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  • How created method with signature as List

    - by London
    Hi all, I'm very new to Java programming language so this is probably dumb question but I have to ask it because I can't figure it out on my own. Here is the deal. I want to create method which extracts certain object type from a list. So the method should receive List as argument, meaning list should contain either Object1 or Object2. I've tried like this : public Object1 extractObject(List<?>){ //some pseudo-code ... loop trough list and check if list item is instance of object one return that instance } The problem with declaring method with List<?> as method argument is that I receive compilation error from eclipse Syntax error on token ">", VariableDeclaratorId expected after this token. How do I set the method signature properly to accept object types either Object1 or Object2 ? Thank you

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  • c# - Object reference not set to an instance of an object.

    - by tom
    Line 30: sUsername.Trim(); Line 31: sPassword.Trim(); Line 32: string ConnectionString = WebConfigurationManager.ConnectionStrings["dbnameConnectionString"].ConnectionString; Line 33: SqlConnection myConnection = new SqlConnection(ConnectionString); Line 34: try Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Any ideas? I don't understand the error.

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  • sort array with special characters in php

    - by Enkay
    I have an array I'm trying to asort using php. The problem is that the array has accented characters in it and needs to be sorted using "french" rules. cote < côte < coté < côté I've tried many things, like using php collators, but I get the following error : PHP Fatal error: Class 'Collator' not found I've also tried to set locale but it didn't do anything so I'm not sure I was doing it right, or if I need to isntall the locale. I'm a little confused. I'm using PHP 5.2.4 if that helps. If I use asort without anything, it puts all the words with accented characters at the end. Thanks.

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  • XAML Namespace http://schemas.microsoft.com/winfx/2006/xaml is not resolved

    - by Justin Poliey
    I'm using Visual Studio 2010 Express, working on a Silverlight 4 project in C#. This started happening all of a sudden in my project, I get the error that this XAML Namespace is not resolved: XAML Namespace http://schemas.microsoft.com/winfx/2006/xaml is not resolved If it helps, here is the section of the XAML file in which the error is being raised: <ResourceDictionary xmlns:my="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Toolkit" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:GetGlue="clr-namespace:GetGluePlugin;assembly=GetGluePlugin" xmlns:System="clr-namespace:System;assembly=mscorlib" xmlns:utils="clr-namespace:Seesmic.Sdp.Utils;assembly=Seesmic.Sdp.Utils"> What could the problem be?

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  • How do I include extremely long literals in C++ source?

    - by BillyONeal
    Hello everyone :) I've got a bit of a problem. Essentially, I need to store a large list of whitelisted entries inside my program, and I'd like to include such a list directly -- I don't want to have to distribute other libraries and such, and I don't want to embed the strings into a Win32 resource, for a bunch of reasons I don't want to go into right now. I simply included my big whitelist in my .cpp file, and was presented with this error: 1>ServicesWhitelist.cpp(2807): fatal error C1091: compiler limit: string exceeds 65535 bytes in length The string itself is about twice this allowed limit by VC++. What's the best way to include such a large literal in a program?

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  • FieldError when annotating over foreign keys

    - by X_9
    I have a models file that looks similar to the following: class WithDate(models.Model): adddedDate = models.DateTimeField(auto_now_add=True) modifiedDate = models.DateTimeField(auto_now=True) class Meta: abstract = True class Match(WithDate): ... class Notify(WithDate): matchId = models.ForeignKey(Match) headline = models.CharField(null=True, blank=True, max_length=10) For each Match I'm trying to get a count of notify records that have a headline. So my call looks like matchObjs = Match.objects.annotate(notifies_made=Count('notify__headline__isnull')) This keeps throwing a FieldError. I've simplified the query down to matchObjs = Match.objects.annotate(notifies_made=Count('notify')) And I still get the same FieldError... I've seen this work in other cases (other documentation, other SO questions like this one) but I can't figure out why I'm getting an error. The specific error that is returned is as follows: Cannot resolve keyword 'notify' into field. Choices are: (all fields from Match model) Does anyone have a clue as to why I can't get this annotation to work across tables? I'm baffled after looking at the other SO question and various Django docs where I've seen this done. Edit: I am using Django 1.1.1

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  • Expression Encoder - Limitations for file Dimension - min size of 64 * 64 and must be a multiple of

    - by PortageMonkey
    I receive error messages when attempting to encode files in Expression Encoder when the file width or height is not a multiple of four, or is smaller than 64. I have been able to find very little in the documentation / web searches on this, and nothing that explains what settings may cause / alleviate these limitations. I assume it has something to do with the underlying data type. Error Message: Invalid Width Specified. The value must be an integer between 64 - and 4096 and be a multiple of 4. Can anyone provide further details on why / what settings can be manipulated to change this behavior: I.E. quality, compression etc.

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  • Generics in custom configuration sections

    - by Jonn
    I tried making a custom configuration class that went on like this: WatcherServiceInfoSection<TWatcherServiceDetailElement> where TWatcherServiceDetailElement is a ConfigurationElement inside it. Now when I call the type in the ConfigSections area of AppConfig I get the error: An error occurred creating the configuration section handler for WatcherServiceInfo: Could not load type 'Library.Common.Utilities.ConfigurationHandler.WatcherServiceInfoSection<ASNDPService.Configuration.WatcherServiceDetailElement>' from assembly Is what I'm doing possible? Can I have generic types in the type attribute for a custom section element? EDIT Additionally, how about ConfigurationElementCollection objects? Like in the above example, how could I do a [ConfigurationProperty("WatcherServiceDetails", IsRequired = true, IsDefaultCollection = true)] [ConfigurationCollection(typeof(TWatcherServiceDetailElement), AddItemName = "WatcherServiceDetail")] public WatcherServiceDetailCollection<TWatcherServiceDetailElement> WatcherServiceDetails I'm aware that type parameters aren't allowed for attributes and that's what I want to know how to do.

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  • Referring to a non-final variable data inside an inner class

    - by shoaibmohammed
    Im doing a program in GWT. Here is the snippet where Im having problem private String[] populateRSSData() { 1==>> String[] data = null; try { new RequestBuilder(RequestBuilder.GET, "../database.php?action=populaterss").sendRequest(null, new RequestCallback() { @Override public void onResponseReceived(Request request, Response response) { 2==>> data=response.getText().split("~"); } @Override public void onError(Request request, Throwable exception) { Window.alert(exception.getMessage()); } }); } catch (RequestException e) { Window.alert(e.getMessage()); } return data; } Now the problem arises that I get an error that the variable 1==>> data should be declared final. But if I declare it as final then i cannot store the datas in 2==>> The error i get Cannot refer to a non-final variable data inside an inner class defined in a different method RSS_Manager.java Please suggest

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  • ASP.NET MVC NullReferenceException when inheriting from a Base Controller

    - by rockinthesixstring
    I've got a base controller that I inherit all of my Controllers from. It's job is to basically set caching and error handling as well as check for mobile browsers. My UI works fine, but my Unit Tests are failing. Imports System.Web.Mvc <HandleError()> _ <CompressFilter()> _ <OutputCache(Duration:=30, VaryByParam:="id")> _ Public Class BaseController : Inherits System.Web.Mvc.Controller Protected Overrides Function View(ByVal viewName As String, ByVal masterName As String, ByVal model As Object) As System.Web.Mvc.ViewResult Dim ismobile As Nullable(Of Boolean) = Request.Browser.IsMobileDevice If ismobile Then Return MyBase.View(viewName, "Mobile", model) Else Return MyBase.View(viewName, "Site", model) End If End Function End Class The error I'm getting in my Unit test is on Dim ismobile As Nullable(Of Boolean) = Request.Browser.IsMobileDevice saying Object Reference Not Set To An Instance Of An Object.

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  • Where is this backward_warning.h #warning coming from?

    - by Piku
    Without looking through every single source file in my XCode project, is there a way to find out which #include is triggering the following warning? #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <iostream> instead of the deprecated header <iostream.h>. To disable this warning use -Wno-deprecated. Clicking on the error in XCode just opens the backward_warning.h file, which is totally useless. I know what the warning means, I know how to fix it (when I see the file in question and can look at its #includes)... but I just don't know how to find the file causing the error!

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  • $where in mongodb web shell not working

    - by Bravo
    i have the below set of test documents which i inserted in to the mongodb and when i use to query the db using the $where get the below exception Error: database error: $where query, but no script engine Any idea why the $where clause not working test data : db.things.save({ "_id" : 1, "domainName" : "test11.com", "hosting" : "hostgator.com" }) db.things.save({ "_id" : 2, "domainName" : "test2.com", "hosting" : "aws.amazon.com"}) db.things.save({ "_id" : 3, "domainName" : "test3.com", "hosting" : "aws.amazon.com" }) db.things.save({ "_id" : 4, "domainName" : "test4.com", "hosting" : "hostgator.com" }) db.things.save({ "_id" : 5, "domainName" : "test5.com", "hosting" : "aws.amazon.com" }) db.things.save({ "_id" : 6, "domainName" : "test6.com", "hosting" : "cloud.google.com" }) db.things.save({ "_id" : 7, "domainName" : "test7.com", "hosting" : "aws.amazon.com" }) db.things.save({ "_id" : 8, "domainName" : "test8.com", "hosting" : "hostgator.com" }) db.things.save({ "_id" : 9, "domainName" : "test9.com", "hosting" : "cloud.google.com" }) db.things.save({ "_id" : 10, "domainName" : "test10.com", "hosting" : "godaddy.com" }) query used : db.things.find( { $where: "this.domainName == 'test11.com'" } );

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  • Flex: How can I use the @ContextRoot in a Button or LinkButton

    - by Dave Meurer
    I'm trying to create a button that will simply link back to the context root. I noticed flex has a @ContextRoot attribute that appears to work only in certain cases. For example, if I try to use it in the following mxml: <mx:Button label="Back to Root" click="navigateToURL(new URLRequest(@ContextRoot()), '_parent')"/> I get the following error: Error: Attributes are not callable. I can't seem to find this technique explained anywhere, is there another way? Thanks for the help! Dave

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  • How do I delete the 32k errored document?

    - by Ramkumar
    I am having some documents. If I try to open the document then it shows error like "field is too large 32k or view's column & selection formulas are too large" Whenever I try to delete the document, I am getting the same error. I am not able to delete. Okay we can try to get the document via backend, But there, I can not get the document handle. Whatever I try to search then the document collection count is 0. Important:- I am using Notes 6.5.2. Thanks in Advance,

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  • Detect when mouse leaves my app

    - by user593747
    Hello I am creating an app in win32 that will display the x, y position(In screen coords) of the mouse whereever the mouse is (inside my app client/NC area & outside). I am at the stage where I want to detect when the mouse leaves my application completely. I have written a simple win32 app that should detect & notify myself when the mouse leaves my app, BUT its not working, I never receive the messages WM_MOUSELEAVE & WM_NCMOUSELEAVE. What do you think is wrong? Am I using the wrong win32 functions? // Track Mouse.cpp : Defines the entry point for the application. // #include "stdafx.h" #include <windows.h> #include <vector> #include <string> #include <cstdlib> static HINSTANCE gInstance; // Globals // enum MouseStatus { DEFAULT = 50001, LEFT_CLIENT, LEFT_NCLIENT }; static MouseStatus mouseState = DEFAULT; static COLORREF bkCol = RGB(0,255,255); // Functions List // BOOL TrackMouse( HWND hwnd ) { // Post: TRACKMOUSEEVENT mouseEvt; ZeroMemory( &mouseEvt, sizeof(TRACKMOUSEEVENT) ); mouseEvt.cbSize = sizeof(TRACKMOUSEEVENT); mouseEvt.dwFlags = TME_LEAVE | TME_NONCLIENT; //mouseEvt.dwHoverTime = HOVER_DEFAULT; mouseEvt.hwndTrack = hwnd; return TrackMouseEvent( &mouseEvt ); } LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch(msg) { case WM_CREATE: { // Track mouse so I can be notified when it leaves my application (Client & NC areas) BOOL trackSuccess = TrackMouse( hwnd ); // Returns successful, so I correctly track the mouse if ( trackSuccess == 0 ) { MessageBoxW( hwnd, L"Failed to track mouse", L"Error", MB_OK|MB_ICONEXCLAMATION ); } else MessageBoxW( hwnd, L"Tracking mouse", L"Success", MB_OK|MB_ICONEXCLAMATION ); } break; case WM_MOUSELEAVE: { // I never receive this message // Detect when the mouse leaves the client area mouseState = LEFT_CLIENT; bkCol = RGB(50,50,50); InvalidateRect( hwnd, NULL, true ); } break; case WM_NCMOUSELEAVE : { // I never receive this message // If the mouse has left the client area & then leaves the NC area then I know // that the mouse has left my app if ( mouseState == LEFT_CLIENT ) { mouseState = LEFT_NCLIENT; BOOL trackSuccess = TrackMouse( hwnd ); if ( trackSuccess == 0 ) { bkCol = RGB(255,255,0); MessageBoxW( hwnd, L"On WM_NCMOUSELEAVE: Failed to track mouse", L"Error", MB_OK|MB_ICONEXCLAMATION ); } else MessageBoxW( hwnd, L"On WM_NCMOUSELEAVE: Tracking mouse", L"Success", MB_OK|MB_ICONEXCLAMATION ); InvalidateRect( hwnd, NULL, true ); } } break; case WM_ACTIVATE: case WM_MOUSEHOVER: { // The mouse is back in my app mouseState = DEFAULT; bkCol = RGB(0,255,255); InvalidateRect( hwnd, NULL, true ); } break; case WM_PAINT: { HDC hdc; PAINTSTRUCT ps; hdc = BeginPaint( hwnd, &ps ); SetBkColor( hdc, bkCol ); Rectangle( hdc, 10, 10, 200, 200 ); EndPaint( hwnd, &ps ); } break; case WM_CLOSE: DestroyWindow(hwnd); break; case WM_DESTROY: PostQuitMessage(0); break; default: break; } return DefWindowProc(hwnd, msg, wParam, lParam); } int WINAPI WinMain(HINSTANCE gInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { WNDCLASSEX wc; HWND hwnd; MSG Msg; wc.cbSize = sizeof(WNDCLASSEX); wc.style = 0; wc.lpfnWndProc = WndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = gInstance; wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = (HBRUSH)(DKGRAY_BRUSH); wc.lpszMenuName = NULL; wc.lpszClassName = L"Custom Class"; wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION); // if registration of main class fails if(!RegisterClassEx(&wc)) { MessageBoxW(NULL, L"Window Registration Failed!", L"Error!", MB_ICONEXCLAMATION | MB_OK); return 0; } hwnd = CreateWindowEx( WS_EX_CLIENTEDGE, L"Custom Class", L"App Name", WS_CAPTION|WS_MINIMIZEBOX|WS_VISIBLE|WS_OVERLAPPED|WS_SYSMENU, CW_USEDEFAULT, CW_USEDEFAULT, 600, 500, NULL, NULL, gInstance, NULL); if(hwnd == NULL) { MessageBoxW(NULL, L"Window Creation Failed!", L"Error!", MB_ICONEXCLAMATION | MB_OK); return 0; } ShowWindow(hwnd, nCmdShow); UpdateWindow(hwnd); while(GetMessage(&Msg, NULL, 0, 0) > 0) { TranslateMessage(&Msg); DispatchMessage(&Msg); } return Msg.wParam; }

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  • Operator() as a subscript (C++)

    - by Ivan Gromov
    I use operator() as a subscript operator this way: double CVector::operator() (int i) const { if (i >= 0 && i < this->size) return this->data[i]; else return 0; } double& CVector::operator() (int i) { return (this->data[i]); } It works when I get values, but I get an error when I try to write assign a value using a(i) = 1; UPD: Error text: Unhandled exception at 0x651cf54a (msvcr100d.dll) in CG.exe: 0xC0000005: Access violation reading location 0xccccccc0.

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  • Rails: Converting from MySQL to PostGres breaks Geokit Distance Calculations???

    - by Kevin
    I recently switched my database from MySQL to PostGres. I also use GeoKit. When I started my app up with the new database already seeded, I get the following error: PGError: ERROR: function radians(character varying) does not exist LINE 1: ...COS(0.661045389762993)*COS(-2.12957994527573)*COS(RADIANS(ti... ^ HINT: No function matches the given name and argument types. You might need to add explicit type casts. Anyone know why this is breaking now? I know GeoKit still works because it's still performing the geocoding in the model per ticket when the database is seeded, it just won't do the distance calculations correctly.

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  • Something wrong with this gtk# class for a window?

    - by Isaiah
    Learning C#, I feel so guilty for loving it. I'm a microsoft hater. Anyways I'm trying out gtk# and just trying out some simple stuff. I've made a class for the main window and MonoDevelop is complaining about this code, which I swear was just fine a second ago. public class mwin{ protected Window win = new Window("test program--"); public mwin(){ //Configure the parts win.SetDefaultSize(300,500); } public void showWin(){ win.ShowAll(); } } win.SetDefaultSize(300,500); }--<(here it says "} expected") But obviously I have a closing brace! Am I missing something? [edit] here's whole code. The color stuff was some stuff I was playing around with to color the window, but I didn't finish because the error started. I'm sure it's not the color stuff because it still has an error when I comment them out. http://codepaste.net/b2mwys

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  • JDBC ResultSet.getString Before/After Start/End of ResultSet Exception

    - by Geowil
    I have done a lot of searching about this topic through Google but I have yet to find someone using getString() in the way that I am using it so I have not been able to fix this issue in the normal ways that are suggested. What I am trying to do is to obtain all of the information from the database and then use it to populate a table model within the program. I do so by obtaining the data with getString and place it into a String[] object: try { while (rSet.next()) { String row[] = {rSet.getString("DonorName"),rSet.getString("DonorCharity"),((String)rSet.getString("DonationAmount"))}; model.addRow(row); } } However I am always getting a dialog error message stating those error messages in the title: Exception: Before start of result set Exception: After end of result set The data is still added and everything works correctly but it is just annoying to have to dismiss those message windows. Does anyone have some suggestions?

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  • Why MSSQL keeps throwing me Exceptions?

    - by Augusto Càzares
    I have my project in .NET that uses a db in MSSQL Server,i'm using LINQ , sometimes when the projec throws me an exception (Constraint) in a part of the project this same error keeps showing in other part of the project when i do another thing with the db, like when i do an insertion and i had before an exception on delete the insertion throws me the delete exeption, and it remainds this way until i close and open again the project, my major problem is when this happen in my online project, this error in my project causes me problems in the project i'm testing online (i use the same db). I don't know if this exception is on the memory or something but its have been causing me a lot of headechs.

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  • http://localhost/ not working on Windows 7. What's the problem?

    - by AXheladini
    I have a big problem opening http://localhost/ on Windows 7 (beta). I installed this os and everything went great; when I installed Wamp I saw that localhost is not working at all. I just see this error: Failed to Connect Firefox can't establish a connection to the server at localhost. in Mozilla and Explorer. I removed Wamp and after some weeks (that means two weeks from today) I installed NetBeans on Windows 7. I created a test PHP script and when I debug it, I get the same error again. I tried to access it with ip 127.... but still the same. What is the problem? When i installed NetBeans I installed it in port 8080.

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  • How do you use printf from Assembly?

    - by bobobobo
    I have an MSVC++ project set up to compile and run assembly code. In main.c: #include <stdio.h> void go() ; int main() { go() ; // call the asm routine } In go.asm: .586 .model flat, c .code go PROC invoke puts,"hi" RET go ENDP end But when I compile and run, I get an error in go.asm: error A2006: undefined symbol : puts How do I define the symbols in <stdio.h> for the .asm files in the project?

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  • The server response was: mail server permanently rejected message (#5.3.0)

    - by kredok32
    Hello , I send email on GoDaddy site ( from my .NET application): mail.From = new MailAddress("[email protected]"); mail.To.Add(emailadmin); mail.Subject = "Subj"; mail.IsBodyHtml = true; mail.Body = Body; ... smtp.Host = "relay-hosting.secureserver.net"; smtp.Port = 25; smtp.EnableSsl = false; smtp.Send(mail); but I have received the error : The server response was: mail server permanently rejected message (#5.3.0) else I have tried this code : smtp.Host = "relay-hosting.secureserver.net"; smtp.Credentials = new NetworkCredential("[email protected]", "password"); smtp.Port = 25; smtp.EnableSsl = false; but get same error. Please advice.

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  • Simple question C#.net about if else statement

    - by ilkdrl
    Iam doing a simple website and when i press button, i should see weight in label.. i see but if text.maxlenght 6, i should see ERROR message in same label but repeat see weight in label. How can i solve this problem? protected void Button1_Click(object sender, EventArgs e) { double sayi1, sayi2, sayi3, hesap, sonuc; sayi1 = Convert.ToDouble(Tb1.Text); sayi2 = Convert.ToDouble(Tb2.Text); sayi3 = Convert.ToDouble(Tb3.Text); if (Tb1.MaxLength > 6 || Tb2.MaxLength > 6) { lbl1.Text = "ERROR."; } else { hesap = (((sayi1 - ((sayi1 - sayi2) / 2)) * ((sayi1 - sayi2) / 2)) / 40); sonuc = (hesap * sayi3) / 100; lbl1.Text = sonuc.ToString() + "kg"; } }

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  • How do I integrate WordPress blogs with my Grails application?

    - by Amit Jain
    I had my static site with which WordPress blogs were integrated. Now I have made a Grails application with which I want to integrate those WordPress blogs. I had put the WordPress folder copied from my previous site to the web-app folder of my Grails application. But I am not able to access the WordPress folder, as when I hit URL - http://localhost:8080/myApplicaiton/wordpress/, it shows this error: Error 500: java.net.SocketTimeoutException: Read timed out Also, in my urlMappings.groovy one of the mappings I need is "/$generalPageURL"(controller:'myConroller', action:'myAction') And if I put in the above mapping, all requests for WordPress goes to myAction of myController. Is there any way out to still reach the WordPress folder defined inside web-app folder with the above mapping?

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