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  • SQL Server Compact 'Data Directory' macro in Connection String - more info needed

    - by codeulike
    So, as described on this msdn page, when you define a Connection String for SQL Server Compact 3.5, you can use the "Data Directory" macro, like this: quote from this msdn page: Data Directory Support SQL Server Compact 3.5 now supports the Data Directory macro. This means that if you add the string |DataDirectory| (enclosed in pipe symbols) to a file path, it will resolve to the path of the database. For example, consider the connection string: "Data Source= c:\program files\MyApp\Mydb.sdf" When using Data Directory, you can instead use the following connection string: "Data Source = |DataDirectory|\Mydb.sdf" For more information, see How to: Deploy a SQL Server Compact 3.5 Database with an Application. However, the 'for more information' link on msdn doesn't actually give any more information. So my question is: How does the |Data Directory| macro translate at run time? For WinForm apps, it seems to just give the location of the executable. Or is it more complicated than that?

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  • Compile classfile issue in Spring 3

    - by Prajith R
    I have used spring framework 3 for my application. Everything is ok while developed in Netbeans But i need a custom build and done for the same The build created without any issue, but i got the following error The error occurred while calling the following method @RequestMapping(value = "/security/login", method = RequestMethod.POST) public ModelAndView login(@RequestParam String userName, @RequestParam String password, HttpServletRequest request) { ...................... But There is no issue while creating the war with netbeans (I am sure it is about the compilation issue) have you any experiance on this issue ... There is any additional javac argument for compile the same (netbeans used there custom task for the compilation) type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public org.springframework.web.servlet.ModelAndView com.mypackage.security.controller.LoginController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpServletRequest)]; nested exception is java.lang.IllegalStateException: No parameter name specified for argument of type [java.lang.String], and no parameter name information found in class file either. org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:659) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) com.mypackage.security.controller.AuthFilter.doFilter(Unknown Source) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) root cause org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public org.springframework.web.servlet.ModelAndView com.mypackage.security.controller.LoginController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpServletRequest)]; nested exception is java.lang.IllegalStateException: No parameter name specified for argument of type [java.lang.String], and no parameter name information found in class file either. org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171) org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414) org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) com.mypackage.security.controller.AuthFilter.doFilter(Unknown Source) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) root cause java.lang.IllegalStateException: No parameter name specified for argument of type [java.lang.String], and no parameter name information found in class file either. org.springframework.web.bind.annotation.support.HandlerMethodInvoker.getRequiredParameterName(HandlerMethodInvoker.java:618) org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestParam(HandlerMethodInvoker.java:417) org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:277) org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:163) org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414) org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) com.mypackage.security.controller.AuthFilter.doFilter(Unknown Source) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.

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  • WPF RichTextBox with no width set

    - by Mick
    I have the following XAML code: <Window x:Class="RichText_Wrapping.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1"> <Grid> <RichTextBox Height="100" Margin="2" Name="richTextBox1"> <FlowDocument> <Paragraph> This is a RichTextBox - if you don't specify a width, the text appears in a single column </Paragraph> </FlowDocument> </RichTextBox> </Grid> ... If you create this window in XAML, you can see that when you don't specify a width for the window, it wraps the text in a single column, one letter at a time. Is there something I'm missing? If it's a known deficiency in the control, is there any workaround? Thanks, Michael

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  • Error details in embedded IronPython

    - by Achim
    Hi, I'm executing IronPython in my application. A script produces an UnboundNameException with the message "name 'source' is not defined". Because the script is correct in my opinion I would need more error information, but I'm not able to get them from the exception. The exception itself seems not to contain any information about line number of the source of the exception or something like this. I searched on Google, but all available information seems to be outdated. The Data dictionary of my exception is empty which means that Data["PythonExceptionInfo"] does not exist. The file version of my IronPython assembly is 2.0.20209.0 Any hint how to get more error details? cheers, Achim

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  • Translate ImageButton from C# to XAML

    - by Bill
    I worked out the C# code to create an ImageButton (below) that has three images (one base-image and two overlays) and three text boxes as the face of the button. I am inheriting from the Button class, which unfortunately includes several components that I didn't realize would surface until after coding and need to remove, namely the bright-blue surrounding border on IsMouseOver, and any visible borders between the buttons, as the buttons will end up in a wrapPanel and the borders need to be seamless. Now that the format has been worked out in C#, I expect that I need to translate to XAML so that I can create a ControlTemplate to get the functionality necessary, however I am not certain as to the process of translating from C# to XAML. Can anyone steer me in the right direction? public class ACover : Button { Image cAImage = null; Image jCImage = null; Image jCImageOverlay = null; TextBlock ATextBlock = null; TextBlock AbTextBlock = null; TextBlock ReleaseDateTextBlock = null; private string _TracksXML = ""; public ACover() { Grid cArtGrid = new Grid(); cArtGrid.Background = new SolidColorBrush(Color.FromRgb(38, 44, 64)); cArtGrid.Margin = new System.Windows.Thickness(5, 10, 5, 10); RowDefinition row1 = new RowDefinition(); row1.Height = new GridLength(225); RowDefinition row2 = new RowDefinition(); row2.Height = new GridLength(0, GridUnitType.Auto); RowDefinition row3 = new RowDefinition(); row3.Height = new GridLength(0, GridUnitType.Auto); RowDefinition row4 = new RowDefinition(); row4.Height = new GridLength(0, GridUnitType.Auto); cArtGrid.RowDefinitions.Add(row1); cArtGrid.RowDefinitions.Add(row2); cArtGrid.RowDefinitions.Add(row3); cArtGrid.RowDefinitions.Add(row4); ColumnDefinition col1 = new ColumnDefinition(); col1.Width = new GridLength(0, GridUnitType.Auto); cArtGrid.ColumnDefinitions.Add(col1); jCImage = new Image(); jCImage.Height = 240; jCImage.Width = 260; jCImage.VerticalAlignment = VerticalAlignment.Top; jCImage.Source = new BitmapImage(new Uri(Properties.Settings.Default.pathToGridImages + "jc.png", UriKind.Absolute)); cArtGrid.Children.Add(jCImage); cArtImage = new Image(); cArtImage.Height = 192; cArtImage.Width = 192; cArtImage.Margin = new System.Windows.Thickness(3, 7, 0, 0); cArtImage.VerticalAlignment = VerticalAlignment.Top; cArtGrid.Children.Add(cArtImage); jCImageOverlay = new Image(); jCImageOverlay.Height = 192; jCImageOverlay.Width = 192; jCImageOverlay.Margin = new System.Windows.Thickness(3, 7, 0, 0); jCImageOverlay.VerticalAlignment = VerticalAlignment.Top; jCImageOverlay.Source = new BitmapImage(new Uri( Properties.Settings.Default.pathToGridImages + "jc-overlay.png", UriKind.Absolute)); coverArtGrid.Children.Add(jCImageOverlay); ATextBlock = new TextBlock(); ATextBlock.Foreground = new SolidColorBrush(Color.FromRgb(173, 176, 198)); ATextBlock.Margin = new Thickness(10, -10, 0, 0); cArtGrid.Children.Add(ATextBlock); AlTextBlock = new TextBlock(); AlTextBlock.Margin = new Thickness(10, 0, 0, 0); AlTextBlock.Foreground = new SolidColorBrush(Color.FromRgb(173, 176, 198)); cArtGrid.Children.Add(AlTextBlock); RDTextBlock = new TextBlock(); RDTextBlock.Margin = new Thickness(10, 0, 0, 0); RDTextBlock.Foreground = new SolidColorBrush(Color.FromRgb(173, 176, 198)); cArtGrid.Children.Add(RDTextBlock); Grid.SetColumn(jCImage, 0); Grid.SetRow(jCImage, 0); Grid.SetColumn(jCImageOverlay, 0); Grid.SetRow(jCImageOverlay, 0); Grid.SetColumn(cArtImage, 0); Grid.SetRow(cArtImage, 0); Grid.SetColumn(ATextBlock, 0); Grid.SetRow(ATextBlock, 1); Grid.SetColumn(AlTextBlock, 0); Grid.SetRow(AlTextBlock, 2); Grid.SetColumn(RDTextBlock, 0); Grid.SetRow(RDTextBlock, 3); this.Content = cArtGrid; } public string A { get { if (ATextBlock != null) return ATextBlock.Text; else return String.Empty; } set { if (ATextBlock != null) ATextBlock.Text = value; } } public string Al { get { if (AlTextBlock != null) return AlTextBlock.Text; else return String.Empty; } set { if (AlTextBlock != null) AlTextBlock.Text = value; } } public string RD { get { if (RDTextBlock != null) return RDTextBlock.Text; else return String.Empty; } set { if (RDTextBlock != null) RDTextBlock.Text = value; } } public ImageSource Image { get { if (cArtImage != null) return cArtImage.Source; else return null; } set { if (cArtImage != null) cArtImage.Source = value; } } public string TracksXML { get { return _TracksXML; } set { _TracksXML = value; } } public double ImageWidth { get { if (cArtImage != null) return cArtImage.Width; else return double.NaN; } set { if (cArtImage != null) cArtImage.Width = value; } } public double ImageHeight { get { if (cArtImage != null) return cArtImage.Height; else return double.NaN; } set { if (cArtImage != null) cArtImage.Height = value; } } }

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  • Good implementations of reinforced learning?

    - by Paperino
    For an ai-class project I need to implement a reinforcement learning algorithm which beats a simple game of tetris. The game is written in Java and we have the source code. I know the basics of reinforcement learning theory but was wondering if anyone in the SO community had hands on experience with this type of thing. What would your recommended readings be for an implementation of reinforced learning in a tetris game? Are there any good open source projects that accomplish similar things that would be worth checking out? Thanks in advanced Edit: The more specific the better, but general resources about the subject are welcomed. Follow up: Thought it would be nice if I posted a followup. Here's the solution (code and writeup) I ended up with for any future students :). Paper / Code

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  • WPF Pass MenuItem selected as MethodParameter to ObjectDataProvider

    - by Shravan
    I am trying to pass Selected MenuItem's Text/Header string as the MethodParameter to my ObjectDataProvider. I have seen examples like these on the internet but haven't been able to adapt it to the Menu Control specifically. I am new to WPF and need some help accomplish this. Any help would be greatly appreciated. Below is the code snippet, XAML for the ObjectDataProvider <Window.Resources> <ObjectDataProvider x:Key="NMInfo" ObjectType="{x:Type local:NMInfoProvider}" MethodName="GetDcmsInfomation" IsAsynchronous="True"> <ObjectDataProvider.MethodParameters> <x:Static Member="system:String.Empty" /> </ObjectDataProvider.MethodParameters> </ObjectDataProvider> </Window.Resources> XAML for the Menu control <Menu Name="nmMenu" Height="25" HorizontalAlignment="Stretch" VerticalAlignment="Top" FontSize="12" DockPanel.Dock="Top"> <Menu.BitmapEffect> <DropShadowBitmapEffect/> </Menu.BitmapEffect> <MenuItem Header="File"> <MenuItem Header="SNYC12P10650" IsCheckable="True" ToolTip="Production" Click="MenuItem_Clicked"> <MenuItem.IsChecked> <Binding Source="{StaticResource NMInfo}" Path="MethodParameters[0]" BindsDirectlyToSource="True" Mode="OneWayToSource"/> </MenuItem.IsChecked> </MenuItem> <MenuItem Header="GPRI12D10217" IsCheckable="True" ToolTip="QA" Click="MenuItem_Clicked"> <MenuItem.IsChecked> <Binding Source="{StaticResource NMInfo}" Path="MethodParameters[0]" BindsDirectlyToSource="True" Mode="OneWayToSource"/> </MenuItem.IsChecked> </MenuItem> <MenuItem Header="GPRI12D10219" IsCheckable="True" ToolTip="Dev" Click="MenuItem_Clicked"> <MenuItem.IsChecked> <Binding Source="{StaticResource NMInfo}" Path="MethodParameters[0]" BindsDirectlyToSource="True" Mode="OneWayToSource"/> </MenuItem.IsChecked> </MenuItem> <Separator/> <MenuItem Header="Close"/> </MenuItem> </Menu>

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  • Android: Getting Error: Conversion to Dalvik format failed

    - by Rupesh C
    I am building an app on android and running into an error and while searching on net, came across your posting on this and changed the eclipse.ini to increase Xms and Xmx params but still this error does not go away. I am using Eclipse IDE for Java with Andrioid SDK 2.1 on Mac OS. Please help or please point me to someone who might know. Btw, this error only happens when i add external jar files (which i need for my project). here are the list of external jar files that i have in my classpath.) // httpclient-4.0.1.jar from apache // httpcore -4.0.1.jarfrom apache // commons-codec-1.3.jar from apache //commons-logging-1.1.1.jar from apache // json_simple-1.1.jar from google Here is the complete error: UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: already added: Lorg/apache/commons/logging/impl/AvalonLogger; [2010-05-02 21:57:05 - MyApp]     at com.android.dx.dex.file.ClassDefsSection.add(ClassDefsSection.java:123) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.dex.file.DexFile.add(DexFile.java:143) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processClass(Main.java:301) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processFileBytes(Main.java:278) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.access$100(Main.java:56) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:229) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.cf http://com.android.dx.cf.direct.ClassPathOpener.pro .direct.ClassPathOpener.processArchive(ClassPathOpener.java:244) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:130) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:108) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processOne(Main.java:247) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processAllFiles(Main.java:183) [2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.run(Main.java:139) [2010-05-02 21:57:05 - MyApp]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [2010-05-02 21:57:05 - MyApp]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [2010-05-02 21:57:05 - MyApp]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [2010-05-02 21:57:05 - MyApp]     at java.lang.reflect.Method.invoke(Method.java:592) [2010-05-02 21:57:05 - MyApp]     at com.android.ide.eclipse.adt.internal.sdk.DexWrapper.run(Unknown Source) [2010-05-02 21:57:05 - MyApp]     at com.android.ide.eclipse.adt.internal.build.ApkBuilder.executeDx(Unknown Source) [2010-05-02 21:57:05 - MyApp]     at com.android.ide.eclipse.adt.internal.build.ApkBuilder.build(Unknown Source) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:627) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:309) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:341) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238) [2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2010-05-02 21:57:05 - MyApp] 4 errors; aborting [2010-05-02 21:57:05 - MyApp] Conversion to Dalvik format failed with error 1 Thanks, Rupesh

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  • Linq Query Help Needed

    - by Randy Minder
    Say I have the following LINQ queries: var source = from workflow in sourceWorkflowList select new { SubID = workflow.SubID, ReadTime = workflow.ReadTime, ProcessID = workflow.ProcessID, LineID = workflow.LineID }; var target = from workflow in targetWorkflowList select new { SubID = workflow.SubID, ReadTime = workflow.ReadTime, ProcessID = workflow.ProcessID, LineID = workflow.LineID }; var difference = source.Except(target); sourceWorkflowList and targetWorkflowList have the exact same column definitions. But they both contain more columns of data than what is shown in the queries above. Those are just the columns needed for this particular issue. difference contains all rows in sourceWorkflowList that are not contained in targetWorkflowList Now what I would like to do is to remove all rows from sourceWorkflowList that do not exist in difference. Could someone show me a query that would do this? Thanks very much - Randy

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  • Uses of Erlang in Telecom

    - by user94154
    I'm a web developer and a college student majoring in telecommunications. This means I'm decent at programming and I know a little about telecom networks (at a high, non-technical level). I keep reading that Erlang is used all over the telecom industry (supposedly for its performance). I'm wondering if there's anyway I can combine my programming skills with my telecommunications major with Erlang. Is most of the Erlang/telecom stuff closed source? Are there any open source telecom projects written Erlang? UPDATE: sipwiz's comment makes me think in terms of a question larger than "uses of Erlang". How can I leverage a high-level understanding of telecom networks and the telecom regulatory environment with programming. I hope this hasn't veered too off-topic for SO.

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  • GUI for Build Process

    - by sarah xia
    Hi All, I've just implemented build and deploy process which consists of java files, ant script and cmd files. In the process, a release manager will have to check out source, hit the build.cmd button and then carry a zip file over to a server. I am wondering if it is worthwhile to make a GUI for it? So that the release manager does not need to check out source manually for example? How do I start? I have quite limited knowledge of javax, but I very much like to learn. Thanks, Sarah

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  • How can a component at designtime determine the project directory

    - by Heinz Z.
    Hello, I write a component which should store some information relative to the project directory. Every time a property of my component is changed it should write a file. So how can a component determine the current project directory at design time. Thanks in advance EDIT: I want to generate a delphi source file every time a property of my component is changed, so that I always get the latest version when I compile my code. Think of it as a kind of code generator. At the moment I set whole path and filename where the source should be stored but I prefer a relative path to the project (or the form/datamodule which contains my component) to make it easier to copy the project on different developer machines.

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  • bat file using winrar taking too long to run

    - by Jessie
    hi guys, i have this scripts which extracts all my folder's and files from my c:\projects locations and put its in winrar and transfers them to c:\backup\project for /f "delims==" %%D in ('DIR C:\projects /A /B /S') do ( "C:\Program Files\WinRAR\WinRAR.EXE" m -r "c:\backup\projects.rar" "%%D" ) i have also tried the below script which uses the same source c:\projects but put them in their own separate winrar folder like in the source then transfers the folders into my c:\backup. FOR /F "DELIMS==" %%D in ('DIR C:\projects /AD /B') DO ( "C:\Program Files\WinRAR\WinRAR.EXE" m -r "C:\Backup\%%D.rar" "%%D" ) my question is, my second scripts only takes two hours to run when my first script takes over 24 hours to run, is there any way to make my first script faster? if anything shouldn't my first script be faster?

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  • convert string to float without silent NaN/Inf conversion

    - by Peter Hansen
    I'd like convert strings to floats using Python 2.6 and later, but without silently converting things like 'NaN' and 'Inf'. Before 2.6, float("NaN") would raise a ValueError. Now it returns a float for which math.isnan() returns True, which is not useful behaviour for my application. Here's what I've got at the moment: import math def get_floats(source): for text in source.split(): try: val = float(text) if math.isnan(val) or math.isinf(val): raise ValueError yield val except ValueError: pass This is a generator, which I can supply with strings containing whitespace-separated sequences representing real numbers. I'd like it to yield only those fields which are purely numeric representations of floats, as in "1.23" or "-34e6", but not for example "NaN" or "-Inf". Test case: assert list(get_floats('1.23 -34e6 NaN -Inf')) == [1.23, -34000000.0] Please suggest alternatives you consider more elegant, even if they involve "look before you leap" (which is normally considered a lesser approach in Python).

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  • accepts_nested_attributes_for and has_many :through relations.

    - by antiarchitect
    I want to make a simple examing application on RoR 2.3. The problem area is to make an exam_session in a one form with only one submit action. For the exam session there are selected some number of questions from the question pool in random order. For these questions there are selected some number of alternatives (to check is this a single answer question or multi answer question I use the number of correct alternatives: if only 1 - single, 1 - multi. Radiobuttons or checkboxes in form to answer depends on it). I have models: Questions ---< Alternative and ExamSession. I think there must be has_many :through relations between ExamSession and Questions and has_many :through relation between the intermediate table (for example QuestionsExamSession) and Alternative to point what alternatives are answers of the student on this Question. So the questions are: Is this scheme is too complicated and there is a way to do it simple and clear? Is there any way to organize models in such a way to make the form I want to work?

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  • Changing an extention method from linq-to-sql to entity framework

    - by Jova
    I'm changing my project from working with Linq-to-SQL to working with Entity Framework. I have some extention methods that extend the classes created by LINQ and I'm wondering how to change them to work with the entities instead Here's an example. public static int GetPublishedArticlesCount(this Table<Article> source) { return GetPublishedArticles(source.Context as DataContext, null).Count(); } This method gets the number of published articles. Instead of using this Table<Article>, what should I use instead?

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  • Grid View Pagination.

    - by Wondering
    Dear All, I have a grid view and I want to implement Pagination functionality.This is working fine. protected DataSet FillDataSet() { string source = "Database=GridTest;Server=Localhost;Trusted_Connection=yes"; con = new SqlConnection(source); cmd = new SqlCommand("proc_mygrid", con); ds = new DataSet(); da = new SqlDataAdapter(cmd); da.Fill(ds); GridView1.DataSource = ds; GridView1.DataBind(); return ds; } protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) { int newPagenumber = e.NewPageIndex; GridView1.PageIndex = newPagenumber; GridView1.DataSource = FillDataSet(); GridView1.DataBind(); } But the problem is for each pagination I have to call FillDataSet(); Is there any way to stop that.Any other coding approach? Thanks.

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  • Force File Reload Before Build

    - by Byron Ross
    We have a tool that generates some code (.cs) files that are used to build the project. The tool is run during the pre-build step, but the files are updated in the solution only after the build, which means the build needs to be performed twice to clear the errors after a change to the input. Example: Modify Tool Input File Run Build Tool Runs and changes source file Build Fails Run Build Tool Runs and changes source file (but it doesn's actually change, because the input remains the same) Build Succeeds Any ideas how we can do away with the double build, and still let our tool be run from VS? Thanks guys!

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  • iPhone: Grouped Table Confusion

    - by senfo
    I'm trying to follow along with this UITableView tutorial and I'm afraid I'm getting confused. What I hope to accomplish is to create a grouped table, which resembles the look and feel of the following image (image source): For each "break" in the table, I assume that I need another section. I understand there is a global NSMutableArray, which acts as the data source to the UITableView. Inside this global array, there are dictionaries for sections and for data, but this is where I start getting confused. Should I create a unique table to store each section in addition to a new table for the rows that are part of that section? In other words, if I have five sections, will I end up with ten unique collections of data (one for each section and one to store the rows related to the section), which all eventually get stored in the global array?

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  • Light-weight client/server DB?

    - by OverTheRainbow
    Hello, (This question falls between programming and finding a tool, so I guess I'll ask here in SO since it has more activity than SuperUser.) I like the simplicity of SQLite, but by design, it doesn't support concurrent access. The apps I write don't have heavy needs, so I'd like to avoid heavier solutions like MySQL that are more difficult to deploy (remote customers with usually no computer personnel). Does someone know of a good solution that would offer the following features? Client available for VB.Net applications The server itself doesn't have to be a .Net application. Actually, I'd rather a bare-metal server so that it can run even on embedded Linux hosts with less RAM/CPU than regular PC's Easy install: the client part should either be statically linked inside the client application or be available as a single DLL, and the server should just be a single EXE listening for queries, à la Fossil (http://www.fossil-scm.org) clients can locate the server on the LAN by broadcasting data picked up by the server, so users don't have to write down the IP address and paste it into each client open-source, or moderately priced closed-source Thank you.

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  • How change the videos max of page with jQuery ?

    - by Shady
    I have one website here that contains videos to see, like youtube, and the videos are divided in pages, and in the source of this page I got this part of the source: <input type="hidden" value="12" id="vid_count"> <input type="hidden" value="422" id="vid_max"> <input type="hidden" value="12" id="vids_per_page"> The site contains 422 videos with 36 pages, 12 videos per page I need to show all videos in only one page... I've already tried document.getElementById("vids_per_page").setAttribute("value", "500"); but this doesn't work... How can I do it? (via greasemonkey) any additional info?

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  • Change My.Settings ConnectionString in runtime?

    - by Sultanen
    I have a ClickOnce deployment where i have a INI-settings file on the network file with "global" settings that is supposed to affect the program on all client computers. The problem i have is that i whant to have the Database connectionString stored in this INI file and have it read and stored in the My.Settings ConnectionString at program startup. How do i do this? The ConnectionString setting is Application scoped and therefore Read-Only, if i try to set it by My.Settings("ConnectionString") = "Source=server;Initial Catalog=database;Integrated Security=True" I get a runtime error: An error occurred creating the form. See Exception.InnerException for details. The error is: The type initializer for 'DB_lib.DB_LINQ' threw an exception. [EDIT] I got rid of the error by using the My.Settings("ConnectionString") = "Source=server;Initial Catalog=database;Integrated Security=True" in another place then the the eventtriggerd settingsLoaded method i created.. The problem is that even though the connectionstring semes to be the right, the program still connects to the "default" database that is typed in to the app.config file??

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  • Strategy in exporting to Excel with formatting from ASP.NET?

    - by Jiho Han
    So this is another exporting to Excel question. I have a page that has a table with formatting by stylesheet. When I export the page by setting the ContentType to application/excel and Content-Disposition to attachment, I can export the table to Excel (not CSV). However, it loses all formatting. I think it's because Excel does not load CSS and I guess that's reasonable. So, in a scenario where I have to show the table on the web and also export to Excel, both with similar (even if not exact) formatting, what would be the best approach without using something like NPOI? I am trying to minimize the work and keep the single template if possible. Is it necessary for me to create two separate templates: one with stylesheet, the other with embedded style in the table itself for Excel? Having a single template with conditional formatting inside would be very messy. Any ideas?

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