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• Error encountered compiling kernel 2.6.35-25.44

  - by Matt

  I downloaded the linux-source-2.6.35 package and tried to compile it using the command "fakeroot make-kpkg --append-to-version=.dbg kernel_image kernel_source kernel_headers --initrd" after "make menuconfig". The image .deb file is produced and installs fine, but an error stops the build process while trying to make the source package: scripts/Makefile.clean:17: /home/ade/linux-source-2.6.35/debian/linux-source-2.6.35.10.dbg/usr/src/linux-source-2.6.35.10.dbg/crypto/Makefile: No such file or directory make[1]: *** No rule to make target `/home/ade/linux-source-2.6.35/debian/linux-source-2.6.35.10.dbg/usr/src/linux-source-2.6.35.10.dbg/crypto/Makefile'. Stop. make: *** [_clean_crypto] Error 2 Sure enough, the folder linux-source-2.6.35/debian/linux-source-2.6.35.10.dbg/usr/src/linux-source-2.6.35.10.dbg/crypto does not exist (although all of the other kernel source folders appear to be there). I haven't even been able to determine where the folder is supposed to be copied over, or what's supposed to invoke clean. Am I doing something wrong here? It should be noted that I am running 10.04.

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• String Formatting with concatenation or substitution

  - by Davio

  This is a question about preferences. Assume a programming language offers these two options to make a string with some variables: "Hello, my name is ". name ." and I'm ". age ." years old." StringFormat("Hello, my name is $0 and I'm $1 years old.", name, age) Which do you prefer and why? I have found myself using both without any clear reason to pick either. Considering micro-optimizations is not within the scope of this question. Localization has been mentioned as a reason to go with option #2 and I think it's a very valid reason and deserves to be mentioned here. However, would opinions differ based on aesthetic viewpoints?

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• jQuery 1.8 b1 est disponible, le code du framework est maintenant réparti dans différents modules

  jQuery 1.8 b1 est disponible jQuery est utilisé par 50 % des grands sites du web, mais les navigateurs et les appareils sur lesquels il fonctionne ont beaucoup changé depuis 6 ans. De même, la manière et les outils pour concevoir un site web se modifient rapidement. jQuery doit s'adapter en permanence à son environnement. Comme il en a été décidé lors de la sortie de la version 1.7, l'équipe de développement se pose maintenant en permanence les questions : « Cet ajout est-il indispensable ? Que peut-on supprimer ? » De nouvelles obsolescences ont été ajoutées à la liste des obsolescences annoncées à l'époque. Ces questions sont cruciales dans le domaine des appareils mobiles, jQuery doit mettre à la disposition du dé...

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• How can I allow individual developers to have their own space to create git repositories?

  - by Jason Baker

  I have a server that is essentially a gitosis setup. I have a git user that has access to all the shared repositories. What I would like to do is have each developer be able to have their own "area" on this server to create their own repositories. I'd like these areas to be able to be viewable via gitweb. How can this be done that would require the least maintenance in terms of adding users and repositories? One obvious solution would be to just allow each developer to create repositories on the git login and have branches named something like <devname>-<reponame>. But I could see this getting unmanageable as the number of developers grows.

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• SQL Profiler Through StreamInsight Sample Solution

  In this postI show how you can use StreamInsight to take events coming from SQL Server Profiler in real-time and do some analytics whilst the data is in flight.  Here is the solution for that post.  The download contains Project that reads events from a previously recorded trace file Project that starts a trace and captures events in real-time from a custom trace definition file (Included) It is a very simple solution and could be extended.  Whilst this example traces against SQL Server it would be trivial to change this so it profiles events in Analysis Services.       Enjoy.

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• Does anyone do hardware benchmarks on compiling code?

  - by Colen

  I've seen a bunch of sites that benchmark new hardware on gaming performance, zipping some files, encoding a movie, or whatever. Are there any that test the impact of new hardware (like SSDs, new CPUs, RAM speeds, or whatever) on compile and link speeds, either linux or windows? It'd be really good to find out what mattered the most for compile speed and be able to focus on that, instead of just extrapolating from other benchmarks.

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• What significant progress have we made in Rapid Application Development?

  - by Frank Computer

  Since the introduction of OOPL's and event-driven programming, I feel like developing an application has become harder and more tedious, when it should have been the other way around! We should have development tools which can generate prototype apps which can be quickly and easily customized into sophisticated applications, even by novice users! We really need new ideas in this area of software development and I would like to know of any good ideas. If we can't really find them, then we should ask "Where did we miss the boat?.. Why?.. and What should we be doing?"

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• Dealing with the node callback pyramid

  - by thecoop

  I've just started using node, and one thing I've quickly noticed is how quickly callbacks can build up to a silly level of indentation: doStuff(arg1, arg2, function(err, result) { doMoreStuff(arg3, arg4, function(err, result) { doEvenMoreStuff(arg5, arg6, function(err, result) { omgHowDidIGetHere(); }); }); }); The official style guide says to put each callback in a separate function, but that seems overly restrictive on the use of closures, and making a single object declared in the top level available several layers down, as the object has to be passed through all the intermediate callbacks. Is it ok to use function scope to help here? Put all the callback functions that need access to a global-ish object inside a function that declares that object, so it goes into a closure? function topLevelFunction(globalishObject, callback) { function doMoreStuffImpl(err, result) { doMoreStuff(arg5, arg6, function(err, result) { callback(null, globalishObject); }); } doStuff(arg1, arg2, doMoreStuffImpl); } and so on for several more layers... Or are there frameworks etc to help reduce the levels of indentation without declaring a named function for every single callback? How do you deal with the callback pyramid?

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• Handle all authentication logic in database or code?

  - by Snuffleupagus

  We're starting a new(ish) project at work that has been handed off to me. A lot of the database sided stuff has been fleshed out, including some stored procedures. One of the stored procedures, for example, handles creation of a new user. All of the data is validated in the stored procedure (for example, password must be at least 8 characters long, must contain numbers, etc) and other things, such as hashing the password, is done in the database as well. Is it normal/right for everything to be handled in the stored procedure instead of the application itself? It's nice that any application can use the stored procedure and have the same validation, but the application should have a standard framework/API function that solves the same problem. I also feel like it takes away the data from the application and is going to be harder to maintain/add new features to.

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• Which are the most frequent exceptions thrown in Java applications? [on hold]

  - by Chris

  1. Do you know of any statistics about the frequency of exceptions (checked and unchecked) thrown at runtime in typical Java applications? for example: NullPointerException: 25% of all exceptions ClassCastException: 15% of all exceptions etc. 2. Which are the most frequent exceptions according to your own experiences? 3. Would you agree that the NullPointerException is generally the most often thrown exception? I am asking this question in the context of the compiler development of the PPL programming language (www.practical-programming.org). The goal is to auto-detect a maximum of frequent exceptions at compile-time. For example, detecting all potential NullPointerExceptions at compile-time leads to null-safe software which is more reliable.

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• Code execution time out occationally

  - by Athul k Surendran

  I am working on an e-commerce website. There is a case where I need to fetch the whole data in database through third-party API and send it to an indexing engine. This third-party API has many functions like getproducts, getproductprice, etc., and each of that functions will return the data in XML format. From there I will take charge, I will use various API calls and will handle the XML data with XSLT. And will write to a CSV file. This file will be uploaded to an Indexing engine. Right now I have details of 8000 products to feed the engine, and almost all time the this process takes about 15 min to complete, and sometimes fails. I can't find a better solution for this. I am thinking about handling the XML data in C# itself and get rid of XSLT. As I think, XSLT is far slower than C#. Is it a good Idea? Or what else I can do to solve this issue?

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• Configuring Site Policy in SharePoint 2013 using server code

  - by panjkov

  When you create Site Policy in SharePoint, you can configure its options using browser, which is particularly convenient when you have that policy configured for publishing in Content Type Hub. But, when you need to configure multiple sites with same policy, and you for any reason have to deploy multiple instances of same site policy, this browser-based editing process is not something that you would want to use. In that case, some way of configuring policy options automatically would be helpful...(read more)

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• How to write PowerShell code part 3 (calling external script)

  - by ybbest

  In this post, I’d like to show you how to calling external script from a PowerShell script. I’d like to use the site creation script as an example. You can download script here. 1. To call the external script, you need to first to grab the script path. You can do so by calling $scriptPath = Split-Path $myInvocation.MyCommand.Path to grab the current script path. You can then use this to build the path for your external script path. $scriptPath = Split-Path $myInvocation.MyCommand.Path $ExternalScript=$scriptPath+"\CreateSiteCollection.ps1" $configurationXmlPath=$scriptPath+"\SiteCollection.xml" [xml] $configurationXml=Get-Content $configurationXmlPath & "$ExternalScript" $configurationXml Write-Host 2.If you like to pass in any parameters , you need to define your script parameters in param () at the top of the script and separate each parameter by a comma (,) and when calling the method you do not need comma (,) to separate each parameter. #Pass in the Parameters. param ([xml] $xmlinput)

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• Alternatives to FlipShare for manipulating Cisco's Flip camcorders?

  - by Fred

  I have a Flip UltraHD, and I'd like to find alternatives to the included FlipShare software. I want to download videos from the Flip hardware and remove videos from the Flip's memory. A Mac version would be great, but not essential.

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• How are larger games organized?

  - by Matthew G.

  I'm using Java, but the language I'm using here is probably irrelevant. I'd like to create an economy based on an ancient civilization. I'm not sure how to design it. If I were working on a smaller game, like a copy of "Space Invaders", I'd have no problem structuring it like this. Game -Main Control Class --Graphics Class --Player Class --Enemy class I'd pass the graphics class to both the player and enemy class so they could call graphics functions. I don't understand how I'd do this for larger projects. Do I create a country class that contains a bunch of towns? Do the towns contain a lot building class, most contain classes of people? Do I make a path finding class that the player can access to get around? How exactly do I structure this and pass all these references around? Thanks.

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• Testing HTML5 and javascript code for iPhone and Android devices

  - by Pankaj Upadhyay

  I have developed a simple HTML5 webpage that uses a javascript file. This is a fun learning page so I wanted to know as to how will they show up on mobile devices like iPhone and Android smartphones. The pages are hosted on a server and i have tested the thing on my desktop. But, how can i test the same for these mobile devices. i.e. how the page will look on mobile and stuff. I don't have an iPhone or Android. There is no serious development going in here so i was thinking if there is some free website or tool that acts as a iPhone or android browser. The main aim is just to see how the webpage will show up on an android phone.

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• Is there a correlation between complexity and reachability?

  - by Saladin Akara

  I've been studying cyclomatic complexity (McCabe) and reachability of software at uni recently. Today my lecturer said that there's no correlation between the two metrics, but is this really the case? I'd think there would definitely be some correlation, as less complex programs (from the scant few we've looked at) seem to have 'better' results in terms of reachability. Does anyone know of any attempt to look at the two metrics together, and if not, what would be a good place to find data on both complexity and reachability for a large(ish) number of programs? (As clarification, this isn't a homework question. Also, if I've put this in the wrong place, let me know.)

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• Free or very Cheap VPN server software with high concurrent users count

  - by Martin KS

  I'm hoping to implement a VPN whereby about 200 concurrent users can log in to briefly access my network. I had a look at OpenVPN and this seemed excellent, but was hoping that there would be a less costly option on a per-concurrent-user basis. I've no need for particularly strong security, and my only other requirement is that I would need to be able to add users in bulk via csv or similar. Does anyone have any suggestions?

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• What constitutes a programming language and how does one copyright a programming language?

  - by Yannbane

  I've decided to create a programming language of my own, mostly just for fun. However, I got interested in the legal aspect of it all. You can, for example, licence specific programs under specific terms. However, how do you go about licensing a language? Also, by that I don't just mean the implementation of the language (compiler & VM), but the standard itself. Is there something else to a programming language I'm missing? What I would like to achieve by such licensing: Make it completely FOSS (can a language even be FOSS, or is that the implementation that can be FOSS?) Establish myself as the author (can you legally be an author of a language? Or, again, just the implementation?) Make it so that anyone implementing my language would be required to attribute me (MIT-style. Please note that I do not have any hopes for anyone actually ever doing that though, I'm just learning.) I think that the solution would be to separately license the VM and the compiler for my language, as "the official implementation", and then license the design document as the language itself. What exactly am I missing here?

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• How do you format arrays within parameters?

  - by joslinm

  I'm talking about something like this: echo $form->input('general_addresss', array( 'label' => 'Where will you go today?' 'format' => array('before', 'input', 'after', 'label', 'after', 'error') )); Do you start with one array parameter, then break a line? If it can't fit on a line, do you immediately break a line? After of which, do you do a set number of tabs over? What happens if an array within an array has lots of properties? Is there any particular guide you follow?

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• How could I portably split large backup files over multiple discs?

  - by sourcejedi

  Context: I make backups / archives, primarily of photos. I'm experimenting with Bup, which is designed for backup to hard disk. Basically it creates Git repos which include packfiles of up to 1GB. But I still need last-ditch backups to keep offline and move offsite (and keeping them on read-only media is good too!). What are the options for archiving and splitting large files over several discs like CDs (and reading them back!)? I'd prefer methods which will stay readable in future. are portable e.g. to Windows. have known simple implementations, so I could re-implement them myself if necessary. (Using Bup packs will stretch my robustness budget. So I want to be confident about how other parts of the system would behave). I heard split archives are possible with both ZIP and 7-Zip. Is that right?

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• Toutes les semaines un peu de code pour aller plus loin avec Windows 7, Les Bibliothèques

  En cette fin d'année, la communauté de Developpez.com s'est alliée avec Microsoft France pour relayer une série de questions / réponses sur le développement Windows 7. A partir d'aujourd'hui, nous poserons une question chaque lundi sur une fonctionnalité propre au développement d'applications Windows 7. La bonne réponse de la question de la semaine sera ensuite dévoilée la semaine suivante avec un exemple de mise en pratique. Êtes-vous prêt à relever le défi ? Pensez-vous bien connaître les possibilités que proposent les API Windows 7 ? C'est ce que nous allons voir dès aujourd'hui, nous attendons vos propositions ! La réponse de la semaine : Quelle est la technologie de Wind...

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• How to reduce MDX code redundancy in SQL Server Analysis Services (SSAS)

  To query an Analysis Services cube, MDX is used as the query language. In most business settings, one would find a set of queries that are common across a number of user query requirements. To cater to this, even with a modest size IT team, there is a good chance that the same queries are developed redundantly either within a SSAS MDX script or repetitively in an ad-hoc manner in client applications. In this tip we would look at how to reuse queries without redeveloping them over and over.

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• What should NOT be included in comments? (opinion on a dictum by the inventor of Forth)

  - by AKE

  The often provocative Chuck Moore (inventor of the Forth language) gave the following advice (paraphrasing): "Use comments sparingly. Programs are self-documenting, with a modicum of help from mnemonics. Comments should say WHAT the program is doing, not HOW." My question: Should comments say WHY the program is doing what it is doing? Update: In addition to the answers below, these two provide additional insight. 1: Beginner's guide to writing comments? 2: http://programmers.stackexchange.com/a/98609/62203

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• Preparing yourself for Code challenges

  - by Daniel Fath

  Just a few days ago I discovered Codility, and I tried their challenges. And I must say. I got my behind handed to me on a platter. I'm not sure what the problem was, but I'll lick my wounds and wait for the solution to come out and compare it with my own. In the meantime, I want to get ready for the next challenge so I'm reading their previous blog posts and seeing how to solve their previous problems. There are a lot of new things I haven't heard about like (Cartesian trees, various sort algorithms, etc.) So, how does one prepare for such challenges (especially the O(x) time and space complexity). What should I read to prepare for such a task?

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