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• Speed up compilation with mockito on Android

  - by pbreault

  I am currently developing an android app in eclipse using: One project for the app One project for the tests (Instrumentation and Pojo tests) In the test project, I am importing the mockito library for standard POJO testing. However, when I import the library, the compilation time skyrockets from 1 second to about 30 seconds in eclipse. The cause seems to be that the whole library is converted each time. So basically, each time a make a modification that I want to test, I have to wait 30 seconds. The only workarounds that I have found so far would be: Disable "Build Automatically" Create a project that includes only pojo tests and put mockito only there. Use another library that compiles faster (e.g. easymock) Any other suggestion?

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• How do i refactor this code by using Action<t> or Func<t> delegates

  - by user330612

  I have a sample program, which needs to execute 3 methods in a particular order. And after executing each method, should do error handling. Now i did this in a normal fashion, w/o using delegates like this. class Program { public static void Main() { MyTest(); } private static bool MyTest() { bool result = true; int m = 2; int temp = 0; try { temp = Function1(m); } catch (Exception e) { Console.WriteLine("Caught exception for function1" + e.Message); result = false; } try { Function2(temp); } catch (Exception e) { Console.WriteLine("Caught exception for function2" + e.Message); result = false; } try { Function3(temp); } catch (Exception e) { Console.WriteLine("Caught exception for function3" + e.Message); result = false; } return result; } public static int Function1(int x) { Console.WriteLine("Sum is calculated"); return x + x; } public static int Function2(int x) { Console.WriteLine("Difference is calculated "); return (x - x); } public static int Function3(int x) { return x * x; } } As you can see, this code looks ugly w/ so many try catch loops, which are all doing the same thing...so i decided that i can use delegates to refactor this code so that Try Catch can be all shoved into one method so that it looks neat. I was looking at some examples online and couldnt figure our if i shud use Action or Func delegates for this. Both look similar but im unable to get a clear idea how to implement this. Any help is gr8ly appreciated. I'm using .NET 4.0, so im allowed to use anonymous methods n lambda expressions also for this Thanks

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• What would you like to correct and/or improve in this java implementation of Chain Of Responsibility

  - by Maciek Kreft

  package design.pattern.behavioral; import design.pattern.behavioral.ChainOfResponsibility.*; public class ChainOfResponsibility { public static class Chain { private Request[] requests = null; private Handler[] handlers = null; public Chain(Handler[] handlers, Request[] requests){ this.handlers = handlers; this.requests = requests; } public void start() { for(Request r : requests) for (Handler h : handlers) if(h.handle(r)) break; } } public static class Request { private int value; public Request setValue(int value){ this.value = value; return this; } public int getValue() { return value; } } public static class Handler<T1> { private Lambda<T1> lambda = null; private Lambda<T1> command = null; public Handler(Lambda<T1> condition, Lambda<T1> command) { this.lambda = condition; this.command = command; } public boolean handle(T1 request) { if (lambda.lambda(request)) command.lambda(request); return lambda.lambda(request); } } public static abstract class Lambda<T1>{ public abstract Boolean lambda(T1 request); } } class TestChainOfResponsibility { public static void main(String[] args) { new TestChainOfResponsibility().test(); } private void test() { new Chain(new Handler[]{ // chain of responsibility new Handler<Request>( new Lambda<Request>(){ // command public Boolean lambda(Request condition) { return condition.getValue() >= 600; } }, new Lambda<Request>(){ public Boolean lambda(Request command) { System.out.println("You are rich: " + command.getValue() + " (id: " + command.hashCode() + ")"); return true; } } ), new Handler<Request>( new Lambda<Request>(){ public Boolean lambda(Request condition) { return condition.getValue() >= 100; } }, new Lambda<Request>(){ public Boolean lambda(Request command) { System.out.println("You are poor: " + command.getValue() + " (id: " + command.hashCode() + ")"); return true; } } ), }, new Request[]{ new Request().setValue(600), // chaining method new Request().setValue(100), } ).start(); } }

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• Help with storing/accessing user access roles C# Winforms

  - by user222453

  Hello, firstly I would like to thank you in advance for any assistance provided. I am new to software development and have designed several Client/Server applications over the last 12 months or so, I am currently working on a project that involves a user logging in to gain access to the application and I am looking at the most efficient and "simple" method of storing the users permissions once logged in to the application which can be used throughout restricting access to certain tabs on the main form. I have created a static class called "User" detailed below: static class User { public static int _userID; public static string _moduleName; public static string _userName; public static object[] UserData(object[] _dataRow) { _userID = (int)_dataRow[0]; _userName = (string)_dataRow[1]; _moduleName = (string)_dataRow[2]; return _moduleName; } } When the user logs in and they have been authenticated, I wish to store the _moduleName objects in memory so I can control which tabs on the main form tab control they can access, for example; if the user has been assigned the following roles in the database: "Sales Ledger", "Purchase Ledger" they can only see the relevant tabs on the form, by way of using a Switch - Case block once the login form is hidden and the main form is instantiated. I can store the userID and userName variables in the main form once it loads by means of say for example: Here we process the login data from the user: DataAccess _dal = new DataAccess(); switch (_dal.ValidateLogin(txtUserName.Text, txtPassword.Text)) { case DataAccess.ValidationCode.ConnectionFailed: MessageBox.Show("Database Server Connection Failed!"); break; case DataAccess.ValidationCode .LoginFailed: MessageBox.Show("Login Failed!"); _dal.RecordLogin(out errMsg, txtUserName.Text, workstationID, false); break; case DataAccess.ValidationCode .LoginSucceeded: frmMain frmMain = new frmMain(); _dal.GetUserPrivList(out errMsg,2); //< here I access my DB and get the user permissions based on the current login. frmMain.Show(); this.Hide(); break; default: break; } private void frmMain_Load(object sender, EventArgs e) { int UserID = User._userID; } That works fine, however the _modules object contains mutiple permissions/roles depending on what has been set in the database, how can I store the multiple values and access them via a Switch-Case block? Thank you again in advance.

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• Java - Interfaces

  - by Paul

  Why interfaces cannot be declared as static ?

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• C#.Net Calling a C++ DLL

  - by hayer

  Hi I got a DLL(without the sourcecode) which exports like this: ?ReceiveCoreDataPtr@@YAXPAX@Z ?xenoAddRigidBodyAngularImpulse@@YAXHMMM@Z ?xenoAddRigidBodyForce@@YAXHMMM@Z ?xenoAddRigidBodyForce@@YAXHMMMMMM@Z ?xenoAddRigidBodyLinearImpulse@@YAXHMMM@Z ?xenoAddRigidBodyPointImpulse@@YAXHMMMMMM@Z ?xenoAddRigidBodyTorque@@YAXHMMM@Z ?xenoCharacterControllerCrouch@@YAXH@Z ?xenoCharacterControllerJump@@YAXH@Z ?xenoCharacterDisable@@YAXH@Z ?xenoCharacterEnable@@YAXH@Z ?xenoDeleteRigidBody@@YAXH@Z ?xenoEnd@@YAXXZ ?xenoGetCameraFOV@@YAKH@Z ?xenoGetCameraPointX@@YAKH@Z ?xenoGetCameraPointY@@YAKH@Z ?xenoGetCameraPointZ@@YAKH@Z ?xenoGetCameraPositionX@@YAKH@Z ?xenoGetCameraPositionY@@YAKH@Z ?xenoGetCameraPositionZ@@YAKH@Z ?xenoGetCharacterControllerHeadPosition@@YAKH@Z ?xenoGetCharacterControllerPositionX@@YAKH@Z ?xenoGetCharacterControllerPositionY@@YAKH@Z ?xenoGetCharacterControllerPositionZ@@YAKH@Z ?xenoGetCharacterControllerRotation@@YAKH@Z ?xenoGetRigidBodyAllowedPenetrationDepth@@YAKH@Z ?xenoGetRigidBodyAngularDamping@@YAKH@Z ?xenoGetRigidBodyAngularVelocityX@@YAKH@Z ?xenoGetRigidBodyAngularVelocityY@@YAKH@Z ?xenoGetRigidBodyAngularVelocityZ@@YAKH@Z ?xenoGetRigidBodyFriction@@YAKH@Z ?xenoGetRigidBodyGravityFactor@@YAKH@Z ?xenoGetRigidBodyLinearDamping@@YAKH@Z ?xenoGetRigidBodyLinearVelocityX@@YAKH@Z ?xenoGetRigidBodyLinearVelocityY@@YAKH@Z ?xenoGetRigidBodyLinearVelocityZ@@YAKH@Z ?xenoGetRigidBodyMass@@YAKH@Z ?xenoGetRigidBodyMaxAngularVelocity@@YAKH@Z ?xenoGetRigidBodyMaxLinearVelocity@@YAKH@Z ?xenoGetRigidBodyPointVelocityX@@YAKHMMM@Z ?xenoGetRigidBodyPointVelocityY@@YAKHMMM@Z ?xenoGetRigidBodyPointVelocityZ@@YAKHMMM@Z ?xenoGetRigidBodyRestitution@@YAKH@Z ?xenoIsRigidBodyALadder@@YAHH@Z ?xenoMakeCamera@@YAXHH@Z ?xenoMakeCharacterController@@YAXHMM@Z ?xenoMakeCharacterController@@YAXHMMM@Z ?xenoMakeCharacterController@@YAXHMMMM@Z ?xenoMakeCharacterController@@YAXHMMMMM@Z ?xenoMakeCharacterController@@YAXHMMMMMM@Z ?xenoMakeCharacterController@@YAXHMMMMMMM@Z ?xenoMakeRigidBodyDynamicBox@@YAXH@Z ?xenoMakeRigidBodyDynamicBox@@YAXHM@Z ?xenoMakeRigidBodyDynamicCapsule@@YAXH@Z ?xenoMakeRigidBodyDynamicCapsule@@YAXHM@Z ?xenoMakeRigidBodyDynamicCylinder@@YAXH@Z ?xenoMakeRigidBodyDynamicCylinder@@YAXHM@Z ?xenoMakeRigidBodyDynamicSphere@@YAXH@Z ?xenoMakeRigidBodyDynamicSphere@@YAXHM@Z ?xenoMakeRigidBodyStaticBox@@YAXH@Z ?xenoMakeRigidBodyStaticCapsule@@YAXH@Z ?xenoMakeRigidBodyStaticCylinder@@YAXH@Z ?xenoMakeRigidBodyStaticSphere@@YAXH@Z ?xenoMakeRigidBodyStaticTriangleMesh@@YAXH@Z ?xenoMakeVehicle@@YAXHH@Z ?xenoMoveCharacterControllerBackward@@YAXH@Z ?xenoMoveCharacterControllerForward@@YAXH@Z ?xenoMoveCharacterControllerLeft@@YAXH@Z ?xenoMoveCharacterControllerRight@@YAXH@Z ?xenoSetCharacterControllerPosition@@YAXHMMM@Z ?xenoSetCharacterControllerRotation@@YAXHM@Z ?xenoSetGravity@@YAXM@Z ?xenoSetGravity@@YAXMMM@Z ?xenoSetRigidBodyAllowedPenetrationDepth@@YAXHM@Z ?xenoSetRigidBodyAngularDamping@@YAXHM@Z ?xenoSetRigidBodyAngularVelocity@@YAXHMMM@Z ?xenoSetRigidBodyAsLadder@@YAXHH@Z ?xenoSetRigidBodyFriction@@YAXHM@Z ?xenoSetRigidBodyGravityFactor@@YAXHM@Z ?xenoSetRigidBodyLinearDamping@@YAXHM@Z ?xenoSetRigidBodyLinearVelocity@@YAXHMMM@Z ?xenoSetRigidBodyMass@@YAXHM@Z ?xenoSetRigidBodyMaxAngularVelocity@@YAXHM@Z ?xenoSetRigidBodyMaxLinearVelocity@@YAXHM@Z ?xenoSetRigidBodyPosition@@YAXHMMM@Z ?xenoSetRigidBodyRestitution@@YAXHM@Z ?xenoSetRigidBodyRotation@@YAXHMMM@Z ?xenoSetTimeStep@@YAXM@Z ?xenoStart@@YAXH@Z ?xenoStart@@YAXHM@Z ?xenoStart@@YAXHMH@Z ?xenoStart@@YAXXZ ?xenoUpdate@@YAXXZ ?xenoVehicleAccelerate@@YAXHM@Z ?xenoVehicleHandbrake@@YAXH@Z ?xenoVehicleReverse@@YAXH@Z ?xenoVehicleTurn@@YAXHM@Z When I try to use it in another C++ App like this #include <windows.h> class XenoPhysics { private: typedef void (*FunctionFunc)(void); typedef void (*FunctionFuncFloat)(float); typedef void (*FunctionFuncInt)(int); typedef void (*FunctionIntFloatFloatFloat)(int,float,float,float); HMODULE libInstance; public: void LoadLib() { this->libInstance = LoadLibrary(L"F:\\xenophysics.dll"); } void UnloadLib() { FreeLibrary(libInstance); } void xStart() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(this->libInstance, "?xenoStart@@YAXXZ"); curFunc(); } void xEnd() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "xenoEnd"); curFunc(); } void xUpdate() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "xenoUpdate"); curFunc(); } void xMakeRigidBodyStaticBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "xenoMakeRigidBodyStaticBox"); curFunc(objid); } void xMakeRigidBodyDynamicBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "xenoMakeRigidBodyDynamicBox"); curFunc(objid); } void xSetRigidBodyPosition(int objid, float x, float y, float z) { FunctionIntFloatFloatFloat curFunc; curFunc = (FunctionIntFloatFloatFloat)GetProcAddress(libInstance, "xenoSetRigidBodyPosition"); curFunc(objid, x, y, z); } void xSetGravity(float grav) { FunctionFuncFloat curFunc; curFunc = (FunctionFuncFloat)GetProcAddress(libInstance, "xenoSetGravity"); curFunc(grav); } }; This is the "wrapper"(or whatever you would call it) class.. To call the functions I'm doing XenoPhysics * d = new XenoPhysics(); d->LoadLib(); d->xStart(); It then throws the following error at me(Note that it passes the LoadLib() without any errors) Unhandled exception at 0x50261bc9 in Xeno Test.exe: 0xC0000005: Access violation reading location 0x00000064. And yes; I've checked that the "curFunc" gets the address, not just a NULL pointer(atleast I think I've checked that).. Anyone who can help out? Edit: Forgot the C#.Net code, how stupid of me :3 Here is the C++ CLR DLL "wrapper" I tried to make: #include <windows.h> // The following ifdef block is the standard way of creating macros which make exporting // from a DLL simpler. All files within this DLL are compiled with the XENOWRAPPERWIN32_EXPORTS // symbol defined on the command line. this symbol should not be defined on any project // that uses this DLL. This way any other project whose source files include this file see // XENOWRAPPERWIN32_API functions as being imported from a DLL, whereas this DLL sees symbols // defined with this macro as being exported. #ifdef XENOWRAPPERWIN32_EXPORTS #define XENOWRAPPERWIN32_API __declspec(dllexport) #else #define XENOWRAPPERWIN32_API __declspec(dllimport) #endif typedef void (*FunctionFunc)(); typedef void (*FunctionFuncFloat)(float); typedef void (*FunctionFuncInt)(int); typedef void (*FunctionIntFloatFloatFloat)(int,float,float,float); // This class is exported from the xeno wrapper win32.dll class XENOWRAPPERWIN32_API Cxenowrapperwin32 { public: Cxenowrapperwin32(void); HINSTANCE libInstance; // FunctionFunc curFunc; // Library base functions void LoadLib() { libInstance = LoadLibrary(L"F:\\xenophysics.dll"); } void UnloadLib() { FreeLibrary(libInstance); } // Function calls to the xeno physics void xStart() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoStart@@YAXXZ"); curFunc(); } void xEnd() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoEnd@@YAXXZ"); curFunc(); } void xUpdate() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoUpdate@@YAXXZ"); curFunc(); } void xMakeRigidBodyStaticBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "?xenoMakeRigidBodyStaticBox@@YAXH@Z"); curFunc(objid); } void xMakeRigidBodyDynamicBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "?xenoMakeRigidBodyDynamicBox@@YAXH@Z"); curFunc(objid); } void xSetRigidBodyPosition(int objid, float x, float y, float z) { FunctionIntFloatFloatFloat curFunc; curFunc = (FunctionIntFloatFloatFloat)GetProcAddress(libInstance, "?xenoSetRigidBodyPosition@@YAXHMMM@Z"); curFunc(objid, x, y, z); } void xSetGravity(float grav) { FunctionFuncFloat curFunc; curFunc = (FunctionFuncFloat)GetProcAddress(libInstance, "?xenoSetGravity@@YAXM@Z"); curFunc(grav); } }; extern XENOWRAPPERWIN32_API int nxenowrapperwin32; XENOWRAPPERWIN32_API int fnxenowrapperwin32(void); and here is how I use it in C#.Net class xeno { [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?LoadLib@Cxenowrapperwin32@@QAEXXZ")] public static extern void xLoadLib(); public void LoadLib() { xLoadLib(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?UnloadLib@Cxenowrapperwin32@@QAEXXZ")] public static extern void xUnloadLib(); public void UnloadLib() { xUnloadLib(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xStart@Cxenowrapperwin32@@QAEXXZ")] public static extern void xStart(); public void Start() { xStart(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xUpdate@Cxenowrapperwin32@@QAEXXZ")] public static extern void xUpdate(); public void Update() { xUpdate(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xEnd@Cxenowrapperwin32@@QAEXXZ")] public static extern void xEnd(); public void End() { xEnd(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xMakeRigidBodyDynamicBox@Cxenowrapperwin32@@QAEXH@Z")] public static extern void xMakeRigidBodyDynamicBox(int objid); public void MakeRigidBodyDynamicBox(int id) { xMakeRigidBodyDynamicBox(id); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xMakeRigidBodyStaticBox@Cxenowrapperwin32@@QAEXH@Z")] public static extern void xMakeRigidBodyStaticBox(int objid); public void MakeRigidBodyStaticBox(int id) { xMakeRigidBodyStaticBox(id); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xSetGravity@Cxenowrapperwin32@@QAEXM@Z")] public static extern void xSetGravity(float grav); public void SetGravity(float g) { xSetGravity(g); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xSetRigidBodyPosition@Cxenowrapperwin32@@QAEXHMMM@Z")] public static extern void xSetRigidBodyPosition(int obj, float x, float y, float z); public void SetRigidBodyPosition(int id, float q, float w, float e) { xSetRigidBodyPosition(id, q, w, e); } } And in the main C#.Net program I do xeno tx = new xeno(); tx.Start(); tx.SetGravity(-1); tx.MakeRigidBodyStaticBox(ground.Id); tx.MakeRigidBodyDynamicBox(cube.Id); tx.SetRigidBodyPosition(cube.Id, 0, 50, 0);

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• Data won't save to SQL database, getting error "close() was never explicitly called on database"

  - by SnowLeppard

  I have a save button in the activity where the user enters data which does this: String subjectName = etName.getText().toString(); String subjectColour = etColour.getText().toString(); SQLDatabase entrySubject = new SQLDatabase(AddSubject.this); entrySubject.open(); entrySubject.createSubjectEntry(subjectName, subjectColour); entrySubject.close(); Which refers to this SQL database class: package com.***.schooltimetable; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.SQLException; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class SQLDatabase { public static final String KEY_SUBJECTS_ROWID = "_id"; public static final String KEY_SUBJECTNAME = "name"; public static final String KEY_COLOUR = "colour"; private static final String DATABASE_NAME = "Database"; private static final String DATABASE_TABLE_SUBJECTS = "tSubjects"; private static final int DATABASE_VERSION = 1; private DbHelper ourHelper; private final Context ourContext; private SQLiteDatabase ourDatabase; private static class DbHelper extends SQLiteOpenHelper { public DbHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); // TODO Auto-generated constructor stub } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub db.execSQL("CREATE TABLE " + DATABASE_TABLE_SUBJECTS + " (" + KEY_SUBJECTS_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_SUBJECTNAME + " TEXT NOT NULL, " + KEY_COLOUR + " TEXT NOT NULL);"); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE_SUBJECTS); onCreate(db); } } public SQLDatabase(Context c) { ourContext = c; } public SQLDatabase open() throws SQLException { ourHelper = new DbHelper(ourContext); ourDatabase = ourHelper.getWritableDatabase(); return this; } public void close() { ourHelper.close(); } public long createSubjectEntry(String subjectName, String subjectColour) { // TODO Auto-generated method stub ContentValues cv = new ContentValues(); cv.put(KEY_SUBJECTNAME, subjectName); cv.put(KEY_COLOUR, subjectColour); return ourDatabase.insert(DATABASE_TABLE_SUBJECTS, null, cv); } public String[][] getSubjects() { // TODO Auto-generated method stub String[] Columns = new String[] { KEY_SUBJECTNAME, KEY_COLOUR }; Cursor c = ourDatabase.query(DATABASE_TABLE_SUBJECTS, Columns, null, null, null, null, null); String[][] Result = new String[1][]; // int iRow = c.getColumnIndex(KEY_LESSONS_ROWID); int iName = c.getColumnIndex(KEY_SUBJECTNAME); int iColour = c.getColumnIndex(KEY_COLOUR); for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { Result[0][c.getPosition()] = c.getString(iName); Result[1][c.getPosition()] = c.getString(iColour); Settings.subjectCount = c.getPosition(); TimetableEntry.subjectCount = c.getPosition(); } return Result; } This class has other variables and other variations of the same methods for multiple tables in the database, i've cut out the irrelevant ones. I'm not sure what I need to close and where, I've got the entrySubject.close() in my activity. I used the methods for the database from the NewBoston tutorials. Can anyone see what I've done wrong, or where my problem is? Thanks.

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• Why won't my program terminate?

  - by Qwertie

  I have a .NET Compact Framework app that can runs on three windows machines (Desktop windows and two WinCE machines) and on the WinCE devices, the process never terminates on exit, even if I call Application.Exit(). Besides .NET, it uses one COM component (which does everything on the UI thread). If I break into the debugger after exitting, Visual Studio shows only one thread and a completely blank call stack. What could possibly cause this? Update: My process is terminating on the desktop but not the WinCE machines. I tried to force the process to terminate with the following code, but it doesn't work: [DllImport("coredll.dll")] static extern int TerminateProcess(IntPtr hProcess, uint uExitCode); static public void ExitProcess() { if (Platform.IsWindowsCE) TerminateProcess(new IntPtr(-1), 0); Application.Exit(); } There are also supposed to be ExitProcess() and GetCurrentProcess() APIs like the following, but if I try to call them, I get EntryPointNotFoundException. Therefore I am using TerminateProcess(-1, 0) because the documentation for the desktop version of GetCurrentProcess claims that it simply returns -1. [DllImport("coredll.dll")] static extern int ExitProcess(IntPtr hProcess); [DllImport("coredll.dll")] static extern IntPtr GetCurrentProcess(); Even if I do this: static public void ExitProcess() { if (Platform.IsWindowsCE) TerminateProcess(new IntPtr(-1), 0); Application.Exit(); throw new Exception("Trying to force quit."); } A fatal error dialog appears with a helpful "Quit" button, but pushing the button still does not cause the process to terminate on either machine!

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• LZMA for Delphi

  - by SaCi

  I got a LZMA library on 7-zip site, but that didn't worked. I'm not using files, just stream. And for some why the library on 7-zip site just write the header on the stream but not compress the stream. Some one faced the some problem ? Have some example ? Know other LZMA library for Delphi ? Tks

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• problem parsing with XMLReader (using ReadSubTree)

  - by no9

  Hello. Im trying to build a simple XML to Controls parser in my CF application. In the code below the string im trying to parse looks like this: "<Panel><Label>Text1</Label><Label>Text2</Label></Panel>" The result i want with this code would be a Panel with two labels. But the problem is when the first Label is parsed the subreader.Read() returns false in the ParsePanelElementh method, and so it falls out of while statement. Since im new into XMLReader i must be missing something very simple. Any help would be apreciated ! peace. static class XMLParser { public static Control Parse(string aXmlString) { XmlReader reader = XmlReader.Create(new StringReader(aXmlString)); return ParseXML(reader); } public static Control ParseXML(XmlReader reader) { using (reader) { while (reader.Read()) { if (reader.NodeType == XmlNodeType.Element) { if (reader.LocalName == "Panel") { return ParsePanelElement(reader); } if (reader.LocalName == "Label") { return ParseLabelElement(reader); } } } } return null; } private static Control ParsePanelElement(XmlReader reader) { var myPanel = new Panel(); XmlReader subReader = reader.ReadSubtree(); while (subReader.Read()) { Control subControl = ParseXML(subReader); if (subControl != null) { myPanel.Controls.Add(subControl); }; } return myPanel; } private static Control ParseLabelElement(XmlReader reader) { reader.Read(); var myString = reader.Value as string; var myLabel = new Label(); myLabel.Text = myString; return myLabel; } }

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• How can I get my Web API app to run again after upgrading to MVC 5 and Web API 2?

  - by Clay Shannon

  I upgraded my Web API app to the funkelnagelneu versions using this guidance: http://www.asp.net/mvc/tutorials/mvc-5/how-to-upgrade-an-aspnet-mvc-4-and-web-api-project-to-aspnet-mvc-5-and-web-api-2 However, after going through the steps (it seems all this should be automated, anyway), I tried to run it and got, "A project with an Output Type of Class Library cannot be started directly" What in Sam Hills Brothers Coffee is going on here? Who said this was a class library? So I opened Project Properties, and changed it (it was marked as "Class Library" for some reason - it either wasn't yesterday, or was and worked fine) to an Output Type of "Windows Application" ("Console Application" and "Class Library" being the only other options). Now it won't compile, complaining: "*Program 'c:\Platypus_Server_WebAPI\PlatypusServerWebAPI\PlatypusServerWebAPI\obj\Debug\PlatypusServerWebAPI.exe' does not contain a static 'Main' method suitable for an entry point...*" How can I get my Web API app back up and running in view of this quandary? UPDATE Looking in packages.config, two entries seem chin-scratch-worthy: <package id="Microsoft.AspNet.Providers" version="1.2" targetFramework="net40" /> <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net40" /> All the others target net451. Could this be the problem? Should I remove these packages? UPDATE 2 I tried to uninstall the Microsoft.Web.Infrastructure package (its description leads me to believe I don't need it; also, it has no dependencies) via the NuGet package manager, but it tells me, "NuGet failed to install or uninstall the selected package in the following project(s). [mine]" UPDATE 3 I went through the steps in again, and found that I had missed one step. I had to change this entry in the Application web.config File : <dependentAssembly> <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-5.0.0.0" newVersion="5.0.0.0" /> </dependentAssembly> (from "4.0.0.0" to "5.0.0.0") ...but I still get the same result - it rebuilds/compiles, but won't run, with "A project with an Output Type of Class Library cannot be started directly" UPDATE 4 Thinking about the err msg, that it can't directly open a class library, I thought, "Sure you can't/won't -- this is a web app, not a project. So I followed a hunch, closed the project, and reopened it as a website (instead of reopening a project). That has gotten me further, at least; now I see a YSOD: Could not load file or assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. UPDATE 5 Note: The project is now (after being opened as a web site) named "localhost_48614" And...there is no longer a "References" folder...?!?!? As to that YSOD I'm getting, the official instructions (http://www.asp.net/mvc/tutorials/mvc-5/how-to-upgrade-an-aspnet-mvc-4-and-web-api-project-to-aspnet-mvc-5-and-web-api-2) said to do this, and I quote: "Update all elements that contain “System.Web.WebPages.Razor” from version “2.0.0.0” to version“3.0.0.0”." UPDATE 6 When I select Tools Library Package Manager Manage NuGet Packages for Solution now, I get, "Operation failed. Unable to locate the solution directory. Please ensure that the solution has been saved." So I save it, and it saves it with this funky new name (C:\Users\clay\Documents\Visual Studio 2013\Projects\localhost_48614\localhost_48614.sln) I get the Yellow Strip of Enlightenment across the top of the NuGet Package Manager telling me, "Some NuGet packages are missing from this solution. Click to restore from your online package sources." I do (click the "Restore" button, that is), and it downloads the missing packages ... I end up with the 30 packages. I try to run the app/site again, and ... the erstwhile YSOD becomes a compilation error: The pre-application start initialization method Start on type System.Web.Mvc.PreApplicationStartCode threw an exception with the following error message: Could not load file or assembly 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.. Argghhhh!!! (and it's not even talk-like-a-pirate day).

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• Accessing py2exe program over network in Windows 98 throws ImportErrors

  - by darvids0n

  I'm running a py2exe-compiled python program from one server machine on a number of client machines (mapped to a network drive on every machine, say W:). For Windows XP and later machines, have so far had zero problems with Python picking up W:\python23.dll (yes, I'm using Python 2.3.5 for W98 compatibility and all that). It will then use W:\zlib.pyd to decompress W:\library.zip containing all the .pyc files like os and such, which are then imported and the program runs no problems. The issue I'm getting is on some Windows 98 SE machines (note: SOME Windows 98 SE machines, others seem to work with no apparent issues). What happens is, the program runs from W:, the W:\python23.dll is, I assume, found (since I'm getting Python ImportErrors, we'd need to be able to execute a Python import statement), but a couple of things don't work: 1) If W:\library.zip contains the only copy of the .pyc files, I get ZipImportError: can't decompress data; zlib not available (nonsense, considering W:\zlib.pyd IS available and works fine with the XP and higher machines on the same network). 2) If the .pyc files are actually bundled INSIDE the python exe by py2exe, OR put in the same directory as the .exe, OR put into a named subdirectory which is then set as part of the PYTHONPATH variable (e.g W:\pylib), I get ImportError: no module named os (os is the first module imported, before sys and anything else). Come to think of it, sys.path wouldn't be available to search if os was imported before it maybe? I'll try switching the order of those imports but my question still stands: Why is this a sporadic issue, working on some networks but not on others? And how would I force Python to find the files that are bundled inside the very executable I run? I have immediate access to the working Windows 98 SE machine, but I only get access to the non-working one (a customer of mine) every morning before their store opens. Thanks in advance! EDIT: Okay, big step forward. After debugging with PY2EXE_VERBOSE, the problem occurring on the specific W98SE machine is that it's not using the right path syntax when looking for imports. Firstly, it doesn't seem to read the PYTHONPATH environment variable (there may be a py2exe-specific one I'm not aware of, like PY2EXE_VERBOSE). Secondly, it only looks in one place before giving up (if the files are bundled inside the EXE, it looks there. If not, it looks in library.zip). EDIT 2: In fact, according to this, there is a difference between the sys.path in the Python interpreter and that of Py2exe executables. Specifically, sys.path contains only a single entry: the full pathname of the shared code archive. Blah. No fallbacks? Not even the current working directory? I'd try adding W:\ to PATH, but py2exe doesn't conform to any sort of standards for locating system libraries, so it won't work. Now for the interesting bit. The path it tries to load atexit, os, etc. from is: W:\\library.zip\<module>.<ext> Note the single slash after library.zip, but the double slash after the drive letter (someone correct me if this is intended and should work). It looks like if this is a string literal, then since the slash isn't doubled, it's read as an (invalid) escape sequence and the raw character is printed (giving W:\library.zipos.pyd, W:\library.zipos.dll, ... instead of with a slash); if it is NOT a string literal, the double slash might not be normpath'd automatically (as it should be) and so the double slash confuses the module loader. Like I said, I can't just set PYTHONPATH=W:\\library.zip\\ because it ignores that variable. It may be worth using sys.path.append at the start of my program but hard-coding module paths is an absolute LAST resort, especially since the problem occurs in ONE configuration of an outdated OS. Any ideas? I have one, which is to normpath the sys.path.. pity I need os for that. Another is to just append os.getenv('PATH') or os.getenv('PYTHONPATH') to sys.path... again, needing the os module. The site module also fails to initialise, so I can't use a .pth file. I also recently tried the following code at the start of the program: for pth in sys.path: fErr.write(pth) fErr.write(' to ') pth.replace('\\\\','\\') # Fix Windows 98 pathing issues fErr.write(pth) fErr.write('\n') But it can't load linecache.pyc, or anything else for that matter; it can't actually execute those commands from the looks of things. Is there any way to use built-in functionality which doesn't need linecache to modify the sys.path dynamically? Or am I reduced to hard-coding the correct sys.path?

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• Flex special characters not embedding

  - by Hanpan

  Hi, I am using the following code to embed Arial into my application: [Embed(source='../assets/fonts/Arial.ttf',fontFamily='CustomFont',fontWeight='regular', unicodeRange='U+0020-U+0040,U+0041-U+005A,U+005B-U+0060,U+0061-U+007A,U+007B-U+007E,U+0080-U+00FF,U+0100-U+017F,U+0400-U+04FF,U+0370-U+03FF,U+1E00-U+1EFF,U+2022,U+2219,U+20AC-U+21AC', mimeType='application/x-font-truetype' )] public static var MY_FONT:Class; [Embed(source='../assets/fonts/Arial Bold.ttf',fontFamily='CustomFont',fontWeight='bold', unicodeRange='U+0020-U+0040,U+0041-U+005A,U+005B-U+0060,U+0061-U+007A,U+007B-U+007E,U+0080-U+00FF,U+0100-U+017F,U+0400-U+04FF,U+0370-U+03FF,U+1E00-U+1EFF,U+2022,U+2219,U+20AC-U+21AC', mimeType='application/x-font-truetype' )] public static var MY_FONT_BOLD:Class; [Embed(source='../assets/fonts/Arial Italic.ttf',fontFamily='CustomFont',fontWeight='regular',fontStyle="italic", unicodeRange='U+0020-U+0040,U+0041-U+005A,U+005B-U+0060,U+0061-U+007A,U+007B-U+007E,U+0080-U+00FF,U+0100-U+017F,U+0400-U+04FF,U+0370-U+03FF,U+1E00-U+1EFF,U+2022,U+2219,U+20AC-U+21AC', mimeType='application/x-font-truetype' )] public static var MY_FONT_ITALIC:Class; [Embed(source='../assets/fonts/Arial Bold Italic.ttf',fontFamily='CustomFont',fontWeight='bold',fontStyle="italic", unicodeRange='U+0020-U+0040,U+0041-U+005A,U+005B-U+0060,U+0061-U+007A,U+007B-U+007E,U+0080-U+00FF,U+0100-U+017F,U+0400-U+04FF,U+0370-U+03FF,U+1E00-U+1EFF,U+2022,U+2219,U+20AC-U+21AC', mimeType='application/x-font-truetype' )] public static var MY_FONT_ITALIC_BOLD:Class; [Embed(source='../assets/fonts/Arial Unicode.ttf',fontFamily='CustomFont',fontWeight='regular', unicodeRange='U+0020-U+0040,U+0041-U+005A,U+005B-U+0060,U+0061-U+007A,U+007B-U+007E,U+0080-U+00FF,U+0100-U+017F,U+0400-U+04FF,U+0370-U+03FF,U+1E00-U+1EFF,U+2022,U+2219,U+20AC-U+21AC', mimeType='application/x-font-truetype' )] public static var MY_FONT_UNICODE:Class; It's working fine for foreign characters, but no special characters (copyright, trademark, euro sign etc) are working. Can anyone help? I've checked my unicode ranges, they should work fine!

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• How do I correctly use Unity to pass a ConnectionString to my repository classes?

  - by GenericTypeTea

  I've literally just started using the Unity Application Blocks Dependency Injection library from Microsoft, and I've come unstuck. This is my IoC class that'll handle the instantiation of my concrete classes to their interface types (so I don't have to keep called Resolve on the IoC container each time I want a repository in my controller): public class IoC { public static void Intialise(UnityConfigurationSection section, string connectionString) { _connectionString = connectionString; _container = new UnityContainer(); section.Configure(_container); } private static IUnityContainer _container; private static string _connectionString; public static IMovementRepository MovementRepository { get { return _container.Resolve<IMovementRepository>(); } } } So, the idea is that from my Controller, I can just do the following: _repository = IoC.MovementRepository; I am currently getting the error: Exception is: InvalidOperationException - The type String cannot be constructed. You must configure the container to supply this value. Now, I'm assuming this is because my mapped concrete implementation requires a single string parameter for its constructor. The concrete class is as follows: public sealed class MovementRepository : Repository, IMovementRepository { public MovementRepository(string connectionString) : base(connectionString) { } } Which inherits from: public abstract class Repository { public Repository(string connectionString) { _connectionString = connectionString; } public virtual string ConnectionString { get { return _connectionString; } } private readonly string _connectionString; } Now, am I doing this the correct way? Should I not have a constructor in my concrete implementation of a loosely coupled type? I.e. should I remove the constructor and just make the ConnectionString property a Get/Set so I can do the following: public static IMovementRepository MovementRepository { get { return _container.Resolve<IMovementRepository>( new ParameterOverrides { { "ConnectionString", _connectionString } }.OnType<IMovementRepository>() ); } } So, I basically wish to know how to get my connection string to my concrete type in the correct way that matches the IoC rules and keeps my Controller and concrete repositories loosely coupled so I can easily change the DataSource at a later date.

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• Exception: "Given final block not properly padded" in Linux, but it works in Windows

  - by user1685364

  My application works in windows, but fails in Linux with Given final block not properly padded exception. Configuration: JDK Version: 1.6 Windows : version 7 Linux : CentOS 5.8 64bit My code is below: import java.io.IOException; import java.io.UnsupportedEncodingException; import java.security.InvalidKeyException; import java.security.Key; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.KeyGenerator; import javax.crypto.NoSuchPaddingException; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class SecurityKey { private static Key key = null; private static String encode = "UTF-8"; private static String cipherKey = "DES/ECB/PKCS5Padding"; static { try { KeyGenerator generator = KeyGenerator.getInstance("DES"); String seedStr = "test"; generator.init(new SecureRandom(seedStr.getBytes())); key = generator.generateKey(); } catch(Exception e) { } } // SecurityKey.decodeKey("password") public static String decodeKey(String str) throws Exception { if(str == null) return str; Cipher cipher = null; byte[] raw = null; BASE64Decoder decoder = new BASE64Decoder(); String result = null; cipher = Cipher.getInstance(cipherKey); cipher.init(Cipher.DECRYPT_MODE, key); raw = decoder.decodeBuffer(str); byte[] stringBytes = null; stringBytes = cipher.doFinal(raw); // Exception!!!! result = new String(stringBytes, encode); return result; } } At the line: ciper.doFilnal(raw); the following exception is thrown: javax.crypto.BadPaddingException: Given final block not properly padded How can I fix this issue?

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• seeing C# windows forms project code from F#

  - by Pessimist

  I have a C# Windows Forms project open with some C# code in it. Question: How can I have an F# file that I can write F# code in but still referencing all the C# code I have on Form1.cs (including the GUI). I can successfully do this: - Create a C# Windows Forms project - Create a F# Library project - Reference the F# Library DLL from my C# project - That way I can call F# functions from C# But I still can't see my buttons and textboxes from F# I understand that that is because it's a library and it can't reference System.Windows.Forms So how do I fix this? I don't want it to be a library or this or that, I just want it to be a file that will allow me to write F# code while being able to reference my C# Form and code. I guess you can say I want an F# file that is also a "partial class Form1" so that I can continue writing code for the same Project, but using F# instead. How do I do that?

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• CodePlex Daily Summary for Saturday, October 26, 2013

  CodePlex Daily Summary for Saturday, October 26, 2013Popular ReleasesEvent-Based Components AppBuilder: AB3.AppDesigner.57.10: Iteration 57.10 (Redesign): Edit of wire points for complex wires with N points redesigned. Nice side effect because of new design: Now the related wire segment and arrow moves as well! Improved: WireDecoratorMoreTerra (Terraria World Viewer): MoreTerra 1.11.4: Release 1.11.4 =========== = Compatibility = =========== Updated to add the new tiles/walls in 1.2.1Gac Library -- C++ Utilities for GPU Accelerated GUI and Script: Gaclib 0.5.5.0: Gaclib.zip contains the following content GacUIDemo Demo solution and projects Public Source GacUI library Document HTML document. Please start at reference_gacui.html Content Necessary CSS/JPG files for document. Improvements to the previous release Add 1 demos Editor.Toolstrip.Document Added new features GuiDocumentViewer and GuiDocumentLabel is editable like an RichTextEdit control.Emptycanvas: Emptycanvas v21: Maintenant plusieurs lumières possibles.PowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.0.7: This is a bug fix release, containing some important fixes! Fixed issue where Session 0 was not detected correctly, resulting in issues when attempting to display a UI when none was allowed Fixed Installation Prompt and Installation Restart Prompt appearing when deploy mode was non-interactive or silent Fixed issue where defer prompt is displayed after force closing multiple applications Fixed issue executing blocked app execution dialog from UNC path (executed instead from local tempo...BlackJumboDog: Ver5.9.7: 2013.10.24 Ver5.9.7 (1)FTP???????、２?????????????shift-jis????????????? (2)????HTTP????、???????POST??????????????????CtrlAltStudio Viewer: CtrlAltStudio Viewer 1.1.0.34322 Alpha 4: This experimental release of the CtrlAltStudio Viewer includes the following significant features: Oculus Rift support. Stereoscopic 3D display support. Based on Firestorm viewer 4.4.2 codebase. For more details, see the release notes linked to below. Release notes: http://ctrlaltstudio.com/viewer/release-notes/1-1-0-34322-alpha-4 Support info: http://ctrlaltstudio.com/viewer/support Privacy policy: http://ctrlaltstudio.com/viewer/privacy Disclaimer: This software is not provided or sup...VsTortoise - a TortoiseSVN add-in for Microsoft Visual Studio: VsTortoise Build 32 Beta: Note: This release does not work with custom VsTortoise toolbars. These get removed every time when you shutdown Visual Studio. (#7940) This release has been tested with Visual Studio 2008, 2010, 2012 and 2013, using TortoiseSVN 1.6, 1.7 and 1.8. It should also still work with Visual Studio 2005, but I couldn't find anyone to test it in VS2005. Build 32 (beta) changelogNew: Added Visual Studio 2013 support New: Added Visual Studio 2012 support New: Added SVN 1.8 support New: Added 'Ch...ABCat: ABCat v.2.0.1a: ?????????? ???????? ? ?????????? ?????? ???? ??? Win7. ????????? ?????? ????????? ?? ???????. ????? ?????, ???? ????? ???????? ????????? ?????????? ????????? "?? ??????? ????? ???????????? ?????????? ??????...", ?? ?????????? ??????? ? ?????????? ?????? Microsoft SQL Ce ?? ????????? ??????: http://www.microsoft.com/en-us/download/details.aspx?id=17876. ???????? ?????? x64 ??? x86 ? ??????????? ?? ?????? ???????????? ???????. ??? ??????? ????????? ?? ?????????? ?????? Entity Framework, ? ???? ...NB_Store - Free DotNetNuke Ecommerce Catalog Module: NB_Store v2.3.8 Rel3: vv2.3.8 Rel3 updates the version number in the ManagerMenuDefault.xml. Simply update the version setting in the Back Office to 02.03.08 if you have already installed Rel2. v2.3.8 Is now DNN6 and DNN7 compatible NOTE: NB_Store v2.3.8 is NOT compatible with DNN5. SOURCE CODE : https://github.com/leedavi/NB_Store (Source code has been moved to GitHub, due to issues with codeplex SVN and the inability to move easily to GIT on codeplex)patterns & practices: Data Access Guidance: Data Access Guidance 2013: This is the 2013 release of Data Access Guidance. The documentation for this RI is also available on MSDN: Data Access for Highly-Scalable Solutions: Using SQL, NoSQL, and Polyglot Persistence: http://msdn.microsoft.com/en-us/library/dn271399.aspxLINQ to Twitter: LINQ to Twitter v2.1.10: Supports .NET 3.5, .NET 4.0, .NET 4.5, Silverlight 4.0, Windows Phone 7.1, Windows Phone 8, Client Profile, Windows 8, and Windows Azure. 100% Twitter API coverage. Also supports Twitter API v1.1! Also on NuGet.Media Companion: Media Companion MC3.584b: IMDB changes fixed. Fixed* mc_com.exe - Fixed to using new profile entries. * Movie - fixed rename movie and folder if use foldername selected. * Movie - Alt Edit Movie, trailer url check if changed and confirm valid. * Movie - Fixed IMDB poster scraping * Movie - Fixed outline and Plot scraping, including removal of Hyperlink's. * Movie Poster refactoring, attempts to catch gdi+ errors Revision HistoryJayData -The unified data access library for JavaScript: JayData 1.3.4: JayData is a unified data access library for JavaScript to CRUD + Query data from different sources like WebAPI, OData, MongoDB, WebSQL, SQLite, HTML5 localStorage, Facebook or YQL. The library can be integrated with KendoUI, Angular.js, Knockout.js or Sencha Touch 2 and can be used on Node.js as well. See it in action in this 6 minutes video KendoUI examples: JayData example site Examples for map integration JayData example site What's new in JayData 1.3.4 For detailed release notes check ...TerrariViewer: TerrariViewer v7.2 [Terraria Inventory Editor]: Added "Check for Update" button Hopefully fixed Windows XP issue You can now backspace in Item stack fieldsSimple Injector: Simple Injector v2.3.6: This patch releases fixes one bug concerning resolving open generic types that contain nested generic type arguments. Nested generic types were handled incorrectly in certain cases. This affects RegisterOpenGeneric and RegisterDecorator. (work item 20332)Virtual Wifi Hotspot for Windows 7 & 8: Virtual Router Plus 2.6.0: Virtual Router Plus 2.6.0Fast YouTube Downloader: Fast YouTube Downloader 2.3.0: Fast YouTube DownloaderMagick.NET: Magick.NET 6.8.7.101: Magick.NET linked with ImageMagick 6.8.7.1. Breaking changes: - Renamed Matrix classes: MatrixColor = ColorMatrix and MatrixConvolve = ConvolveMatrix. - Renamed Depth method with Channels parameter to BitDepth and changed the other method into a property.VidCoder: 1.5.9 Beta: Added Rip DVD and Rip Blu-ray AutoPlay actions for Windows: now you can have VidCoder start up and scan a disc when you insert it. Go to Start -> AutoPlay to set it up. Added error message for Windows XP users rather than letting it crash. Removed "quality" preset from list for QSV as it currently doesn't offer much improvement. Changed installer to ignore version number when copying files over. Should reduce the chances of a bug from me forgetting to increment a version number. Fixed ...New ProjectsASP.NET Web 2.0 Project: This is a project for a simple ASP.NET page that takes in two numbers and displays their sum - part of practical work for online MSc course, Herts University.CJQ: Internet information collectorCppUtility: Originally Function and Bind to make more people could be aware, then became CppUtility, a supplement to the existing STL library.DruDot CMS: The Project is a attempt to create a .Net CMS in parallel line to Drupal in PHP EventBrokR (Event broker): Event Broker - Publish and Take asynchronous event from multiple consumersHP Agile Management Lite: HP Agile Management LiteJohnny's Web Browser: wb aka Johnny's Web Browser is a free and open source web-browser that implement .NET framework classes only. Works with all Windows version with .NET frameworkKingSurvival: King Survival Game - examples for High-Quality Programming Code and Spaghetti codeNow We're Talking - BizTalk automated testing framework: The NWT framework for BizTalk allows developpers to automate testing of business processes, based on detailed scenarios.Pescar2013Shop: Proyecto basico de electrodomesticos.Pescar2013ShopLucasEzequielAyrton: asdasdasdasdsdadPescar2013Shop-MatiasyMaru: Página web de electrodomésticos.ProConfig: This is a project for Professional Project Configuration, which is based on .NET reflection.Regional Map for AWS / Amazon Cloud VPC: RegionalMap for Amazon Web Services creates an graphical overview of your VPC configuration of a region. Sams Simple Calculator: Sams Simple CalculatorSharePoint 2013 - Set App Master Page: Simple powershell script for setting a SharePoint 2013 app master page urlSimpleParser: Simple one pass parser that finds a words in text.SudokuConsoleApp: Sample C# console application solving sudoku with recursive algorithm.Team[ORC]: Simple Web Application Movies RoomTFS Event Manager: Allows you to manage Team Foundation Server event subscriptions as well as help troubleshoot event job processing.Wechat Dot Net: .NET based utility for Wechat platformWindows Phone Title Localization Tool: Windows Phone Tile Localization Tool is a Visual Studio extension that helps to generate and manage title and tile title resource dllsWPF TextBox provides only digits input: You can select what type of input you need - normal, only digits or digits with decimal point.wsscMarvelHeroes2013: This is the project related to module Web Scripting and Application Development, a web 2.0 site about Marvel's superheroes.

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• Model associations

  - by Kalyan M

  I have two models Library and Book. In my Library model, I have an array - book_ids. The primary key of Book model is ID. How do I create a has_many :books relation in my library model? This is a legacy database we are using with rails. Thanks.

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• Python import error: Symbol not found, but the symbol is present in the file

  - by Autopulated

  I get this error when I try to import ssrc.spread: ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/ssrc/_spread.so, 2): Symbol not found: __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE The file in question (_spread.so) includes the symbol: $ nm _spread.so | grep _ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE U __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE U __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE (twice because the file is a fat ppc/x86 binary) The archive header information of _spread.so is: $ otool -fahv _spread.so Fat headers fat_magic FAT_MAGIC nfat_arch 2 architecture ppc7400 cputype CPU_TYPE_POWERPC cpusubtype CPU_SUBTYPE_POWERPC_7400 capabilities 0x0 offset 4096 size 235272 align 2^12 (4096) architecture i386 cputype CPU_TYPE_I386 cpusubtype CPU_SUBTYPE_I386_ALL capabilities 0x0 offset 241664 size 229360 align 2^12 (4096) /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/ssrc/_spread.so (architecture ppc7400): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC PPC ppc7400 0x00 BUNDLE 10 1420 NOUNDEFS DYLDLINK BINDATLOAD TWOLEVEL WEAK_DEFINES BINDS_TO_WEAK /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/ssrc/_spread.so (architecture i386): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC I386 ALL 0x00 BUNDLE 11 1604 NOUNDEFS DYLDLINK BINDATLOAD TWOLEVEL WEAK_DEFINES BINDS_TO_WEAK And my python is python 2.6.4: $ which python | xargs otool -fahv Fat headers fat_magic FAT_MAGIC nfat_arch 2 architecture ppc cputype CPU_TYPE_POWERPC cpusubtype CPU_SUBTYPE_POWERPC_ALL capabilities 0x0 offset 4096 size 9648 align 2^12 (4096) architecture i386 cputype CPU_TYPE_I386 cpusubtype CPU_SUBTYPE_I386_ALL capabilities 0x0 offset 16384 size 13176 align 2^12 (4096) /Library/Frameworks/Python.framework/Versions/2.6/bin/python (architecture ppc): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC PPC ALL 0x00 EXECUTE 11 1268 NOUNDEFS DYLDLINK TWOLEVEL /Library/Frameworks/Python.framework/Versions/2.6/bin/python (architecture i386): Mach header magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC I386 ALL 0x00 EXECUTE 11 1044 NOUNDEFS DYLDLINK TWOLEVEL There seems to be a difference in the ppc architecture in the files, but I'm running on an intel, so I don't see why this should cause a problem. So why might the symbol not be found?

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• Can one use polygon() or equivalent in lattice and ggplot2 plots?

  - by Alex Reynolds

  Is it possible to annotate lattice (or ggplot2) figures with elements created with polygon() (or elements created with a similar function) from the graphics library? I'm not too familiar with either library beyond examples of simple graphs posted on the web and printed in Deepayan Sarkar's book. Therefore, while I have code for what I've been doing in R with the graphics library, pointing me to relevant, equivalent functions and usage examples for lattice or ggplot2 specifically would be appreciated. Thanks.

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• how to get an SDP record for bluetooth service??

  - by user302798

  Hi I'm new to both winsock and bluetooth programming. I need to develop a bluetooth service to run on a pc. Looking at the MSDN library they say to use WSASetService(http://msdn.microsoft.com/en-us/library/aa362921%28VS.85%29.aspx) function to publish a service. The problem is that the WSAQUERYSET(http://msdn.microsoft.com/en-us/library/aa362920%28VS.85%29.aspx) structure, that has to be passed to WSASetService, needs a binary SDP record and i don't know how to get it. In the Windows embedded section of the MSDN library they describe a procedure to obtain an SDP record using Bthnscreate. I installed Windows CE 6 to use this tool but i can't find it in the install directory nor in the entire system. How can i get an SDP record? Thanks!

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• Compiling and linking libcurl to create a stand alone dll

  - by Haraldo

  Hi, I've managed to compile a dll with the necessary linked libraries (*.lib) and with CURL_STATICLIB set in the preprocessor section among other settings. I'm using "libcurl-7.19.3-win32-ssl-msvc.zip" package and compiling with VS 2008 express. This has been the first version I managed to get compiled properly with no link issues etc. The problem I have now is that my dll needs libcurl.dll to function and this is not ok. My dll needs to be independent. I have no idea how to implement this. I've taken all day just to get what I've got compiled. I've got runtime library set to Multi threaded dll (debug/release) respectively under C/C++ - code generation. I've a number of preprocessor set - CURL_STATICLIB being one of them. Configuration Type is set to Dynamic Library Use of MFC is set to Use MFC in a static library Additional Library Directories is set to the lib folders (debug/release) respectively. I've noticed there is a curllib_static.lib file which I've tried instead of curllib.lib as an additional dependency but it only compiles with the later. This is driving me nuts! So I guess I need some guidance as to how to make my dll completely static so it doesn't have any dependencies. I notice my dll is currently dependent on: CURLLIB.DLL MSVCR90D.DLL As I'm pretty new to C++ it could be a setting I'm missing in VS 2008 but I'm not sure. One person said I should be using a static library with *.a files (libcurl.a) etc but when I do this I get link errors which I haven't been able to resolve. Any guidance here would be much appreciated.

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• C# Delegate under the hood question.

  - by Ted

  Hi Guys I was doing some digging around into delegate variance after reading the following tquestion in SO. "delegate-createdelegate-and-generics-error-binding-to-target-method" (sorry not allowed to post more than one hyperlink as a newbie here!) I found a very nice bit of code from Barry kelly at https://www.blogger.com/comment.g?blogID=8184237816669520763&postID=2109708553230166434 Here it is (in a sugared-up form :-) using System; namespace ConsoleApplication4 { internal class Base { } internal class Derived : Base { } internal delegate void baseClassDelegate(Base b); internal delegate void derivedClassDelegate(Derived d); internal class App { private static void Foo1(Base b) { Console.WriteLine("Foo 1"); } private static void Foo2(Derived b) { Console.WriteLine("Foo 2"); } private static T CastDelegate<T>(Delegate src) where T : class { return (T) (object) Delegate.CreateDelegate( typeof (T), src.Target, src.Method, true); // throw on fail } private static void Main() { baseClassDelegate a = Foo1; // works fine derivedClassDelegate b = Foo2; // works fine b = a.Invoke; // the easy way to assign delegate using variance, adds layer of indirection though b(new Derived()); b = CastDelegate<derivedClassDelegate>(a); // the hard way, avoids indirection b(new Derived()); } } } I understand all of it except this one (what looks very simple) line. b = a.Invoke; // the easy way to assign delegate using variance, adds layer of indirection though Can anyone tell me: how it is possible to call invoke without passing the param required by the static function. When is going on under the hood when you assign the return value from calling invoke What does Barry mean by extra indirection (in his comment)

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• I don't understand how work call_once

  - by SABROG

  Please help me understand how work call_once Here is thread-safe code. I don't understand why this need Thread Local Storage and global_epoch variables. Variable _fast_pthread_once_per_thread_epoch can be changed to constant/enum like {FAST_PTHREAD_ONCE_INIT, BEING_INITIALIZED, FINISH_INITIALIZED}. Why needed count calls in global_epoch? I think this code can be rewriting with logc: if flag FINISH_INITIALIZED do nothing, else go to block with mutexes and this all. #ifndef FAST_PTHREAD_ONCE_H #define FAST_PTHREAD_ONCE_H #include #include typedef sig_atomic_t fast_pthread_once_t; #define FAST_PTHREAD_ONCE_INIT SIG_ATOMIC_MAX extern __thread fast_pthread_once_t _fast_pthread_once_per_thread_epoch; #ifdef __cplusplus extern "C" { #endif extern void fast_pthread_once( pthread_once_t *once, void (*func)(void) ); inline static void fast_pthread_once_inline( fast_pthread_once_t *once, void (*func)(void) ) { fast_pthread_once_t x = *once; /* unprotected access */ if ( x _fast_pthread_once_per_thread_epoch ) { fast_pthread_once( once, func ); } } #ifdef __cplusplus } #endif #endif FAST_PTHREAD_ONCE_H Source fast_pthread_once.c The source is written in C. The lines of the primary function are numbered for reference in the subsequent correctness argument. #include "fast_pthread_once.h" #include static pthread_mutex_t mu = PTHREAD_MUTEX_INITIALIZER; /* protects global_epoch and all fast_pthread_once_t writes */ static pthread_cond_t cv = PTHREAD_COND_INITIALIZER; /* signalled whenever a fast_pthread_once_t is finalized */ #define BEING_INITIALIZED (FAST_PTHREAD_ONCE_INIT - 1) static fast_pthread_once_t global_epoch = 0; /* under mu */ __thread fast_pthread_once_t _fast_pthread_once_per_thread_epoch; static void check( int x ) { if ( x == 0 ) abort(); } void fast_pthread_once( fast_pthread_once_t *once, void (*func)(void) ) { /*01*/ fast_pthread_once_t x = *once; /* unprotected access */ /*02*/ if ( x _fast_pthread_once_per_thread_epoch ) { /*03*/ check( pthread_mutex_lock(µ) == 0 ); /*04*/ if ( *once == FAST_PTHREAD_ONCE_INIT ) { /*05*/ *once = BEING_INITIALIZED; /*06*/ check( pthread_mutex_unlock(µ) == 0 ); /*07*/ (*func)(); /*08*/ check( pthread_mutex_lock(µ) == 0 ); /*09*/ global_epoch++; /*10*/ *once = global_epoch; /*11*/ check( pthread_cond_broadcast(&cv;) == 0 ); /*12*/ } else { /*13*/ while ( *once == BEING_INITIALIZED ) { /*14*/ check( pthread_cond_wait(&cv;, µ) == 0 ); /*15*/ } /*16*/ } /*17*/ _fast_pthread_once_per_thread_epoch = global_epoch; /*18*/ check (pthread_mutex_unlock(µ) == 0); } } This code from BOOST: #ifndef BOOST_THREAD_PTHREAD_ONCE_HPP #define BOOST_THREAD_PTHREAD_ONCE_HPP // once.hpp // // (C) Copyright 2007-8 Anthony Williams // // Distributed under the Boost Software License, Version 1.0. (See // accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #include #include #include #include "pthread_mutex_scoped_lock.hpp" #include #include #include namespace boost { struct once_flag { boost::uintmax_t epoch; }; namespace detail { BOOST_THREAD_DECL boost::uintmax_t& get_once_per_thread_epoch(); BOOST_THREAD_DECL extern boost::uintmax_t once_global_epoch; BOOST_THREAD_DECL extern pthread_mutex_t once_epoch_mutex; BOOST_THREAD_DECL extern pthread_cond_t once_epoch_cv; } #define BOOST_ONCE_INITIAL_FLAG_VALUE 0 #define BOOST_ONCE_INIT {BOOST_ONCE_INITIAL_FLAG_VALUE} // Based on Mike Burrows fast_pthread_once algorithm as described in // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2444.html template void call_once(once_flag& flag,Function f) { static boost::uintmax_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE; static boost::uintmax_t const being_initialized=uninitialized_flag+1; boost::uintmax_t const epoch=flag.epoch; boost::uintmax_t& this_thread_epoch=detail::get_once_per_thread_epoch(); if(epoch #endif I right understand, boost don't use atomic operation, so code from boost not thread-safe?

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• Traditional IO vs memory-mapped

  - by Senne

  I'm trying to illustrate the difference in performance between traditional IO and memory mapped files in java to students. I found an example somewhere on internet but not everything is clear to me, I don't even think all steps are nececery. I read a lot about it here and there but I'm not convinced about a correct implementation of neither of them. The code I try to understand is: public class FileCopy{ public static void main(String args[]){ if (args.length < 1){ System.out.println(" Wrong usage!"); System.out.println(" Correct usage is : java FileCopy <large file with full path>"); System.exit(0); } String inFileName = args[0]; File inFile = new File(inFileName); if (inFile.exists() != true){ System.out.println(inFileName + " does not exist!"); System.exit(0); } try{ new FileCopy().memoryMappedCopy(inFileName, inFileName+".new" ); new FileCopy().customBufferedCopy(inFileName, inFileName+".new1"); }catch(FileNotFoundException fne){ fne.printStackTrace(); }catch(IOException ioe){ ioe.printStackTrace(); }catch (Exception e){ e.printStackTrace(); } } public void memoryMappedCopy(String fromFile, String toFile ) throws Exception{ long timeIn = new Date().getTime(); // read input file RandomAccessFile rafIn = new RandomAccessFile(fromFile, "rw"); FileChannel fcIn = rafIn.getChannel(); ByteBuffer byteBuffIn = fcIn.map(FileChannel.MapMode.READ_WRITE, 0,(int) fcIn.size()); fcIn.read(byteBuffIn); byteBuffIn.flip(); RandomAccessFile rafOut = new RandomAccessFile(toFile, "rw"); FileChannel fcOut = rafOut.getChannel(); ByteBuffer writeMap = fcOut.map(FileChannel.MapMode.READ_WRITE,0,(int) fcIn.size()); writeMap.put(byteBuffIn); long timeOut = new Date().getTime(); System.out.println("Memory mapped copy Time for a file of size :" + (int) fcIn.size() +" is "+(timeOut-timeIn)); fcOut.close(); fcIn.close(); } static final int CHUNK_SIZE = 100000; static final char[] inChars = new char[CHUNK_SIZE]; public static void customBufferedCopy(String fromFile, String toFile) throws IOException{ long timeIn = new Date().getTime(); Reader in = new FileReader(fromFile); Writer out = new FileWriter(toFile); while (true) { synchronized (inChars) { int amountRead = in.read(inChars); if (amountRead == -1) { break; } out.write(inChars, 0, amountRead); } } long timeOut = new Date().getTime(); System.out.println("Custom buffered copy Time for a file of size :" + (int) new File(fromFile).length() +" is "+(timeOut-timeIn)); in.close(); out.close(); } } When exactly is it nececary to use RandomAccessFile? Here it is used to read and write in the memoryMappedCopy, is it actually nececary just to copy a file at all? Or is it a part of memorry mapping? In customBufferedCopy, why is synchronized used here? I also found a different example that -should- test the performance between the 2: public class MappedIO { private static int numOfInts = 4000000; private static int numOfUbuffInts = 200000; private abstract static class Tester { private String name; public Tester(String name) { this.name = name; } public long runTest() { System.out.print(name + ": "); try { long startTime = System.currentTimeMillis(); test(); long endTime = System.currentTimeMillis(); return (endTime - startTime); } catch (IOException e) { throw new RuntimeException(e); } } public abstract void test() throws IOException; } private static Tester[] tests = { new Tester("Stream Write") { public void test() throws IOException { DataOutputStream dos = new DataOutputStream( new BufferedOutputStream( new FileOutputStream(new File("temp.tmp")))); for(int i = 0; i < numOfInts; i++) dos.writeInt(i); dos.close(); } }, new Tester("Mapped Write") { public void test() throws IOException { FileChannel fc = new RandomAccessFile("temp.tmp", "rw") .getChannel(); IntBuffer ib = fc.map( FileChannel.MapMode.READ_WRITE, 0, fc.size()) .asIntBuffer(); for(int i = 0; i < numOfInts; i++) ib.put(i); fc.close(); } }, new Tester("Stream Read") { public void test() throws IOException { DataInputStream dis = new DataInputStream( new BufferedInputStream( new FileInputStream("temp.tmp"))); for(int i = 0; i < numOfInts; i++) dis.readInt(); dis.close(); } }, new Tester("Mapped Read") { public void test() throws IOException { FileChannel fc = new FileInputStream( new File("temp.tmp")).getChannel(); IntBuffer ib = fc.map( FileChannel.MapMode.READ_ONLY, 0, fc.size()) .asIntBuffer(); while(ib.hasRemaining()) ib.get(); fc.close(); } }, new Tester("Stream Read/Write") { public void test() throws IOException { RandomAccessFile raf = new RandomAccessFile( new File("temp.tmp"), "rw"); raf.writeInt(1); for(int i = 0; i < numOfUbuffInts; i++) { raf.seek(raf.length() - 4); raf.writeInt(raf.readInt()); } raf.close(); } }, new Tester("Mapped Read/Write") { public void test() throws IOException { FileChannel fc = new RandomAccessFile( new File("temp.tmp"), "rw").getChannel(); IntBuffer ib = fc.map( FileChannel.MapMode.READ_WRITE, 0, fc.size()) .asIntBuffer(); ib.put(0); for(int i = 1; i < numOfUbuffInts; i++) ib.put(ib.get(i - 1)); fc.close(); } } }; public static void main(String[] args) { for(int i = 0; i < tests.length; i++) System.out.println(tests[i].runTest()); } } I more or less see whats going on, my output looks like this: Stream Write: 653 Mapped Write: 51 Stream Read: 651 Mapped Read: 40 Stream Read/Write: 14481 Mapped Read/Write: 6 What is makeing the Stream Read/Write so unbelievably long? And as a read/write test, to me it looks a bit pointless to read the same integer over and over (if I understand well what's going on in the Stream Read/Write) Wouldn't it be better to read int's from the previously written file and just read and write ints on the same place? Is there a better way to illustrate it? I've been breaking my head about a lot of these things for a while and I just can't get the whole picture..

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