

First time accepted submitter zimania writes "At the start of every school year, my kids' teachers invariably ask if any parents have any special skills they can present to the students. As a software engineer, I'd like to give a presentation to the classes about developing software. The tricky part is making a presentation fun, inspirational, and easy enough for 2nd and 4th graders to grasp. Has anybody been brave enough to attempted such a thing? Are there kid-tested prepackaged presentations freely available? Would it be best to present the development of a simple game? Web page? Any advice is welcome."

First time accepted submitter phoolishcyrus writes "Dear Slashdot: would you kindly take a look at our little project, PTVS — Python Tools for Visual Studio? It helps you develop Python (using any interpreter, not just IronPython) and comes with a few other goodies. Spare no punches."

An anonymous reader writes "The site Python Fiddle, like the similarly named jsFiddle, allows users to post code and share it with others. However, unlike jsfiddle, pythonfiddle brings a major advancement with the Python language, which fully runs in the browser."

thatpythonguy writes "Addison-Wesley publishers has released The Python Standard Library By Example, another Python book that strategically fits in between programming cookbooks and library reference manuals. It brings the Python standard library that much closer to Python programmers and helps make them more proficient in their trade." Read below for Ahmed's first Slashdot review.

snydeq writes with an editorial in InfoWorld about the resurgence of native code. From the article: "Modern programmers have increasingly turned away from native compilation in favor of managed-code environments such as Java and .Net, which shield them from some of the drudgery of memory management and input validation. Others are willing to sacrifice some performance for the syntactic comforts of dynamic languages such as Python, Ruby, and JavaScript. But C++11 arrives at an interesting time. There's a growing sentiment that the pendulum may have swung too far away from native code, and it might be time for it to swing back in the other direction. Thus, C++ may have found itself some unlikely allies."

derGoldstein writes "Project PyPy is an alternative implementation of Python, with the main advantage being a Just In Time (JIT) compiler which speeds up your code considerably. They've announced the first public release of jitviewer, which is a visualization tool that helps you understand how your code is being compiled by PyPy's JIT, all the way down to assembly. If you just want to see how it looks and play with it, they've set up an online demo — just select a file, and click 'Show Assembler.'"

ProgramadorPerdido writes "I have been a developer for 25 years. I learned Basic, VB, C, FoxPro, Cobol, and Assembler, but the languages I used the most were Pascal and Delphi. I then concentrated on a now-non-mainstream language for 11 years, as it was used at work. One day I had the chance to move into Project Management and so I did for the last 2 years. Now, at almost 40 years old, I'm at a crossroad. On one side I realized developing is the thing I like best, while on the other side, the languages I'm most proficient with are not that hot on the market. So I came here looking for any advice on how to advance my career. Should I try to learn web development (html, xhtml, css, php, python, ruby)? Should I learn Java and/or C#? Or am I too old to learn and work a new language? Should I go back to PM work even if I do not like it that much? Any similar experiences?"