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• Visual C++ Testing problem

  - by JamesMCCullum

  Hi there I have installed VisualAssert and cFix. I have been using Visual Studio C++ and programming in CLI/C++. I have a working Chess Game Program that works perfectly by itself.....and I have been studying testing and have many examples(with tutorials) I have found on the net, that compile and run in Visual Studio..... But as soon as I try and implement those tests on my chess game......I get this problem.... This is what its telling me 1>------ Build started: Project: ChessRound1, Configuration: Debug Win32 ------ 1>Compiling... 1>stdafx.cpp 1>C:\Program Files\VisualAssert\include\cfixpe.h(137) : error C3641: 'CfixpCrtInitEmbedding' : invalid calling convention '__cdecl ' for function compiled with /clr:pure or /clr:safe 1>C:\Program Files\VisualAssert\include\cfixpe.h(235) : error C4394: 'CfixpCrtInitEmbeddingRegistration' : per-appdomain symbol should not be marked with __declspec(allocate) 1>C:\Program Files\VisualAssert\include\cfixpe.h(235) : error C2393: 'CfixpCrtInitEmbeddingRegistration' : per-appdomain symbol cannot be allocated in segment '.CRT$XCX' 1>C:\Program Files\VisualAssert\include\cfixpe.h(244) : error C2440: 'initializing' : cannot convert from 'void (__cdecl *)(void)' to 'const CFIX_CRT_INIT_ROUTINE' 1> Address of a function yields __clrcall calling convention in /clr:pure and /clr:safe; consider using __clrcall in target type 1>C:\Program Files\VisualAssert\include\cfixpe.h(137) : error C3641: 'CfixpCrtInitEmbedding' : invalid calling convention '__cdecl ' for function compiled with /clr:pure or /clr:safe 1>Build log was saved at "file://c:\Users\james\Documents\Visual Studio 2008\Projects\ChessRound1\ChessRound1\Debug\BuildLog.htm" 1>ChessRound1 - 4 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Any ideas what I'm doing wrong? Im working with windows forms and have a heap of cpp source files. Any help would be appreciated. Thanks

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• What sorting algorithm is this?

  - by Mike

  Hi, I have a sorting algorithm as follows. My question is, which sorting algorithm is this? I thought it was bubble sort, but it does not do multiple runs. Any idea? Thanks! //sorting in descending order struct node { int value; node* NEXT; } //Assume HEAD pointer denotes the first element in the //linked list // only change the values…don’t have to change the //pointers Sort( Node *Head) { node* first,second,temp; first= Head; while(first!=null) { second=first->NEXT; while(second!=null) { if(first->value < second->value) { temp = new node(); temp->value=first->value; first->value=second->value; second->value=temp->value; delete temp; } second=second->NEXT; } first=first->NEXT; } }

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• Complex string split in Java

  - by c0mrade

  Consider the following String : 5|12345|value1|value2|value3|value4+5|777|value1|value2|value3|value4?5|777|value1|value2|value3|value4+ Here is how I want to split string, split it with + so I get this result : myArray[0] = "5|12345|value1|value2|value3|value4"; myArray[1] = "5|777|value1|value2|value3|value4?5|777|value1|value2|value3|value4"; if string has doesn't contain char "?" split it with "|" and continue to part II, if string does contain "?" split it and for each part split it with "|" and continue to part II. Here is part II : myObject.setAttribute1(newString[0]); ... myObject.setAttribute4(newString[3]); Here what I've got so far : private static String input = "5|12345|value1|value2|value3|value4+5|777|value1|value2|value3|value4?5|777|value1|value2|value3|value4+"; public void mapObject(String input){ String[] myArray = null; if (input.contains("+")) { myArray = input.split("+"); } else { myArray = new String[1]; myArray[0] = input; } for (int i = 0; i < myArray.length; i++) { String[] secondaryArray = null; String[] myObjectAttribute = null; if (myArray[i].contains("?")) { secondaryArray = temporaryString.myArray[i].split("?"); for (String string : secondaryArray) { myObjectAttribute = string.split("\\|"); } } else { myObjectAttribute = myArray[i].toString().split("\\|"); } myObject.setAttribute1(myObjectAttribute[0]); ... myObject.setAttribute4(myObjectAttribute[3]); System.out.println(myObject.toString()); } Problem : When I split myArray, going trough for with myArray[0], everything set up nice as it should. Then comes the myArray[1], its split into two parts then the second part overrides the value of the first(how do I know that?). I've overridden toString() method of myObject, when I finish I print the set values so I know that it overrides it, does anybody know how can I fix this?

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• Help matching fields between two classes

  - by Michael

  I'm not too experienced with Java yet, and I'm hoping someone can steer me in the right direction because right now I feel like I'm just beating my head against a wall... The first class is called MeasuredParams, and it's got 40+ numeric fields (height, weight, waistSize, wristSize - some int, but mostly double). The second class is a statistical classifier called Classifier. It's been trained on a subset of the MeasuredParams fields. The names of the fields that the Classifier has been trained on is stored, in order, in an array called reqdFields. What I need to do is load a new array, toClassify, with the values stored in the fields from MeasuredParams that match the field list (including order) found in reqdFields. I can make any changes necessary to the MeasuredParams class, but I'm stuck with Classifier as it is. My brute-force approach was to get rid of the fields in MeasuredParams and use an arrayList instead, and store the field names in an Enum object to act as an index pointer. Then loop through the reqdFields list, one element at a time, and find the matching name in the Enum object to find the correct position in the arrayList. Load the value stored at that positon into toClassify, and then continue on to the next element in reqdFields. I'm not sure how exactly I would search through the Enum object - it would be a lot easier if the field names were stored in a second arrayList. But then the index positions between the two would have to stay matched, and I'm back to using an Enum. I think. I've been running around in circles all afternoon, and I keep thinking there must be an easier way of doing it. I'm just stuck right now and can't see past what I've started. Any help would be GREATLY appreciated. Thanks so much! Michael

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• Unknown Exception on trying to initialize the web service stub created by Axis C++

  - by Harsha Reddy

  Hi, I am trying out the sample calculator program given in the folder of axis c++. I am mainly interested in the client side. So I used the wsdl to create the stubs and my main is pretty much the same as given in the sample. However on executing the call Calculator ws (endpoint) I get an unknown exception "First-chance exception at 0x7c0024b9 in CalculatorClient.exe: 0xC0000005: Access violation reading location 0x00000000. First-chance exception at 0x7c812afb in CalculatorClient.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000.. Unhandled exception at 0x7c0024b9 in CalculatorClient.exe: 0xC0000005: Access violation reading location 0x00000000." and the exception causing code is Calculator::Calculator(const char* pchEndpointUri, AXIS_PROTOCOL_TYPE eProtocol) :Stub(pchEndpointUri, eProtocol) { } I had earlier tried to run a a webservice using Axis C++ but had received the same error. At that time my web service was a java ws on WAS. Then I later tried the calculator client (but this time I did not have any server hosting the ws as I just wanted to check if the Client could initialize). Is the problem caused due to the web service not being hosted on Apache in C++ (though I highly doubt it). Any help would be appreciated. Thanks, Harsha

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• android bindservice

  - by mnish

  hi, I get null pointer exception at line mService.start() when i try to bind to an already started service. I do the same thing from different activity(where the service gets started) everythig goes right. All these activities are part of one application. What do you think I do wrong? public class RouteOnMap extends MapActivity{ private static final int NEW_LOCATION = 1; private static final int GPS_OFF = 2; private MapView mMapView; private ILocService mService; private boolean mServiceStarted; private boolean mBound; private Intent mServiceIntent; private double mLatitude, mLongitude; private ServiceConnection connection = new ServiceConnection() { public void onServiceConnected(ComponentName className, IBinder iservice) { mService = ILocService.Stub.asInterface(iservice); mBound = true; } public void onServiceDisconnected(ComponentName className) { mService = null; mBound = false; } }; public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.mapview); mMapView = (MapView) findViewById(R.id.mapview); mMapView.setBuiltInZoomControls(true); mServiceIntent = new Intent(); mLatitude = 0.0; mLongitude = 0.0; mBound = false; } @Override public void onStart(){ super.onStart(); mServiceIntent.setClass(this, LocationService.class); //startService(mServiceIntent); if(!mBound){ mBound = true; this.bindService(mServiceIntent, connection, Context.BIND_AUTO_CREATE); } } @Override public void onResume(){ super.onResume(); try { mService.start(); } catch (RemoteException e) { e.printStackTrace(); } } @Override public void onPause(){ super.onPause(); if(mBound){ this.unbindService(connection); } } @Override protected boolean isRouteDisplayed() { // TODO Auto-generated method stub return false; } }

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• Make an image transparent in IE to show non-transparent background

  - by Select0r

  Hi, I'm trying to get this thing to work in IE (any version - works in FF, Opera, Safari, Chrome ...): I have a DIV with a background-image. The DIV also contains an image that should be transparent onMouseOver. The expected behaviour now is that the DIV-background would shine through the transparent image (which it does in all browsers but IE). Instead it looks like the image is getting transparent but on a white background, I can't see the DIV's background through the image. Here's some code: <div><a href="#" class"dragItem"><img /></a></div> And some CSS: .dojoDndItemOver { cursor : pointer; filter : alpha(opacity = 50); opacity : 0.5; -moz-opacity : 0.5; -khtml-opacity : 0.5; } .dragItem:hover { filter : alpha(opacity = 30); opacity : 0.3; -moz-opacity : 0.3; -khtml-opacity : 0.3; background : none; } All of this is embedded in a Dojo Drag-n-Drop-system, so dojoDndItemOver will automatically be set to the DIV on MouseOver, dragItem is set to the href around the image (using the same class on the image directly doesn't work at all as IE doesn't support "hover" on other items that href). Any ideas? Or is it an IE-speciality to just "simulate" transparency on images by somehow just greying them out instead of providing real transparency and showing whatever is beneath?

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• Why doesn't my cursor change to an Hourglass in my FindDialog in Delphi?

  - by lkessler

  I am simply opening my FindDialog with: FindDialog.Execute; In my FindDialog.OnFind event, I want to change the cursor to an hourglass for searches through large files, which may take a few seconds. So in the OnFind event I do this: Screen.Cursor := crHourglass; (code that searches for the text and displays it) ... Screen.Cursor := crDefault; What happens is while searching for the text, the cursor properly changes to the hourglass (or rotating circle in Vista) and then back to the pointer when the search is completed. However, this only happens on the main form. It does not happen on the FindDialog itself. The default cursor remains on the FindDialog during the search. While the search is happening if I move the cursor over the FindDialog it changes to the default, and if I move it off and over the main form it becomes the hourglass. This does not seem like what is supposed to happen. Am I doing something wrong or does something special need to be done to get the cursor to be the hourglass on all forms? For reference, I'm using Delphi 2009.

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• Delphi - Is there a better way to get state abbreviations from state names

  - by Bill

  const states : array [0..49,0..1] of string = ( ('Alabama','AL'), ('Montana','MT'), ('Alaska','AK'), ('Nebraska','NE'), ('Arizona','AZ'), ('Nevada','NV'), ('Arkansas','AR'), ('New Hampshire','NH'), ('California','CA'), ('New Jersey','NJ'), ('Colorado','CO'), ('New Mexico','NM'), ('Connecticut','CT'), ('New York','NY'), ('Delaware','DE'), ('North Carolina','NC'), ('Florida','FL'), ('North Dakota','ND'), ('Georgia','GA'), ('Ohio','OH'), ('Hawaii','HI'), ('Oklahoma','OK'), ('Idaho','ID'), ('Oregon','OR'), ('Illinois','IL'), ('Pennsylvania','PA'), ('Indiana','IN'), ('Rhode Island','RI'), ('Iowa','IA'), ('South Carolin','SC'), ('Kansas','KS'), ('South Dakota','SD'), ('Kentucky','KY'), ('Tennessee','TN'), ('Louisiana','LA'), ('Texas','TX'), ('Maine','ME'), ('Utah','UT'), ('Maryland','MD'), ('Vermont','VT'), ('Massachusetts','MA'), ('Virginia','VA'), ('Michigan','MI'), ('Washington','WA'), ('Minnesota','MN'), ('West Virginia','WV'), ('Mississippi','MS'), ('Wisconsin','WI'), ('Missouri','MO'), ('Wyoming','WY') ); function getabb(state:string):string; var I:integer; begin for I := 0 to length(states) -1 do if lowercase(state) = lowercase(states[I,0]) then begin result:= states[I,1]; end; end; function getstate(state:string):string; var I:integer; begin for I := 0 to length(states) -1 do if lowercase(state) = lowercase(states[I,1]) then begin result:= states[I,0]; end; end; procedure TForm2.Button1Click(Sender: TObject); begin edit1.Text:=getabb(edit1.Text); end; procedure TForm2.Button2Click(Sender: TObject); begin edit1.Text:=getstate(edit1.Text); end; end. Is there a bette way to do this?

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• realloc() & ARC

  - by RynoB

  How would I be able to rewrite the the following utility class to get all the class string values for a specific type - using the objective-c runtime functions as shown below? The ARC documentation specifically states that realloc should be avoided and I also get the following compiler error on this this line: classList = realloc(classList, sizeof(Class) * numClasses); "Implicit conversion of a non-Objective-C pointer type 'void *' to '__unsafe_unretained Class *' is disallowed with ARC" The the below code is a reference to the original article which can be found here. + (NSArray *)classStringsForClassesOfType:(Class)filterType { int numClasses = 0, newNumClasses = objc_getClassList(NULL, 0); Class *classList = NULL; while (numClasses < newNumClasses) { numClasses = newNumClasses; classList = realloc(classList, sizeof(Class) * numClasses); newNumClasses = objc_getClassList(classList, numClasses); } NSMutableArray *classesArray = [NSMutableArray array]; for (int i = 0; i < numClasses; i++) { Class superClass = classList[i]; do { superClass = class_getSuperclass(superClass); if (superClass == filterType) { [classesArray addObject:NSStringFromClass(classList[i])]; break; } } while (superClass); } free(classList); return classesArray; } Your help will be much appreciated. Thanks

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• prompt error in jquery ui file

  - by phil

  I run the script in IE 8 and get error message after typing in the input field: //error message from IE8 Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.2) Timestamp: Mon, 7 Jun 2010 23:13:10 UTC Message: Object expected Line: 570 Char: 394 Code: 0 URI: http://localhost/zhong/jquery-ui-1.8.2.custom.min.js <script src="jquery-1.4.2.min.js"></script> <script src="jquery-ui-1.8.2.custom.min.js"></script> <link rel="stylesheet" type="text/css" href="jquery-ui-1.8.2.custom.css" /> <body> Search: <input id="example" /> </body> <script> $(document).ready(function(){ var data = "Core Selectors Attributes Traversing Manipulation CSS Events Effects Ajax Utilities".split(" "); $("#example").autocomplete(data); }); </script>

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• Linux Kernel - Red/Black Trees

  - by CodeRanger

  I'm trying to implement a red/black tree in Linux per task_struct using code from linux/rbtree.h. I can get a red/black tree inserting properly in a standalone space in the kernel such as a module but when I try to get the same code to function with the rb_root declared in either task_struct or task_struct-files_struct, I get a SEGFAULT everytime I try an insert. Here's some code: In task_struct I create a rb_root struct for my tree (not a pointer). In init_task.h, macro INIT_TASK(tsk), I set this equal to RB_ROOT. To do an insert, I use this code: rb_insert(&(current-fd_tree), &rbnode); This is where the issue occurs. My insert command is the standard insert that is documented in all RBTree documentation for the kernel: int my_insert(struct rb_root *root, struct mytype *data) { struct rb_node **new = &(root->rb_node), *parent = NULL; /* Figure out where to put new node */ while (*new) { struct mytype *this = container_of(*new, struct mytype, node); int result = strcmp(data->keystring, this->keystring); parent = *new; if (result < 0) new = &((*new)->rb_left); else if (result > 0) new = &((*new)->rb_right); else return FALSE; } /* Add new node and rebalance tree. */ rb_link_node(&data->node, parent, new); rb_insert_color(&data->node, root); return TRUE; } Is there something I'm missing? Some reason this would work fine if I made a tree root outside of task_struct? If I make rb_root inside of a module this insert works fine. But once I put the actual tree root in the task_struct or even in the task_struct-files_struct, I get a SEGFAULT. Can a root node not be added in these structs? Any tips are greatly appreciated. I've tried nearly everything I can think of.

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• How to parse kanji numeric characters using ICU?

  - by Aki

  I'm writing a function using ICU to parse an Unicode string which consists of kanji numeric character(s) and want to return the integer value of the string. "?" = 5 "???" = 31 "???????" = 5972 I'm setting the locale to Locale::getJapan() and using the NumberFormat::parse() to parse the character string. However, whenever I pass it any Kanji characters, the parse() method is returning U_INVALID_FORMAT_ERROR. Does anyone know if ICU supports Kanji character strings in the NumberFormat::parse() method? I was hoping that since I'm setting the Locale to Japanese that it would be able to parse Kanji numeric values. Thanks! #include <iostream> #include <unicode/numfmt.h> using namespace std; int main(int argc, char **argv) { const Locale &jaLocale = Locale::getJapan(); UErrorCode status = U_ZERO_ERROR; NumberFormat *nf = NumberFormat::createInstance(jaLocale, status); UChar number[] = {0x4E94}; // Character for '5' in Japanese '?' UnicodeString numStr(number); Formattable formattable; nf->parse(numStr, formattable, status); if (U_FAILURE(status)) { cout << "error parsing as number: " << u_errorName(status) << endl; return(1); } cout << "long value: " << formattable.getLong() << endl; }

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• AST with fixed nodes instead of error nodes in antlr

  - by ahe

  I have an antlr generated Java parser that uses the C target and it works quite well. The problem is I also want it to parse erroneous code and produce a meaningful AST. If I feed it a minimal Java class with one import after which a semicolon is missing it produces two "Tree Error Node" objects where the "import" token and the tokens for the imported class should be. But since it parses the following code correctly and produces the correct nodes for this code it must recover from the error by adding the semicolon or by resyncing. Is there a way to make antlr reflect this fixed input it produces internally in the AST? Or can I at least get the tokens/text that produced the "Tree Node Errors" somehow? In the C targets antlr3commontreeadaptor.c around line 200 the following fragment indicates that the C target only creates dummy error nodes so far: static pANTLR3_BASE_TREE errorNode (pANTLR3_BASE_TREE_ADAPTOR adaptor, pANTLR3_TOKEN_STREAM ctnstream, pANTLR3_COMMON_TOKEN startToken, pANTLR3_COMMON_TOKEN stopToken, pANTLR3_EXCEPTION e) { // Use the supplied common tree node stream to get another tree from the factory // TODO: Look at creating the erronode as in Java, but this is complicated by the // need to track and free the memory allocated to it, so for now, we just // want something in the tree that isn't a NULL pointer. // return adaptor->createTypeText(adaptor, ANTLR3_TOKEN_INVALID, (pANTLR3_UINT8)"Tree Error Node"); } Am I out of luck here and only the error nodes the Java target produces would allow me to retrieve the text of the erroneous nodes?

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• C# using consts in static classes

  - by NickLarsen

  I was plugging away on an open source project this past weekend when I ran into a bit of code that confused me to look up the usage in the C# specification. The code in questions is as follows: internal static class SomeStaticClass { private const int CommonlyUsedValue = 42; internal static string UseCommonlyUsedValue(...) { // some code value = CommonlyUsedValue + ...; return value.ToString(); } } I was caught off guard because this appears to be a non static field being used by a static function which some how compiled just fine in a static class! The specification states (§10.4): A constant-declaration may include a set of attributes (§17), a new modifier (§10.3.4), and a valid combination of the four access modifiers (§10.3.5). The attributes and modifiers apply to all of the members declared by the constant-declaration. Even though constants are considered static members, a constant-declaration neither requires nor allows a static modifier. It is an error for the same modifier to appear multiple times in a constant declaration. So now it makes a little more sense because constants are considered static members, but the rest of the sentence is a bit surprising to me. Why is it that a constant-declaration neither requires nor allows a static modifier? Admittedly I did not know the spec well enough for this to immediately make sense in the first place, but why was the decision made to not force constants to use the static modifier if they are considered constants? Looking at the last sentence in that paragraph, I cannot figure out if it is regarding the previous statement directly and there is some implicit static modifier on constants to begin with, or if it stands on its own as another rule for constants. Can anyone help me clear this up?

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• function's return address is different from its supposed value, buffer overflow,

  - by ultrajohn

  Good day everyone! I’m trying to understand how buffer overflow works. I’m doing this for my project in a computer security course I’m taking. Right now, I’m in the process of determining the address of the function’s return address which I’m supposed to change to perform a buffer overflow attack. I’ve written a simple program based from an example I’ve read in the internet. What this program does is it creates an integer pointer that will be made to point to the address of the function return address in the stack. To do this, (granted I understand how a function/program variables get organized in the stack), I add 8 to the buffer variable’ address and set it as the value of ret. I’m not doing anything here that would change the address contained in the location of func’s return address. here's the program: Output of the program when gets excecuted: As you can see, I’m printing the address of the variables buffer and ret. I’ve added an additional statement printing the value of the ret variable (supposed location of func return address, so this should print the address of the next instruction which will get executed after func returns from execution). Here is the dump which shows the supposed address of the instruction to be executed after func returns. (Underlined in green) As you can see, that value is way different from the value printed contained in the variable ret. My question is, why are they different? (of course in the assumption that what I’ve done are all right). Else, what have I done wrong? Is my understanding of the program’s runtime stack wrong? Please, help me understand this. My project is due nextweek and I’ve barely touched it yet. I’m sorry if I’m being demanding, I badly need your help.

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• Deriving an HTMLElement Object from jQuery Object

  - by Jasconius

  I'm doing a fairly exhaustive series of DOM manipulations where a few elements (specifically form elements) have some events. I am dynamically creating (actually cloning from a source element) several boxes and assigning a change() event to them. The change event executes, and within the context of the event, "this" is the HTML Element Object. What I need to do at this point however is determine a contact for this HTML Element Object. I have these objects stored already as jQuery entities in assorted arrays, but obviously [HTMLElement Object] != [Object Object] And the trick is that I cannot cast $(this) and make a valid comparison since that would create a new object and the pointer would be different. So... I've been banging my head against this for a while. In the past I've been able to circumvent this problem by doing an innerHTML comparison, but in this case the objects I am comparing are 100% identical, just there's lots of them. Therefore I need a solid comparison. This would be easy if I could somehow derive the HTMLElement object from my originating jQuery object. Thoughts, other ideas? Help. :(

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• Bad linking in Qt unit test -- missing the link to the moc file?

  - by dwj

  I'm trying to unit test a class that inherits QObject; the class itself is located up one level in my directory structure. When I build the unit test I get the standard unresolved errors if a class' MOC file cannot be found: test.obj : error LNK2001: unresolved external symbol "public: virtual void * __thiscall UnitToTest::qt_metacast(char const *)" (?qt_metacast@UnitToTest@@UAEPAXPBD@Z) + 2 missing functions The MOC file is created but appears to not be linking. I've been poking around SO, the web, and Qt's docs for quite a while and have hit a wall. How do I get the unit test to include the MOC file in the link? ==== My project file is dead simple: TEMPLATE = app TARGET = test DESTDIR = . CONFIG += qtestlib INCLUDEPATH += . .. DEPENDPATH += . HEADERS += test.h SOURCES += test.cpp ../UnitToTest.cpp stubs.cpp DEFINES += UNIT_TEST My directory structure and files: C:. | UnitToTest.cpp | UnitToTest.h | \---test | test.cpp (Makefiles removed for clarity) | test.h | test.pro | stubs.cpp | +---debug | UnitToTest.obj | test.obj | test.pdb | moc_test.cpp | moc_test.obj | stubs.obj Edit: Additional information The generated Makefile.Debug shows the moc file missing: SOURCES = test.cpp \ ..\test.cpp \ stubs.cpp debug\moc_test.cpp OBJECTS = debug\test.obj \ debug\UnitToTest.obj \ debug\stubs.obj \ debug\moc_test.obj

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• Exception during iteration on collection and remove items from that collection

  - by Muhammad Kashif Nadeem

  I remove item from ArrayList in foreach loop and get follwing exception. Collection was modified; enumeration operation may not execute. How can I remove items in foreach Following is my code: /* * Need to remove all items from 'attachementsFielPath' which does not exist in names array. */ try { string attachmentFileNames = txtAttachment.Text.Trim(); // Textbox having file names. string[] names = attachmentFileNames.Split(new char[] { ';' }); int index = 0; // attachmentsFilePath is ArrayList holding full path of fiels user selected at any time. foreach (var fullFilePath in attachmentsFilePath) { bool isNeedToRemove = true; // Extract filename from full path. string fileName = fullFilePath.ToString().Substring(fullFilePath.ToString().LastIndexOf('\\') + 1); for (int i = 0; i < names.Length; i++) { // If filename found in array then no need to check remaining items. if (fileName.Equals(names[i].Trim())) { isNeedToRemove = false; break; } } // If file not found in names array, remove it. if (isNeedToRemove) { attachmentsFilePath.RemoveAt(index); isNeedToRemove = true; } index++; } } catch (Exception ex) { throw ex; }

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• Locking a table for getting MAX in LINQ

  - by Hossein Margani

  Hi Every one! I have a query in LINQ, I want to get MAX of Code of my table and increase it and insert new record with new Code. just like the IDENTITY feature of SQL Server, but here my Code column is char(5) where can be alphabets and numeric. My problem is when inserting a new row, two concurrent processes get max and insert an equal Code to the record. my command is: var maxCode = db.Customers.Select(c=>c.Code).Max(); var anotherCustomer = db.Customers.Where(...).SingleOrDefault(); anotherCustomer.Code = GenerateNextCode(maxCode); db.SubmitChanges(); I ran this command cross 1000 threads and each updating 200 customers, and used a Transaction with IsolationLevel.Serializable, after two or three execution an error occured: using (var db = new DBModelDataContext()) { DbTransaction tran = null; try { db.Connection.Open(); tran = db.Connection.BeginTransaction(IsolationLevel.Serializable); db.Transaction = tran; . . . . tran.Commit(); } catch { tran.Rollback(); } finally { db.Connection.Close(); } } error: Transaction (Process ID 60) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. other IsolationLevels generates this error: Row not found or changed. Please help me, thank you.

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• Call dll - pcshll32.dll using delphi

  - by Davis

  Hi, I need to call hllapi function of pcshll32.dll using delphi. It's works with personal communications of ibm. How can i change the code bellow to delphi ? Thanks !!! The EHLLAPI entry point (hllapi) is always called with the following four parameters: EHLLAPI Function Number (input) Data Buffer (input/output) Buffer Length (input/output) Presentation Space Position (input); Return Code (output) The prototype for IBM Standard EHLLAPI is: [long hllapi (LPWORD, LPSTR, LPWORD, LPWORD); The prototype for IBM Enhanced EHLLAPI is: [long hllapi (LPINT, LPSTR, LPINT, LPINT); Each parameter is passed by reference not by value. Thus each parameter to the function call must be a pointer to the value, not the value itself. For example, the following is a correct example of calling the EHLLAPI Query Session Status function: #include "hapi_c.h" struct HLDQuerySessionStatus QueryData; int Func, Len, Rc; long Rc; memset(QueryData, 0, sizeof(QueryData)); // Init buffer QueryData.qsst_shortname = ©A©; // Session to query Func = HA_QUERY_SESSION_STATUS; // Function number Len = sizeof(QueryData); // Len of buffer Rc = 0; // Unused on input hllapi(&Func, (char *)&QueryData, &Len, &Rc); // Call EHLLAPI if (Rc != 0) { // Check return code // ...Error handling } All the parameters in the hllapi call are pointers and the return code of the EHLLAPI function is returned in the value of the 4th parameter, not as the value of the function.

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• Making a switch statement in C with an array?

  - by Eric

  I am trying to make a switch statement that takes in a word into an array and then throws each letter through a switch statement and allocates a point to each letter depending on which letter it is and giving a final point value for the word, and I can't seem to get the array part right. Any help would be appreciated! int main(){ int letter_points = 0; char word[7]; int word_length = 7; int i; printf("Enter a Word\n"); scanf("%s", word); for(i = 0; i < word_length; i++){ switch(word){ //1 point case 'A': case 'E': case 'I': case 'L': case 'N': case 'O': case 'R': case 'S': case 'T': case 'U': letter_points++; break; //2 points case 'D': case 'G': letter_points += 2; break; //3 points case 'B': case 'C': case 'M': case 'P': letter_points += 3; break; //4 points case 'F': case 'H': case 'V': case 'W': case 'Y': letter_points += 4; break; //5 points case 'K': letter_points += 5; break; //8 points case 'J': case 'X': letter_points += 8; break; //10 points case 'Q': case 'Z': letter_points += 10; break; } } printf("%d\n", letter_points); return; }

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• STLport crash (race condition, Darwin only?)

  - by Jonas Byström

  When I run STLport on Darwin I get a strange crash. (Haven't seen it anywhere else than on Mac, but exactly same thing crash on both i686 and PowerPC.) This is what it looks like in gdb: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: 13 at address: 0x0000000000000000 [Switching to process 21097] 0x000000010120f47c in stlp_std::__node_alloc_impl::_M_allocate () It may be some setting in STLport, I noticed that Mac.h and MacOSX.h seemed far behind on features. I also know that it it must be some type of race condition, since it doesn't occur just by calling this method (implicity called). The crash happens mainly when I push the system, running 10 simultaneous threads that do a lot of string handling. Other theories I come up with have to do with compiler flags (configure script) and g++ 4.2 bugs (seems like 4.4.3 isn't on Mac yet with Objective-C support, which I need to link with). HELP!!! :) Edit: I run unit tests, which do all sorts of things. This problem arise when I start 10 threads that push the system; and it always comes down to std::string::append which eventually boils down to _M_allocate. Since I can't even get a descent dump of the code that's causing the problem, I figure I'm doing something bad. Could it be so since it's trying to execute at instruction pointer 0x000...000? Are dynlibs built as DLLs in Windows with a jump table? Could it perhaps be that such a jump table has been overwritten for some reason? That would probably explain this behavior. (The code is huge, if I run out of other ideas, I'll post a minimum crashing sample here.)

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• Windows Programming: ID2D1Bitmap Interface - Getting the Bitmap Data

  - by LostInBrackets

  I've been writing my own library of functions to access some of the new Direct2D Windows libraries. In particular, I've been working on the ID2D1Bitmap interface. I wanted to write a function to return a pointer to the start of the bitmap data (for the editing of particular pixels, or custom encoding or whatever else I might wish for in the future). Unfortunately... problem ahead... I can't seem to find a way to get access to the raw pixel data from the ID2D1Bitmap Interface. Does anyone have an idea how to access this? One of my friends suggested drawing the bitmap to a surface and extracting the bitmap data from there. I don't know if this would work. It definitely seems inefficient and I wouldn't know which kind of surface to use. Any help is appreciated. (c++ in particular, but I assume the code won't be tooo different between languages) (I know I could just read in the data direct from the file, but I'm using the WIC decoders which means it could be in any number of indecipherable formats)

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• Debugging MinGW program with gdb on Windows, not terminating at assert failure

  - by devil

  How do I set up gdb on window so that it does not allow a program with assertion failure to terminate? I intend to check the stack trace and variables in the program. For example, running this test.cpp program compiled with MinGW 'g++ -g test.cpp -o test' in gdb: #include <cassert> int main(int argc, char ** argv) { assert(1==2); return 0; } Gives: $ gdb test.exe GNU gdb 6.8 Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-pc-mingw32"... (gdb) r Starting program: f:\code/test.exe [New thread 4616.0x1200] Error: dll starting at 0x77030000 not found. Error: dll starting at 0x75f80000 not found. Error: dll starting at 0x77030000 not found. Error: dll starting at 0x76f30000 not found. Assertion failed: 1==2, file test.cpp, line 2 This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Program exited with code 03. (gdb) I would like to be able to stop the program from terminating immediately, like how Visual Studio's debugger and gdb on Linux does it. I have done a search and found some stuff on trapping signals but I can't seem to find a good post on how to set up gdb to do this.

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