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• Should I use C++0x Features Now?

  - by svu2g

  With the official release of VS 2010, is it safe for me to start using the partially-implemented C++0x feature set in my new code? The features that are of interest to me right now are both implemented by VC++ 2010 and recent versions of GCC. These are the only two that I have to support. In terms of the "safety" mentioned in the first sentence: can I start using these features (e.g., lambda functions) and still be guaranteed that my code will compile in 10 years on a compiler that properly conforms to C++0x when it is officially released? I guess I'm asking if there is any chance that VC++ 2010 or GCC will end up like VC++ 6; it was released before the language was officially standardized and consequently allowed grossly ill-formed code to compile. After all, Microsoft does say that "10 is the new 6". ;)

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• Is there a suitable public license for my needs (see body)?

  - by Ivan

  I would like to license my project with the flowing conditions: Personal and educational usage of the program and its source codes is to be free. In case of publishing of derivative works the original work and author (me) must be mentioned (incl. textual link to my website in a not-very-far-hidden place) and the derivative work must have different name. A derivative work can be closed-source. In every case of commercial (when the end-user is a commercial body (as a company (expect of non-profit companies), an individual entrepreneur or government office)) usage of my work or any of derivative works made by anyone, the end-user, service provider or the derivative author must buy a commercial license from me. I mean no guarantees or resoinsibilities, either expressed or implied... (except the case when one explicitly purchases a support service contract from me and the particular contract specifies a responsibility). Is there a known common license for this case? May it be OSI-approved?

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• How do I tell NHibernate to load a component as not null even when all its properties are null?

  - by SharePoint Newbie

  Hi, I have a Date class which wraps over the DateTime? class (aids in mocking DateTime.Now, our domain ,etc). The Date class class only has one protected property : DateTime? date public class Date { protected DateTime? date; } // mapping in hbm <component name="CompletedOn"> <property column="StartedOn" name="date" access="field" not-null="false" /> </component> From the nhibernate docs: Like all value types, components do not support shared references. The null value semantics of a component are ad hoc. When reloading the containing object, NHibernate will assume that if all component columns are null, then the entire component is null. This should be okay for most purposes. Can I override this behaviour? I want my Date class to be instantiated even if date is null. Thanks,

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• Getting user data from Active Directory using PL/SQL

  - by David Neale

  I had a discussion today regarding an Oracle procedure I wrote some time ago. I wanted to get 7500 user email addresses from Active Directory using PL/SQL. AD will return a maximum of 1000 rows and the LDAP provider used by Oracle will not support paging. Therefore, my solution was to filter on the last two characters of the sAMAccountName (*00,*01,*02...etc.). This results in 126 queries (100 for account names ending in digits, 26 for those ending in a letter...this was sufficient for my AD setup). The person I was speaking to (it was a job interview by the way) said he could have done it a better way, but he would not tell me what that method was. Could anybody hazard a guess at what this method was?

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• iPhone write to file (alternative directory)

  - by strider2k

  New to iPhone 3.2, Apple introduced File-Sharing support. Details can be found at https://developer.apple.com/iphone/library/releasenotes/General/WhatsNewIniPhoneOS/Articles/iPhoneOS3_2.html#//apple_ref/doc/uid/TP40009337-SW1 . Now, most examples floating around in the web demonstrates writing to the documents directory. What if I want to write files from my app but I don't want the user to be able to see it via iTunes? I'm looking at the Files and Networking section of the iPhone OS Programming Guide and I'm unsure what would be a good alternative to the documents directory for writing files to hide from the user and not be rejected by Apple's review team.

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• Flagging complex properties as Browsable in the compact framework

  - by Rowland Shaw

  I'm working on a compact framework project and whilst most of the properties are fairly straight forward (I.e. mark them as browsable in the xmta file), I'm struggling to get this to work for more complex types - on the full framework, I'd just implement a custom TypeConverter and go from there, but it seems the CF TypeConverter doesn't have any of the type converting methods to override, which has left me a little stuck? It probably should be blindingly obvious but how would I go about supporting design time property support for more complex types (for the sake of argument, assume I can already convert to and from a string, but I'd prefer to keep this strongly typed, rather than just pretend it was a string and parse it both ways. Where should I be looking to achieve this?

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• Download data in background with iOS4

  - by Sagar

  As per the latest update of Kindle V2.5, it has support of "continue downloading books while the app is in the background on iOS 4 devices". How is it possible to download content in background? As per the iOS multitasking documentation, only audio, voip & location updates are possible in background. And I've also maken sure that NSURLConnection doesn't download new data work while app goes background. Then how's it possible with Kindle app? Edit: I haven't checked Kindle App in iOS4 multitasking enabled device. So if anyone let me (& community) know what exactly Kindle app does to download, that would be very much helpful.

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• What information do you capture your software crashes in the field?

  - by Russ

  I am working on rewriting my unexpected error handling process, and I would like to ask the community: What information do you capture both automatic, and manually, when software you have written crashes? Right now, I capture a few items, some of which are: Automatic: Name of app that crashed Version of app that crashed Stack trace Operating System version RAM used by the application Number of processors Screen shot: (Only on non-public applications) User name and contact information (from Active Directory) Manual: What context is the user in (i.e.: what company, tech support call number, RA number, etc...) When did the user expect to happen? (Typical response: "Not to crash”) Steps to reproduce. What other bits of information do you capture that helps you discover the true cause of an applications problem, especially given that most users simply mash the keyboard when asked to tell you what happened. For the record I’m using C#, WPF and .NET version 4, but I don’t necessarily want to limit myself to those. Related: http://stackoverflow.com/questions/1226671/what-to-collect-information-when-software-crashes Related: http://stackoverflow.com/questions/701596/what-should-be-included-in-the-state-of-the-art-error-and-exception-handling-stra

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• Is there are standard way to store a database schema outside a python app

  - by acrosman

  I am working on a small database application in Python (currently targeting 2.5 and 2.6) using sqlite3. It would be helpful to be able to provide a series of functions that could setup the database and validate that it matches the current schema. Before I reinvent the wheel, I thought I'd look around for libraries that would provide something similar. I'd love to have something akin to RoR's migrations. xml2ddl doesn't appear to be meant as a library (although it could be used that way), and more importantly doesn't support sqlite3. I'm also worried about the need to move to Python 3 one day given the lack of recent attention to xml2ddl. Are there other tools around that people are using to handle this?

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• Database table design vs. ease of use.

  - by Gastoni

  I have a table with 3 fields: color, fruit, date. I can pick 1 fruit and 1 color, but I can do this only once each day. examples: red, apple, monday red, mango, monday blue, apple, monday blue, mango, monday red, apple, tuesday The two ways in which I could build the table are: 1.- To have color, fruit and date be a composite primary key (PK). This makes it easy to insert data into the table because all the validation needed is done by the database. PK color PK fruit PK date 2.- Have and id column set as PK and then all the other fields. Many say thats the way it should be, because composite PKs are evil. For example, CakePHP does no support them. PK id color fruit date Both have advantages. Which would be the 'better' approach?

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• lfs 7.2 compilation of glibc 2.16.0

  - by avinash

  I am making an linux system following the procedure in lfs. But while i was following the fifth step(i.e. the one before make) on this page, i get an error at the last. configure: error: linker with -z relro support required Now after this if i call make i get an error make: *** No targets specified and no makefile found. Stop. I am running this on a ubuntu 12.04 machine. How to fix this error?

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• SQL server 2055 remote connection problem, cannot solve it help please thank you

  - by user287745

  note:- if this question does not fit this site please do not just close it but also redirect the question to the fitting sister site, thank you" the steps taken and the error are mentioned please help, i am stuck here! installed sql server 2005 express on both computers installed sql server management studio express on both computers ran each management studio and connect to instance sqlserver using windows authentication ( one computer connection example "A-63A9D4D7E7834\SQLEXPRESS" ) created a database in the databases named as "test1" created a few tables with data saved and exit. did everything what this site says " How to configure SQL Server 2005 to allow remote connections" [add h t t p here as spam prevention] ://support.microsoft.com/kb/914277/en-us" but i have just disable the firewalls completely :turn off connecting to A-63A9D4D7E7834 started "SQL Server Management Studio Express" on computer A-63A9D4D7E7834 sever name: "ALL-E425BE6C41D\SQLEXPRESS" authentication: "windows authentication" and CONNECT I GET THE FOLLOWING ERROR Cannot connect to ALL-E425BE6C41D\SQLEXPRESS. ADDITIONAL INFORMATION: Login failed for user 'ALL-E425BE6C41D\Guest'. (Microsoft SQL Server, Error: 18456) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18456&LinkId=20476 BUTTONS: OK HELP

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• How do i create winxp style controls

  - by KoolKabin

  Hi guys, I am trying to make my controls look as cool as xp theme enabled controls like gradient fill background in container controls and colour thames support etc I am not finding a way to start. from where can i start doing it? I am trying to do it in vb.net Edited: EnableXpVisualStyles() I found it to enable visual styles but didn't give me visual thames to apply. So in order to apply thames or colour schemes what should i do? What other commands should i use with combination with it? as I have seen my application giving ugly look even applying that command and other program showing nice loook in my win2003 server

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• Having issues with jquery ui datepicker and IE

  - by Howlingfish

  This works perfectly in Firefox but doesnt work in ie i get the following error "Line: 640 Error: Object doesn't support this property or method" Here is my code <asp:TextBox ID="calendardatedob" CssClass="calendardatedob" runat="server" AccessKey="n" TabIndex="4" MaxLength="40" /><span class="req">*</span> e.g dd/mm/yyyy Here is my jquery $(document).ready(function() { $("#ctl00_PageContent_calendardatedob").datepicker(); }); im referencing these > <script > src="../../assets/js/jquery.min.js" > type="text/javascript"></script> > <script > src="../../assets/js/jquery-ui-1.8.custom.min.js" > type="text/javascript"></script>

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• How to use your computer to save the world?

  - by Francisco Garcia

  Sometimes I miss the "help other people" factor within computer-related fields. However, there are little things that we all can do to make this a better place—beyond trying to eradicate annoying stuff such as Visual Basic. You could join a cloud computing network such as World Community Grid to fight cancer, write a charityware application such as Vim, improve office IT infrastructure to support telecommuting and reduce CO2 emissions, use an ebook reader to save paper, ... What else can we do to help others? Which projects can have the biggest impact?

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• Why shouldn't I use Flash?

  - by acidzombie24

  I heard many times i should avoid flash for my website. Yet no one has told me a good reason. I searched for reasons and i see many that are not true (such as text in flash are not indexable by search engines) or may not necessarily be true or significant enough (eating more bandwidth. Would a JS equivalent be bigger or smaller?). My site uses flash to playback sound (m4a). I dont have to worry about indexing, the back button not working, etc. But i have feeling there may be other reasons. What are reasons i shouldnt use flash on my website. I'll note one, the fact iphone/itouch and mobile devices does not support it. Not a big deal for most sites and is obvious. What are reason to avoid flash on my site?

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• Is it possible to listen to relational database update?

  - by Morgan Cheng

  Is it possible to listen to relation database update? For example, my web app want to send data update to client through Comet technology. I can have the program to poll the database periodically, but that would not be performant and scalable. If app can hood to a "event handler" of database, then app can get notification every time given database table data is updated. This sounds more promising, but I didn't find any concrete example for it. This is listener pattern. Does common relational database support such feature?

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• ASP.Net MVC - which is the best approach for multi select grouping using JQuery Dialog

  - by Rajeesh

  This is my scenario I have an view(page) with list of items, a user could select single or multiple items from this page and click on a "Add to Group" button. Then a modal dialog(JQuery dialog) will be shown, from that he could select group, then press the add button. Which causes the items selected in the parent page is added to that particular group. So, which is the best way to pass the selected items to the modal pop-up? Though the query string ? - what happens if the no:of items selected is large, will the url support that much characters Keep the list in the parent page in a javascript variable and return the selected group from the modal pop-up? Or is there is any other better option? Thanks, Rajeesh

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• Invoke or BeginInvoke cannot be called on a control until the window handle has been created

  - by blade3

  I am trying to install SQL Server 2008 Developer Edition x64 on a Windows Server 2008 VM. I run the installer for a standalone installation and this works fine for the setup support rules bit. That passes ok but then I get this error: TITLE: SQL Server Setup failure. SQL Server Setup has encountered the following error: Invoke or BeginInvoke cannot be called on a control until the window handle has been created.. BUTTONS: OK How can I resolve this? I am getting 2008 R2 CTP but this is just a CTP. My download is from DreamSpark. Thanks

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• Antialiased fonts in emacs 23.2 on Windows

  - by Damyan

  I'm having trouble getting antialiased fonts to work correct in emacs 23.2, to the extent that it appears that it doesn't actually support antialised fonts. If I do the following in emacs 23.1: (set-face-font 'default "DejaVu Sans Mono-9.0:antialias=subpixel") (describe-font nil) Then this reports the full name as "DejaVu Sans Mono-9.0:antialias=subpixel", and the font looks nice and smooth. However, doing the same thing in emacs 23.2 gives the full name as "DejaVu Sans Mono-9.0" and the font looks nasty and chunky. Is there something I'm doing wrong?

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• Has anyone been successful at a assembler based led blinker for an xcore?

  - by dwelch

  I am liking the http://www.xmos.com chips but want to get a lower level understanding of what is going on. Basically assembler. I am trying to sort out something as simple as an led blinker, set the led, count to N clear the led, count to N, loop forever. Sure I can disassemble a 10 line XC program, but if you have tried that you will see there is a lot of bloat in there that is in every program, what bits are to support the compiler output and what bits are actually setting up the gpio?

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• Maven Quick-start Guide

  - by Dave

  I'm tasked with getting a development environment set up for a new program at work. The lead has chosen Eclipse as the IDE for its OSGi support and Maven as the build utility. I've struggled through getting Maven integrated with Eclipse and I'm grudgingly declaring success and moving forward. My question: is there any sort of guide to getting started with Maven? I've found boatloads of documentation, most all of it very, very detailed and simultaneously unhelpful. I downloaded a 300+ page book that goes into excruciating detail about POMs, but doesn't tell you how to initialize a project from existing source. Hopefully, this question will result in a pointer to something I missed or a collection of links for those who follow me.

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• Is iOS6 simulator buggy when deleting applications?

  - by davsan

  Frequently, when I try to delete an app on the iOS 6 simulator that comes with Xcode 4.5, the simulator freezes. What I do is just long press on the app. Delete dialog doesn't come up and the icons keep on wiggling. Quitting and re-opening the simulator does not help to delete the app. I've tried to delete the app's folder from /Library/Application Support/iPhone Simulator/5.1/Applications folder. Sometimes this helps but sometimes even this doesn't delete the icon from the simulator. This behavior is independent of the iOS version or the device model. It's the same whichever model/iOS I choose. The only thing that helps is using the Reset Contents and Settings option of the simulator. Do you experience the same frustration? If so, have you figured out a workaround besides resetting the simulator completely?

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• Zero KB SQLite File created by Core Data on application start up

  - by Tots

  I'm developing an iPhone application using Core Data. I had everything working and had to make an adjustment to the database schema and change the relationships through the xcdatamodel file. I deleted the my project's sqlite file in Library/Application Support/iPhone Simulator/3.1.3//Documents. Build and run the application, it creates the sqlite file, but its empty with a file size of 0 KB. At a minimum the table information should be in there. There are no errors/warning in the console. Anyone have an idea what is wrong?

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• Finding rank of the student -Sql Compact

  - by Jankhana

  I have a table like this : Name Mar1 Mar2 Mar3 Total xxx 80 80 80 240 yyy 60 70 50 180 aaa 85 65 75 225 I wanted to find the rank of the student based on total. I using SQL Compact 3.5 . As we have rank() function in sql server do we have something with which we can find the students rank??? When I used "select Total,rank() over (order by total desc) i1 from stmarks " it's giving error as " Major Error 0x80040E14, Minor Error 25501 select Total,rank() over (order by total desc) i1 from stmarks There was an error parsing the query. [ Token line number = 1,Token line offset = 21,Token in error = over ] " Do Sql Compact support rank() over or is there any another way???

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