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  • Xap file contents changes if built in Visual Studio or build server

    - by arch
    I'm using MEF with my Silverlight 4 app to dynamically load xap files. To optimize this process, I've removed various assemblies from my xaps since I know they've already been loaded by the base xap. This reduces the size of my dynamically loaded xaps. I accomplished this by setting the "Copy Local" flag for each assembly reference to "false". This all seems to work fine when I build in Visual Studio 2010 - my xaps are much smaller. However, when the same projects are built by the build server, all the excluded references are once again in the xap file hence tripling the size of the xap. I've read several blogs/articles regarding similar experiences but no resolution. Very frustrating - any help is appreciated.

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  • Android USB Host Communication

    - by Kip Russell
    I'm working on a project that utilizes the USB Host capabilities in Android 3.2. I'm suffering from a deplorable lack of knowledge and talent regarding USB/Serial communication in general. I'm also unable to find any good example code for what I need to do. I need to read from a USB Communication Device. Ex: When I connect via Putty (on my PC) I enter: >GO And the device starts spewing out data for me. Pitch/Roll/Temp/Checksum. Ex: $R1.217P-0.986T26.3*60 $R1.217P-0.986T26.3*60 $R1.217P-0.987T26.3*61 $R1.217P-0.986T26.3*60 $R1.217P-0.985T26.3*63 I can send the initial 'GO' command from the Android device at which time I receive an echo of 'GO'. Then nothing else on any subsequent reads. How can I: 1) Send the 'go' command. 2) Read in the stream of data that results. The USB device I'm working with has the following interfaces (endpoints). Device Class: Communication Device (0x2) Interfaces: Interface #0 Class: Communication Device (0x2) Endpoint #0 Direction: Inbound (0x80) Type: Intrrupt (0x3) Poll Interval: 255 Max Packet Size: 32 Attributes: 000000011 Interface #1 Class: Communication Device Class (CDC) (0xa) Endpoint #0 Address: 129 Number: 1 Direction: Inbound (0x80) Type: Bulk (0x2) Poll Interval (0) Max Packet Size: 32 Attributes: 000000010 Endpoint #1 Address: 2 Number: 2 Direction: Outbound (0x0) Type: Bulk (0x2) Poll Interval (0) Max Packet Size: 32 Attributes: 000000010 I'm able to deal with permission, connect to the device, find the correct interface and assign the endpoints. I'm just having trouble figuring out which technique to use to send the initial command read the ensuing data. I'm tried different combinations of bulkTransfer and controlTransfer with no luck. Thanks. I'm using interface#1 as seen below: public AcmDevice(UsbDeviceConnection usbDeviceConnection, UsbInterface usbInterface) { Preconditions.checkState(usbDeviceConnection.claimInterface(usbInterface, true)); this.usbDeviceConnection = usbDeviceConnection; UsbEndpoint epOut = null; UsbEndpoint epIn = null; // look for our bulk endpoints for (int i = 0; i < usbInterface.getEndpointCount(); i++) { UsbEndpoint ep = usbInterface.getEndpoint(i); Log.d(TAG, "EP " + i + ": " + ep.getType()); if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK) { if (ep.getDirection() == UsbConstants.USB_DIR_OUT) { epOut = ep; } else if (ep.getDirection() == UsbConstants.USB_DIR_IN) { epIn = ep; } } } if (epOut == null || epIn == null) { throw new IllegalArgumentException("Not all endpoints found."); } AcmReader acmReader = new AcmReader(usbDeviceConnection, epIn); AcmWriter acmWriter = new AcmWriter(usbDeviceConnection, epOut); reader = new BufferedReader(acmReader); writer = new BufferedWriter(acmWriter); }

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  • How CudaMalloc work?

    - by kitw
    I am trying to modify the imageDenosing class in CUDA SDK, I need to repeat the filter many time incase to capture the time. But my code doesn't work properly. //start __global__ void F1D(TColor *image,int imageW,int imageH, TColor *buffer) { const int ix = blockDim.x * blockIdx.x + threadIdx.x; const int iy = blockDim.y * blockIdx.y + threadIdx.y; if(iy != 0 && iy < imageH-1 && ix < imageW) { float4 fresult = get_color(image[imageW * iy + ix]); float4 fresult4 = get_color(image[imageW * (iy+1) + ix]); float4 fresult5 = get_color(image[imageW * (iy-1) + ix]); float4 fresult7; fresult7.x = fresult.x*0.5+fresult4.x*.25+fresult5.x*.25; fresult7.y = fresult.y*0.5+fresult4.y*.25+fresult5.y*.25; fresult7.z = fresult.z*0.5+fresult4.z*.25+fresult5.z*.25; buffer[imageW * iy + ix] = make_color(fresult7.x,fresult7.y,fresult7.z,0); } image[imageW * iy + ix] = buffer[imageW * iy + ix]; //should be use cudaMemcpy, But it fails } //extern extern "C" void cuda_F1D(TColor *dst, int imageW, int imageH) { dim3 threads(BLOCKDIM_X, BLOCKDIM_Y); dim3 grid(iDivUp(imageW, BLOCKDIM_X), iDivUp(imageH, BLOCKDIM_Y)); Copy<<<grid, threads>>>(dst, imageW, imageH); size_t size = imageW*imageH*sizeof(TColor); TColor *host =(TColor*) malloc(size); TColor *dst2; //TColor *dst3; //TColor *d = new TColor(imageW*imageH*sizeof(TColor)); dim3 threads2(imageW,1); dim3 grid2(iDivUp(imageW, imageW), iDivUp(imageH, 1)); *for(int i = 0;i<1;i++) { cudaMalloc( (void **)&dst2, size); cudaMemcpy(dst2, dst, imageW*imageH*sizeof(TColor),cudaMemcpyHostToDevice); //cudaMalloc( (void **)&dst3, imageW*imageH*sizeof(TColor)); //cudaMemcpy(dst3, dst, imageW*imageH*sizeof(TColor),cudaMemcpyHostToDevice); F1D<<<grid2, threads2>>>(dst, imageW, imageH,dst2); //cudaMemcpy(dst, dst3, imageW*imageH*sizeof(TColor),cudaMemcpyDeviceToHost); cudaFree(dst2); }* } This code works, but cant synchronise the array of image. and lead to many synchronise problem

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  • Synchronisation construct inside pragma for

    - by Sayan Ghosh
    Hi, I have a program block like: for (iIndex1=0; iIndex1 < iSize; iIndex1++) { for (iIndex2=iIndex1+1; iIndex2 < iSize; iIndex2++) { iCount++; fDist =(*this)[iIndex1].distance( (*this)[iIndex2] ); m_oPDF.addPairDistance( fDist ); if ((bShowProgress) && (iCount % 1000000 == 0)) xyz_exception::ui()->progress( iCount, (size()-1)*((size()-1))/2 ); } } } } I have tried parallelising the inner and outer loop and by putting iCount in a critical region. What would be the best approach to parallelise this? If I wrap iCount with omp single or omp atomic then the code gives an error and I figured out that would be invalid inside omp for. I guess I am adding many extraneous stuffs to paralellise this. Need some advice... Thanks, Sayan

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  • Code to show UIPickerview under clicked UITextField

    - by Chris F
    I thought I'd share a code snippet where I show a UIPickerView when you click a UITextField. The code uses a UIPickerView, but there's no reason to use a different view controller, like a UITableViewController that uses a table instead of a picker. Just create a single-view project with a nib, and add a UITextField to the view and make you connections in IB. // .h file #import @interface MyPickerViewViewController : UIViewController <UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate> - (IBAction)dismissPickerView:(id)sender; @end // .m file #import "MyPickerViewViewController.h" @interface MyPickerViewViewController () { UIPickerView *_pv; NSArray *_array; IBOutlet __weak UITextField *_tf; BOOL _pickerViewShown; } @end @implementation MyPickerViewViewController - (void)viewDidLoad { [super viewDidLoad]; _pickerViewShown = NO; _array = [NSArray arrayWithObjects:@"One", @"Two", @"Three", @"Four", nil]; _pv = [[UIPickerView alloc] initWithFrame:CGRectZero]; _pv.showsSelectionIndicator = YES; _pv.dataSource = self; _pv.delegate = self; _tf.delegate = self; _tf.inputView = _pv; } - (IBAction)dismissPickerView:(id)sender { [_pv removeFromSuperview]; [_tf.inputView removeFromSuperview]; [_tf resignFirstResponder]; _pickerViewShown = NO; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField { if (!_pickerViewShown) { [self setRectForPickerViewRelativeToTextField:textField]; [self.view addSubview:_tf.inputView]; _pickerViewShown = YES; } else { [self dismissPickerView:self]; } return NO; } - (void)setRectForPickerViewRelativeToTextField:(UITextField*)textField { CGFloat xPos = textField.frame.origin.x; CGFloat yPos = textField.frame.origin.y; CGFloat width = textField.frame.size.width; CGFloat height = textField.frame.size.height; CGFloat pvHeight = _pv.frame.size.height; CGRect pvRect = CGRectMake(xPos, yPos+height, width, pvHeight); _pv.frame = pvRect; } - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { return [_array objectAtIndex:row]; } - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView { return 1; } - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component { return _array.count; } - (void) pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { _tf.text = [_array objectAtIndex:row]; [self dismissPickerView:self]; } @end

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  • Visual Editor vs Manual code

    - by Albinoswordfish
    I'm not sure how it is using other frameworks but this questions is strictly regarding Java swing. Is it better to use a Visual Editor to place objects or to manually code the placement of the objects onto the frame (Layout managers or null layouts)? From my experience I've had a lot of trouble using Visual editors when it comes to different screen resolutions or changing the window size. Using manual code to place objects I've found that my GUIs behave a lot better with regard to the screen size issue. However when I want to change a small part of my GUI it takes a lot more work compared to using a visual editor Just wondering what people's thoughts were on this?

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  • Scaling an Image in GWT

    - by Daniel
    Changing the size of an Image Widget in GWT changes the size of the image element, but does not rescale the image on the screen. Therefore, the following will not work: Image image = new Image(myImageResource); image.setHeight(newHeight); image.setWidth(newWidth); image.setPixelSize(newWidth, newHeight); This is because GWT implements its Image widget by setting the background-image of the HTML <img... /> element as the image, using CSS. How does one get the actual image to resize?

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  • How to load the rest of the data in mysql in php

    - by user225269
    I have trouble figuring out how do I load the rest of the data in html. Here is my code: <?php $con = mysql_connect("localhost","root","nitoryolai123$%^"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("school", $con); $result = mysql_query("SELECT * FROM student WHERE IDNO='$_GET['id']'"); ?> <?php while ( $row = mysql_fetch_array($result) ) { ?> <table class="a" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#D3D3D3"> <tr> <form name="formcheck" method="post" action="updateact.php" onsubmit="return formCheck(this);"> <td> <table border="0" cellpadding="3" cellspacing="1" bgcolor=""> <tr> <td colspan="16" height="25" style="background:#5C915C; color:white; border:white 1px solid; text-align: left"><strong><font size="2">Update Students</td> <tr> <td width="30" height="35"><font size="2">*I D Number:</td> <td width="30"><input name="idnum" onkeypress="return isNumberKey(event)" type="text" maxlength="5" id='numbers'/ value="<?php echo $_GET['id']; ?>"></td> </tr> <tr> <td width="30" height="35"><font size="2">*Year:</td> <td width="30"><input name="yr" onkeypress="return isNumberKey(event)" type="text" maxlength="5" id='numbers'/ value="<?php echo $row["YEAR"]; ?>"></td> this is the part where I am getting the error: mysql_select_db("school", $con); $result = mysql_query("SELECT * FROM student WHERE IDNO='$_GET['id']'"); ? What do you recommend that I could do so that I can also load the ID Numbers corresponding data into the other forms?

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  • How to sort a Ruby Hash by number value?

    - by dustmoo
    Hi everyone, I have a counter hash that I am trying to sort by count. The problem I am running into is that the default Hash.sort function sorts numbers like strings rather than by number size. i.e. Given Hash: metrics = {"sitea.com" => 745, "siteb.com" => 9, "sitec.com" => 10 } Running this code: metrics.sort {|a1,a2| a2[1]<=>a1[1]} will return a sorted array: [ 'siteb.com', 9, 'sitea.com', 745, 'sitec.com', 10] Even though 745 is a larger number than 9, 9 will appear first in the list. When trying to show who has the top count, this is making my life difficult. :) Any ideas on how to sort a hash (or an array even) by number value size? I appreciate any help.

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  • Find subset with K elements that are closest to eachother

    - by Nima
    Given an array of integers size N, how can you efficiently find a subset of size K with elements that are closest to each other? Let the closeness for a subset (x1,x2,x3,..xk) be defined as: 2 <= N <= 10^5 2 <= K <= N constraints: Array may contain duplicates and is not guaranteed to be sorted. My brute force solution is very slow for large N, and it doesn't check if there's more than 1 solution: N = input() K = input() assert 2 <= N <= 10**5 assert 2 <= K <= N a = [] for i in xrange(0, N): a.append(input()) a.sort() minimum = sys.maxint startindex = 0 for i in xrange(0,N-K+1): last = i + K tmp = 0 for j in xrange(i, last): for l in xrange(j+1, last): tmp += abs(a[j]-a[l]) if(tmp > minimum): break if(tmp < minimum): minimum = tmp startindex = i #end index = startindex + K? Examples: N = 7 K = 3 array = [10,100,300,200,1000,20,30] result = [10,20,30] N = 10 K = 4 array = [1,2,3,4,10,20,30,40,100,200] result = [1,2,3,4]

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  • AsyncListViewAdapter + SimplePager, why is inactive pager clearing the table?

    - by Jaroslav Záruba
    I'm trying to make CellTable work together with AsyncListViewAdapter<T> and SimplePager<T>. The data gets displayed, but when the pager should be 'deaf' (meaning when all existing data are displayed) it still receives clicks and, more importantly, makes the displayed data go away. Instead of my data 'loading' indicator gets displayed, and it keep loading and loading... Obviously nothing gets loaded, as it doesn't even call the onRangeChanged handler. I went through the code-snippets in this thread, but I can't see anything suspicions on what I've been doing. Is there some obvious answer to a rookie mistake? I shrinked my variable names, hopefully it won't wrap too much. protected class MyAsyncAdapter extends AsyncListViewAdapter<DTO> { @Override protected void onRangeChanged(ListView<DTO> v) { /* * doesn't even get called on [go2start/go2end] click :( */ Range r = v.getRange(); fetchData(r.getStart(), r.getLength()); } } private void addTable() { // table: CellTable<DTO> table = new CellTable<DTO>(10); table.addColumn(new Column<DTO, String>(new TextCell()) { @Override public String getValue(DTO myDto) { return myDto.getName(); } }, "Name"); // pager: SimplePager<DTO> pager = new SimplePager<DTO>(table); table.setPager(pager); adapter = new MyAsyncAdapter(); adapter.addView(table); // does not make any difference: // adapter.updateDataSize(0, false); // adapter.updateDataSize(10, true); VerticalPanel vPanel = new VerticalPanel(); vPanel.add(table); vPanel.add(pager); RootLayoutPanel.get().add(vPanel); } // success-handler of my fetching AsyncCallback @Override public void onSuccess(List<DTO> data) { // AsyncCallback<List<DTO>> has start field adapter.updateViewData(start, data.size(), data); if(data.size() < length) adapter.updateDataSize(start + data.size(), true); } Regards J. Záruba

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  • Javascript AJAX function not working in IE?

    - by Sam152
    I have this code: function render_message(id) { var xmlHttp; xmlHttp=new XMLHttpRequest(); xmlHttp.onreadystatechange=function() { if(xmlHttp.readyState==4) { document.getElementById('message').innerHTML=xmlHttp.responseText; document.getElementById('message').style.display=''; } } var url="include/javascript/message.php"; url=url+"?q="+id; xmlHttp.open("GET",url,true); xmlHttp.send(null); } For some reason it does not work in IE and an error is being reported on this line "document.getElementById('message').innerHTML=xmlHttp.responseText;" with an "Unknown Runtime Error". Can anyone help? Edit: The code being added to the div is valid code ect. Here is the response: <div style="margin-left:auto;margin-right:auto;width:400px;"> <img src="/forum/img/avatars/2.gif" width="90" height="89" style="float:left;"> <div style="margin-left:100px;"> <span style="font-size:16pt;">Sam152</a></span><br> <span style="font-size:10pt;text-transform:uppercase;font-weight:bold;">From Sam152</span><br> <span style="font-size:10pt;font-weight:bold;">Recieved April 17, 2009, 9:44 am</span><br> <br><br> </div> </div> <div style="margin-left:auto;margin-right:auto;width:400px;"> asd</div> <div style="margin-left:auto;margin-right:auto;width:400px;text-align:right;padding-top:10px;"> <span onClick="requestPage('http://www.gametard.com/include/scripts/delete_message.php?id=14');document.getElementById('message14').style.display='none';document.getElementById('message').style.display='none';" class="button">Delete</span> <span onClick="document.getElementById('message').style.display='none';" class="button">Close</span> <span onClick="document.getElementById('to').value ='Sam152';document.getElementById('to').style.color ='#000';document.getElementById('newmessage').style.display='';" class="button">Reply</span> </div>

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  • When is it good to start using project management applications?

    - by Mr.Gando
    Hello, I was wondering, when is the right time or the correct project size to start using project management applications ( like Redmine or Trac ). I have a serious project, for now it's only me developing, but I use redmine to set my project versions, issues, and estimations. I think it's a good idea, because you never know when somebody else is going to join the team, and also allows me to organize myself effectively. I ask this question because I was Teaching Assistant at my university for one year in a row for a course, and I got questions about this very very often. While I'm a believer of the KISS principle, I think that learning to use this tools early is a win-win most of the time. I really believe that we can avoid this question to become argumentative, and that there's somewhat of a consensus about this issue, which I consider quite important in todays software development world. So, when is the right time ? what is the correct project/team size ?

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  • Exception on malloc for a structure in C

    - by Derek
    Hi all, I have a structure defined like so: typedef struct { int n; int *n_p; void **list_pp; size_t rec_size; int n_buffs; size_t buff_size } fl_hdr_type; and in my code I Have a function for initlialization that has the following fl_hdr_type *fl_hdr; fl_hdr = malloc(sizeof(fl_hdr_type) + (buff_size_n * rec_size_n)); where those buffer size are passed in to the function to allow space for the buffers as well. The size is pretty small typically..100*50 or something like that..plenty of memory on this system to allocate it. Any ideas why this fails?

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  • filter that uses elements from two arrays at the same time

    - by Gacek
    Let's assume we have two arrays of the same size - A and B. Now, we need a filter that, for a given mask size, selects elements from A, but removes the central element of the mask, and inserts there corresponding element from B. So the 3x3 "pseudo mask" will look similar to this: A A A A B A A A A Doing something like this for averaging filter is quite simple. We can compute the mean value for elements from A without the central element, and then combine it with a proper proportion with elements from B: h = ones(3,3); h(2,2) =0; h = h/sum(h(:)); A_ave = filter2(h, A); C = (8/9) * A_ave + (1/9) * B; But how to do something similar for median filter (medfilt2 or even better for ordfilt2)

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  • P/Invoke a Function Passed a StringBuilder

    - by andrew
    in a C# file i have a class Archiver { [DllImport("Archiver.dll")] public static extern void archive(string data, StringBuilder response); } string data is an input, and StringBuilder response is where the function writes something the archive function prototype (written in C) looks like this: void archive(char * dataChr, char * outChr); and it receives a string in dataChr, and then does a strcpy(outChr,"some big text"); from C# i call it something like this: string message = "some text here"; StringBuilder response = new StringBuilder(10000); Archiver.archive(message,response); this works, but the problem, as you might see is that i give a value to the StringBuilder size, but the archive function might give back a (way) larger text than the size i've given to my StringBuilder. any way to fix this?

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  • tcpdf - HTML table showing up way too small

    - by LinuxGnut
    Hi folks. I'm using tcpdf (http://www.tcpdf.org/) to generate PDFs of some tables and images. The images are loaded without an issue, but I'm having issues with the writeHTML() function. I can't seem to control the font sizes or table width/height through the HTML, so I end up with a tiny, tiny, tiny table that you have to print of and squint at to even attempt reading. I've tried editing the table itself, CSS, even putting the table itself inside an h1, but nothing is changing the font size. I have the font size in tcpdf set to 16, but this also has no affect. Has anyone else run into this issue?

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  • MongoDB RSS Feed Entries, Embed the Entries in the Feed Object?

    - by Patrick Klingemann
    I am saving a reference to an RSS Feed in MongoDB, each Feed has an ever growing list of Entries. As I'm designing my schema, I'm concerned about this statement from the MongoDB Schema Design - Embed vs. Reference Documentation: If the amount of data to embed is huge (many megabytes), you may read the limit on size of a single object. This will surely happen if I understand the statement correctly. So the question is, I am correct to assume that I should not embed the Feed Entries within a Feed because I'll eventually reach the limit on size of a single object?

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  • How to set header font style as bold for the header of the table in a pdf file, in jsf

    - by Radhika
    Hi I have used PdfPTable to convert table data into a pdf file using com.itextpdf.text.pdf.PdfPTable. Table is displaying, but table data and the header are in same style. To make difference i have to set the header font style to bold. can anybody help me out in this, I have attached my code here.. Thanks in advance import java.awt.Color; import java.util.ArrayList; import java.util.List; import javax.faces.model.ListDataModel; import com.mypackage.core.filter.domainobject.FilterResultDO; import com.itextpdf.text.Font; import com.itextpdf.text.FontFactory; import com.itextpdf.text.Phrase; import com.itextpdf.text.pdf.PdfPTable; public class PDFGenerator { //This method will generate PDF for Filter Result Screen (only DataTable level) @SuppressWarnings("unchecked") public static PdfPTable generatePDF(PdfPTable table,List filterResultDOList ,List filterResultHeaderList ) { //Initialize the table with number of columns required for the Datatable header int numberOfFilterLabelCols = filterResultHeaderList.size(); //PDF Table Frame table = new PdfPTable(numberOfFilterLabelCols); //Getting Filter Detail Table Heading for(int i = 0 ; i < numberOfFilterLabelCols; i++) { ColumnHeader commandHeaderObj = filterResultHeaderList.get(i); table.addCell(commandHeaderObj.getLabel()); } //Getting Filter Detail Data (Rows X Cols) FilterResultDO filterResultDOObj = filterResultDOList.get(0); List filterResultDataList = filterResultDOObj.getFilterResultLst(); int numberOfFilterDataRows = filterResultDataList.size(); //each row iteration for(int row = 0; row < numberOfFilterDataRows; row++) { List filterResultCols = filterResultDataList.get(row); int numberOfFilterDataCols = filterResultCols.size(); //columns iteration of each row for(int col = 0; col < numberOfFilterDataCols ; col++) { String filterColumnsValues = (String) filterResultCols.get(col); table.addCell(filterColumnsValues); } } return table; }//generatePDF }

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  • Hide buttons when making a screenshot UIGraphicsBeginImageContextWithOptions

    - by Jan
    is there a way to hide specific buttons (IBAction) when making a screenshot with UIGraphicsBeginImageContextWithOptions ? I'm using the code below: // Define the dimensions of the screenshot you want to take (the entire screen in this case) UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *sourceImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); //now we will position the image, X/Y away from top left corner to get the portion we want UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0); [sourceImage drawAtPoint:CGPointMake(0, -20)]; UIImage *croppedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageWriteToSavedPhotosAlbum(croppedImage,nil, nil, nil); Thank you for your answer!

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  • [Sql-Server]what data type to use for password salt and hash values and what length?

    - by Pandiya Chendur
    I am generating salt and hash values from my passwords by using, string salt = CreateSalt(TxtPassword.Text.Length); string hash = CreatePasswordHash(TxtPassword.Text, salt); private static string CreateSalt(int size) { //Generate a cryptographic random number. RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider(); byte[] buff = new byte[size]; rng.GetBytes(buff); // Return a Base64 string representation of the random number. return Convert.ToBase64String(buff); } private static string CreatePasswordHash(string pwd, string salt) { string saltAndPwd = String.Concat(pwd, salt); string hashedPwd = FormsAuthentication.HashPasswordForStoringInConfigFile( saltAndPwd, "sha1"); return hashedPwd; } What datatype you would suggest for storing these values in sql server? Any suggestion... Salt:9GsPWpFD Hash:E778AF0DC5F2953A00B35B35D80F6262CDBB8567

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  • can these templates be made unambiguous

    - by R Samuel Klatchko
    I'm trying to create a set of overloaded templates for arrays/pointers where one template will be used when the compiler knows the size of the array and the other template will be used when it doesn't: template <typename T, size_t SZ> void moo(T (&arr)[SZ]) { ... } template <typename T> void moo(T *ptr) { ... } The problem is that when the compiler knows the size of the array, the overloads are ambiguous and the compile fails. Is there some way to resolve the ambiguity (perhaps via SFINAE) or is this just not possible.

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  • How to retain canvas state and use it in onDraw() method

    - by marqss
    I want to make a measure tape component for my app. It should look something like this with values from 0cm to 1000cm: Initially I created long bitmap image with repeated tape background. I drew that image to canvas in onDraw() method of my TapeView (extended ImageView). Then I drew a set of numbers with drawText() on top of the canvas. public TapeView(Context context, AttributeSet attrs){ ImageView imageView = new ImageView(mContext); LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT); imageView.setLayoutParams(params); mBitmap = createTapeBitmap(); imageView.setImageBitmap(mBitmap); this.addView(imageView); } private Bitmap createTapeBitmap(){ Bitmap mBitmap = Bitmap.createBitmap(5000, 100, Config.ARGB_8888); //size of the tape Bitmap tape = BitmapFactory.decodeResource(getResources(),R.drawable.tape);//the image size is 100x100px Bitmap scaledTape = Bitmap.createScaledBitmap(tape, 100, 100, false); Canvas c = new Canvas(mBitmap); Paint paint = new Paint(); paint.setColor(Color.WHITE); paint.setFakeBoldText(true); paint.setAntiAlias(true); paint.setTextSize(30); for(int i=0; i<=500; i++){ //draw background image c.drawBitmap(scaledTape,(i * 200), 0, null); //draw number in the middle of that background String text = String.valueOf(i); int textWidth = (int) paint.measureText(text); int position = (i * 100) + 100 - (textWidth / 2); c.drawText(text, position, 20, paint); } return mBitmap; } Finally I added this view to HorizontalScrollView. At the beginning everything worked beautifully but I realised that the app uses a Lot of memory and sometimes crashed with OutOfMemory exception. It was obvious because a size of the bitmap image was ~4mb! In order to increase the performance, instead of creating the bitmap I use Drawable (with the yellow tape strip) and set the tile mode to REPEAT: setTileModeX(TileMode.REPEAT); The view now is very light but I cannot figure out how to add numbers. There are too many of them to redraw them each time the onDraw method is called. Is there any way that I can draw these numbers on canvas and then save that canvas so it can be reused in onDraw() method?

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