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• Confused with conditional and logical operators - VB.net

  - by AgentRev

  I'm kind of new to VB.net, and since I just finished a C# course, the lack of parentheses creates a lot of confusion on how to write certain combinations of operators. The C# equivalent of the line I am trying to reproduce in VB would be like this : if ( (a == 0 && b != null) || (a == 1 && c != null) ) I'm have no idea how to write this in VB, I've tried many combinations of And, Or, AndAlso, OrElse, etc. but I can't achieve the desired result. I can't find any clear example of C# v.s. VB.net comparison on operators, and the notes I have aren't helpful either. Can someone help me figure this out?

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• Linq query joining with a subquery

  - by Alan Fisher

  I am trying to reproduce a SQL query using a LINQ to Entities query. The following SQL works fine, I just don't see how to do it in LINQ. I have tried for a few hours today but I'm just missing something. SELECT h.ReqID, rs.RoutingSection FROM ReqHeader h JOIN ReqRoutings rr ON rr.ReqRoutingID = (SELECT TOP 1 r1.ReqRoutingID FROM ReqRoutings r1 WHERE r1.ReqID = h.ReqID ORDER BY r1.ReqRoutingID desc) JOIN ReqRoutingSections rs ON rs.RoutingSectionID = rr.RoutingSectionID Edit*** Here is my table scema- Requisitions: ReqID PK string ReqDate datetime etc... ReqRoutings: ID PK int ReqID FK RoutingSection FK int RoutingDate ReqRoutingSections: Id PK int RoutingSection string The idea is that each Requisition can be routed many times, for my query I need the last RoutingSection to be returned along with the Requisition info. Sample data: Requisitions: - 1 record ReqID 123456 ReqDate '12/1/2012' ReqRoutings: -- 3 records id 1 ReqID 123456 RoutingSection 3 RoutingDate '12/2/2012' id 2 ReqID 123456 RoutingSection 2 RoutingDate '12/3/2012' id 3 ReqID 123456 RoutingSection 4 RoutingDate '12/4/2012' ReqRoutingSections: -- 3 records id 2 Supervision id 3 Safety id 4 Qaulity Control The results of the query would be ReqID = '123456' RoutingSection = 'QualityControl' -- Last RoutingSection requisition was routed to

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• Cucumber testing with rails on mongoid-gridfs

  - by Deepak Lamichhane

  I am getting this weird error while running cucumber test: ERROR Mongo::OperationFailure: Database command 'filemd5' failed: {"errmsg"="exception: best guess plan requested, but scan and order required: query: { files_id: ObjectId('4d1abab3a15c84139c00006e') } order: { files_id: 1, n: 1 } choices: { $natural: 1 } ", "code"=13284, "ok"=0.0} I have a list of similar scenarios, where first scenario passes but all the other following scenario fails. I searched for it and I found that there is problem with indexing. But, I am not sure about what query to write. Furthermore, I can add the query on the mongo of the development. I want to make sure that the indexing is done in test too. If anyone has any idea on this, feel free.

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• I need to display users current location as text

  - by Taylor Satula

  Hi, I am new to iPhone development and really have no idea how to do what I am trying to implement. Here is my problem, I need to display the users current street and city as text in my iPhone app (See picture). I have seen many posts on stack overflow and other websites about how to do this but they are all just code examples. As I said before, I am a extreme beginner. I just need to show the MKReverseGeocoder and its output as text in my application. If someone could walk me through how/where to create the ReverseGeocoder and how to make it show up in my application I would be extremely grateful. I have searched for hours trying to find a beginner example but alas I cannot find one that lays it out step by step. I hope this can help me out.

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• JSON ARRAY and JSF

  - by Debbech

  Hi, Im working with JSF and EXT js. I have a JSONArray created in the server-side and I want to pass it to client-side. I used to get the array and put it in javascript var. but this tag adds a html tag (span) which make an error in javascript var ! this is the code I wrote : var data1 = <h:outputFormat value="#{actorBean.newactors}" /> and this is the code of my page after running : var data1 =<span>[[&quot;aaaaaaa&quot;,&quot;bbbbbbb&quot;]]</span> so do u have any idea how to get the array without all the tags added ? thanks

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• Generate markdown from source code doc-comments

  - by erikkallen

  Is there any easy way to generate markdown from source code comments? I'm looking for something similar to Sandcastle, but with Markdown (or something like it) as output. The full story is that I use DokuWiki to generate documentation. It has many nice properties, including that all its data is stored in text files. So my idea is that I should somehow be able to get my API docs into the same place as the rest of my documentation. So far my best bet seems to be to write a custom documenter for NDoc3, but perhaps someone has already done something similar which would save me the trouble. I realize I might need to tweak it a little due to slight syntax differences.

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• Hudson trigger builds remotely gives a forbidden 403 error

  - by Ritesh M Nayak

  I have a shell script on the same machine that hudson is deployed on and upon executing it, it calls wget on a hudson build trigger URL. Since its the same machine, I access it as http://localhost:8080/hudson/job/jobname/build?token=sometoken Typically, this is supposed to trigger a build on the project. But I get a 403 forbidden when I do this. Anybody has any idea why? I have tried this using a browser and it triggers the build, but via the command line it doesn't seem to work. Any ideas?

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• Setting pixel color of BMP/JPG file in C#.

  - by Jamie

  Hi guys, I'm trying to set a color of given pixel of the image. Here is the code snippet Bitmap myBitmap = new Bitmap(@"c:\file.bmp"); for (int Xcount = 0; Xcount < myBitmap.Width; Xcount++) { for (int Ycount = 0; Ycount < myBitmap.Height; Ycount++) { myBitmap.SetPixel(Xcount, Ycount, Color.Black); } } Every time I get the following exception: Unhandled Exception: System.InvalidOperationException: SetPixel is not supported for images with indexed pixel formats. The exception is thrown both for bmp and jpg files. I have no idea what is wrong. Thank you in advance for the reply! Cheers.

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• What VS Projecttype for Model and Database?

  - by Tim

  Hello folks, i've just started a new asp.net project which could increase fastly(a small erp-system for our company). So i thought it would be a good idea to split at least the model from the view/controller(the asp.net project). Because it could be that i need to access some classes and the database from a windows app in future, i dicided to put the Model into its own Project. What Visual Studio 2005 Professional Projecttype is most suitable for this requirement and why? SqlServerProject (DB is MS Sql Server 2005 EP) Class Library Web Service Application Database project no separate Project/other(keep in mind VS 2005 has no ASP.NET MVC-Project) Thanks

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• Can i bind an the datasource Index in a repeater/grid

  - by bill

  Hi All, I have a repeater.. and in my repeater i have a link that fires some JS. I would like to pass the itemIndex of the datasource in the JS. Is there some way to do this without using OnItemBound or OnItemCreated?? like.. <a href="#" onclick="dosomestuff(<%# this.item.index %>); return false;">Add Stuff</a> i know the syntax is completely wrong but hopefully you get the idea.. thanks!

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• Android: making a custom ListView independent of adapters ?

  - by wei

  I am adding a local database as a cache to a remote web service in my android application to answer queries. I used ArrayAdapters before for list views to display the results from the web service. Now with a database cache, the result could be either a Cursor(from database) or a List(from web), which means the adapter can be CursorAdapter or ArrayAdapter too. Creating two adapters for one query doesn't seem to be a good idea. So I am wondering what would be the best way to refactor my current code to add this database feature? Thanks,

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• GUI system architecture?

  - by topright

  I'm designing GUI (graphical user interface) system for a game engine (C++). Idea is to create a heirarchy of GUI controllers like Focusable, Hoverable, Dragable etc. Every GUI component can attach multiple controllers, they modify component's behaviour. I think it gives flexible system and protects from code duplication. Different instances of the same GUI class can have different complex behaviours (may be, even change it dynamically), so this approach looks practical. The other choice is to add focused, hovered, dragged etc. flags in the base GUI component class. It looks like overhead and not that flexible. Another solution is to use Decorator pattern and wrap objects with FocusDecorator, HoverDecorator etc. Maintaining such system looks a bit harder. Question: What are pitfalls in my solution? May be you have seen a better approaches in GUI systems? What are the best ways of implementing such flexible complex system?

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• cant start glassfish within netbeans

  - by noname

  when i click on Run it displays and error message: Starting GlassFish v3 Domain GlassFish v3 Domain start failed. /Volumes/Private/noname/Sites/projects/java/MyFirstServlet/nbproject/build-impl.xml:602: Deployment error: GlassFish v3 Domain start failed. See the server log for details. BUILD FAILED (total time: 2 minutes 0 seconds) but then i fire up Terminal in mac and use asadmin start-domain and it starts. and in netbeans i then Run the project and it fires up Safari and displays the content. but why cant glassfish start in netbeans? any idea?

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• Best way to implement refusing a value change by the user in Swing?

  - by Michael Borgwardt

  I have a JCheckBox that should not be checked by the user when a certain other field is empty. So now I want to have an error popup and then reset the checkbox (I've considered disabling the checkbox, but the connection to the other field is non-obvious, and a tooltip text IMO not visible enough). What's the correct way to do that in Swing? Through a PropertyVetoException? Where do I throw it and where do I catch it? My first (probably ugly) idea would be to add a ChangeListener that itself shows the popup and resets the value.

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• NSWindowController window?

  - by Ilija Tovilo

  I have a menu-bar based application, which displays a window, when the icon is clicked. It all works fine on Mac OS X Lion, but for some reason, an error occurs on Snow Leopard an sooner versions of Mac OS X. Anytime [TheWindowController window] is called the method stops, but the app keeps running. Because of this, I don't think that the window is just nil, it's corrupt, in some way. I have no Idea why this happens, and like I said, it only happens in Mac OS X Snow Leopard. Btw. I use ARC, if that matters at all. Thank you!

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• How many variables is to many when storing in _SESSION?

  - by steve

  Hi - I'm looking for an idea of best practices here. I have a web based application that has a number of hooks into other systems. Let's say 5, and each of these 5 systems has a number of flags to determine different settings the user has selected in said systems, lets say 5 settings per system (so 5*5). I am storing the status of these settings in the user sesion variables and was wondering is that a sufficient way of doing it? I'm learning php as I go along so not sure about any pitfalls that this could run me into!

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• SQL Server - Error when trying to reference a .mdf file

  - by Amokrane

  Hi, For a NUnit test I need to reference a .mdf file from a .config file. Unfortunately, I get the following error message: The FOR ATTACH option requires that at least the primary file be specified. An attempt to attach an auto-named database for file C:\....\*.mdf A database with the same name exists, or specified file cannot be opened, or it is located on UNC share. I looked for this error on google but didn't find anything that helped me solve my problem. Any idea? Thank you

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• CSS Problem, fixed contentarea with left and right sidebar?

  - by mathiregister

  Hey guys, i really need your help with a CSS-Layout. I tried a few time, however i've no chance (and actually no idea how) to solve it. Moreover I don't even know if it's possible the way I want it! The #mainContent should always be centered horizontally in the browserwindow. It should be 1024px in width and a 100% of the windowheight. Now the difficult part. I need two divs, one on the left side, one on the right side of the #mainContent. Both should be 100% in height, but should ALWAYS have the rest of the browserwindow. If the browserwindow has only 1024px in width #navLeft and #navRight are invisible. Is that even possible, if so, HOW? thank you

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• Should I use DTOs as my data models in MVVM?

  - by JonC

  I'm currently working on what will be my first real foray into using MVVM and have been reading various articles on how best to implement it. My current thoughts are to use my data models effectively as data transfer objects, make them serializable and have them exist on both the client and server sides. It seems like a logical step given that both object types are really just collections of property getters and setters and another layer in between seems like complete overkill. Obviously there would be issues with INotifyPropertyChanged not working correctly on the server side as there is no ViewModel to which to communicate, but as long as we are careful about constructing our proper domain model objects from data models in the service layer and not dealing the the data models on the server side I don't think it should be a big issue. I haven't found too much info about this approach in my reading, so I would like to know if this is a pretty standard thing, is this just assumed to be the de facto way of doing MVVM in a multi-tier environment? If I've got completely the wrong idea about things then thoughts on other approaches would be appreciated too.

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• Merge overlapping date intervals

  - by leoinfo

  Is there a better way of merging overlapping date intervals? The solution I came up with is so simple that now I wonder if someone else has a better idea of how this could be done. /***** DATA EXAMPLE *****/ DECLARE @T TABLE (d1 DATETIME, d2 DATETIME) INSERT INTO @T (d1, d2) SELECT '2010-01-01','2010-03-31' UNION SELECT '2010-04-01','2010-05-31' UNION SELECT '2010-06-15','2010-06-25' UNION SELECT '2010-06-26','2010-07-10' UNION SELECT '2010-08-01','2010-08-05' UNION SELECT '2010-08-01','2010-08-09' UNION SELECT '2010-08-02','2010-08-07' UNION SELECT '2010-08-08','2010-08-08' UNION SELECT '2010-08-09','2010-08-12' UNION SELECT '2010-07-04','2010-08-16' UNION SELECT '2010-11-01','2010-12-31' UNION SELECT '2010-03-01','2010-06-13' /***** INTERVAL ANALYSIS *****/ WHILE (1=1) BEGIN UPDATE t1 SET t1.d2 = t2.d2 FROM @T AS t1 INNER JOIN @T AS t2 ON DATEADD(day, 1, t1.d2) BETWEEN t2.d1 AND t2.d2 -- AND t1.d2 <= t2.d2 /***** this condition is useless *****/ IF @@ROWCOUNT = 0 BREAK END /***** RESULT *****/ SELECT StartDate = MIN(d1) , EndDate = d2 FROM @T GROUP BY d2 ORDER BY StartDate, EndDate /***** OUTPUT *****/ /***** StartDate EndDate 2010-01-01 2010-06-13 2010-06-15 2010-08-16 2010-11-01 2010-12-31 *****/ EDIT: I realized that the t1.d2 <= t2.d2 condition is not really useful.

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• Event handling for keyboard strokes

  - by david

  Hey, I'm trying to get familiar with the whole keyboard event detection thing. Here's my sample code. <fx:Script> <![CDATA[ import flash.events.KeyboardEvent; import mx.controls.Alert; private function init():void{ addEventListener(KeyboardEvent.KEY_DOWN,reportKeyDown); } private function reportKeyDown(event:KeyboardEvent):void { Alert.show("a key was pressed"); } ]]> </fx:Script> As you can see, I'm at stage 0 of playing around with it, but it won't work. Anyone has any idea what I should be doing instead? Thanks

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• Triangular bounding volumes

  - by Cheery

  I've come up with an alternative for beziers that might be easier to ray-trace, perhaps even though a plain vertex shader. Though there's missing a piece. I need to find the parametric surface equation from the surface normals I have for edge vertices. I also have to know it's peak and valley so I can constraint the depth of my bounding triangle. Image explains the overall idea: I build a bounding-volume from a control triangle. Then apply a function to each parametric coordinate of the triangle (s+t+u=1 where s,t,u = 0) to get the height coordinate for that certain point. Simply put, it produces a procedurally generated height-map for the triangle's surface. I just need to find a function that generates the height-map so I can make it work.

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• jQuery - color cycle animation with hsv colorspace?

  - by Sgt. Floyd Pepper

  Hi there, I am working on a project, which I need a special body-background for. The background-color should cycle through the color spectrum like a mood light. So I found this: http://buildinternet.com/2009/09/its-a-rainbow-color-changing-text-and-backgrounds/ "But" this snippet is working with the RGB colorspace which has some very light and dark colors in it. Getting just bright colors will only work with the HSV colorspace (e.g. having S and V static at 100 and letting H cycle). I don’t know how to convert and in fact how to pimp this snippet for my needs. Does anyone has an idea?? Thanks in advance. Best, Floyd

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• Maximum File Size and Pixels for Uploaded Business Documents

  - by webdevguy

  I am creating a php form that accepts an upload of business documents in a variety of formats .pdf, .doc, .tiff, .jpeg, etc. and I need to restrict the size of the files that are uploaded. It's trivial for me to restrict the file size, but I'm not sure if I should also restrict the max height/width, which are also available options. I will need to occasionally print these documents to 8.5 X 11inch paper and have them be legible, but don't really care if images come out. Should I restrict the pixels sizes or is that redundant with restricting the file size? If so, do you guys have a recommendations for max height/width for, say, a 5MB file size limit? I really have no idea what the relationship between pixel size and image size is or what the common pixel sizes are for scanned images. Also, what would be a reasonable size expectation for a legible print per page?

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• Sorting tab delimited text file based on multiple columns in natural way [duplicate]

  - by Vignesh

  This question already has an answer here: Sorting a column of CSV file resulting in 1123 appearing before 232 1 answer I am trying to sort a file based on all two columns Eg: chr19 1070019 1070020 chr16 869712 869713 chr1 1378131 1378132 chr12 189386 189387 chr4 254941 254942 chr16 1476500 1476501 chr2 1476810 1476811 chr19 313283 313284 chr17 595817 595818 chr18 656897 656898 chr19 1061829 1061830 I Tried sort -t $\t -k1,1 2,2 <filename> but doesn't work. I want the output to be sorted by first column and second column based on first column. I want to do a natural sort. Not lexical sorting. Eg: chr1 1378131 1378132 chr2 1476810 1476811 chr4 254941 254942 chr12 189386 189387 chr16 869712 869713 chr16 1476500 1476501 chr17 595817 595818 chr18 656897 656898 chr19 313283 313284 chr19 1061829 1061830 chr19 1070019 1070020 Anyone any idea?

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