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  • SQL ADO.NET shortcut extensions (old school!)

    - by Jeff
    As much as I love me some ORM's (I've used LINQ to SQL quite a bit, and for the MSDN/TechNet Profile and Forums we're using NHibernate more and more), there are times when it's appropriate, and in some ways more simple, to just throw up so old school ADO.NET connections, commands, readers and such. It still feels like a pain though to new up all the stuff, make sure it's closed, blah blah blah. It's pretty much the least favorite task of writing data access code. To minimize the pain, I have a set of extension methods that I like to use that drastically reduce the code you have to write. Here they are... public static void Using(this SqlConnection connection, Action<SqlConnection> action) {     connection.Open();     action(connection);     connection.Close(); } public static SqlCommand Command(this SqlConnection connection, string sql){    var command = new SqlCommand(sql, connection);    return command;}public static SqlCommand AddParameter(this SqlCommand command, string parameterName, object value){    command.Parameters.AddWithValue(parameterName, value);    return command;}public static object ExecuteAndReturnIdentity(this SqlCommand command){    if (command.Connection == null)        throw new Exception("SqlCommand has no connection.");    command.ExecuteNonQuery();    command.Parameters.Clear();    command.CommandText = "SELECT @@IDENTITY";    var result = command.ExecuteScalar();    return result;}public static SqlDataReader ReadOne(this SqlDataReader reader, Action<SqlDataReader> action){    if (reader.Read())        action(reader);    reader.Close();    return reader;}public static SqlDataReader ReadAll(this SqlDataReader reader, Action<SqlDataReader> action){    while (reader.Read())        action(reader);    reader.Close();    return reader;} It has been awhile since I've really revisited these, so you will likely find opportunity for further optimization. The bottom line here is that you can chain together a bunch of these methods to make a much more concise database call, in terms of the code on your screen, anyway. Here are some examples: public Dictionary<string, string> Get(){    var dictionary = new Dictionary<string, string>();    _sqlHelper.GetConnection().Using(connection =>        connection.Command("SELECT Setting, [Value] FROM Settings")            .ExecuteReader()            .ReadAll(r => dictionary.Add(r.GetString(0), r.GetString(1))));    return dictionary;} or... public void ChangeName(User user, string newName){    _sqlHelper.GetConnection().Using(connection =>         connection.Command("UPDATE Users SET Name = @Name WHERE UserID = @UserID")            .AddParameter("@Name", newName)            .AddParameter("@UserID", user.UserID)            .ExecuteNonQuery());} The _sqlHelper.GetConnection() is just some other code that gets a connection object for you. You might have an even cleaner way to take that step out entirely. This looks more fluent, and the real magic sauce for me is the reader bits where you can put any kind of arbitrary method in there to iterate over the results.

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  • What is it that automatically checks config changes (such as those in /etc) into git?

    - by Brandon
    I remember reading on the ubuntu forums some time ago about a program to automatically check configuration changes into version control for you. It was (of course) not Ubuntu-specific. I'm pretty sure it used git, though it may have been svn, or perhaps even able to work with multiple different VCSs. My Googling has turned up nothing, and I'd rather not roll my own script if someone has already done this well. Of course I could just manually check things in, but there are reasons I'd like it done automatically. (I'm actually planning to use this for my LastSession.plist file for Safari, so when the #@$%^*&! thing crashes, and I don't restore everything, and then Leopard crashes, the fact that it has such lousy session management won't mean I lose the dozens of windows with dozens of tabs I had open.)

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  • Handy Javascript array Extensions &ndash; distinct()

    - by Liam McLennan
    The following code adds a method to javascript arrays that returns a distinct list of values. Array.prototype.distinct = function() { var derivedArray = []; for (var i = 0; i < this.length; i += 1) { if (!derivedArray.contains(this[i])) { derivedArray.push(this[i]) } } return derivedArray; }; and to demonstrate: alert([1,1,1,2,2,22,3,4,5,6,7,5,4].distinct().join(',')); This produces 1,2,22,3,4,5,6,7

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  • Useful Extensions for SecurityToken Handling - Convert a SecurityToken to Claims

    - by Your DisplayName here!
    That’s a very common one: public static IClaimsPrincipal ToClaimsPrincipal( this SecurityToken token, X509Certificate2 signingCertificate) {     var configuration = CreateStandardConfiguration(signingCertificate);     return token.ToClaimsPrincipal(configuration.CreateDefaultHandlerCollection()); }   public static IClaimsPrincipal ToClaimsPrincipal(this SecurityToken token, X509Certificate2 signingCertificate, string audienceUri) {     var configuration = CreateStandardConfiguration(signingCertificate);     configuration.AudienceRestriction.AudienceMode = AudienceUriMode.Always;     configuration.AudienceRestriction.AllowedAudienceUris.Add(new Uri(audienceUri));     return token.ToClaimsPrincipal(configuration.CreateDefaultHandlerCollection()); }   public static IClaimsPrincipal ToClaimsPrincipal( this SecurityToken token, SecurityTokenHandlerCollection handler) {     var ids = handler.ValidateToken(token);     return ClaimsPrincipal.CreateFromIdentities(ids); }   private static SecurityTokenHandlerConfiguration CreateStandardConfiguration( X509Certificate2 signingCertificate) {     var configuration = new SecurityTokenHandlerConfiguration();     configuration.AudienceRestriction.AudienceMode = AudienceUriMode.Never;     configuration.IssuerNameRegistry = signingCertificate.CreateIssuerNameRegistry();     configuration.IssuerTokenResolver = signingCertificate.CreateSecurityTokenResolver();     configuration.SaveBootstrapTokens = true;     return configuration; }  private static IssuerNameRegistry CreateIssuerNameRegistry(this X509Certificate2 certificate) {     var registry = new ConfigurationBasedIssuerNameRegistry();     registry.AddTrustedIssuer(certificate.Thumbprint, certificate.Subject);     return registry; }   private static SecurityTokenResolver CreateSecurityTokenResolver( this X509Certificate2 certificate) {     var tokens = new List<SecurityToken>     {         new X509SecurityToken(certificate)     };     return SecurityTokenResolver.CreateDefaultSecurityTokenResolver(tokens.AsReadOnly(), true); }   private static SecurityTokenHandlerCollection CreateDefaultHandlerCollection( this SecurityTokenHandlerConfiguration configuration) {     return  SecurityTokenHandlerCollection.CreateDefaultSecurityTokenHandlerCollection(configuration); }  

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  • Script language native extensions - avoiding name collisions and cluttering others' namespace

    - by H2CO3
    I have developed a small scripting language and I've just started writing the very first native library bindings. This is practically the first time I'm writing a native extension to a script language, so I've run into a conceptual issue. I'd like to write glue code for popular libraries so that they can be used from this language, and because of the design of the engine I've written, this is achieved using an array of C structs describing the function name visible by the virtual machine, along with a function pointer. Thus, a native binding is really just a global array variable, and now I must obviously give it a (preferably good) name. In C, it's idiomatic to put one's own functions in a "namespace" by prepending a custom prefix to function names, as in myscript_parse_source() or myscript_run_bytecode(). The custom name shall ideally describe the name of the library which it is part of. Here arises the confusion. Let's say I'm writing a binding for libcURL. In this case, it seems reasonable to call my extension library curl_myscript_binding, like this: MYSCRIPT_API const MyScriptExtFunc curl_myscript_lib[10]; But now this collides with the curl namespace. (I have even thought about calling it curlmyscript_lib but unfortunately, libcURL does not exclusively use the curl_ prefix -- the public APIs contain macros like CURLCODE_* and CURLOPT_*, so I assume this would clutter the namespace as well.) Another option would be to declare it as myscript_curl_lib, but that's good only as long as I'm the only one who writes bindings (since I know what I am doing with my namespace). As soon as other contributors start to add their own native bindings, they now clutter the myscript namespace. (I've done some research, and it seems that for example the Perl cURL binding follows this pattern. Not sure what I should think about that...) So how do you suggest I name my variables? Are there any general guidelines that should be followed?

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  • Contributing to OSS, a Git Bootcamp

    So you want to contribute to an OSS project, but its hosted on github and you don't know where to start. This guide will cover the basics you'll need to get contributing - something made relatively easy by Git itself. First you'll need to install a Git client. We'll be using msysgit, so grab the latest full installer from: http://code.google.com/p/msysgit/downloads/list Run the installer. I've disabled Shell integration (but you don't have to). What you want to do is make...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Be careful when Git suppresses bin Folders

    - by Marko Apfel
    Initial situation Often for Visual Studio projects the typical content of a .gitignore file contains this line bin or [B|b]in It is used to avoid that Git tries to track compile outputs as repository relevant data. Problem But keep in mind: this will also suppress bin folders of additional stuff like frameworks and toolsets. For instance Microsoft.SDKs contains a folder named Bin with a lot of programs Simian contains a folder named bin with the program themselves If you store such artifacts also in the repository - according to the principle of a “self containing project” – you could lost the content in the bin folder! Solution Till yet I don’t have a good idea. So I verify for each new added toolset or framework whether it has or has not such a bin folder. If it has, then I must add this bin folder manually to the repository so that Git track it.

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  • Building SANE from git-source produce backend missmatch on 12.04 even if built locally

    - by deinonychusaur
    It seems to me that with Ubuntu Precise Pangolin it is all but easy to do a proper install of SANE from source (git-repo). I've found other scanning issues trying to find an answer to this, where the output people posted seems to indicate they suffer the same issue (unknowingly). If I run on a fresh install of Ubuntu 12.04 with compiled SANE source from the git I get: $ scanimage -V scanimage (sane-backends) 1.0.24git; backend version 1.0.22 (I basically followed the instructions on http://ubuntuportal.com/2012/02/how-to-get-an-canon-canoscan-lide-100-scanner-to-work-in-ubuntu-11-10linux-mint-12.html since I didn't find any other information making sure that sane was not installed prior to installation.) My primary interest is the epson2-backend. In 1.0.22 it offers the wrong TPU settings for Epson V700 (TPU2-mode wasn't supported in 1.0.22, and the scanner is useless to me if I don't have the TPU2-support). Since if I ask it to enter transparency mode, it shows 1.0.22 behaviour, it implies that the epson2-backend comes from 1.0.22 and not 1.0.24 even though I just built it. If I install SANE with prefix to a local folder and run that version of scanimage it still produces the mismatch. However, on another computer where I installed a custom 1.0.22 build of SANE prior to upgrading to Ubuntu 12.04, I can build and install the same SANE-git locally and have it correctly match backends: $ ./SANE/bin/scanimage -V scanimage (sane-backends) 1.0.24git; backend version 1.0.24 $ scanimage -V scanimage (sane-backends) 1.0.22; backend version 1.0.22 On this computer the 1.0.24 works correctly in finding TPU2 on Epson V700. So what am I missing/doing wrong? (And I want to replace 1.0.22 with 1.0.24 for the whole system, the local build was just debugging.) Any help would be much appreciated. Edit 1: Just tried compiling SANE using this instruction on Ubuntu 10.04 and it worked like a charm. However, when I upgraded to 12.04 (really would like to run 12.04), SANE was downgraded to 1.0.22. When trying the same set of instructions on 12.04 I was still out of luck -- the backend missmatch was there again (and I do have libusb-dev installed) Edit 2: I updated to Ubuntu 12.10 which now has the 1.0.23 SANE drivers. I haven't dared trying to compile from source on 12.10 since 1.0.23 is good enough for me. This is just a work-around and I would still like to know what's up with Ubuntu 12.04.

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  • I have a server running Windows 2008 R2 Core and it needs to hosts either SVN or GIT

    - by Jason Adams
    The server allocated for our cross platform projects (both Mac & PC) source repository is running Win2008R2 Core. We're really happy with its stability and we aren't interested in moving over to non-core. We need to get either SVN or GIT installed on the aforementioned box in the shortest amount of steps. We know the advantages/disadvantages of both systems. That being said, we don't care which one we use, we're just are looking for the path of least resistance on setting up a repository on a machine running R2 core.

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  • Best Chrome Extensions to Increase your productivity

    - by Ravish
    Google Chrome has gained excellent position in browsing category in comparison to other browsers due to its lightweight and fast browsing capability. For web surfing, chat, email, reading news, watching videos online and more..You can do a lot more in lightening fast moments. Google chrome can help you become productive even further, checkout these plugins [...] Related posts:Google Chrome WordPress Theme Tweak Firefox To Increase Viewing Screen Area Google Chrome Review, Looks Nice And Works Fast

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  • Which server requirment for a Redmine, Git and website hosting?

    - by Ephismen
    Me and 9 other students are going to start a project that will last a minimum of 2 years, for this purpose we are looking to host all our work on a server. Here are a few tools we would like to work with: Redmine GIT Hosting a website/blog to show our work Hosting an internal and private development website/blog We haven't decided yet which OS we will install, but we were looking toward Ubuntu or Fedora. Having a limited budget, 300$/year, we would like to have some advices on the following dedicated server specifications: Kimsufi 2G: Hardware: Intel Celeron/Atom, 1.20 Ghz, 64 bits, 2Gb DDR2, HDD 1 To, Backup FTP 100Gb Network: Connection 100 Mbps, Illimited trafic Dedibox SC: Hardware: Dell Nano U2250, 1x 1,6GHz, 64 bits, 2Gb DDR2, HDD 160 Gb Network: Connection 1Gbit/sec, Illimited trafic Will these server be sufficient? Should we host the websites on another platform? Would a virtualized server be more appropriate? Thank you for your answers, Ephismen.

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  • Developing gnome shell extensions with eclipse as a IDE

    - by GAP
    I would like to know whether any body has used Eclipse JavaScript support for developing gnome-exensions. Actually aiming here for the context support which is available in eclipse. And i though if i could add all the java scripts that a extension is inheriting (base scrips) in to a user library, then i could included it as a dependency in my extension project. Have any once done this already ? Does all the methods that are used in a exentions exist in the base scripts ? In what directories does the base scripts exist ? So far i tried adding the scripts in the following directory but still i have error when i try to look at the journal gnome extension code. /usr/share/gnome-shell/js /usr/share/gjs-1.0 Thanks

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  • SEO for duplicate sites with multiple domain extensions

    - by lock
    I am running business in different nations and I got domains for example www.mydomain.com www.mydomain.us www.mydomain.ca www.mydomain.uk www.mydomain.com.au So, if I run same website with same content (of course there will be little changes like address, etc.) as all these domains has same content will it be considered as spam or will the domains rank well as per the country? Also, is there solutions if Google considers this as spam.

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  • Google Chrome Extensions For SEO

    With more than 12% of internet users now using Chrome, it has obviously become the browser of choice for many power users. As a result, a number of extremely useful plug-ins have been created for Chrome, including many which are highly relevant to SEO professionals. What follows is a sampling of the most useful.

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  • Uninstall Git completely on Ubuntu?

    - by Millisami
    I installed Git on Ubuntu Lucid (latest) manually as following. cd ~/tmp wget http://kernel.org/pub/software/scm/git/git-1.7.0.6.tar.gz tar -xzvf git-1.7.0.6.tar.gz cd git-1.7.0.6.tar.gz ./configure sudo make sudo make install Now, how can I completely uninstall it?

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  • Prevent find from printing .git folders

    - by Nathan Neff
    I have a find command that I run, to find files named 'foo' in a directory. I want to skip the ".git" directory. The command below works except it prints an annoying ".git" any time it skips a .git directory: find . ( -name .git ) -prune -o -name '*foo*' How can I prevent the skipped ".git" directories from printing to stdout?

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  • find: Prevent .git folders from printing to STDOUT

    - by Nathan Neff
    Hello, I have a find command that I run, to find files named 'foo' in a directory. I want to skip the ".git" directory. The command below works, EXCEPT, it prints an annoying ".git" any time it skips a .git directory find . ( -name .git ) -prune -o -name 'foo' How can I prevent the skipped ".git" directories from printing to STDOUT? Thanks, --Nate

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  • Problem with Drupal 7.0 installation - PHP extensions disabled

    - by xralf
    Hello, when I install Drupal I have the following problem. PHP extensions Disabled Drupal requires you to enable the PHP extensions in the following list (see the system requirements page for more information): gd I tried to solve it according to this page but with no success. Have you encountered the same problem and solved it? I'm using Linux (Ubuntu) thank you for help

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  • How to run sandboxed web browser with extensions

    - by Nrew
    I followed the steps here on how to create a sandboxed web browser using Sandboxie. So that you won't have to right-click a shortcut everytime and choose run sandboxed. And so that I could set a keyboard shortcut for the sandboxed web browser. I am using Iron browser, but when I try to execute the shortcut created by sandboxie. It doesn't have extensions in it. What do I do in order to load the extensions along with the browser

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  • Business case for decentralized version control systems

    - by Keyo
    I searched and couldn't find any business reasons why git/mercurial/bazzr systems are better than centralized systems (subversion, perforce). If you were trying to sell a DVCS to a non-technical person what arguments would you provide for the DVCS increasing profit. I will shortly be pitching git to my manager, it will take some time converting out subversion repositories and some expense in buying smartgit licences.

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