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  • Problems setting up an ASP.NET MVC site on IIS7 w/ Nhibernate

    - by Brandon
    When deploying my published website to the host (Its a shared hosting plan) I get this error: [NullReferenceException: Object reference not set to an instance of an object.] System.Web.PipelineStepManager.ResumeSteps(Exception error) +929 System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +91 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +508 I found this question which describes my problem, but I'm not initializing NHibernate in Application_Start, it is already being done in Init. The only other cause of this error I can find is that the Global.asax file is inheriting from a class other than HttpApplication, but I'm not doing that either. This is pretty much the Global.asax file protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); } public override void Init() { base.Init(); if (_wasNHibernateInitialized) return; // Initialize NHibernate // Other setup like the StructureMap initialization } Is there any other reason why an ASP.NET MVC application would give this error when being deployed to IIS7?

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  • Anyone using a CMS with a DAM back-end for Asset Management?

    - by Valien
    Anyone here have any experience with using a CMS system for content and populating the site with images/assets from a DAM system? Working with a large number of assets (photos, logos, files, etc) that will be stored on a DAM system for management, revisions, etc. Would like to build a front-end system to help serve up the assets for the users as well as keep the general site updated with non-asset information (like what's new, faq's, etc.) Any ideas/thoughts on this from anyone who has been down this path? Thanks! ~Allen

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  • how JVM arguments can be passed to apps started through java webstart in macOS.

    - by siva
    Hi, We have a application which is triggered from browser. This application consumes around 800 mb of memory. This works perfectly when invoked from any browsers in windows OS. The same application when triggered from MacOS throws an out of memory exception which occurs when the application is short of memory. Is there any way to increase the memory allocated for apps running in mac os environment. Also please let me know how JVM arguments can be passed to apps started through java webstart in macOS. Thanks in advance Regards, Siva

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  • How Can I Check an Object to See its Type and Return A Casted Object

    - by Russ Bradberry
    I have method to which I pass an object. In this method I check it's type and depending on the type I do something with it and return a Long. I have tried every which way I can think of to do this and I always get several compiler errors telling me it expects a certain object but gets another. Can someone please explain to me what I am doing wrong and guide me in the right direction? What I have tried thus far is below: override def getInteger(obj:Object) = { if (obj.isInstanceOf[Object]) null else if (obj.isInstanceOf[Number]) (obj:Number).longValue() else if (obj.isInstanceOf[Boolean]) if (obj:Boolean) 1 else 0 else if (obj.isInstanceOf[String]) if ((obj:String).length == 0 | (obj:String) == "null") null else try { Long.parse(obj:String) } catch { case e: Exception => throw new ValueConverterException("value \"" + obj.toString() + "\" of type " + obj.getClass().getName() + " is not convertible to Long") } }

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  • Epoch is not epoch if do a new Date(0L). Why ?

    - by Antoine Claval
    My problem is pretty straigtforward explained : if i do this : public class Main { public static void main(String[] args) throws Exception { Date d = new Date(0L ); System.out.println(d); } } I get the following output : Thu Jan 01 01:00:00 CET 1970 According to the doc, i was expecting : Thu Jan 01 00:00:00 CET 1970 I would like was going wrong... EDIT : Indeed, i read the doc too fast. I sould have Thu Jan 01 00:00:00 GMT 1970 So, how can i force the use of GMT, and ignore all local time ?

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  • django 1.1 beta issue

    - by ha22109
    Hello all, I m using django 1.1 beta.I m facing porblem in case of list_editable.First it was throughing exception saying need ordering in case of list_editable" then i added ordering in model but know it is giving me error.The code is working fine with django1.1 final. here is my code model.py class User(models.Model): advertiser = models.ForeignKey(WapUser,primary_key=True) status = models.CharField(max_length=20,choices=ADVERTISER_INVITE_STATUS,default='invited') tos_version = models.CharField(max_length=5) contact_email = models.EmailField(max_length=80) contact_phone = models.CharField(max_length=15) contact_mobile = models.CharField(max_length=15) contact_person = models.CharField(max_length=80) feedback=models.BooleanField(choices=boolean_choices,default=0) def __unicode__(self): return self.user.login class Meta: db_table = u'roi_advertiser_info' managed=False ordering=['feedback',] admin.py class UserAdmin(ReadOnlyAdminFields, admin.ModelAdmin): list_per_page = 15 fields = ['advertiser','contact_email','contact_phone','contact_mobile','contact_person'] list_display = ['advertiser','contact_email','contact_phone','contact_mobile','contact_person','status','feedback'] list_editable=['feedback'] readonly = ('advertiser',) search_fields = ['advertiser__login_id'] radio_fields={'approve_auto': admin.HORIZONTAL} list_filter=['status','feedback'] admin.site.register(User,UserADmin)

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  • is there a way to generate pdf containing non-ascii symbols with pisa from django template?

    - by mihailt
    Hi. i'm trying to generate a pdf from template using this snippet: def write_pdf(template_src, context_dict): template = get_template(template_src) context = Context(context_dict) html = template.render(context) result = StringIO.StringIO() pdf = pisa.pisaDocument(StringIO.StringIO(html.encode("UTF-8")), result) if not pdf.err: return http.HttpResponse(result.getvalue(), mimetype='application/pdf') except Exception('PDF error') but all non-latin symbols are not showing correctly, the template and view are saved using utf-8 encoding. i've tried saving view as ANSI and then to user unicode(html,"UTF-8"), but it throws TypeError. Also i thought that maybe it's because the default fonts somehow do not support utf-8 so according to pisa documentation i tried to set fontface in template body in style section. that still gave no results. Does any one have some ideas how to solve this issue?

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  • Reading Stacktrace in Objective-C?

    - by yar
    I don't like real-time debugging much, but if it's necessary I'll do it. Is there any way to figure out what line of code a StackTrace in Objective-C refers to? What about the variable it refers to? For instance: 2010-05-13 19:39:11.673 Thingers[21003:207] *** -[NSCFString count]: unrecognized selector sent to instance 0x3b0ebb0 2010-05-13 19:39:11.674 Thingers[21003:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFString count]: unrecognized selector sent to instance 0x3b0ebb0' 2010-05-13 19:39:11.675 Thingers[21003:207] Stack: ( 29303899 ... 11130 ) I see that we're talking about sending a count message to something that doesn't have it (maybe it's a NSCFString?), but is there any way to figure out what a/the named reference to that instance (0x3b0ebb0) refers to?

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  • OpenLayers: Raise event when map is zoomed or moved by user

    - by David Pfeffer
    I'm using OpenLayers to display OpenStreetMap maps. (Though, I'd assume this should be general enough to work for any map product...) I'm displaying some very sophisticated vector overlays, and the amount and resolution of the features I'm returning from the server via GeoJSON to overlay has proven too much for many computers. What I'd like to do now instead is to only send data befitting the resolution of the current zoom, and fitting the current view port. This should be relatively easy to do using the GetResolution and CalculateBounds methods on the Map object. However, I don't know when to call these methods because I can't find a way to register a function to be called when the user pans the map (changing the view port) or zooms the map (changing the resolution and view port). How can I get a callback when the user pans or zooms the map?

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  • unable to find an entry point named 'interlockedexchange'

    - by Miki Amit
    Hi , I built an application in c# vs2005 .net . Everything works fine when i run the application in win 32 bit, But when running the application in win 64 it crashes while trying to call the pinvoke interlockedexchange(which is within the kernel32.dll) function . This is the exception : unable to find an entry point named 'interlockedexchange' I didnt find the interlockedexchange function within the kernel32.dll under system32 directory but it was found under the syswow64 directory(in the kernel32.dll) . I guess that the .net runtime is configured to the system32 directory and not to the syswow64 . How is it possible to change this configuration ? Can you think of any other problem that could cause this? any help would be appreciated! thanks , Miki Amit

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  • Using PHP and SQLite

    - by Barry Shittpeas
    I am going to use a small SQLite database to store some data that my application will use. I cant however get the syntax for inserting data into the DB using PHP to correctly work, below is the code that i am trying to run: <?php $day = $_POST["form_Day"]; $hour = $_POST["form_Hour"]; $minute = $_POST["form_Minute"]; $type = $_POST["form_Type"]; $lane = $_POST["form_Lane"]; try { $db = new PDO('sqlite:EVENTS.sqlite'); $db->exec("INSERT INTO events (Day, Hour, Minute, Type, Lane) VALUES ($day, $hour, $minute, $type, $lane);"); $db = NULL; } catch(PDOException $e) { print 'Exception : '.$e->getMessage(); } ?> I have successfully created a SQLite database file using some code that i wrote but i just cant seem to insert data into the database.

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  • Can I check wheter Linq 2 SQL's DataContext is tracking entities?

    - by Thomas Jespersen
    We want to throw an exception, if a user calls DataContext.SubmitChanges() and the DataContext is not tracking anything. That is... it is OK to call SubmitChanges if there are no inserts, updates or deletes. But we want to ensure that the developer didn't forget to attach the entity to the DataContext. Even better... is it possible to get a collection of all entities that the DataContext is tracking (including those that are not changed)? PS: The last question I asked were answered with: "do it this way instead"... please don't :-)

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  • DLL export of a static function

    - by Begbie00
    Hi all - I have the following static function: static inline HandVal StdDeck_StdRules_EVAL_N( StdDeck_CardMask cards, int n_cards ) Can I export this function in a DLL? If so, how? Thanks, Mike Background information: I'm doing this because the original source code came with a VS project designed to compile as a static (.lib) library. In order to use ctypes/Python, I'm converting the project to a DLL. I started a VS project as a DLL and imported the original source code. The project builds into a DLL, but none of the functions (including functions such as the one listed above) are exported (as confirmed by both the absence of dllexport in the source code and tools such as DLL Export Viewer). I tried to follow the general advice here (create an exportable wrapper function within the header) to no avail...functions still don't appear to be exported.

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  • Should I use dialog boxes in my web application?

    - by Tom
    I'm developing a typical web application with functions like add, remove, view, search and other yada yada. However, I'm uncertain how much I should rely on dialog boxes. Should I have a dialog box for adding information to the system or perhaps only as a confirmation when deleting something? I could also, for example, use a login dialog box instead of a login page. Should modern web sites be designed so that they use dialog boxes? Are there any general guidelines for when to use a dialog box in a web application or is it more "when I feel like it"?

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  • Gmail freezes on display:none

    - by kambamsu
    Hi, I have a "div" which i insert in everypage, inside which resides my plugin. In certain pages where i might not need to use the plugin, i do a display:none on the div. This seems to work perfectly fine in all browsers. The only exception to this seems to be the "google.com" pages. Whether it be the search page or the gmail page, it seems to freeze once i do this display:none. By freeze i mean that none of the links are clickable after this. Is there something specific with these pages that i'm missing?? Any help would be appreciated. Thanks

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  • 'Programming by Coincidence' Excercise: Java File Writer

    - by Tapas
    I just read the article Programming by Coincidence. At the end of the page there are excercises. A few code fragments that are cases of "programming by coincidence". But I cant figure out the error in this piece: This code comes from a general-purpose Java tracing suite. The function writes a string to a log file. It passes its unit test, but fails when one of the Web developers uses it. What coincidence does it rely on? public static void debug(String s) throws IOException { FileWriter fw = new FileWriter("debug.log", true); fw.write(s); fw.flush(); fw.close(); } What is wrong about this?

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  • JSF Deferred EL conditional syntax problem

    - by Mark Lewis
    Hello I can't find any resources which can answer why I'm getting an error with this: oncomplete="#{MyBacking.oError ? #{rich:component('oErrorPanel')}.show() : return false;}" in a richfaces a4j:commandButton. oError is referring to a method in my bean called isOError. I'm getting the error SEVERE: Servlet.service() for servlet Faces Servlet threw exception org.apache.el.parser.ParseException: Encountered " "?" "? "" at line 1, column 30. Was expecting one of: "}" ... "." ... ... I want to say 'if a method returns true, show modal panel A otherwise false'. Any help much appreciated.

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  • Bind a users role to dropdown?

    - by Dynde
    Hi... I'm trying to bind a selected user's role to a dropdown-list. The purpose of this is to be able to change said user's role. I'm attempting this inside a formview hooked up to a linqdatasource which contains a row from the aspnet_User table. The dropdown list is hooked up to a linqdatasource of all the roles in the aspnet_Roles table (with DataValueField="RoleID", DataTextField="RoleName"). I figured it would be possible with something like: SelectedValue='<%# Bind("aspnet_UsersInRole[0].aspnet_Role.RoleID") %>' But this throws a parser exception, about the bind call not being correctly formatted. The roles are there, they show up when I remove the "SelectedValue" Can anyone point me in the right direction?

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  • In your experience, what has inspired you to change a fundamental programming tool

    - by Dr J
    A lot of what I am working on is changing the mindset of a community of developers. Moving them from one tool to another, or to picking up a new tool. What are some of the suggested or recommended ways to get a community to pick up a new meme? While we can mandate tool usage, this is a last resort. I would rather have the developers move to any new tools of their own accord. I'm not a programmer, I need to understand why a programmer will move from one tool to another. Edited the title thanks to a fabulous comment! My world runs on Meme's, tipping points, and general pressures. This is why I needed to ask. And clarifying yet more- I am the middle manager needing to plan and manage an implementation and not a sales person.

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  • How to set the skin of a DotNetNuke page through code?

    - by ks78
    I'm working on a DNN module that creates DNN pages (tabs) and places DNN modules on them through code. So, far that's working very well. However, I'd like it to also be able to programmatically set the page's skin and place the modules in the appropriate pane. Does anyone know how to do this using code? Solution: I set SkinSrc and ContainerSrc as mika suggested. Here's my source, if you're interested. This is where I set SkinSrc. ''' <summary>Create new DNN tab/page.</summary> Private Function CreatePage(ByVal ParentID As Integer, ByVal PageName As String, ByVal PageTitle As String, ByVal Description As String, ByVal Keywords As String, ByVal Permissions As TabPermissionCollection, Optional ByVal SkinSrc As String = "", Optional ByVal isVisible As Boolean = True, Optional ByVal LoadDefaultModules As Boolean = True) As Tabs.TabInfo Try Dim tabCtrlr As New TabController Dim newTab As New Tabs.TabInfo Dim newPermissions As TabPermissionCollection = newTab.TabPermissions Dim permissionProvider As PermissionProvider = permissionProvider.Instance Dim infPermission As TabPermissionInfo ' set new page properties newTab.PortalID = PortalId newTab.TabName = PageName newTab.Title = PageTitle newTab.Description = Description newTab.KeyWords = Keywords newTab.IsDeleted = False newTab.IsSuperTab = False newTab.IsVisible = isVisible newTab.DisableLink = False newTab.IconFile = "" newTab.Url = "" newTab.ParentId = ParentID 'add skinsrc if specified If (SkinSrc.Length > 0) Then newTab.SkinSrc = SkinSrc ' create new page tabCtrlr.AddTab(newTab, LoadDefaultModules) ' copy permissions selected in Permissions collection For index As Integer = 0 To (Permissions.Count - 1) infPermission = New TabPermissionInfo infPermission.AllowAccess = Permissions(index).AllowAccess infPermission.RoleID = Permissions(index).RoleID infPermission.RoleName = Permissions(index).RoleName infPermission.TabID = Permissions(index).TabID infPermission.PermissionID = Permissions(index).PermissionID 'save permission info newPermissions.Add(infPermission, True) permissionProvider.SaveTabPermissions(newTab) Next index 'return TabInfo of new page Return newTab Catch ex As Exception 'failure Return New Tabs.TabInfo End Try End Function These next two functions were taken from the DNN source and tweaked slightly, so I can't take credit for much of them. Also, if you use these in your own modules there could be issues when upgrading DNN. Although the upgrade from 5.05 to 5.06 went smoothly for me. In the AddNewModule function, I used ContainerSrc to specify the custom container to use. PaneName is the property used to specify which panel the module should be placed in. #Region "From DNN Source --mostly" #Region "Enums" Private Enum ViewPermissionType View = 0 Edit = 1 End Enum #End Region ''' ----------------------------------------------------------------------------- ''' <summary>Adds a New Module to a Pane</summary> ''' <param name="align">The alignment for the Module</param> ''' <param name="desktopModuleId">The Id of the DesktopModule</param> ''' <param name="permissionType">The View Permission Type for the Module</param> ''' <param name="title">The Title for the resulting module</param> ''' <param name="paneName">The pane to add the module to</param> ''' <param name="position">The relative position within the pane for the module</param> ''' ----------------------------------------------------------------------------- Private Function AddNewModule(ByVal TabID As Integer, ByVal title As String, ByVal desktopModuleId As Integer, ByVal paneName As String, ByVal position As Integer, ByVal permissionType As ViewPermissionType, ByVal align As String) As Integer Dim objTabController As New TabController Dim objTabPermissions As TabPermissionCollection = objTabController.GetTab(TabID, PortalId, True).TabPermissions Dim objPermissionController As New PermissionController Dim objModules As New ModuleController Dim objModuleDefinition As ModuleDefinitionInfo Dim objEventLog As New Services.Log.EventLog.EventLogController Dim newModuleID As Integer Dim j As Integer Try Dim desktopModule As DesktopModuleInfo = Nothing If Not DesktopModuleController.GetDesktopModules(PortalSettings.PortalId).TryGetValue(desktopModuleId, desktopModule) Then Throw New ArgumentException("desktopModuleId") End If Catch ex As Exception LogException(ex) End Try Dim UserId As Integer = -1 If Request.IsAuthenticated Then Dim objUserInfo As Users.UserInfo = UserController.GetCurrentUserInfo UserId = objUserInfo.UserID End If For Each objModuleDefinition In ModuleDefinitionController.GetModuleDefinitionsByDesktopModuleID(desktopModuleId).Values Dim objModule As New ModuleInfo objModule.Initialize(PortalSettings.PortalId) objModule.PortalID = PortalSettings.PortalId objModule.TabID = TabID objModule.ModuleOrder = position If title = "" Then objModule.ModuleTitle = objModuleDefinition.FriendlyName Else objModule.ModuleTitle = title End If objModule.PaneName = paneName objModule.ModuleDefID = objModuleDefinition.ModuleDefID If objModuleDefinition.DefaultCacheTime > 0 Then objModule.CacheTime = objModuleDefinition.DefaultCacheTime If Portals.PortalSettings.Current.DefaultModuleId > Null.NullInteger AndAlso Portals.PortalSettings.Current.DefaultTabId > Null.NullInteger Then Dim defaultModule As ModuleInfo = objModules.GetModule(Portals.PortalSettings.Current.DefaultModuleId, Portals.PortalSettings.Current.DefaultTabId, True) If Not defaultModule Is Nothing Then objModule.CacheTime = defaultModule.CacheTime End If End If End If Select Case permissionType Case ViewPermissionType.View objModule.InheritViewPermissions = True Case ViewPermissionType.Edit objModule.InheritViewPermissions = False End Select ' get the default module view permissions Dim arrSystemModuleViewPermissions As ArrayList = objPermissionController.GetPermissionByCodeAndKey("SYSTEM_MODULE_DEFINITION", "VIEW") ' get the permissions from the page For Each objTabPermission As TabPermissionInfo In objTabPermissions If objTabPermission.PermissionKey = "VIEW" AndAlso permissionType = ViewPermissionType.View Then 'Don't need to explicitly add View permisisons if "Same As Page" Continue For End If ' get the system module permissions for the permissionkey Dim arrSystemModulePermissions As ArrayList = objPermissionController.GetPermissionByCodeAndKey("SYSTEM_MODULE_DEFINITION", objTabPermission.PermissionKey) ' loop through the system module permissions For j = 0 To arrSystemModulePermissions.Count - 1 ' create the module permission Dim objSystemModulePermission As PermissionInfo objSystemModulePermission = CType(arrSystemModulePermissions(j), PermissionInfo) If objSystemModulePermission.PermissionKey = "VIEW" AndAlso permissionType = ViewPermissionType.Edit AndAlso _ objTabPermission.PermissionKey <> "EDIT" Then 'Only Page Editors get View permissions if "Page Editors Only" Continue For End If Dim objModulePermission As ModulePermissionInfo = AddModulePermission(objModule, _ objSystemModulePermission, _ objTabPermission.RoleID, objTabPermission.UserID, _ objTabPermission.AllowAccess) ' ensure that every EDIT permission which allows access also provides VIEW permission If objModulePermission.PermissionKey = "EDIT" And objModulePermission.AllowAccess Then Dim objModuleViewperm As ModulePermissionInfo = AddModulePermission(objModule, _ CType(arrSystemModuleViewPermissions(0), PermissionInfo), _ objModulePermission.RoleID, objModulePermission.UserID, _ True) End If Next 'Get the custom Module Permissions, Assume that roles with Edit Tab Permissions 'are automatically assigned to the Custom Module Permissions If objTabPermission.PermissionKey = "EDIT" Then Dim arrCustomModulePermissions As ArrayList = objPermissionController.GetPermissionsByModuleDefID(objModule.ModuleDefID) ' loop through the custom module permissions For j = 0 To arrCustomModulePermissions.Count - 1 ' create the module permission Dim objCustomModulePermission As PermissionInfo objCustomModulePermission = CType(arrCustomModulePermissions(j), PermissionInfo) AddModulePermission(objModule, objCustomModulePermission, _ objTabPermission.RoleID, objTabPermission.UserID, _ objTabPermission.AllowAccess) Next End If Next objModule.AllTabs = False objModule.Alignment = align 'apply Custom Container to module objModule.ContainerSrc = CONTAINER_TRANSPARENT_PLAIN newModuleID = objModules.AddModule(objModule) Next Return newModuleID End Function ''' ----------------------------------------------------------------------------- ''' <summary>Adds a Module Permission</summary> ''' <param name="permission">The permission to add</param> ''' <param name="roleId">The Id of the role to add the permission for.</param> ''' ----------------------------------------------------------------------------- Private Function AddModulePermission(ByVal objModule As ModuleInfo, ByVal permission As PermissionInfo, ByVal roleId As Integer, ByVal userId As Integer, ByVal allowAccess As Boolean) As ModulePermissionInfo Dim objModulePermission As New ModulePermissionInfo objModulePermission.ModuleID = objModule.ModuleID objModulePermission.PermissionID = permission.PermissionID objModulePermission.RoleID = roleId objModulePermission.UserID = userId objModulePermission.PermissionKey = permission.PermissionKey objModulePermission.AllowAccess = allowAccess ' add the permission to the collection If Not objModule.ModulePermissions.Contains(objModulePermission) Then objModule.ModulePermissions.Add(objModulePermission) End If Return objModulePermission End Function #End Region

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  • Are there any widespread, modern Java coding conventions?

    - by brianegge
    Sun's "Code Conventions for the Java Programming Language" was last updated April 1999. Ten years later a lot has changed in the language, as well as general usage patterns. Are there more up to date, widely adopted standards? Most guidelines omit specifying file encoding and line endings. Sun recommends mixed tabs and spaces. The Eclipse IDE defaults to Eclipse's standard, which is tabs only. The Maven style guide is spaces only. Many style guides, such as JBoss, follow Sun's guidelines, but prefer K&R braces instead of OTBS. Each Apache project has it's own style guide, with slight differences between each one.

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  • How to get Content types

    - by Gaby
    Hi, I'm developing a windows application, that talks to SharePoint via its built in web services, and i want to get all content types available on a SharePoint site, I'm trying to use Web.Webs WebsService = new Web.Webs(); WebsService.Credentials=credentials; WebsService.Url="url of the web service"; XmlNode listOfContentTypes = WebsService.GetContentTypes(); If credentials have administrator privileges i can get the list of all the content types available, But if credentials don't have administrator privileges a 401 exception is thrown (not enought permission). My question is: How can i get all content types available on a SharePoint site if i don't have administrator priviliges?

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  • how to store BigInteger values in oracle database.

    - by Bipul
    I have connected Java program to Oracle database using JDBC. I want to store BigInteger values(512 bits) in the database. What should be the type of the column? I m trying like this: I have taken a column of number type in the database. I converted BigInteger to BigDecimal like this: BigInteger b=new BigInteger("5779857570957802579079"); Number n =b; BigDecimal d=(BigDecimal)n; PreparedStatement pstmt=con.prepareStatemant("insert into database values(?,?)"); pstmt.setString(1,"john"); pstmt.setBigDecimal(2,d); I am getting the following exception: javax.servlet.ServletException: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.math.BigDecimal root cause java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.math.BigDecimal Is there anything wrong in this code snippet? If there is, please suggest other methods.

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  • Should one use < or <= in a for loop

    - by Eugene Katz
    If you had to iterate through a loop 7 times, would you use: for (int i = 0; i < 7; i++) or: for (int i = 0; i <= 6; i++) There are two considerations: performance readability For performance I'm assuming Java or C#. Does it matter if "less than" or "less than or equal to" is used? If you have insight for a different language, please indicate which. For readability I'm assuming 0-based arrays. UPD: My mention of 0-based arrays may have confused things. I'm not talking about iterating through array elements. Just a general loop. There is a good point below about using a constant to which would explain what this magic number is. So if I had "int NUMBER_OF_THINGS = 7" then "i <= NUMBER_OF_THINGS - 1" would look weird, wouldn't it.

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  • 'Generic' ViewModel

    - by Ian MacPherson
    Using EF 4, I have several subtypes of a 'Business' entity (customers, suppliers, haulage companies etc). They DO need to be subtypes. I am building a general viewmodel which calls into a service from which a generic repository is accessed. As I have 4 subtypes, it would be good to have a 'generic' viewmodel used for all of these. Problem is of course is that I have to call a specific type into my generic repository, for example: BusinessToRetrieve = _repository .LoadEntity<Customer>(o => o.CustomerID == customerID); It would be good to be able to call <SomethingElse>, somethingElse being one or other of the subtypes), otherwise I shall have to create 4 near identical viemodels, which seems a waste of course! The subtype entity name is available to the viewmodel but I've been unable to figure out how to make the above call convert this into a type. An issue with achieving what I want is that presumably the lambda expression being passed in wouldn't be able to resolve on a 'generic' call ?

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