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• Database with users design

  - by 1110

  I am in database design development phase. Application will work with large number of users (LARGE :)) I designed 80% of database but I have one Users table which is connected to everything else: Users {UserId, FirstName, LastName, Username, Password, PasswordQuestion, PasswordAnswer, Gender, RoleId, LastLoginDate etc etc} I saw asp.net membership database structure where Users and Membership are two tables. My questions are: Should I use one users table with all users data in it or more tables? If answer is 'more tables', what tables to use? Any advice on how to structure relation between those tables? This is sample relation that I have, and trying to improve. I don't understand why user and userChild are separated tables?

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• Using Twitter OAuth for automatic status update

  - by ebae

  I want my website to automatically post status updates to a particular twitter account using OAuth in PHP. I test this using a URL www.mysite.com/update_status but it asks me for "user name" and "password", which is fine when I am testing it. But my website will not be able to insert this user name and password before posting the status update. So the question is how can a website which is in the server, automatically post a status update to an account without user filling out the user name and password. Is there any way to bypass this? I tried saving oAuth tokens, but it's not working. Thank you for your answer in advance!

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• Most useful Rails plugins, Ruby libraries and Ruby gems?

  - by Srinivas Iyer

  I have seen many sites which provide the whole list of Rails plugins, Ruby libraries and Ruby gems, but we hardly use few of them and some may not suit our requirement and we spend a whole lot of time searching for useful plugins which suits our requirement. I have created this poll, people can post useful libraries, gems and plugins which they have come across. It would be great help for newbies like me and to the entire Ruby on Rails community. Note: to keep this poll as useful as possible, please remember: Post only one library, gem, or plugin per answer Mention the name of the library, gem, or plugin which you find it useful. URL of the location of the resource We don't want duplicate answers, so before posting check if the library has been mentioned already. Thanks

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• LazyList<T> vs System.Lazy<List<T>> in ASP.NET MVC 2?

  - by FreshCode

  In Rob Conery's Storefront series, Rob makes extensive use of the LazyList<..> construct to pull data from IQueryables. How does this differ from the System.Lazy<...> construct now available in .NET 4.0 (and perhaps earlier)? More depth based on DoctaJones' great answer: Would you recommend one over the other if I wanted to operate on IQueryable as a List<T>? I'm assuming that since Lazy<T> is in the framework now, it is a safer bet for future support and maintainability? If I want to use a strong type instead of an anonymous (var) type would the following statements be functionally equivalent? Lazy<List<Products>> Products = new Lazy<List<Product>>(); LazyList<Product> = new LazyList<Product>();

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• Visual Studio 2008 Build question x64 vs x86

  - by Brett

  Hi Everyone, I have written an application on my x64 machine in Visual Stuido 2008. The application will be sent to someone, and I have two questions that I need answers to. What requirements will they need to have installed. I am assuming the .NET 3.5 redistributable. Are there anything else though? (The application does not call any external dependencies). This is my realy question that I can't find the answer to. I have developed and build the application on my x64 machine using the "Any CPU" option (as versus x64 or x86 specifically). Will this run on a 32 bit machine? (I don't have one to test). Or do I need to build it specifically for x86 in order to run it on a 32 bit machine? Many thanks, Brett

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• Django + Postgres: How to specify sequence for a field

  - by Giovanni Di Milia

  I have this model in django: class JournalsGeneral(models.Model): jid = models.AutoField(primary_key=True) code = models.CharField("Code", max_length=50) name = models.CharField("Name", max_length=2000) url = models.URLField("Journal Web Site", max_length=2000, blank=True) online = models.BooleanField("Online?") active = models.BooleanField("Active?") class Meta: db_table = u'journals_general' verbose_name = "Journal General" ordering = ['code'] def __unicode__(self): return self.name My problem is that in the DB (Postgres) the name of the sequence connected to jid is not journals_general_jid_seq as expected by Django but it has a different name. Is there a way to specify which sequence Django has to use for an AutoField? In the documentation I read I was not able to find an answer.

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• Stuffed Animal In OpenGL

  - by anon

  I have seen metal/plastic/water/fire/... shaders for OpenGL. However, it it possible to render something fur-like, say a stuffed animal / teddy bear in OpenGL (I know this is possible with renderman / ray tracers, but I want to do it in OpenGl). If you have pointers to GLSl shaders for this, please point me in the right direction. Thanks! [I'm guessing the answer is no since fur requires more than just shaders -- it almost requires creating geometry on the fly -- but I'd love to be proven wrong)]

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• Concerns about reading a file in Flash 10

  - by user246114

  Hi, I'd like to read an xml file on a user's machine (which can be kind of large). There's no point in me sending the file to my server as I can do all the work I need on the file right on the client's machine. Not sure if this is a good fit though, was wondering if anyone can answer these questions before I dive in: I see at adobe's website that Flash 10 has like 94% penetration, is this true, I thought it was just released not too long ago? After opening the xml file in flash, is it possible to just throw it to a javascript function on my same page for further processing? I'd like to go into flash world for as short a time as possible. Is it at all common to use flash for file upload stuff? I heard aol/flickr are? I would need to buy flash in order to do this right, they don't have a free ide/compiler yet? Thanks

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• How do I set the UI language in vim?

  - by Daren Thomas

  I saw this on reddit, and it reminded me of one of my vim gripes: It shows the UI in German. Damn you, vim! I want English, but since my OS is set up in German (the standard at our office), I guess vim is actually trying to be helpfull. What magic incantations must I perform to get vim to switch the UI language? I have tried googling on various occasions, but can't seem to find an answer (No, Google, you're my friend *pat*, *pat*, but I allready know how to change the syntax highlighting, thank you!)...

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• Accessing HTTP status code while using WCF client for accessing RESTful services

  - by Hemant

  Thanks to this answer, I am now able to successfully call a JSON RESTful service using a WCF client. But that service uses HTTP status codes to notify the result. I am not sure how I can access those status codes since I just receive an exception on client side while calling the service. Even the exception doesn't have HTTP status code property. It is just buried in the exception message itself. So the question is, how to check/access the HTTP status code of response when the service is called.

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• Maven problems using GAE and DataNucleus

  - by Wraith

  I'm having trouble retrieving 2 artifacts in my Maven/Java/Google App Engine project: com.google.appengine.orm:datanucleus-appengine:jar:1.0.7.final com.google.appengine:appengine-api-1.0-sdk:jar:1.3.4 There's a similar question posted, but each answer brings me back to the same error message. More detail I don't know if it is relevant, but rather than a version number, my original dependency for DataNucleus contained a variable. I am using Eclipse. <groupId>org.datanucleus</groupId> <artifactId>datanucleus-core</artifactId> <version>${datanucleus.version}</version> <scope>runtime</scope> I did not include my stack trace in Maven for brevity's sake. Please let me know if it would help to post it. Thank you.

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• Best Practise for Stopwatch in multi processors machine?

  - by Ahmed Said

  I found a good question for measuring function performance, and the answers recommend to use Stopwatch as follows Stopwatch sw = new Stopwatch(); sw.Start(); //DoWork sw.Stop(); //take sw.Elapsed But is this valid if you are running under multi processors machine? the thread can be switched to another processor, can it? Also the same thing should be in Enviroment.TickCount. If the answer is yes should I wrap my code inside BeginThreadAffinity as follows Thread.BeginThreadAffinity(); Stopwatch sw = new Stopwatch(); sw.Start(); //DoWork sw.Stop(); //take sw.Elapsed Thread.EndThreadAffinity(); P.S The switching can occur over the thread level not only the processor level, for example if the function is running in another thread so the system can switch it to another processor, if that happens, will the Stopwatch be valid after this switching? I am not using Stopwatch for perfromance measurement only but also to simulate timer function using Thread.Sleep (to prevent call overlapping)

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• Anyone using NoSQL databases for medical record storage?

  - by Brian Bay

  Electronic Medical records are composed of different types of data. Visit information ( date/location/insurance info) seems to lend itself to a RDMS. Other types of medical infomation, such as lab reports, x-rays, photos, and electronic signatures, are document based and would seem to be a good candidate for a 'document-oriented' database, such as MongoDB. Traditionally, binary data would be stored as a BLOB in a RDBMS. A hybrid approach using a traditional RDBMS along with a 'document-oriented' database would seem like good alternative to this. Other alternative would be something like DB2 purexml. The ultimate answer could be that 'it depends', but I really just wanted to get some general feedback/ideas on this. Is anyone using the NoSql approach for medical records?

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• How do I display a local html file in a UIWebView?

  - by Thomas

  I have a relatively simple question that I cannot seem to find the answer for. While doing the Google Maps Java API Tutorials, I ran into a problem. I can load an HTML file from the web, but when I try it locally, it just displays the contents of the file instead of running the script. Here's what works: NSString *url = @"http://code.google.com/apis/maps/documentation/v3/examples/geocoding-simple.html"; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]]; [webView loadRequest:request]; I want to store the HTML file locally and run it from the device itself, so I tried: [webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"geocoding-simple" ofType:@"html"]isDirectory:NO]]]; and it just displayed the contents of the file. What am I doing wrong here? Thomas

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• Handy F# snippets

  - by Benjol

  There are already two questions about F#/functional snippets. However what I'm looking for here are useful snippets, little 'helper' functions that are reusable. Or obscure but nifty patterns that you can never quite remember. Something like: open System.IO let rec visitor dir filter= seq { yield! Directory.GetFiles(dir, filter) for subdir in Directory.GetDirectories(dir) do yield! visitor subdir filter} I'd like to make this a kind of handy reference page. As such there will be no right answer, but hopefully lots of good ones.

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• Avoiding accidentally catching KeyboardInterrupt and SystemExit in Python 2.4

  - by jrdioko

  In Python scripts, there are many cases where a keyboard interrupt (Ctrl-C) fails to kill the process because of a bare except clause somewhere in the code: try: foo() except: bar() The standard solution in Python 2.5 or higher is to catch Exception rather than using bare except clauses: try: foo() except Exception: bar() This works because, as of Python 2.5, KeyboardInterrupt and SystemExit inherit from BaseException, not Exception. However, some installations are still running Python 2.4. How can this problem be handled in versions prior to Python 2.5? (I'm going to answer this question myself, but putting it here so people searching for it can find a solution.)

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• Limitations in running Ruby/Rails on windows

  - by johnc

  In the installation documentation to RoR it mentions that there are many limitations to running Ruby on Rails on Windows, and in some cases, whole libraries do not work. How bad are these limitations, should I always default to Linux to code / run RoR, and is Iron Ruby expected to fix these limitations or are they core to the OS itself? EDIT Thanks for the answer around installation and running on Linux, but I am really trying to understand the limitations in functionality as referenced in the installation documentation, and non-working libraries - I am trying to find a link to the comment, but it was referenced in an installation read me when I installed the msi package I think

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• Hidden features of x86 assembly

  - by Earlz

  I am still a fan of x86 assembly(sorta) and know a lot of developers still using x86 assembly, although by far there are very few features available in assembly, let us list out the most useful and not so well known ones. Of course the question is on the lines of the Hidden Features questions listed below.: Hidden Features of JavaScript Hidden Features of CSS Hidden Features of C# Hidden Features of VB.NET Hidden Features of Java Hidden Features of ASP.NET Hidden Features of Python Hidden Features of TextPad Hidden Features of Eclipse Hidden Features of Classic ASP Please specify one feature per answer. Also, you can specify all bits of the x86 such as 16bit(real mode), 32bit, and 64bit. Please keep it neutral of assembler though. Both Intel and AT&T syntax is welcome but please don't for example demonstrate a useful macro feature for yasm.

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• Dynamically add files to visual studio deployment project.

  - by Graeme Yeo

  I've been desperately looking for the answer to this and I feel I'm missing something obvious. I need to copy a folder full of data files into the TARGETDIR of my deployment project at compile time. I can see how I would add individual files (ie. right click in File System and go to Add-File) but I have a folder full of data files which constantly get added to. I'd prefer not to have to add the new files each time I compile. I have tried using a PreBuildEvent to copy the files: copy $(ProjectDir)..\Data*.* $(TargetDir)Data\ which fails with error code 1 when I build. I can't help but feel I'm missing the point here though. Any suggestions? Thanks in advance. Graeme

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• Google Visualization legend format Jquery ui tabs

  - by Liam

  I've got an issue when using the Google Visualization api line chart with Jquery ui tabs. I've got two graphs on two tabs. The first graph, which is visible by default displays fine: the second chart on the hidden tab seems to be messing up the key: I've tried changing the options but nothing I do seems to make any difference. Here are my options: options = { 'title': title, titleTextStyle: { color: color, fontSize: 20 }, 'width': 950, 'height': 400, hAxis: { minorGridlines: { count: x } }, chartArea: { width: 880 }, legend: { position: 'bottom', textStyle: { fontSize: 10 } } }; // Instantiate and draw our chart, passing in some options. var chart = new google.visualization.LineChart(document.getElementById(divId)); chart.draw(data, options); $('#tabs').tabs(); any thoughts on what is causing this and how to prevent it?? Edit If I remove the tabs() call it displays correctly. As per answer below from @Vipul tried setting the div to a fixed width, no difference.

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• Mutex names - best practice?

  - by Argalatyr

  Related to this question, what is the best practice for naming a mutex? I realize this may vary with OS and even with version (esp for Windows), so please specify platform in answering. My interest is in Win XP and Vista. EDIT: I am motivated by curiousity, because in Rob Kennedy's comment under his (excellent) Answer to the above-linked Question, he implied that the choice of mutex name is non-trivial and should be the subject of a separate question. EDIT2: The referenced question's goal was to ensure only a single instance of an app is running.

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• Problems publishing website

  - by Oxymoron

  Recently I've began experimenting with ASP.NET MVC and the Entity Framework. Since my hostingprovider only provides me with MySQL I've been trying to set that up. Locally everything works fine, but after I publish it I get the following error: [ProviderIncompatibleException: The store provider factory type 'MySql.Data.MySqlClient.MySqlClientFactory' does not implement the IServiceProvider interface. Use a store provider that implements this interface.] Since I'm rather inexperienced with the configuring this and google is lacking a good answer I thought I'd try here. My best guess is something missing in the web.config file, but can't really make out what it is. Any help would be greatly appreciated!

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• will paginate, nested routes, ruby, rails

  - by Sam

  I'm trying to get will paginate to link to my nested route instead of the regular posts variable. I know I'm supposed to pass some params to paginate but I don't know how to pass them. Basically there is an array stored in @posts and the other param paginate has access to is category_id. The nested route is /category/1/posts but hitting next and previous on will paginate returns a url like this posts?page=1&category_id=7. <%= will_paginate @most_recent_posts "What do I do here?" %> This is the result of Yannis's answer: In your controller you can do: @posts = @category.posts.paginate And in your view: <%= will_paginate(@post) %> Doing this comes up with the following URL posts?page=2&post_category_id=athlete_management routes.rb #there are more routes but these are the relevant ones map.resources :posts map.resources :post_categories, :has_many => :posts solution map.resources :post_categories do |post_category| post_category.resources :posts end map.resources :posts Had to declare the resource after the block Thanks stephen!

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• Need to upload binary to test in-app purchase?

  - by psychotik

  Opinion seems to be split on whether an app binary is required to be uploaded to iTunes Connect before a testing an in-app purchase. I've created the app (no binary uploaded yet), created the in-app purchase, enabled by App ID for in-app purchase and marked the purchase "available for sale". I've followed the instructions in the guide as far as I can tell. However, when I try it on my device I am unable to retrieve the products - SKProductRequest returns my request product as invalid. Any suggestions what I need to do? Does the in-app purchase product need to "Developer Approved" for this to work? Any definitive answer on whether a binary needs to be uploaded? I would like to avoid that if possible but am willing to do it if required.

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• When using a package or framework is there a standard way to use version control?

  - by PurplePilot

  i.e. Do you put the whole package under VCS or just the components you are programming? Packages by there nature will get upgraded and that code will need to be added into the VCS, plus there is a lot of code that is static. Specifically I am going to be working on Joomla, adding and building modules, customising modules and the look and feel. Initially this will be just me but will expand to possibly two more developers as the project ramps up. My reaction would be just to VCS the lot, it means that i know it is all there and deployment via CI is easier(?). The alternative is to exclude the bulk of the code that is not being altered which could be error prone and laborious. As there is not a specific answer for this and i am looking for either experience or best practice advice i have marked it community wiki.

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