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• How to use ORDER BY, LOWER .. in SQL SERVER 2008 with non-unicode languages

  - by hgulyan

  Hi, The question is about Armenian. I'm using sql server 2005, collation SQL_Latin1_General_CP1_CI_AS, data mostly is in Armenian and we can't use unicode. I tested on ms sql 2008 with a windows collation for armenian language ( Cyrillic_General_100_ ), I have found here, ( http://msdn.microsoft.com/en-us/library/ms188046.aspx ) but it didn't help. I have a function, that orders hex values and lower function, which takes each char in string and covnerts it to it's lower form, but it's not acceptable solution, it works really slow, calling that functions on every column of a huge table. Is there any solution for this issue not using unicode and working with hex values manually?

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• How do I modify the HttpResponse object in django ?

  - by Rohit

  I need the html returned using render_to_response to be escaped. I am unable to find any suitable documentation. Can someone point in some direction ? the code is : return render_to_response(template_name, {return render_to_response(template_name, { 'form': form, redirect_field_name: redirect_to, 'site': current_site, 'site_name': current_site.name, }, context_instance=RequestContext(request)) Here I need the response html text to be escaped. I way I know is reading template file in string and escaping it with re.escape() and then rendering it. whats a cleaner and simpler way to do that ??

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• Compiling Scala scripts. How works scalac?

  - by Arturo Herrero

  Groovy Groovy comes with a compiler called groovyc. For each script, groovyc generates a class that extends groovy.lang.Script, which contains a main method so that Java can execute it. The name of the compiled class matches the name of the script being compiled. For example, with this HelloWorld.groovy script: println "Hello World" That becomes something like this code: class HelloWorld extends Script { public static void main(String[] args) { println "Hello World" } } Scala Scala comes with a compiler called scalac. I don't know how it works. For example, with the same HelloWorld.scala script: println("Hello World") The code is not valid for scalac, because the compiler expected class or object definition, but works in Scala REPL interpreter. How is possible? Is it wrapped in a class before execution?

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• Jagged Edge Arrays in PHP

  - by chriscct7

  I want to store some data in (I guess a semi-2, semi-3d array) in PHP (5.3) What I need to do is store data about each floor like this: Floor Num of Spots Handicap Motorcyle Other 1 100 array(15,16,17) array (47,62) array (99,100) 2 100 array(15,16,17) array (47,62) array (99,100) and on The problem is, is if the Handicap+Motorcyle+Other were ints, I could just store the data in a 2d array. However, they aren't. So I was thinking I could make something almost like a 3D array, with the first two columns only being in 2D. The other thought I had was making a 2D array and for columns 3,4, and 5 instead of saving as array(15,16) //save like 1516 And then split at two digits (1 digit array numbers would be prefaced with a 0). However, I am wondering about the limit of the length of a string, because if I decide to move to a 3 digit length number in the array, like array(100, 104), and I need to store alot of numbers, I am thinking I am going to quickly exceed the max.

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• C1083 : Permission denied on .sbr files

  - by speps

  Hello, I am using Visual Studio 2005 (with SP1) and I am getting weird errors concerning .sbr files. These files, as I read on MSDN, are intermediate files for BSCMAKE to generate a .bsc file. The errors I get are, for example (on different builds) : 11string.cpp : fatal error C1083: Impossible d'ouvrir le fichier généré(e) par le compilateur : '.\debug\String.sbr' : Permission denied 58type.cpp : fatal error C1083: Impossible d'ouvrir le fichier généré(e) par le compilateur : '.\Debug/Type.sbr' : Permission denied Translation : cannot open compiler intermediate file It seems to be consistent (I have at least 5 or 6 examples like this) with a .cpp file being compiled twice in the same project, respectively : 11String.cpp *some warnings, 2 lines* 11String.cpp 58Type.cpp *some warnings and other files compiled, a lot of lines* 58Type.cpp I already checked the .vcproj files for duplicate entries and it does not seem to be the problem. I would appreciate any help regarding this issue. Deactivating the build of .bsc files seems to be a workaround but maybe someone has better information than this. Thanks.

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• LLBL Gen Predicate Filter

  - by Neil

  I am new to LLBLGen Pro and am checking for duplicate, I have the following SQL: SQL: select a.TopicId,atc.TopicCategoryId,a.Headline from article a inner join ArticleTopicCategory atc on atc.ArticleId = a.Id where a.TopicId = 'C0064FAE-093B-466E-8745-230534867D2F' and a.Headline = 'Test' and atc.TopicCategoryId in ('004D64F7-474C-48F9-9887-17B1E7532A84') Whenever I step though my function, it always returns 0: LLBLGen Code: public bool CheckDuplicateArticle(Guid topicId, List<Guid> categories, string headline) { ArticleCollection articles = new ArticleCollection(); PredicateExpression filter = new PredicateExpression(); RelationCollection relation = new RelationCollection(); relation.Add(ArticleEntity.Relations.ArticleTopicCategoryEntityUsingArticleId); filter.AddWithAnd(ArticleFields.TopicId == topicId); filter.AddWithAnd(ArticleTopicCategoryFields.Id == categories); filter.AddWithAnd(ArticleFields.Headline == headline); articles.GetMulti(filter, 0, null, relation); return articles.Count > 0; } Any help would be appreciated!

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• Update gridview from code behind in asp.net

  - by Zerotoinfinite

  Hi Experts, I have gridview in my asp.net 3.5 application [C#]. Which looks like this: AutoGenerateDeleteButton="true" DataKeyNames="studentId" runat="server" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowDeleting="GridView1_RowDeleting" OnRowUpdating="GridView1_RowUpdating" onpageindexchanging="GridView1_PageIndexChanging" onrowupdated="GridView1_RowUpdated" <EmptyDataTemplate> <asp:Label ID="lblNoRecord" runat="server" Text="No Record Found" ForeColor="Red"></asp:Label> </EmptyDataTemplate> </asp:GridView> Now, In rowUpdating event, I am writing the below code: protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { int mytext = Convert.ToInt16(GridView1.Rows[e.RowIndex].Cells[1].Text); string cConatiner = GridView1.Rows[e.RowIndex].Cells[4].Text; } In this, myText is giving me the correct value, i.e. of the 1st column but when I am changing the cell value to 1,2,3,4,5,6 I am getting empty. Am I doing it incorrectly ? Please help me. Thanks in advance.

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• What to pass to UserType, BlobType.setPreparedStatement session parameter

  - by dlots

  http://blog.xebia.com/2009/11/09/understanding-and-writing-hibernate-user-types/ I am attempting to defined a customer serialization UserType that mimics, the XStreamUserType referenced and provided here: http://code.google.com/p/aphillips/source/browse/commons-hibernate-usertype/trunk/src/main/java/com/qrmedia/commons/persistence/hibernate/usertype/XStreamableUserType.java My serializer outputs a bytearray that should presumably written to a Blob. I was going to do: public class CustomSerUserType extends DirtyCheckableUserType { protected SerA ser=F.g(SerA.class); public Class<Object> returnedClass() { return Object.class; } public int[] sqlTypes() { return new int[] {Types.BLOB}; } public Object nullSafeGet(ResultSet resultSet,String[] names,Object owner) throws HibernateException,SQLException { if() } public void nullSafeSet(PreparedStatement preparedStatement,Object value,int index) throws HibernateException,SQLException { BlobType.nullSafeSet(preparedStatement,ser.ser(value),index); } } Unfortunetly, the BlobType.nullSafeSet method requires the session. So how does one define a UserType that gets access to a servlet requests session? EDIT: There is a discussion of the issue here and it doesn't appear there is a solution: Best way to implement a Hibernate UserType after deprecations?

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• Theory of computation - Using the pumping lemma for context free languages

  - by Tony

  I'm reviewing my notes for my course on theory of computation and I'm having trouble understanding how to complete a certain proof. Here is the question: A = {0^n 1^m 0^n | n>=1, m>=1} Prove that A is not regular. It's pretty obvious that the pumping lemma has to be used for this. So, we have |vy| = 1 |vxy| <= p (p being the pumping length, = 1) uv^ixy^iz exists in A for all i = 0 Trying to think of the correct string to choose seems a bit iffy for this. I was thinking 0^p 1^q 0^p, but I don't know if I can obscurely make a q, and since there is no bound on u, this could make things unruly.. So, how would one go about this?

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• Django DecimalField returns "None" instead of empty value

  - by Ed

  Is there a way to force django to display nothing instead of "None" for a Decimal Field that's been left blank? In my template, I show a list of all the values for a particular field. Each value is hyperlinked to a page that displays the results of a query filtered on that value. But because there are some entries with null value, my list includes actual DecimalField entries and "None" for all those that are empty. When a user clicks on None, django throws a validation error because you cannot query a DecimalField using a string. I could write if statements checking all instances of decimal fields for Nones and skipping them, but that is far from an elegant solution. Any advice? This is one part of the code, though there are other templates that derive the None value in slightly different manners: {% for item in choices %} <a href={% url app_views.field_choice item %}>{{ item }}</a><br> {% endfor %}

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• C++: How to build an events / messaging system without void pointers?

  - by Jarx

  I'd like to have a dynamic messaging system in my C++ project, one where there is a fixed list of existing events, events can be triggered anywhere during runtime, and where you can subscribe callback functions to certain events. There should be an option for arguments passed around in those events. For example, one event might not need any arguments (EVENT_EXIT), and some may need multiple ones (EVENT_PLAYER_CHAT: Player object pointer, String with message) The first option for making this possible is allowing to pass a void pointer as argument to the event manager when triggering an event, and receiving it in the callback function. Although: I was told that void pointers are unsafe and I shouldn't use them. How can I keep (semi) dynamic argument types and counts for my events whilst not using void pointers?

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• Checking if file exist with RewriteCond in a chained RewriteRule

  - by gelilloabad

  Hello, I hope you could help me here. I have a RewriteRule which gives you a crossdomain.xml file depending on the domain name. I have it in a way that ignores the ".dev." string in the middle, example: Request: http://site1.dev.mydomain.com/crossdomain.xml Returns file: /etc/httpd/conf/crossdomain/site.mydomain.com.xml RewriteCond %{HTTP_HOST} "^(.*)\.dev\.(.*)" RewriteCond %{REQUEST_URI} "/crossdomain.xml" enter code hereRewriteRule ^(.+) %{HTTP_HOST}$1 [C] RewriteRule ^(.*)\.dev\.([^/]*)/crossdomain.xml /etc/httpd/conf/crossdomain/$1.$2.xml [L] Question: How do I check if the file exists? I tried adding this on top but it doesn't work: RewriteCond /etc/httpd/conf/crossdomain/$1.$2.xml -f I guess because it is a chained rule, no idea. Please help.

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• Trying to run psexec to remote to server and recycle app pool

  - by James

  If I run this from my command prompt it works fine. psexec \ServerName cscript.exe iisapp.vbs /a AppName /r I'm trying to do the same thing with C# console app. I'm using the below code but most of the time the application hangs and doesn't complete, and the few times it does it throws an error code. Am I doing this wrong? Anyone know where I can look up the error or error code? static void RecycleAppPool(string sServer) { Console.Clear(); ProcessStartInfo p = new ProcessStartInfo("psexec.exe", "\\\\" + sServer + " cscript.exe iisapp.vbs /a <AppName> /r"); p.RedirectStandardInput = true; p.UseShellExecute = false; Process.Start(p); } When it completes with error, looks like this "cscript.exe exited with error code -2147024664"

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• How to assign default values and define unique keys in Entity Framework 4 Designer

  - by csharpnoob

  Hello, I've had a look at the Entity Framework 4. While generating code for the SQL Server 2008 I came to the point where I want to define some default values for some fields. how to define in the designer for a Created DateTime Field the DateTime.Now default value? - Error 54: Default value (DateTime.Now) is not valid for DateTime. The value must be in the form 'yyyy-MM-dd HH:mm:ss.fffZ' how to make for code generation a string Field unique. Like E-Mail or Username can exists only once in the table. I've search alot in the internet and also checked my books Pro Entity Framework 4.0 and Programming Entity Framework. But none of them seems to come up with the default value issue, or using sql commands as default values for database generation. Another thing is, how to prevent on database generation always from droping tables? Instead i want to append non existing fields and keep the data. Thanks for any suggestions.

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• How do I compile Android Browser (or other android-supplied applications)

  - by afriza

  I want to add support for Arabic (or other languages which are currently unsupported) to the applications supplied by android platform (e.g. Browser) without having root-access. To add Arabic support (at least displaying only) in a normal application (using developer SDK), I will need to: Add fonts Modify (reshape) the characters to be rendered For illustration, if I have string a aaa, I will need to change a aaa into a bcd because letter a at the beginning, middle, and end of a word need to be changed to b,c and d respectively) But now I want to compile android's Browser (and other apps). I am planning to get the source codes for these applications and their dependencies and bundle them as stand-alone applications which do not require root-access, and thus do not void the warranty. Other solutions which void the warranty can be obtained here. My Questions: Is the application's (e.g. Browser's) source code + 'developer SDK' enough to accomplish this? Do I need to get the source code + the development environment for the android platform? Any tips?

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• Rotate a 2d matrix to the right

  - by adam

  I want a 2d matrix to rotate to the right, it compiles fine but when I try to the run it freezes. For example I want {{10,20,30},{40,50,60}} to rotate into {{40,10},{50,20},{60,30}} import java.util.*; public class Rotate{ public static int[][] rotate(int[][] m) { int [][] rotateM = new int[m[0].length][m.length]; for (int i= 0; i< m.length; i= i++){ for (int j= 0; j< m[0].length; j= j++){ rotateM[i][j] = m[j][m.length-i-1]; } } return rotateM; } public static void main(String[]args){ int[][]m = {{10,20,30}, {40,50,60}}; System.out.println(Arrays.toString(rotate(m))); } }

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• How can i take only integer input from keyboard and if input is invalid how do i ask user agaian

  - by fari

  This is what i have written so far but when exception is raised it does not again ask teh user for input. do{ System.out.println("Enter the number of stones to play with: "); BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String temp=br.readLine(); }while (key<0 && key>9); if(key<0 || key>10) throw new InvalidStartingStonesException(key); player1=new KeyBoardPlayer(); player2 = new KeyBoardPlayer(); this.player1=player1; this.player2=player2; state=new KalaGameState(key); } catch(NumberFormatException nFE) { System.out.println("Not an Integer");} catch(IOException e) { System.out.println(e); }

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• C# Memoization of functions with arbitrary number of arguments

  - by Lirik

  I'm trying to create a memoization interface for functions with arbitrary number of arguments, but I'm failing miserably. The first thing I tried is to define an interface for a function which gets memoized automatically upon execution: class EMAFunction:IFunction { Dictionary<List<object>, List<object>> map; class EMAComparer : IEqualityComparer<List<object>> { private int _multiplier = 97; public bool Equals(List<object> a, List<object> b) { List<object> aVals = (List<object>)a[0]; int aPeriod = (int)a[1]; List<object> bVals = (List<object>)b[0]; int bPeriod = (int)b[1]; return (aVals.Count == bVals.Count) && (aPeriod == bPeriod); } public int GetHashCode(List<object> obj) { // Don't compute hash code on null object. if (obj == null) { return 0; } // Get length. int length = obj.Count; List<object> vals = (List<object>) obj[0]; int period = (int) obj[1]; return (_multiplier * vals.GetHashCode() * period.GetHashCode()) + length;; } } public EMAFunction() { NumParams = 2; Name = "EMA"; map = new Dictionary<List<object>, List<object>>(new EMAComparer()); } #region IFunction Members public int NumParams { get; set; } public string Name { get; set; } public object Execute(List<object> parameters) { if (parameters.Count != NumParams) throw new ArgumentException("The num params doesn't match!"); if (!map.ContainsKey(parameters)) { //map.Add(parameters, List<double> values = new List<double>(); List<object> asObj = (List<object>)parameters[0]; foreach (object val in asObj) { values.Add((double)val); } int period = (int)parameters[1]; asObj.Clear(); List<double> ema = TechFunctions.ExponentialMovingAverage(values, period); foreach (double val in ema) { asObj.Add(val); } map.Add(parameters, asObj); } return map[parameters]; } public void ClearMap() { map.Clear(); } #endregion } Here are my tests of the function: private void MemoizeTest() { DataSet dataSet = DataLoader.LoadData(DataLoader.DataSource.FROM_WEB, 1024); List<String> labels = dataSet.DataLabels; Stopwatch sw = new Stopwatch(); IFunction emaFunc = new EMAFunction(); List<object> parameters = new List<object>(); int numRuns = 1000; long sumTicks = 0; parameters.Add(dataSet.GetValues("open")); parameters.Add(12); // First call for(int i = 0; i < numRuns; ++i) { emaFunc.ClearMap();// remove any memoization mappings sw.Start(); emaFunc.Execute(parameters); sw.Stop(); sumTicks += sw.ElapsedTicks; } Console.WriteLine("Average ticks not-memoized " + (sumTicks/numRuns)); sumTicks = 0; // Repeat call for (int i = 0; i < numRuns; ++i) { sw.Start(); emaFunc.Execute(parameters); sw.Stop(); sumTicks += sw.ElapsedTicks; } Console.WriteLine("Average ticks memoized " + (sumTicks/numRuns)); } The performance is confusing me... I expected the memoized function to be faster, but it didn't work out that way: Average ticks not-memoized 106,182 Average ticks memoized 198,854 I tried doubling the data instances to 2048, but the results were about the same: Average ticks not-memoized 232,579 Average ticks memoized 446,280 I did notice that it was correctly finding the parameters in the map and it going directly to the map, but the performance was still slow... I'm either open for troubleshooting help with this example, or if you have a better solution to the problem then please let me know what it is.

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• Counting the number of characters in a file

  - by Kat

  I'm writing a program that for one part asks for the program to print how many characters (including whitespaces) are in a file. The code I have right now though returns 0 every time though and I'm not sure why it isn't counting the characters. public int getcharCount(Scanner textFile) { int count = 0; while(textFile.hasNext()) { String line = textFile.nextLine(); for(int i=0; i < line.length(); i++) count++; } return count; }

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• Optimizing a Soundex Query for finding similar names

  - by xkingpin

  My application will offer a list of suggestions for English names that "sound like" a given typed name. The query will need to be optimized and return results as quick as possible. Which option would be most optimal for returning results quickly. (Or your own suggestion if you have one) A. Generate the Soundex Hash and store it in the "Names" table then do something like the following: (This saves generating the soundex hash for at least every row in my db per query right?) select name from names where NameSoundex = Soundex('Ann') B. Use the Difference function (This must generate the soundex for every name in the table?) select name from names where Difference(name, 'Ann') = 3 C. Simple comparison select name from names where Soundex(name) = Soundex('Ann') Option A seems like to me it would be the fastest to return results because it only generates the Soundex for one string then compares to an indexed column "NameSoundex" Option B should give more results than option A because the name does not have to be an exact match of the soundex, but could be slower Assuming my table could contain millions of rows, what would yield the best results?

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• Help with Role Based Security.

  - by Bill K

  Hello, I'm trying to understand role based security and I have the following method: [PrincipalPermission(SecurityAction.Demand, Role = "Administrators")] static void Test() { //administratos only can call this code } What I wanna do is that only users that are members of the Windows Administrators group can call this code, however, if I do the following, it works: GenericIdentity genericIdentity = new GenericIdentity("test", "test"); GenericPrincipal genericPrincipal = new GenericPrincipal(genericIdentity, new string[] { "Administrators" }); AppDomain.CurrentDomain.SetThreadPrincipal(genericPrincipal); Test(); So, how can I make it work only if the user is in the Administrators windows group? thanks!

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• Rails: link_to with block and GET params?

  - by bobthabuilda

  How can I achieve query string and URL parameters in a link_to block declaration? Right now, I have this, which works: <%= link_to 'Edit', :edit, :type => 'book', :id => book %> The above works, and outputs: http://localhost:3000/books/edit/1?type=book What I want to do is something like this: <% link_to :edit, :type => 'book', :id => book do %> ... <% end %> But the above format outputs: http://localhost:3000/books/edit/ Which isn't what I'm looking for... I want it to output a URL like the previous example. How can I achieve this?

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• ASP.NET Web Service - Passing a base object with list/collection?

  - by schooner

  We need to create a simple web service in ASP.NET that can be called from PHP or other languages. This in turn will be used to update records in a database for an item submission. The core part is fairly simple, we have a base set of fields for the object - first name, last name, birth date, city, etc. In addition however we need to accept a list of items associated with that object that can range from 0-n. Jan 1 2009, ABC May 1 2010, 123 Jun 30 2010, XXXXX What would be the best way to structure this so it can be easily passed to the ASP.NET web service and processed as a single call for the entire object? Would passing the list of items as a single delimted string be a wise approach? Ex: Jan 1 2009, ABC|May 1 2010, 123|Jun 30 2010, XXXXX

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• What is the purpose of return'ing $this when setting vars in the model

  - by TaMeR

  I am a self thought hobby programmer and therefore don't have the fundamentals always down the way you professionals do. So please excuse me if this is basic. What is the purpose or benefit of return'ing $this when setting vars in the model. I have seen this done in other places too but cant figure this out. Sample code: public function setAlias($Alias){ $this->_Alias = (string) $Alias; return $this; } public function getAlias(){ return $this->_Alias; }

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• Vbscript / webcam. using flash API - Save streaming file as image

  - by remi

  Hi. Based on a php app we've tried to developp our own webapp in vbscript. All is working well. The camera starts, etc.. The problem we're left with is the following: the flash API is streaming the content of the video to a webpage, this page saves the photo as a jpg. The PHP code we're trying to emulate is as follow $str = file_get_contents("php://input"); file_put_contents("/tmp/upload.jpg", pack("H*", $str)); After intensive googling the best we can come up with is Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Dim sImagePath As String = Server.MapPath("/registration/") & "test.jpg" Dim data As Byte() = Request.BinaryRead(Request.TotalBytes) Dim Ret As Array Dim imgbmp As New System.Drawing.Bitmap("test.jpg") Dim ms As MemoryStream = New MemoryStream(data) imgbmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg) Ret = ms.ToArray() Dim fs As New FileStream(sImagePath, FileMode.Create, FileAccess.Write) fs.Write(Ret, 0, Ret.Length) fs.Flush() fs.Close() End Sub which is not working, does anybody have any suggestion?

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