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• Free E-Book - TypeScript Succinctly

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2013/06/22/free-e-book---typescript-succinctly.aspxAt http://www.syncfusion.com/resources/techportal/ebooks/typescript, Syncfusion are a free E-book "TypeScript Succinctly""The extensive adoption of JavaScript for application development, and the ability to use HTML and JavaScript to create Windows Store apps, led Microsoft to develop TypeScript, a superset of JavaScript. Though the messiness of JavaScript causes many .NET developers to avoid the language, Microsoft's additions extend many familiar features of .NET programming to JavaScript. With TypeScript Succinctly by Steve Fenton, you will learn how TypeScript provides optional static typing and classes to JavaScript development, how to create and load modules, and how to work with existing JavaScript libraries through ambient declarations. TypeScript is even significantly integrated with Visual Studio to provide the autocompletion and type checking you are most comfortable with."

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• How to install iodbc in Ubuntu 12.10

  - by Hanynowsky

  I need to install the library iodbc (depends on libodbc2) in my Quantal machine. Yet there is creepy dependency problem. This was replaced somehow by unixodbc which I don't have, installed. Here is what I get when I try to install : sudo apt-get install libiodbc2-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libiodbc2-dev : Depends: libiodbc2 (= 3.52.7-2build2) but it is not going to be installed Depends: iodbc (= 3.52.7-2build2) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I can tell that iodbc conflicts with odbcinst. Yet, I cannot remove it due to the following: sudo apt-get remove odbcinst Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: akonadi-backend-mysql calligra-l10n-engb kde-l10n-engb kdevelop-l10n kdevelop-php-docs-l10n kdevelop-php-l10n libakonadi-kabc4 libakonadi-notes4 libakonadiprotocolinternals1 libboost-thread1.49.0 libdmtx0a libgpgme++2 libkcalcore4 libkdgantt2 libkholidays4 libkimap4 libkldap4 libkmbox4 libkmime4 libkolabxml0 libkpgp4 libkresources4 libksieve4 libprison0 libqgpgme1 libqrencode3 libxerces-c3.1 Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: akonadi-server k3b k3b-i18n katepart kde-runtime kdelibs-bin kdelibs5-plugins kdepim-runtime kdepim-strigi-plugins kdepimlibs-kio-plugins kdoctools kget kmag kmail kmix kmousetool ksystemlog kubuntu-debug-installer language-pack-kde-ar language-pack-kde-en libakonadi-calendar4 libakonadi-contact4 libakonadi-kcal4 libakonadi-kde4 libakonadi-kmime4 libcalendarsupport4 libincidenceeditorsng4 libk3b6 libkabc4 libkactivities-bin libkactivities6 libkalarmcal2 libkatepartinterfaces4 libkcal4 libkcalutils4 libkcddb4 libkde3support4 libkdepim4 libkdepimdbusinterfaces4 libkdewebkit5 libkemoticons4 libkfile4 libkgapi0 libkhtml5 libkio5 libkleo4 libkmanagesieve4 libkmediaplayer4 libknewstuff3-4 libknotifyconfig4 libkolab0 libkonq-common libkonq5abi1 libkontactinterface4 libkparts4 libkpimidentities4 libkpimtextedit4 libkpimutils4 libkprintutils4 libksieveui4 libktexteditor4 libktnef4 libktorrent4 libkworkspace4abi2 libkxmlrpcclient4 libmailcommon4 libmailimporter4 libmailtransport4 libmessagecomposer4 libmessagecore4 libmessagelist4 libmessageviewer4 libmicroblog4 libnepomuk4 libnepomukcore4abi1 libnepomukquery4a libnepomuksync4 libnepomukutils4 libplasma3 libsoprano4 libtemplateparser4 libvirtodbc0 nepomuk-core odbcinst odbcinst1debian2 plasma-scriptengine-javascript qapt-batch soprano-daemon virtuoso-minimal 0 upgraded, 0 newly installed, 89 to remove and 0 not upgraded. After this operation, 126 MB disk space will be freed. Do you want to continue [Y/n]? Other info: Why do the "iodbc" and "libmyodbc" packages conflict with each other? The root problem is that I need to use a new feature introduced in the latest MySQL Workbench builds (DB Migration) which uses odbc for that matter. Here is what Mysql doc says about it : Linux The Migration Wizard uses iODBC as a driver manager for all of its ODBC connections in Linux. This may give you some troubles because most Linux distributions provide ODBC drivers compiled against unixODBC. This is another driver manager not supported by MySQL Workbench so you won’t be able to use those drivers unless you compile them against iODBC. Here’s what you should do. Make sure that you have iODBC installed. If you are using Debian, Ubuntu or another Debian based distro, type this command in your terminal: $ sudo apt-get install iodbc libiodbc2-dev libpq-dev libssl-dev For RPM based distros (RedHat, Fedora, etc.) type this command instead of the previous one: $ sudo yum install iodbc iodbc-dev libpqxx-devel openssl-devel Now we need to install the PostgreSQL ODBC drivers. Download the psqlODBC source tarball from here. Use the latest version available for download. As of this writing the latest version corresponds to the file psqlodbc-09.01.0200.tar.gz. Extract this tarball to a directory in your hard drive and open a terminal and cd into that directory. Type this in the terminal window: $ ./configure --with-iodbc --enable-pthreads $ make $ sudo make install Verify that you have the file psqlodbcw.so in the /usr/local/lib directory. This package seems to pose the problem probably: dpkg -s odbcinst1debian2 Package: odbcinst1debian2 Status: install ok installed Priority: optional Section: libs Installed-Size: 241 Maintainer: Ubuntu Developers <[email protected]> Architecture: amd64 Multi-Arch: same Source: unixodbc Version: 2.2.14p2-5ubuntu4 Replaces: unixodbc (<< 2.1.1-2) Depends: libc6 (>= 2.14), libltdl7 (>= 2.4.2), odbcinst Pre-Depends: multiarch-support Breaks: libiodbc2, libmyodbc (<< 5.1.6-2), odbc-postgresql (<< 1:09.00.0310-1.1), tdsodbc (<< 0.82-8) Conflicts: odbcinst1, odbcinst1debian1 Description: Support library for accessing odbc ini files This package contains the libodbcinst library from unixodbc, a library used by ODBC drivers for reading their configuration settings from /etc/odbc.ini and ~/.odbc.ini. . Also contained in this package are the driver setup plugins, which describe the features supported by individual ODBC drivers. Homepage: http://www.unixodbc.org/ Original-Maintainer: Steve Langasek <[email protected]> I have no broken packages:

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• Messaging technologies between applications ?

  - by Samuel

  Recently, I had to create a program to send messages between two winforms executable. I used a tool with simple built-in functionalities to prevent having to figure out all the ins and outs of this vast quantity of protocols that exist. But now, I'm ready to learn more about the internals difference between each of theses protocols. I googled a couple of them but it would be greatly appreciate to have a good reference book that gives me a clean idea of how each protocol works and what are the pros and cons in a couple of context. Here is a list of nice protocols that I found: Shared memory TCP List item Named Pipe File Mapping Mailslots MSMQ (Microsoft Queue Solution) WCF I know that all of these protocols are not specific to a language, it would be nice if example could be in .net. Thank you very much.

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• Why is design by contract considered an alternative to the pseudo programming process?

  - by zoopp

  Right now I'm reading Code Complete by Steve McConnell and in chapter 9 he talks about the Pseudo Programming Process (PPP). From what I've understood, the PPP is a way of programming in which the programmer first writes the pseudo code for the routine he's working on, then refines it up to the point where pretty much each pseudo code line can be implemented in 1-3 lines of code, then writes the code in the designated programming language and finally the pseudo code is saved as comments for the purpose of documenting the routine. In chapter 9.4 the author mentions alternatives to the PPP, one of which is 'design by contract'. In design by contract you basically assert preconditions and postconditions of each routine. Now why would that be considered an alternative? To me it seems obvious that I should use both techniques at the same time and not chose one over the other.

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• Difference between $ and # in ADF/JSF/JSP

  - by pavan.pvj

  Found this one interesting. So, picked it from one of the books and posting here.JSP 2.1 and JSF 1.2 - both of them use a unified Expression language. One major and the most obvious difference is between $ and #. JSP 2.1 uses $ and JSF 1.2 uses # in an EL. $ - immediate evaluation# - deferred evaluation$ - $ syntax executes expressions eagerly/immediately, which means that the result is returned immediately when the page renders.# - # syntax defers the expression evaluation to a point defined by the implementing technology. In general, JSF uses deferred EL evaluation because of its multiple lifecycle phases in which events are handled. To ensure the model is prepared before the values are accessed by EL, it must defer EL evaluation until the appropriate point in the life cycle.Note: This is picked up from Oracle Fusion Developer Guide (ISBN: 9780071622547). There is also a very good article here:http://java.sun.com/products/jsp/reference/techart/unifiedEL.html

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• Are there any companies using BDD in a .NET environment?

  - by Nick

  I've seen BDD in action (in this case using SpecFlow and Selenium in a .NET environment) for a small test project. I was very impressed - mainly due to the fact that the language used to specify the acceptance tests meant they engaged with the product owner much more easily. I'm now keen to bring this into my current organisation. However I'm asked 'who else uses this?' and 'show me some case-studies'. Unfortunately I cannot find any 'big names' (or even 'small names' for that matter!) of companies who are actively using BDD. I have two questions really: Is BDD adopted by companies out there? Who are they? How can BDD be implemented in an agile .NET environment and are there any significant drawbacks to doing it?

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• Python interview questions

  - by Andy

  I am going to interview within two weeks for an internship that would involve Python programming. Can anyone suggest what possible areas should I polish? I am looking for commonly asked stuff in interviews for Python openings. Apart from the fact that I have already been doing the language for over a year now, I fail to perceive what they can ask me. Like for a C or C++ interview, there are lots of questions ranging from reversing of strings to building linked lists, but for a Python interview, I am clueless. Personal experiences and/ or suggestions are welcomed.

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• Wine 1.2 crash after I start Mega 5.0

  - by Tomáš Šíma

  I installed Mega 5.0 by running "sudo sh MEGA5_Setup_deb_v2.sh" The application downloaded wine 1.2 as mega requires in order to work under Ubuntu. However every time I start the application through the icon provided, wine crashes asking me to send/save bug report, the problem is that if I choose to do so, megas starting window pops up covering the bug report window leaving me unable to do anything (as it won't move) The only solution I have come up with is to log out and log back in, as I cancels wine. I beg you following: Please post detailed step by step instructions how to deal with said problem Tell me if forceful log out, can damage computer of any of my data Please forgive me my weak English as it is not my native language. Also forgive me my weak skills concerning Ubuntu usage as I have me forced to switch to Ubuntu this very day. Thank you.

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• Saving game data to server [on hold]

  - by Eugene Lim

  What's the best method to save the player's data to the server? Method to store the game saves Which one of the following method should I use ? Using a database structure(e.g.. mySQL) to store the game data as blobs? Using the server hard disk to store the saved game data as binary data files? Method to send saved game data to server What method should I use ? socketIO web socket a web-based scripting language to receive the game data as binary? for example, a php script to handle binary data and save it to file Meta-data I read that some games store saved game meta-data in database structures. What kind of meta data is useful to store?

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• Scripting a sophisticated RTS AI with Lua

  - by T. Webster

  I'm planning to develop a somewhat sophisticated RTS AI (eg see BWAPI). have experience programming, but none in game development, so it seems easiest to start by scripting the AI of an existing game I've played, Warhammer 40k: Dawn of War (2004). As far as I can tell, the game AI is scripted with some variant of Lua (by the file extension .ai or .scar). The online documentation is sparse and the community isn't active anymore. I'd like to get some idea of the difficulty of this undertaking. Is it practical with a scripting language like Lua to develop a RTS AI that includes FSMs, decision trees, case-based reasoning, and transposition tables? If someone has any experience scripting Dawn of War, that would also help.

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• Would knowing Python help with creating iPhone applications?

  - by Josh

  Here is what the apple site says: With Snow Leopard, Mac OS X makes it easy to use scripting languages as full application development tools. Snow Leopard ships with support for the RubyCocoa Bridge and the PyObjC bridge. These two bridges give developers access not only to system APIs, but to Cocoa frameworks such as AppKit and Core Data, enabling you to build fully native Mac OS X applications in Ruby or Python. The RubyCocoa and PyObjC bridges allow you to freely mix code written in Objective-C with code written in the scripting language. You can quickly build prototypes and then optimise by implementing performance-critical pieces in Objective-C. How could Python help in this case?

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• Additional useful skill?

  - by Sergey

  Almost each language has some additional technology or skill or whatever which can work in a pair with it but still be something fresh. For example, Java + Flex. It's a good pair - those who learn Java and want something both useful and new may try Flex. What are "pairs" for the most popular languages(Java, C#, C++, etc.)? PS: Most people advise learning functional programming as an additional skill but this is very fuzzy. They talk about such abstract things as wide programming perspective and other things, but you can hardly say whether these functional skills will be really needed. Yeah, maybe some basics of it can be useful, but serious learning of LISP seems not perspective.

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• Outdoor Programming Jobs...

  - by Rodrick Chapman

  Are there any kinds of jobs that require programming (or at least competency) but take place outdoors for a significant portion of the time? As long as I'm fantasizing, an ideal job would involve programming in a high level language like Haskell, F#, or Scala* for, say, 50% of the time and doing something like digging an irrigation trench the rest of the time. My background: I triple majored in mathematics, philosophy, and history (BS/BA) and have been working as a web developer for the past six years. I love hacking but I'm feeling a bit burned out. *I only chose these languages as examples since, ideally, I'd want to work among high caliber people... but it really doesn't matter.

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• Monitoring Events in your BPEL Runtime - RSS Feeds?

  - by Ramkumar Menon

  @10g - It had been a while since I'd tried something different. so here's what I did this week!Whenever our Developers deployed processes to the BPEL runtime, or perhaps when a process gets turned off due to connectivity issues, or maybe someone retired a process, I needed to know. So here's what I did. Step 1: Downloaded Quartz libraries and went through the documentation to understand what it takes to schedule a recurring job. Step 2: Cranked out two components using Oracle JDeveloper. [Within a new Web Project] a) A simple Java Class named FeedUpdater that extends org.quartz.Job. All this class does is to connect to your BPEL Runtime [via opmn:ormi] and fetch all events that occured in the last "n" minutes. events? - If it doesn't ring a bell - its right there on the BPEL Console. If you click on "Administration > Process Log" - what you see are events.The API to retrieve the events is //get the locator reference for the domain you are interested in.Locator l = .... //Predicate to retrieve events for last "n" minutesWhereCondition wc = new WhereCondition(...) //get all those events you needed.BPELProcessEvent[] events = l.listProcessEvents(wc); After you get all these events, write out these into an RSS Feed XML structure and stream it into a file that resides either in your Apache htdocs, or wherever it can be accessed via HTTP.You can read all about RSS 2.0 here. At a high level, here is how it looks like. <?xml version = '1.0' encoding = 'UTF-8'?><rss version="2.0">  <channel>    <title>Live Updates from the Development Environment</title>    <link>http://soadev.myserver.com/feeds/</link>    <description>Live Updates from the Development Environment</description>    <lastBuildDate>Fri, 19 Nov 2010 01:03:00 PST</lastBuildDate>    <language>en-us</language>    <ttl>1</ttl>    <item>      <guid>1290213724692</guid>      <title>Process compiled</title>      <link>http://soadev.myserver.com/BPELConsole/mdm_product/administration.jsp?mode=processLog&amp;processName=&amp;dn=all&amp;eventType=all&amp;eventDate=600&amp;Filter=++Filter++</link>      <pubDate>Fri Nov 19 00:00:37 PST 2010</pubDate>      <description>SendPurchaseOrderRequestService: 3.0 Time : Fri Nov 19 00:00:37                   PST 2010</description>    </item>   ...... </channel> </rss> For writing ut XML content, read through Oracle XML Parser APIs - [search around for oracle.xml.parser.v2] b) Now that my "Job" was done, my job was half done. Next, I wrote up a simple Scheduler Servlet that schedules the above "Job" class to be executed ever "n" minutes. It is very straight forward. Here is the primary section of the code.           try {        Scheduler sched = StdSchedulerFactory.getDefaultScheduler();         //get n and make a trigger that executes every "n" seconds        Trigger trigger = TriggerUtils.makeSecondlyTrigger(n);        trigger.setName("feedTrigger" + System.currentTimeMillis());        trigger.setGroup("feedGroup");                JobDetail job = new JobDetail("SOA_Feed" + System.currentTimeMillis(), "feedGroup", FeedUpdater.class);        sched.scheduleJob(job,trigger);         }catch(Exception ex) {            ex.printStackTrace();            throw new ServletException(ex.getMessage());        } Look up the Quartz API and documentation. It will make this look much simpler.   Now that both components were ready, I packaged the Application into a war file and deployed it onto my Application Server. When the servlet initialized, the "n" second schedule was set/initialized. From then on, the servlet kept populating the RSS Feed file. I just ensured that my "Job" code keeps only 30 latest events within it, so that the feed file is small and under control. [a few kbs]   Next I opened up the feed xml on my browser - It requested a subscription - and Here I was - watching new deployments/life cycle events all popping up on my browser toolbar every 5 (actually n)  minutes!   Well, you could do it on a browser/reader of your choice - or perhaps read them like you read an email on your thunderbird!.      

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• Can't use my keyboard nor the touch pad while installing on a Dell Vostro 1510

  - by Kaushal Singh

  I am stuck with a very annoying problem which does not allow me to even install Ubuntu on my laptop (Dell Vostro 1510). In a simple walk through of the problematic scenario... I boot the Ubuntu from a boot able CD. I got to a point where it ask for the language options, I select the English as my option using arrows keys and press enter. Then the option come where a.) try from the live cd b.) install ubuntu c.) etc etc Is needed to be selected. For which I press enter. Once I press enter... In any of the next steps of installing Ubuntu, my keypad and touch pad does not work. P.S.: My Batteries are completely dried Up... Can't use batteries. Does this problem has anything to do with batteries?

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• Turn-based Strategy Loop

  - by Djentleman

  I'm working on a strategy game. It's turn-based and card-based (think Dominion-style), done in a client, with eventual AI in the works. I've already implemented almost all of the game logic (methods for calculations and suchlike) and I'm starting to work on the actual game loop. What is the "best" way to implement a game loop in such a game? Should I use a simple "while gameActive" loop that keeps running until gameActive is False, with sections that wait for player input? Or should it be managed through the UI with player actions determining what happens and when? Any help is appreciated. I'm doing it in Python (for now at least) to get my Python skills up a bit, although the language shouldn't matter for this question.

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• Patrick Curran Session-Keynote at DOAG 2012

  - by Heather VanCura

  Patrick Curran, Chair of the  Java Community Process (JCP) and Director of the JCP Program Management Office, will be speaking this week at the DOAG 2012 event in Nuremberg Germany. Keynote Java: Restructuring the Java Community ProcessNovember, 22nd | 09:00-09:45 am The Java Community Process (JCP) plays a critical role in the evolution of Java.  This keynote will explain how the JCP is organized and how interested members of the Java community - commercial organizations, non-profits, Java user-groups, and individual developers - work together to advance the Java language and platforms. It will then discuss recent and upcoming changes to the JCP's structure and operating processes, and will explain how these changes ('JCP.next') will make the organization more efficient and will ensure that its work is carried out in a more open and more transparent manner.

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• CRM + Invoicing/Billing + Ticketing for a small web design company

  - by Mike

  Hi everyone, I am currently using ActiveCollab but it lacks the typical CRM features. I can't even keep notes about a customer saved in one place. What I am looking for is a simple but efficient CRM application that allows me to store all the (potential) customers along with their phone calls noted down, contracts, agreements. On the billing end, I should be able to keep track of invoices and payments, along with a bit of sales reports. A great extra would be a ticket support feature but not really necessary I looked at VTiger and SugarCRM at first. Though, they look too complex on the sales/campaigns end but completely lack the billing side. Do you have some good apps/services to suggest? :) Any programming language or OS would do. Both paid and free. Thanks Mike

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• Teaching programming to a non-CS graduate

  - by Shahzada

  I have a couple of friends interested in computer programming, but they're non-CS graduates; some of them have very little experience in software testing field (some of them took some basic software testing courses). I am going to be working with them on teaching basic computer programming, and computer science fundamentals (data structures etc). My questions are; What language should I start with? What are essential computer science topics that I should cover before jumping them into computer programming? What readings can I incorporate to make the topic interesting and non-overwhelming? If we want to spend a year on it, what topics should take priority and must be covered in 12 months? Again, these are non computer science folks, and I want to keep the learning as much fun as possible. Thanks everyone.

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• Over a million COBOL programmers in the world?

  - by Lucas McCoy

  I think I heard on a previous StackOverflow podcast that COBOL was used as the programming language for traffic lights (or something like that), so this got me interested. I did a quick Google search and found this little article: Today, Cobol is everywhere, yet largely unheard of by millions of people who interact with it daily when using the ATM, stopping at traffic lights or buying a product online. The statistics on Cobol attest to its huge influence on the business world: There are over 220 billion lines of Cobol in existence, a figure which equates to about 80 per cent of the world’s actively used code. There over a million Cobol programmers in the world. There are 200 times as many Cobol transactions that take place each day than Google searches. I didn't really trust the source seeing as how it's on some random PHPBB forum. So how accurate are these figures? Are there really 220 billion lines of COBOL? I assume a few people/companies still use COBOL, but how many?

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• Portal Ported to a Graphing Calculator

  - by Jason Fitzpatrick

  It’s not exactly a 3D-rendered GPU-burner, but this calculator-based version of Portal still features the same portal-jumping tricks that delighted players in the original game. Built using Axe Parser, an advanced programming language for graphing calculators, Portal: Prelude is part an experiment in pushing the limits of Axe Parser and part long standing tradition of porting popular video games to graphing calculators. You can read more about Axe Parser and the many games and program projects under development using it here. [via Geeks Are Sexy] How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere

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• The clock hands of the buffer cache

  - by Tony Davis

  Over a leisurely beer at our local pub, the Waggon and Horses, Phil Factor was holding forth on the esoteric, but strangely poetic, language of SQL Server internals, riddled as it is with 'sleeping threads', 'stolen pages', and 'memory sweeps'. Generally, I remain immune to any twinge of interest in the bowels of SQL Server, reasoning that there are certain things that I don't and shouldn't need to know about SQL Server in order to use it successfully. Suddenly, however, my attention was grabbed by his mention of the 'clock hands of the buffer cache'. Back at the office, I succumbed to a moment of weakness and opened up Google. He wasn't lying. SQL Server maintains various memory buffers, or caches. For example, the plan cache stores recently-used execution plans. The data cache in the buffer pool stores frequently-used pages, ensuring that they may be read from memory rather than via expensive physical disk reads. These memory stores are classic LRU (Least Recently Updated) buffers, meaning that, for example, the least frequently used pages in the data cache become candidates for eviction (after first writing the page to disk if it has changed since being read into the cache). SQL Server clearly needs some mechanism to track which pages are candidates for being cleared out of a given cache, when it is getting too large, and it is this mechanism that is somewhat more labyrinthine than I previously imagined. Each page that is loaded into the cache has a counter, a miniature "wristwatch", which records how recently it was last used. This wristwatch gets reset to "present time", each time a page gets updated and then as the page 'ages' it clicks down towards zero, at which point the page can be removed from the cache. But what is SQL Server is suffering memory pressure and urgently needs to free up more space than is represented by zero-counter pages (or plans etc.)? This is where our 'clock hands' come in. Each cache has associated with it a "memory clock". Like most conventional clocks, it has two hands; one "external" clock hand, and one "internal". Slava Oks is very particular in stressing that these names have "nothing to do with the equivalent types of memory pressure". He's right, but the names do, in that peculiar Microsoft tradition, seem designed to confuse. The hands do relate to memory pressure; the cache "eviction policy" is determined by both global and local memory pressures on SQL Server. The "external" clock hand responds to global memory pressure, in other words pressure on SQL Server to reduce the size of its memory caches as a whole. Global memory pressure – which just to confuse things further seems sometimes to be referred to as physical memory pressure – can be either external (from the OS) or internal (from the process itself, e.g. due to limited virtual address space). The internal clock hand responds to local memory pressure, in other words the need to reduce the size of a single, specific cache. So, for example, if a particular cache, such as the plan cache, reaches a defined "pressure limit" the internal clock hand will start to turn and a memory sweep will be performed on that cache in order to remove plans from the memory store. During each sweep of the hands, the usage counter on the cache entry is reduced in value, effectively moving its "last used" time to further in the past (in effect, setting back the wrist watch on the page a couple of hours) and increasing the likelihood that it can be aged out of the cache. There is even a special Dynamic Management View, sys.dm_os_memory_cache_clock_hands, which allows you to interrogate the passage of the clock hands. Frequently turning hands equates to excessive memory pressure, which will lead to performance problems. Two hours later, I emerged from this rather frightening journey into the heart of SQL Server memory management, fascinated but still unsure if I'd learned anything that I'd put to any practical use. However, I certainly began to agree that there is something almost Tolkeinian in the language of the deep recesses of SQL Server. Cheers, Tony.

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• Why is there a "new" keyword in Go?

  - by dystroy

  I'm still puzzled as why we have new in Go. &Thing{} is as clear and concise as new(Thing) to Go coders and it uses only constructs you often use elsewhere. It's also more extensible as you might change it to &Thing{3} or &Thing{Feets:7}. In my opinion, having a supplementary keyword is costly, it makes the language more complex and adds to what you must know. And it might mask to newcomers what's behind instantiating a struct. It also makes one more reserved word. So what's the reasoning behind new ? Is it something useful ? Should we use it ?

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• Links to C++ documentation

  - by Daniel Moth

  After a recent talk I gave on C++ AMP, one attendee was complaining that they were not familiar with lambdas and another found templates hard to parse. In case you are in the same boat, I thought I'd gather some essential reading material for you (also gives me one link to use in the future for referring people to ;-) Lambdas are available (in some shape or form) in all modern languages, so do yourself a favor and learn about them: Lambda Expressions in C++ (and also syntax and examples) Watch Herb Sutter's full length session on lambdas at PDC 2010 Templates, have been around in modern languages for even longer than lambdas (e.g. Generics in .NET), so again go dive in: Templates topic with full table of contents linking to subtopics In fact, why don't you refresh your knowledge and read the entire msdn C++ Language Reference – that's what I am doing! If you are looking to keep up to date with what is happening in the C++ world, stay tuned on the Visual C++ team (aka WinC++ team) blog and ask questions in the C++ forums. Comments about this post welcome at the original blog.

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• In the Groove: PASS Board Year 1, Q3

  - by Denise McInerney

  It's nine months into my first year on the PASS Board and I feel like I've found my rhythm. I've accomplished one of the goals I set out for the year and have made progress on others. Here's a recap of the last few months. Anti-Harassment Policy & Process Completed In April I began work on a Code of Conduct for the PASS Summit. The Board had several good discussions and various PASS members provided feedback. You can read more about that in this blog post. Since the document was focused on issues of harassment we renamed it the "Anti-Harassment Policy " and it was approved by the Board in August. The next step was to refine the guideliness and process for enforcement of the AHP. A subcommittee worked on this and presented an update to the Board at the September meeting. You can read more about that in this post, and you can find the process document here. Global Growth Expanding PASS' reach and making the organization relevant to SQL Server communities around the world has been a focus of the Board's work in 2012. We took the Global Growth initiative out to the community for feedback, and everyone on the Board participated, via Twitter chats, Town Hall meetings, feedback forums and in-person discussions. This community participation helped shape and refine our plans. Implementing the vision for Global Growth goes across all portfolios. The Virtual Chapters are well-positioned to help the organization move forward in this area. One outcome of the Global Growth discussions with the community is the expansion of two of the VCs from country-specific to language-specific. Thanks to the leadership in Brazil & Mexico for taking the lead here. I look forward to continued success for the Portuguese- and Spanish-language Virtual Chapters. Together with the Global Chinese VC PASS is off to a good start in making the VC's truly global. Virtual Chapters The VCs continue to grow and expand. Volunteers recently rebooted the Azure and Virutalization VCs, and a new  Education VC will be launching soon. Every week VCs offer excellent free training on a variety of topics. It's the dedication of the VC leaders and volunteers that make all this possible and I thank them for it. Board meeting The Board had an in-person meeting in September in San Diego, CA.. As usual we covered a number of topics including governance changes to support Global Growth, the upcoming Summit, 2013 events and the (then) upcoming PASS election. Next Up Much of the last couple of months has been focused on preparing for the PASS Summit in Seattle Nov. 6-9. I'll be there all week;  feel free to stop me if you have a question or concern, or just to introduce yourself.  Here are some of the places you can find me: VC Leaders Meeting Tuesday 8:00 am the VC leaders will have a meeting. We'll review some of the year's highlights and talk about plans for the next year Welcome Reception The VCs will be at the Welcome Reception in the new VC Lounge. Come by, learn more about what the VCs have to offer and meet others who share your interests. Exceptional DBA Awards Party I'm looking forward to seeing PASS Women in Tech VC leader Meredith Ryan receive her award at this event sponsored by Red Gate Session Presentation I will be presenting a spotlight session entitled "Stop Bad Data in Its OLTP Tracks" on Wednesday at 3:00 p.m. Exhibitor Reception This reception Wednesday evening in the Expo Hall is a great opportunity to learn more about tools and solutions that can help you in your job. Women in Tech Luncheon This year marks the 10th WIT Luncheon at PASS. I'm honored to be on the panel with Stefanie Higgins, Kevin Kline, Kendra Little and Jen Stirrup. This event is on Thursday at 11:30. Community Appreciation Party Thursday evening don't miss this event thanking all of you for everthing you do for PASS and the community. This year we will be at the Experience Music Project and it promises to be a fun party. Board Q & A Friday  9:45-11:15  am the members of the Board will be available to answer your questions. If you have a question for us, or want to hear what other members are thinking about, come by room 401 Friday morning.

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