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  • UIAlertView -show causing a memory leak

    - by Erik
    I'm relatively new to iPhone Development, so this may be my fault, but it goes against what I've seen. :) I think that I'm creating a UIAlertView that lives just in this vaccuum of the 'if' statement. NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; if(!data) { // Add an alert UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Unable to contact server" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil]; NSLog(@"retain count before show: %i", alert.retainCount); [alert show]; NSLog(@"retain count before release: %i", alert.retainCount); [alert release]; NSLog(@"retain count after release: %i", alert.retainCount); return nil; } However, the console logs baffle me. retain count before show: 1 retain count before release: 6 retain count after release: 5 I've tried also adding: alert = nil; after the release. That makes the retain count 0, but I still show a leak. And if it helps, the leak's Responsible Frame is UIKeyboardInputManagerClassForInputMode. I'm also using OS 4 Beta 3. So anyone have any ideas how a local UIAlertView's retain count would increment itself by 5 when calling -show? Thanks for your help!

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  • How do I use DomainContext.Load in my ViewModel?

    - by kristian
    I'm trying to use RIA services to provide data to my Silverlight application by calling DomainContext.Load to retrieve a collection of widgets. I want to expose this collection through a property of the ViewModel so I can bind a control to the collection in my page. I think my approach must be fundamentally wrong because Load is called asynchronously and is therefore not available when my page loads and the control tried to bind. Can someone please show me the right way to do this? My Silverlight page has the following XAML: <navigation:Page x:Class="Demo.UI.Pages.WidgetPage" // the usual xmlns stuff here... xmlns:local="clr-namespace:Demo.UI.Pages" mc:Ignorable="d" xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation" d:DataContext="{d:DesignInstance Type=local:WidgetPageModel, IsDesignTimeCreatable=False}" d:DesignWidth="640" d:DesignHeight="480" Title="Widget Page"> <Canvas x:Name="LayoutRoot"> <ListBox ItemsSource="{Binding RedWidgets}" Width="150" Height="500" /> </Canvas> </navigation:Page> My ViewModel looks like this: public class WidgetPageModel { private WidgetDomainContext WidgetContext { get; set; } public WidgetPageModel() { this.WidgetContext = new WidgetDomainContext(); WidgetContext.Load(WidgetContext.GetAllWidgetsQuery(), false); } public IEnumerable<Widget> RedWidgets { get { return this.WidgetContext.Widgets.Where(w => w.Colour == "Red"); } } }

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  • How to Customize JAXB Marshalling if generating JAXB beans from XML

    - by Charles O.
    Hello, I want to customize the marshalling of dates in JAXB. It's a variant of this already asked question. I would think I would use an XMLAdapter, as this answer questions specifies. But I can't do that exactly, because I'm going the other way around, generating the JAXB beans from an .XSD -- I can't add annotations to the JAXB beans because they are generated code. I've tried calling Marshaller.setAdapter(), but with no luck. final Marshaller marshaller = getJaxbContext().createMarshaller(); marshaller.setSchema(kniSchema); marshaller.setAdapter(new DateAdapter()); ... private static class DateAdapter extends XmlAdapter<String, XMLGregorianCalendar> { @Override public String marshal(XMLGregorianCalendar v) throws Exception { return "hello"; //Just a test to see if it's working } @Override public XMLGregorianCalendar unmarshal(String v) throws Exception { return null; // Don't care about this for now } } Where the relevant part of my generated JAXB bean looks like this: @XmlSchemaType(name = "date") protected XMLGregorianCalendar activeSince; When I do this, what the default date/XMLGregorianCalendar marshalling happens. It's as if I didn't do it all. Any help is appreciated. Thanks, Charles

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  • jquery WebService responseXML / responseText

    - by Kevin
    I get an empty response back from this local WebService call via jquery / ajax. I have verified the URL and XML input string by invoking the call in a browser. I DO get XML code back as expected. What am I missing? Could it have something to do with the return type "XmlDocument"? I have tried changing out text/xml to text. No affect. Tried a GET instead of POST. Webservice (running locally)... _ Public Function GetXML(ByVal strXML As String) As XmlDocument... Dim retXML As XmlDocument = New XmlDocument() ...CODE.... Return retXML Calling Function: # GetStat() { var Url = 'http://localhost/myService.asmx?op=GetXML'; var msg = ' 55 POPE myUser myPwd '; $.ajax({ url: Url, type: "POST", dataType: "text/xml", data: msg, complete: processResult, contentType: "text/xml" }); return false; } function processResult(xmlData, status) { var jData = $(xmlData); } # Thanks!

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  • Max Value of a Multiway Tree in OCaml

    - by Trigork
    I'm an IT Student and kind of a newbie to OCaml Recently, studying for an exam I found this exercise. Given: type 'a tree = Tree of 'a * 'a tree list Define a function mtree : 'a tree -'a, that returns the greatest value of all the nodes in a multiway tree, following the usual order relation in OCaml (<=) I've come to do something like this below, which, of course, is not working. let rec mtree (Tree (r, sub)) = let max_node (Tree(a, l1)) (Tree(b, l2)) = if a >= b then (Tree(a, l1)) else (Tree(b, l2)) in List.fold_left max_node r sub;; After reading an answer to this I'm posting the fixed code. let rec mtree (Tree(r,sub)) = let max_node (Tree(a, l1)) (Tree(b, l2)) = if a >= b then a else b in List.fold_left (max_node) r (List.map mtree sub);; The idea is the same, fold the list comparing the nodes making use of my local function to do so and travel through the tree by calling the function itself over the nodes lists of the consecutive levels. Is still not working, though. Now complains about max_node in the fold_left part. Error: This expression has type 'a tree -> 'a tree -> 'a but an expression was expected of type 'a tree -> 'a tree -> 'a tree And here I'm definitely lost because I can't see why does it expects to return an 'a tree

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  • Preloading multiple comboboxes/listbox itemssource with enumerated values using WCF RIA Services

    - by Dale Halliwell
    I would like to be able to load several RIA entitysets in a single call without chaining/nesting several small LoadOperations together so that they load sequentially. I have several pages that have a number of comboboxes on them. These comboboxes are populated with static values from a database (for example status values). Right now I preload these values in my VM by one method that strings together a series of LoadOperations for each type that I want to load. For example: public void LoadEnums() { context.Load(context.GetMyStatusValues1Query()).Completed += (s, e) => { this.StatusValues1 = context.StatusValues1; context.Load(context.GetMyStatusValues2()).Completed += (s1, e1) => { this.StatusValues2 = context.StatusValues2; context.Load(context.GetMyStatusValues3Query()).Completed += (s2, e2) => { this.StatusValues3 = context.StatusValues3; (....and so on) }; }; }; }; While this works fine, it seems a bit nasty. Also, I would like to know when the last loadoperation completes so that I can load whatever entity I want to work on after this, so that these enumerated values resolve properly in form elements like comboboxes and listboxes. (I think) I can't do this easily above without creating a delegate and calling that on the completion of the last loadoperation. So my question is: does anyone out there know a better pattern to use, ideally where I can load all my static entitysets in a single LoadOperation?

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  • Call OpenFileDialog Silverlight from JavaScript

    - by PeterEysermans
    I'm trying to call a function in a Silverlight 4 component to open a file dialog and upload a file to the server. Everything works well within Silverlight but I'd like to call the component from JavaScript. So I call the button click handler from a C#-function which is [ScriptableMember]. I get the following error when calling the function: System.Security.SecurityException: Dialogs must be user-initiated. at System.Windows.Browser.ManagedObjectInfo.Invoke(ManagedObject obj, InvokeType invokeType, String memberName, ScriptParam[] args) at System.Windows.Hosting.ManagedHost.InvokeScriptableMember(IntPtr pHandle, Int32 nMemberID, Int32 nInvokeType, Int32 nArgCount, ScriptParam[] pArgs, ScriptParam& pResult, ExceptionInfo& pExcepInfo) I based my code on the tutorial by Tim Heuer that can be found here: http://www.silverlight.net/learn/videos/silverlight-videos/openfiledialog-and-file-upload/ I understand why the error is thrown, sort of, the 'click' from the user is done in JavaScript and probably is not going through to Silverlight. For Silverlight this is merely a function call. Is this new policy from Silverlight 4? Is it still possible to only use Silverlight behind to screens to upload a file? Any help is appreciated.

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  • Html Select List: why would onchange be called twice?

    - by Mark Redman
    I have a page with a select list (ASP.NET MVC Page) The select list and onchange event specified like this: <%=Html.DropDownList("CompanyID", Model.CompanySelectList, "(select company)", new { @class = "data-entry-field", @onchange = "companySelectListChanged()" })%> The companySelectListChanged function is getting called twice? I am using the nifty code in this question to get the caller. both times the caller is the onchange event, however if i look at the callers caller using: arguments.callee.caller.caller the first call returns some system code as the caller (i presume) and the second call returns undefined. I am checking for undefined to only react once to onchange, but this doesnt seem ideal, whcy would onchange be called twice? UPDATE: ok, found the culprit! ...apart from me :-) but the issue of calling the companySelectListChanged function twice still stands. The onchange event is set directly on the select as mentioned. This calls the companySelectListChanged function. ..notice the 'data-entry-field' class, now in a separate linked javascript file a change event on all fields with this class is bound to a function that changes the colour of the save button. This means there is two events on the onchange, but the companySelectListChanged is called twice? The additional binding is set as follows: $('.data-entry-field').bind('keypress keyup change', function (e) { highLightSaveButtons(); }); Assuming its possible to have 2 change events on the select list, its would assume that setting keypress & keyup events may be breaking something? Any ideas?

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  • Slimbox 2 Plugin, jQuery Flickr, and IE8

    - by Nick H.
    Hello, I am currently developing a site that I make use of two jQuery plugins: Flickr jquery plugin (http://code.google.com/p/jquery-flickr/) Slimbox (http://code.google.com/p/slimbox/) The first plugin is used to pull in flickr photos from a specific account. These photos are displayed as thumbnails on the page. I am then using the second plugin to display larger views of these images. Because the flickr photos are fetched when the page loads, I am calling the Slimbox 2 function like this: $(document).ready(function() { $("#Flickr").flickr(); //Call Flickr plugin $(window).bind('load', function() { $("#Flickr a").slimbox();//Call Slimbox2 }); }); On first testing this seemed to have worked perfectly. I tested multiple versions of FireFox, IE7, IE6, and Safari. Everything is great. However, the Slimbox lightbox effest does not work in IE8. However, if I put IE8 into compatibility mode, everything works as expected. I would like to avoid forcing compatibility mode. There are no javascript errors and I am at a loss for testing. Here is a link to a sample: http://www.njhall.com/JRMcCourt-Builders/index.html#ourwork Any advice would be greatly appreciated. Thanks Nick

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  • Apple Push Notification-Unable to callback didRegisterForRemoteNotificationsWithDeviceToken

    - by Shailesh Kanzariya
    I have been simply trying to get deviceToken from my iPhone application using Apple Push Notification Service. I don't have any implementation on server side for the time being. I have created APP Id, got SSL certificate, Provision Profile with APN and calling - (void)applicationDidFinishLaunching:(UIApplication *)application { //view init and add sub view to window [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound]; } method. When I execute the application it pop ups action box to allow Push Notification (means my request for APN registration is working) but my callback is not executed. Neither didRegisterForRemoteNotificationsWithDeviceToken nor didFailToRegisterForRemoteNotificationsWithError is called? can anybody help me to resolve the issue? Following are my callbacs for reference. - (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err { UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:@"APNClient" message:@"Entered into Error Method" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [myAlert show]; [myAlert release]; NSLog(@"Error in registration. Error: %@", err); } - (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)devToken { UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:@"APNClient" message:@"Got the deviceToken..!" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [myAlert show]; [myAlert release]; }

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  • How to call a .NET Webservice from Android using KSOAP2?

    - by Rajapandian
    Hai to All,I have a problem while calling the webservice,i have a .NET web service in the server and i am using KSOAP2(ksoap2-j2se-full-2.1.2) in android.While running the program i got an runtime Exception like "org.ksoap2.serialization.SoapPrimitive". I dont know what to do.Here is my code. package projects.ksoap2sample; import org.ksoap2.SoapEnvelope; import org.ksoap2.serialization.SoapObject; import org.ksoap2.serialization.SoapSerializationEnvelope; import org.ksoap2.transport.HttpTransportSE; import android.app.*; import android.os.*; import android.widget.TextView; public class ksoap2sample extends Activity { /** Called when the activity is first created. */ private static final String SOAP_ACTION = "http://tempuri.org/HelloWorld"; private static final String METHOD_NAME = "HelloWorld"; private static final String NAMESPACE = "http://tempuri.org/"; private static final String URL = "http://192.168.1.19/TestWeb/WebService.asmx"; TextView tv; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); tv=(TextView)findViewById(R.id.text1); try { SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); //request.addProperty("prop1", "myprop"); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet=true; envelope.setOutputSoapObject(request); HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); androidHttpTransport.call(SOAP_ACTION, envelope); Object result = (Object)envelope.getResponse(); String[] results = (String[]) result; tv.setText( ""+results[0]); } catch (Exception e) { tv.setText(e.getMessage()); } } } May be my code is wrong.please help me. Regards Rajapandian

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  • Security error accessing Service outside of FlexBuilder

    - by MikeHoss
    I'm very new to Flex and I have what I think it a head-scratcher. I am building a little Flash app that will consume some web services over HTTP. When I am in Flexbuilder and run my app there, it works fine. When I goto to my FlexBuilder project on my OS and double-click on it, it works fine. When I zip up my bin-debug file, I get this error: Security error accessing url faultCode:Channel.Security.Error faultString: 'Security error accessing url' faultDetail:'Destination: DefaultHTTP' So I googled that and got information on about the crossdomain.xml file. Well, I can't put a crossdomain file in the service I am calling, but I can put one somewhere else. So I put the following lines in Flex app: Security.allowDomain("vx1391"); Security.loadPolicyFile("http://vx1391:8080/job/Remote%20FIT%20Runner/ws/trunk/flash-cross-domain.xml"); My cross-domain.xml file is wide-open: &lt;cross-domain-policy&gt; &lt;allow-access-from domain="*"/&gt; </cross-domain-policy> Which I know is bad in a prod enivironment, but right now I just need to get this working locally but outside of FlexBuilder. Anyone want to help out this Flex-noob?

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  • Segmentation fault on MPI, runs properly on OpenMP

    - by Bellman
    Hi, I am trying to run a program on a computer cluster. The structure of the program is the following: PROGRAM something ... CALL subroutine1(...) ... END PROGRAM SUBROUTINE subroutine1(...) ... DO i=1,n CALL subroutine2(...) ENDDO ... END SUBROUTINE SUBROUTINE subroutine2(...) ... CALL subroutine3(...) CALL subroutine4(...) ... END SUBROUTINE The idea is to parallelize the loop that calls subroutine2. Main program basically only makes the call to subroutine1 and only its arguments are declared. I use two alternatives. On the one hand, I write OpenMP clauses arround the loop. On the other hand, I add an IF conditional branch arround the call and I use MPI to share the results. In the OpenMP case, I add CALL KMP_SET_STACKSIZE(402653184) at the beginning of the main program and I can run it with 8 threads on an 8 core machine. When I run it (on the same 8 core machine) with MPI (either using 8 or 1 processors) it crashes just when makes the call to subroutine3 with a segmentation fault (signal 11) error. If I comment subroutine4, then it doesn't crash (notice that it crashed just when calling subroutine3 and it works when commenting subroutine4). I compile with mpif90 using MPICH2 libraries and the following flags: -O3 -fpscomp logicals -openmp -threads -m64 -xS. The machine has EM64T architecture and I use a Debian Linux distribution. I set ulimit -s hard before running the program. Any ideas on what is going on? Has it something to do with stack size? Thanks in advance

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  • ASP Classic page quit working

    - by justSteve
    I've had a set of legacy pages running on my IIS7 server for at least a year. Sometime last week something changed and now this line: Response.Write CStr(myRS(0).name) & "=" & Cstr(myRS(0).value) which used to return nothing more exciting than the string: 'Updated=true' (the sproc processing input params, stores them to a table, checks for errors and when that's all done returns a success code by executing this statement: select 'true' as [Updated] Now my pageside error handler is being involved and offers: myError=Error from /logQuizScore.asp Error source: Microsoft VBScript runtime error Error number: 13 Error description: Type mismatch Important to note that all lots of pages use the same framework - same db, same coding format, connecitonstrings and (so far as I can tell) all others are working. Troubleshot to this point: The call to the stored procedure is working correctly (stuff is stored to the given table). The output from the stored procedure is working correctly (i can execute a direct call with the given parameters and stuff works. I can see profiler calling and passing. I can replace all code with 'select 'true' as updated' and the error is the same. everything up to the response.write statement above is correct. So something changed how ADO renders that particular recordset. So i try: Response.Write myRS.Item.count and get: Error number: 424 Error description: Object required The recordset object seems not to be instantiating but the command object _did execute. Repeat - lots of other pages just the same basic logic to hit other sprocs without a problem. full code snippet set cmd1 = Server.CreateObject("ADODB.Command") cmd1.ActiveConnection = MM_cnCompliance4_STRING cmd1.CommandText = "dbo._usp_UserAnswers_INSERT" ... cmd1.CommandType = 4 cmd1.CommandTimeout = 0 cmd1.Prepared = true set myRS = cmd1.Execute Response.Write CStr(myRS(0).name) & "=" & Cstr(myRS(0).value)

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  • Problem with boost::find_format_all, boost::regex_finder and custom regex formatter (bug boost 1.42)

    - by Nikko
    I have a code that has been working for almost 4 years (since boost 1.33) and today I went from boost 1.36 to boost 1.42 and now I have a problem. I'm calling a custom formatter on a string to format parts of the string that match a REGEX. For instance, a string like: "abc;def:" will be changed to "abc\2Cdef\3B" if the REGEX contains "([;:])" boost::find_format_all( mystring, boost::regex_finder( REGEX ), custom_formatter() ); The custom formatter looks like this: struct custom_formatter() { template< typename T > std::string operator()( const T & s ) const { std::string matchStr = s.match_results().str(1); // perform substitutions return matchStr; } } This worked fine but with boost 1.42 I know have "non initialized" s.match_results() which yield to boost::exception_detail::clone_implINS0_::error_info_injectorISt11logic_errorEEEE - Attempt to access an uninitialzed boost::match_results< class. This means that sometimes I am in the functor to format a string but there is no match. Am I doing something wrong? Or is it normal to enter the functor when there is no match and I should check against something? for now my solution is to try{}catch(){} the exception and everything works fine, but somehow that doesn't feel very good. EDIT1 Actually I have a new empty match at the end of each string to parse. EDIT2 : one solution inspired by ablaeul template< typename T > std::string operator()( const T & s ) const { if( s.begin() == s.end() ) return std::string(); std::string matchStr = s.match_results().str(1); // perform substitutions return matchStr; } *EDIT3 Seems to be a bug in (at least) boost 1.42 *

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  • How to call SQL Function with multiple parameters from C# web page

    - by Marshall
    I have an MS SQL function that is called with the following syntax: SELECT Field1, COUNT(*) AS RecordCount FROM GetDecileTable('WHERE ClientID = 7 AND LocationName = ''Default'' ', 10) The first parameter passes a specific WHERE clause that is used by the function for one of the internal queries. When I call this function in the front-end C# page, I need to send parameter values for the individual fields inside of the WHERE clause (in this example, both the ClientID & LocationName fields) The current C# code looks like this: String SQLText = "SELECT Field1, COUNT(*) AS RecordCount FROM GetDecileTable('WHERE ClientID = @ClientID AND LocationName = @LocationName ',10)"; SqlCommand Cmd = new SqlCommand(SQLText, SqlConnection); Cmd.Parameters.Add("@ClientID", SqlDbType.Int).Value = 7; // Insert real ClientID Cmd.Parameters.Add("@LocationName", SqlDbType.NVarChar(20)).Value = "Default"; // Real code uses Location Name from user input SqlDataReader reader = Cmd.ExecuteReader(); When I do this, I get the following code from SQL profiler: exec sp_executesql N'SELECT Field1, COUNT(*) as RecordCount FROM GetDecileTable (''WHERE ClientID = @ClientID AND LocationName = @LocationName '',10)', N'@ClientID int,@LocationID nvarchar(20)', @ClientID=7,@LocationName=N'Default' When this executes, SQL throws an error that it cannot parse past the first mention of @ClientID stating that the Scalar Variable @ClientID must be defined. If I modify the code to declare the variables first (see below), then I receive an error at the second mention of @ClientID that the variable already exists. exec sp_executesql N'DECLARE @ClientID int; DECLARE @LocationName nvarchar(20); SELECT Field1, COUNT(*) as RecordCount FROM GetDecileTable (''WHERE ClientID = @ClientID AND LocationName = @LocationName '',10)', N'@ClientID int,@LocationName nvarchar(20)', @ClientID=7,@LocationName=N'Default' I know that this method of adding parameters and calling SQL code from C# works well when I am selecting data from tables, but I am not sure how to embed parameters inside of the ' quote marks for the embedded WHERE clause being passed to the function. Any ideas?

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  • Using JBoss EL with Websphere

    - by rat
    Hey, I'm doing a project which is going to run on Websphere. I'm using JSF/Facelets/Richfaces for this project. I want to use the JBoss EL implementation as it allows calling methods with parameters from EL etc. ... usually this is accomplished by getting the JBoss EL jar and then putting this in the web.xml: <context-param> <param-name>com.sun.faces.expressionFactory</param-name> <param-value>org.jboss.el.ExpressionFactoryImpl</param-value> </context-param> However this isn't working ... I don't know if its a problem with Websphere or ...??? I get a stack trace when going to the page saying it can't parse the EL where I have passed a method a parameter: <a4j:commandLink value="Delete" action="#{mcsaAdmin.deleteLanguage(1234)}" /> Looking at the stacktrace it appears to still be using the standard sun EL: Caused by: javax.el.ELException: Error Parsing: #{mcsaAdmin.deleteLanguage(1234)} at com.sun.el.lang.ExpressionBuilder.createNodeInternal(Unknown Source) at com.sun.el.lang.ExpressionBuilder.build(Unknown Source) at com.sun.el.lang.ExpressionBuilder.createMethodExpression(Unknown Source) at com.sun.el.ExpressionFactoryImpl.createMethodExpression(Unknown Source) at com.sun.facelets.tag.TagAttribute.getMethodExpression(TagAttribute.java:141) Note the 'com.sun.el.ExpressionFactoryImpl' instead of 'org.jboss.el.ExpressionFactoryImpl' as specified above ... Am I doing something obviously wrong? Anyone have any ideas... I'm using standard JSF implementation from majorra project or whatever provided on sun website and richfaces 3.1.4 and facelets 1.1.14.

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  • Store comparison in variable (or execute comparison when it's given as an string)

    - by BorrajaX
    Hello everyone. I'd like to know if the super-powerful python allows to store a comparison in a variable or, if not, if it's possible calling/executing a comparison when given as an string ("==" or "!=") I want to allow the users of my program the chance of giving a comparison in an string. For instance, let's say I have a list of... "products" and the user wants to select the products whose manufacturer is "foo". He could would input something like: Product.manufacturer == "foo" and if the user wants the products whose manufacturer is not "bar" he would input Product.manufacturer != "bar" If the user inputs that line as an string, I create a tree with an structure like: != / \ manufacturer bar I'd like to allow that comparison to run properly, but I don't know how to make it happen if != is an string. The "manufacturer" field is a property, so I can properly get it from the Product class and store it (as a property) in the leaf, and well... "bar" is just an string. I'd like to know if I can something similar to what I do with "manufacturer": storing it with a 'callable" (kind of) thing: the property with the comparator: != I have tried with "eval" and it may work, but the comparisons are going to be actually used to query a MySQL database (using sqlalchemy) and I'm a bit concerned about the security of that... Any idea will be deeply appreciated. Thank you! PS: The idea of all this is being able to generate a sqlalchemy query, so if the user inputs the string: Product.manufacturer != "foo" || Product.manufacturer != "bar" ... my tree thing can generate the following: sqlalchemy.or_(Product.manufacturer !="foo", Product.manufacturer !="bar") Since sqlalchemy.or_ is callable, I can also store it in one of the leaves... I only see a problem with the "!="

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  • NETCF - Optimized Repaint (onPaint)

    - by Nullstr1ng
    Hi Guys, I want to ask for suggestions on how to optimize a repaint in Compact Framework? GetHashCode() didn't help because it always return a different hash code. Anyway, I have a program which you can drag and resize an object in run time. This object is a transparent object and it has a PNG image which also dynamically resize relative to object client size. Though I noticed, (e.g. I have 4 transparent object and I'm dragging or resizing one) all 4 of them triggers OnPaintBackground even if the 3 are not moving. Another one when am just tapping on the one object .. it sill triggers onPaintBacground(). Anyway, I don't have a problem when this events get triggered. What I like to do is optimization and that means I only have to repaint the object when it's necessary. Can you guys please give a suggestions? here's my pseudo C# code Bitmap _backBuff; onResize() { if(_backBuff != null) _backBuff.Dispose(); _backBuff = new Bitmap(ClientSize.Width, ClientSize.Height); Invalidate(); } onPaintBackground(e) /*have to use onPaintBackground because MSDN said it's faster*/ { using(Graphics g = Graphics.FromImage(_backBuff)) { g.Clear(Color.Black); // draw background ....some interface calling here ....and paint the background // draw alpha PNG .. get hDc .. paint PNG .. release hDc } e.Graphics.DrawImage(_backBuff,0,0); } Thanks in advance.

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  • What are the reasons to use dos batch programs in Windows?

    - by DVK
    Question What would be a good (ideally, technical) reason to ever program some non-trivial task in dos batch language on a modern Windows system as opposed to downloading either PowerShell, or ActiveState Perl? To be more specific, I make the following two assumptions for the duration of this question: anyone technical enough to be able to write a medium-complexity batch script is technical enough to install either of the scripting interpreters. Neither of those two present enough of a learning curve for basic batch replacement tasks that said curve would outweigh the pain of doing any remotely-non-trivial task in batch. Notes "You need a batch program for autoexec.bat" is not a valid reason. Your autoexec.bat may consist of simply calling non-batch script. If you disagree with either of my 2 assumptions above, that's fine, and I may be wrong. But my question is specifically "assuming those 2 assumptions are correct, what would be the reason to still stick with batch?" If it makes it easier to suspend disbelief (in case you disagree with me), add in a 3rd assumption that the question is limited to people who already posess at least some modicum of PowerShell or Perl experience. To re-iterate - this is not meant to be a subjective question about how easy it is to learn PSh or ASPerl compared to doing advanced batch coding. That is a separate question that is too subjective to be bothered with in this post. Background: I used to do some fairly complicated batch programming back in the elder days, and remember batch as one of the worst possble programming languages I had encountered. The idea for this question came after seeing a bunch of batch questions on SO, and trying to grok the answer of one of them out of sheer curiosity and giving up in pain after a minute, exclaiming mentally "why would anyone go through this pain instead of doing that in 1 line of Perl?" :) My own plausible answer I assume there may be an an likely DOS-compatible system, which has DOS interpreter but has no compatible PowerShell or Perl... I'm not aware of one but not completely impossible.

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  • Set UIViewController background to transparent

    - by dbonneville
    I'm calling a UIViewController from a button on the main view. I have set the alpha of the view to 50%. When the view animates in, I can see that it's transparent. As soon as the animation stops, it becomes opaque. In the xib, when I set opacity, it's sets the opacity over white. So if I set the color to black and the opacity to 50%, this is what I see when I click the button on the main interface to show the view: view slides up from bottom at 50% opacity. I can see the underlaying view through the transparent black nicely. when view stops animating, it become gray. it appears that a white color pops in the background of the view somehow, making the 50% opacity black over white turn gray. I can no longer see the underlaying layer. What I'm trying to do: show 100% white text on a 50% transparent black layer which sits over the view that called this view. How on earth do I do this? I tried a code method that sets the background color when the view is called, but it does exactly the same thing (with another try in there commented out with the same effect): - (IBAction)gotoCreed { Creed *creed = [[Creed alloc] initWithNibName:nil bundle:nil]; [self presentModalViewController:creed animated:YES]; self.view.backgroundColor = [UIColor colorWithHue:0.0 saturation:0.0 brightness:1.0 alpha:0.2]; //self.view.backgroundColor = [UIColor clearColor]; }

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  • Lucene.net create+lock errors in ASP.NET

    - by acidzombie24
    I have an issue with Lucene.net. It throws a lock exception. After poking around i notice these things. My code below works in an app bit when calling in Application_Start i get a NoSuchDirectoryException. Not closing the writer (as my code doesnt do below) i WILL get a LockObtainFailedException with the message Lock obtain timed out: SimpleFSLock@<FULL_PATH> from either app or asp.net These thread hinted when spawning threads they get less permissions then i do (but! my main thread has problems as well...) and one solution is to impersonate IIS. I am using visual studios 2010. I am not sure how full blown it is but my attempt to impersonate it failed. So my question is how do i have lucene create the directory and not throw an exception if dont close the writer for some reason (such as power going out)? http://stackoverflow.com/questions/2341163/why-is-my-lucene-index-getting-locked/2499285#2499285 http://stackoverflow.com/questions/1123517/lucene-net-and-i-o-threading-issue/1123981#1123981 static IndexWriter writer = null; static void lucene_init() { bool create = false; string dirname = "LuceneIndex_z"; if (System.IO.Directory.Exists(dirname) == false) create = true; var directory = FSDirectory.GetDirectory(dirname); var analyzer = new StandardAnalyzer(); writer = new IndexWriter(directory, analyzer, create); }

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  • Lucene.net create+lock errors in ASP.NET

    - by acidzombie24
    I have an issue with Lucene.net. It throws a lock exception. After poking around i notice these things. My code below works in an app bit when calling in Application_Start i get a NoSuchDirectoryException. Not closing the writer (as my code doesnt do below) i WILL get a LockObtainFailedException with the message Lock obtain timed out: SimpleFSLock@<FULL_PATH> from either app or asp.net These thread hinted when spawning threads they get less permissions then i do (but! my main thread has problems as well...) and one solution is to impersonate IIS. I am using visual studios 2010. I am not sure how full blown it is but my attempt to impersonate it failed. So my question is how do i have lucene create the directory and not throw an exception if dont close the writer for some reason (such as power going out)? http://stackoverflow.com/questions/2341163/why-is-my-lucene-index-getting-locked/2499285#2499285 http://stackoverflow.com/questions/1123517/lucene-net-and-i-o-threading-issue/1123981#1123981 static IndexWriter writer = null; static void lucene_init() { bool create = false; //I now use a full path. I still get NoSuchDirectoryException //string dirname = "LuceneIndex_z"; if (System.IO.Directory.Exists(dirname) == false) create = true; var directory = FSDirectory.GetDirectory(dirname); var analyzer = new StandardAnalyzer(); writer = new IndexWriter(directory, analyzer, create); }

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  • C++/CLI managed thread cleanup

    - by Guillermo Prandi
    Hi. I'm writing a managed C++/CLI library wrapper for the MySQL embedded server. The mysql C library requires me to call mysql_thread_init() for every thread that will be using it, and mysql_thread_end() for each thread that exits after using it. Debugging any given VB.Net project I can see at least seven threads; I suppose my library will see only one thread if VB doesn't explicitly create worker threads itself (any confirmations on that?). However, I need clients to my library to be able to create worker threads if they need to, so my library must be thread-aware to some degree. The first option I could think of is to expose some "EnterThread()" and "LeaveThread()" methods in my class, so the client code will explicitly call them at the beginning and before exiting their DoWork() method. This should work if (1) .Net doesn't "magically" create threads the user isn't aware of and (2) the user is careful enough to have the methods called in a try/finally structure of some sort. However, I don't like it very much to have the user handle things manually like that, and I wonder if I could give her a hand on that matter. In a pure Win32 C/C++ DLL I do have the DllMain DLL_THREAD_ATTACH and DLL_THREAD_DETACH pseudo-events, and I could use them for calling mysql_thread_init() and mysql_thread_end() as needed, but there seem to be no such thing in C++/CLI managed code. At the expense of some performance (not much, I think) I can use TLS for detecting the "usage from a new thread" case, but I can imagine no mechanism for the thread exiting case. So, my questions are: (1) could .net create application threads without the user being aware of them? and (2) is there any mechanism I could use similar to DLL_THREAD_ATTACH / DLL_THREAD_DETACH from managed C++/CLI? Thanks in advance.

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  • How do I get a PHP class constructor to call its parent's parent's constructor

    - by Paulo
    I need to have a class constructor in PHP call its parent's parent's (grandparent?) constructor without calling the parent constructor. // main class that everything inherits class Grandpa { public function __construct() { } } class Papa extends Grandpa { public function __construct() { // call Grandpa's constructor parent::__construct(); } } class Kiddo extends Papa { public function __construct() { // THIS IS WHERE I NEED TO CALL GRANDPA'S // CONSTRUCTOR AND NOT PAPA'S } } I know this is a bizarre thing to do and I'm attempting to find a means that doesn't smell bad but nonetheless, I'm curious if it's possible. EDIT I thought I should post the rationale for the chosen answer. The reason being; it most elegant solutionto the problem of wanting to call the "grandparent's" constructor while retaining all the values. It's certainly not the best approach nor is it OOP friendly, but that's not what the question was asking. For anyone coming across this question at a later date - Please find another solution. I was able to find a much better approach that didn't wreak havoc on the class structure. So should you.

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