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  • Convert a string of numbers to a NSTimeInterval

    - by culov
    I know I must be over-complicating this because it NSTimeInterval is just a double, but I just can't seem to get this done properly since I have had very little exposure to objective c. the scenario is as follows: The data im pulling into the app contains two values, startTime and endTime, which are the epoch times in milliseconds. The variables that I want to hold these values are NSTimeInterval *start; NSTimeInterval *end; I decided to store them as NSTimeIntervals but im thinking that maybe i ought to store them as doubles because theres no need for NSTimeIntervals since comparisons can just be done with a primitive. Either way, I'd like to know what I'm missing in the following step, where I try to convert from string to NSTimeInterval: tempString = [truckArray objectAtIndex:2]; tempDouble = [tempString doubleValue]; Now it's safely stored as a double, but I can't get the value into an NSTimeInterval. How should this be accomplished? Thanks

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  • New to AVL tree implementation.

    - by nn
    I am writing a sliding window compression algorithm (LZ77) that searches for phrases in a "moving" dictionary. So far I have written a BST where each node is stored in an array and it's index in the array is also the value of the starting position in the window itself. I am now looking at transforming the BST to an AVL tree. I am a little confused at the sample implementations I have seen. Some only appear to store the balance factors whereas others store the height of each tree. Are there any performance advantage/disadvantages of storing the height and/or balance factor for each node? Apologies if this is a very simple question, but I'm still not visualizing how I want to restructure my BST to implement height balancing. Thanks.

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  • How can I pass a dynamic backing bean into a JSF 2.0 page using facelets?

    - by kgrad
    Hi, I am using a JSF 2.0 to create a web app (purely jee6, without spring/seam etc.). I would like to have a single xhtml page but pass the proper backing bean / entity into it. For example, I would like to be able to edit a user other than the logged in user, I have a user edit page which displays the information of the logged in user (being tracked by my session), I would like to instead pass in a user selected from a list and edit that user's information, without switching the user that is stored in the session or creating a separate xhtml page (violating DRY). The "best" way I can see to achieve this would be to reuse the exact same xhtml page that I am using to display the logged-in-user's edit page, but simply pass in a different entity in some way. Perhaps calling the setter in the backing bean before redirecting to the page (if this is even possible) or some other solution that does not violate DRY. Perhaps I have designed this all wrong, is there a way to pass in entities to JSF pages? thanks.

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  • Analysis services with non normalized table

    - by Uwe
    I have a table with several million rows. Each row represents a user session. There is a column called user which is not unique. There can be multiple sessions per user. I want to use Analysis services to get me the additional properties per user. Example: How many users (unique!) had a session longer than x minutes. How is that possible without changing the database. Note: there is no lookup-table and I cannot create one. What I am able of at the moment is to ask how many sessions were longer then x minutes.

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  • Spring @Autowired and WebApplicationContext in Tomcat

    - by EugeneP
    @Autowired works only once. What to do to make it wire the bean every time the Servlet is recreated? My web-app (Tomcat6 container) consists of 2 Servlets. Every servlet has private fields. Their setters are marked with @Autowired In the init method I use WebApplicationContextUtils ... autowireBean(this); It autowires the properties marked with @Autowired once - during the initialization of the Servlet. Any other session will see these fields values, they will not be rewired after the previous session is destroyed. What to do to make them rewire them each time a Servlet constructor is called? a) Put the autowiring into the constructor? Or better 2) get a web app context and extract a bean from there?

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  • Filling data in FormView from different tables

    - by wacky_coder
    Hi, I am using a FormView in an online quiz page for displaying the questions and RadioButtons (for answers) http://stackoverflow.com/questions/2438219/online-quiz-using-asp-dot-net Now, I need to pick the questions according to a TestID and a particular Set of that Test. The testid and the set_number would be passed using Session variables. I'm having 3 testIDs and 3 Sets per TestID and, thus, am using 9 tables to store the Questions, the Options and the correct answer. I need help on how to set the FormView so that it extracts the questions from a particular table only. Do I need to use a StoredProcedure ? If yes, how? PS: If I use only one table to store all the questions from each Set and for each TestID, I can do that, but I'd prefer using separate tables.

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  • Storing a set of values in Delphi

    - by Hendriksen123
    I am trying to store a set of values in delphi, but i want to be able to address them using their name, instead of an assigned number. For example, an array of 'OldValues' would let me do OldValue[1] := InflationEdit.Text; Ideally however, i would like to have a value stored in 'Data.Inflation.OldValue' for example. For each identifier, such as Inflation, there is an OldValue, NewValue and StoredValue. There are about 12 of these identifiers. Is there some way i could store the values like this? that way i could then do something like: Data.Inflation.NewValue := Data.Inflation.OldValue; Data.Inflation.NewValue := InflationEdit.Text;

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  • MVVM- How would I go about propagating settings between my main view-model (and other view-models) a

    - by Justin
    I am building a settings dialog for my application and right now all of the settings correspond with settings on the main view-model, but as I add more view's and view-models some may not. I need to know what the best practice is for loading the current settings into the settings dialog and then saving the settings to thier corresponding view-models if the user clicks okay. I will not be using the Properties.Settings.Default system to store settings since I want my application to be as portable as possible and this would store user scoped settings in the directory: C:\Users\ username \Local Settings\Application Data\ ApplicationName Instead of in my application's directory. In case it makes any difference I am using the MVVM Light Toolkit by Laurent Bugnion.

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  • Google bot .net and AspxAutoDetectCookieSupport dilemma

    - by nLL
    Hi, i have a .net mobile web site where i use sesion state and due to nature of mobile networks/phones (not all supports session cookies) i had to use <sessionState cookieless="AutoDetect"/> It works fine but because each new session redirected with "AspxAutoDetectCookieSupport=1" i have a feeling that google won't like this. Here is a small sample from my server logs supportForumReadTopic.aspx id=38 80 - 66.249.71.80 Mozilla/5.0+(compatible;+Googlebot/2.1;++http://www.google.com/bot.html) 302 supportForumReadTopic.aspx id=38&AspxAutoDetectCookieSupport=1 Mozilla/5.0+(compatible;+Googlebot/2.1;++http://www.google.com/bot.html) 200 As you see each new hit from google will get 302 to itself. I have a genericmozilla5.browser file where i define google bot as cookie supporting browser in order to get .net not to use cookieless urls but not sure how this 302 would effect me. Any one had smilar exprience? Any ideas? Suggestions? Thanks

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  • core data editor problems

    - by Peyman
    I was recommended by someone in Stack Overflow to use Core Data Editor http://christian-kienle.de/CoreDataEditor/ to manage the sqlite persistent store. However the latest version (3.0) crashes on launch everytime. Older versions load but I see nothing when i point the config to the persistent store and the object model directories. There is no documentation either. can someone point me to the right place to sort this problem? I am trying to find a more manageable way to coordinate core data development than sqlite consoles. thank you

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  • UML Class Relationships

    - by 01010011
    Hi, I would like to confirm whether I am on the right track when identifying common UML class relationships. For example, is the relationship between: 1 a stackoverflow member and his/her stackoverflow user account categorized as a composition relationship or an aggregation relationship? At first I thought it was an association because this member "has a" account. However on second thought, I am thinking its composition because each "part" (user account) belongs to only one whole (user) at a time, meaning for as long as I am logged into stackoverflow, I have to use this one and only account until I log off. If I log back onto stackoverflow with a different account then its composition again. Do you agree? 2 a database and a person's user account an aggregation relationship? I think so because 1 database (the whole) can store 0...* number of user accounts (the parts) but another database can store the same user accounts. Finally, can anyone recommend a website that specializes in designing code using UML? Thanks in advance

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  • How to have member variables and public methods in a jQuery plugin?

    - by user169867
    I'm trying to create a jQuery plugin that will create something like an autoCompleteBox but with custom features. How do I store member variables for each matching jQuery element? For example I'll need to store a timerID for each. I'd also like to store references to some of the DOM elements that make up the control. I'd like to be able to make a public method that works something like: $("#myCtrl").autoCompleteEx.addItem("1"); But in the implementation of addItem() how can I access the member variables for that particular object like its timerID or whatever? Below is what I have so far... Thanks for any help or suggestions! (function($) { //Attach this new method to jQuery $.fn.autoCompleteEx = function(options) { //Merge Given Options W/ Defaults, But Don't Alter Either var opts = $.extend({}, $.fn.autoCompleteEx.defaults, options); //Iterate over the current set of matched elements return this.each(function() { var acx = $(this); //Get JQuery Version Of Element (Should Be Div) //Give Div Correct Class & Add <ul> w/ input item to it acx.addClass("autoCompleteEx"); acx.html("<ul><li class=\"input\"><input type=\"text\"/></li></ul>"); //Grab Input As JQ Object var input = $("input", acx); //Wireup Div acx.click(function() { input.focus().val( input.val() ); }); //Wireup Input input.keydown(function(e) { var kc = e.keyCode; if(kc == 13) //Enter { } else if(kc == 27) //Esc { } else { //Resize TextArea To Input var width = 50 + (_txtArea.val().length*10); _txtArea.css("width", width+"px"); } }); }); //End Each JQ Element }; //End autoCompleteEx() //Private Functions function junk() { }; //Public Functions $.fn.autoCompleteEx.addItem = function(id,txt) { var x = this; var y = 0; }; //Default Settings $.fn.autoCompleteEx.defaults = { minChars: 2, delay: 300, maxItems: 1 }; //End Of Closure })(jQuery);

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  • Why aren't .NET "application settings" stored in the registry?

    - by Thomas
    Some time back in the nineties, Microsoft introduced the Windows Registry. Applications could store settings in different hives. There were hives for application-wide and user-specific scopes, and these were placed in appropriate locations, so that roaming profiles worked correctly. In .NET 2.0 and up, we have this thing called Application Settings. Applications can use them to store settings in XML files, app.exe.config and user.config. These are for application-wide and user-specific scopes, and these are placed in appropriate locations, so that roaming profiles work correctly. Sound familiar? What is the reason that these Application Settings are backed by XML files, instead of simply using the registry? Isn't this exactly what the registry was intended for? The only reason I can think of is that the registry is Windows-specific, and .NET tries to be platform-independent. Was this a (or the) reason, or are there other considerations that I'm overlooking?

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  • Log4net duplicate logging entires

    - by user210713
    I recently switched out log4net logging from using config files to being set up programmatically. This has resulted in the nhiberate entries getting repeated 2 or sometimes 3 times. Here's the code. It uses a string which looks something like this "logger1|debug,logger2|info" private void SetupLog4netLoggers() { IAppender appender = GetAppender(); SetupRootLogger(appender); foreach (string logger in Loggers) { CommaStringList parts = new CommaStringList(logger, '|'); if (parts.Count != 2) continue; AddLogger(parts[0], parts[1], appender); } log.Debug("Log4net has been setup"); } private IAppender GetAppender() { RollingFileAppender appender = new RollingFileAppender(); appender.File = LogFile; appender.AppendToFile = true; appender.MaximumFileSize = MaximumFileSize; appender.MaxSizeRollBackups = MaximumBackups; PatternLayout layout = new PatternLayout(PATTERN); layout.ActivateOptions(); appender.Layout = layout; appender.ActivateOptions(); return appender; } private void SetupRootLogger(IAppender appender) { Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); hierarchy.Root.RemoveAllAppenders(); hierarchy.Root.AddAppender(appender); hierarchy.Root.Level = GetLevel(RootLevel); hierarchy.Configured = true; log.Debug("Root logger setup, level[" + RootLevel + "]"); } private void AddLogger(string name, string level, IAppender appender) { Logger logger = LogManager.GetRepository().GetLogger(name)as Logger; if (logger == null) return; logger.Level = GetLevel(level); logger.Additivity = false; logger.RemoveAllAppenders(); logger.AddAppender(appender); log.Debug("logger[" + name + "] added, level[" + level + "]"); } And here's an example of what we see in our logs... 2010-05-06 15:50:39,781 [1] DEBUG NHibernate.Impl.SessionImpl - running ISession.Dispose() 2010-05-06 15:50:39,781 [1] DEBUG NHibernate.Impl.SessionImpl - closing session 2010-05-06 15:50:39,781 [1] DEBUG NHibernate.AdoNet.AbstractBatcher - running BatcherImpl.Dispose(true) 2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - running ISession.Dispose() 2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - closing session 2010-05-06 15:50:39,796 [1] DEBUG NHibernate.AdoNet.AbstractBatcher - running BatcherImpl.Dispose(true) 2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - running ISession.Dispose() 2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - closing session 2010-05-06 15:50:39,796 [1] DEBUG NHibernate.AdoNet.AbstractBatcher - running BatcherImpl.Dispose(true) Any hints welcome.

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  • Does the Fetch Request do the recommended batch faulting?

    - by dontWatchMyProfile
    I'm curious. Apple says in the docs: Core Data automatically fires faults when necessary (when a persistent property of a fault is accessed). However, firing faults individually can be inefficient, and there are better strategies for getting data from the persistent store (see “Batch Faulting and Pre-fetching with the SQLite Store”). NSFetchRequest has this feature: [fetchRequest setFetchBatchSize:20]; Is this essentially performing such a batch faulting like recommended? Just to make this clear for others, faulting does not mean "turning into a fault" but it means "materializing it", just like "making a Scooby-Doo out of it". Pretty ugly wording error, in my opinion, but it's at least consistent in the docs ;)

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  • SQL Injection with Plain-Vanilla NHibernate

    - by James D
    Hello, Plain-vanilla NHibernate setup, eg, no fluent NHibernate, no HQL, nothing except domain objects and NHibernate mapping files. I load objects via: _lightSabers = session.CreateCriteria(typeof(LightSaber)).List<LightSaber>(); I apply raw user input directly to one property on the "LightSaber" class: myLightSaber.NameTag = "Raw malicious text from user"; I then save the LightSaber: session.SaveOrUpdate(myLightSaber); Everything I've seen says that yes, under this situation you are immune to SQL injection, because of the way NHibernate parameterizes and escapes the queries under the hood. However, I'm also a relative NHibernate beginner so I wanted to double-check. *waves hand* these aren't the droids you're looking for. Thanks!

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  • Storing links to internal content pages in ASP.NET MVC

    - by mare
    I'm using a route like this routes.MapRoute( "PageBySlug", RouteType.Regular, "{slug}", new {controller = "Page", action = "Display", slug = "Default"}, null ); to map request to ~/Some-Page-Slug to ~/Page/Display/Some-Page-Slug. When adding content, user can choose to link to existing pages to create references and I then store those links in this format in the datastore: "/Some-Page-Slug". When I run the app in Cassini and pull the link out from datastore and attach it to A tag it looks like this http://localhost:93229/Some-Page-Slug and this link works. But when running the application in virtual directory under some website in IIS, the attached link generates this URL http://localhost/Some-Page-Slug, when it should be http://localhost/virtualdir/Some-Page-Slug. Of course, this generates 404 error. How can I solve this to be universally useful and working under all circumstances? Should I store it differently in the database or should I transform it into correct form in my Views at runtime and how to do that?

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  • Can I inject a SessionBean into a JEE AroundInvoke-Interceptor?

    - by Michael Locher
    I have an EAR with modules: foo-api.jar foo-impl.jar interceptor.jar In foo-api there is: @Local FooService // (interface of a local stateless session bean) In foo-impl there is: @Stateless FooServiceImpl implements FooService //(implementation of the foo service) In interceptor.jar I want public class BazInterceptor { @EJB private FooService foo; @AroundInvoke public Object intercept( final InvocationContext i) throws Exception { // do someting with foo service return i.proceed(); } The question is: Will a Java EE 5 compliant application server (e.g. JBoss 5) inject into the interceptor? If no, what is good strategy for accessing the session bean? To consider: Deployment ordering / race conditions

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  • Detecting that the stack is full in C/C++

    - by Martin Kristiansen
    When writing C++ code I've learned that using the stack to store memory is a good idea. But recently I ran into a problem: I had an experiment that had code that looked like this: void fun(unsigned int N) { float data_1[N*N]; float data_2[N*N]; /* Do magic */ } The code exploted with a seqmentation fault at random, and I had no idea why. It turned out that problem was that I was trying to store things that were to big on my stack, is there a way of detecting this? Or at least detecting that it has gone wrong?

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  • Core Data and many Entity

    - by mr.octobor
    I'm newbie and I must save "Ranking" and "Level" of user. I create file Ranking.xcdatamodel for save "Ranking" with entity name Ranking (property is Rank, Name) I can save and show it. but when I create entity Level (property is CurrentLevel) my program is crash and show this message Unresolved error Error Domain=NSCocoaErrorDomain Code=134100 UserInfo=0x60044b0 "Operation could not be completed. (Cocoa error 134100.)", { metadata = { NSPersistenceFrameworkVersion = 248; NSStoreModelVersionHashes = { Users = ; }; NSStoreModelVersionHashesVersion = 3; NSStoreModelVersionIdentifiers = ( ); NSStoreType = SQLite; NSStoreUUID = "41225AD0-B508-4AA7-A5E2-15D6990FF5E7"; "_NSAutoVacuumLevel" = 2; }; reason = "The model used to open the store is incompatible with the one used to create the store"; } I don't know how to save "Level" please suggest me.

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  • Serializing C# objects to DB

    - by Robert Koritnik
    I'm using a DB table with various different entities. This means that I can't have an arbitrary number of fields in it to save all kinds of different entities. I want instead save just the most important fields (dates, reference IDs - kind of foreign key to various other tables, most important text fields etc.) and an additional text field where I'd like to store more complete object data. the most obvious solution would be to use XML strings and store those. The second most obvious choice would be JSON, that usually shorter and probably also faster to serialize/deserialize... And is probably also faster. But is it really? My objects also wouldn't need to be strictly serializable, because JsonSerializer is usually able to serialize anything. Even anonymous objects, that may as well be used here. What would be the most optimal solution to solve this problem?

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  • WPF Application Slow Unresponsive when demonstrating using remote sharing software

    - by Kev
    After spending 14 hours on this I think its time to share my woes and see if anyone has experienced this issue before. Ill describe the issue and tests I have done to rule out certain things. Ok so I have a WPF application which loads in data from an SQL database. I am using DevExpress Components for datagrids, ribbons etc.. and FluentNhibernate to provide a session for database operations. I am also using log4net to log events to a textfile. Using the application on my laptop with SQL Express 2008 works fine.. the application starts up, retrieves 1000 records and I can tab through the controls on the ribbon. Now, I decided to demo the application to a third party and used remote login/sharing software online to share my desktop with the other person so as I could load the application on my laptop and they could view me using the application. Now, the application takes approx 45 seconds to load... 30 seconds with a blank database where as, when im not sharing out my screen using the online software the application loads in about 7-10 seconds. As well as that, even using the controls in the application during the demo were very sticky, slow and unresponsive. During the sharing session though however I was able to use other applications without any problems.. everything else worked fine. But I cannot understand how my application works ok under normal conditions , even browsing the net at the same time etc... BUT totally fails to perform correctly when I am sharing a session with another user... the CPU usage shot up to 100% too at times when the application was trying to start up... Please see below a list of 3rd party dlls I am using as references in my project. DevExpress dlls FluidKit PixelLab.WPF PixelLab.Common Galasoft WPF Kit FluentNHibernate NHibernate Nhibernate.ByteCode.Castle Skype4ComLib TXTEXTControl log4net LinqKit All of these DLLs are in the output folder with the application dlls created from the class assemblys in the project. So when installed via an installer on a machine the dlls will be in the same application folder as the application file itself. Many thanks

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  • NoSQL: How to retrieve a 'house' based on lat & long?

    - by Tedk
    I have a NoSQL system for storing real estate houses. One piece of information I have in my key-value store for each house is the longitude and latitude. If I wanted to retrieve all houses within a geo-lat/long box, like the SQL below: SELECT * from houses WHERE latitude IS BETWEEN xxx AND yyy AND longitude IS BETWEEN www AND zzz Question: How would I do this type of retrival with NoSQL ... using just a key-value store system? Even if I could do this with NoSQL, would it even be efficient or would simply going back to using a tradition database retrieve this type of information faster?

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