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  • SQLite Modify Column

    - by Nathan
    I need to modify a column in a SQLite database but I have to do it programatically due to the database already being in production. From my research I have found that in order to do this I must do the following. Create a new table with new schema Copy data from old table to new table Drop old table Rename new table to old tables name That seems like a ridiculous amount of work for something that should be relatively easy. Is there not an easier way? All I need to do is change a constraint on a existing column and give it a default value.

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  • Arguments On a Console eMbedded Visual C++ Application

    - by Nathan Campos
    I'm trying to develop a simple application that will read some files, targeted for Windows CE. For this I'm using Microsoft eMbedded Visual C++ 3. This program(that is for console) will be called like this: /Storage Card/Test coms file.cmss As you can see, file.cmss is the first argument, but on my main I have a condition to show the help(the normal, how to use the program) if the arguments are smaller than 2: if(argc < 2) { showhelp(); return 0; } But when I execute the program on the command-line of Windows CE(using all the necessary arguments) I got the showHelp() content. Then I've checked all the code, but it's entirelly correct. But I think that eVC++ don't use argc and argv[] for arguments, then I want some help on how to determine the arguments on it.

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  • Linux Browsers And VBScript

    - by Nathan Campos
    I've already done some little things using Visual Basic and some nice things with eMbedded Visual Basic, but now I want to go on the scripting way, then I want to know if Linux, BeOS and other OSes browsers will support VBScript pages.

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  • PNGException "crc corruption" when attempting to create ImageIcon objects from ZIP archive

    - by Nathan Strong
    I've got a ZIP file containing a number of PNG images that I am trying to load into my Java application as ImageIcon resources directly from the archive. Here's my code: import java.io.*; import java.util.Enumeration; import java.util.zip.*; import javax.swing.ImageIcon; public class Test { public static void main( String[] args ) { if( args.length == 0 ) { System.out.println("usage: java Test.java file.zip"); return; } File archive = new File( args[0] ); if( !archive.exists() || !archive.canRead() ) { System.err.printf("Unable to find/access %s.\n", archive); return; } try { ZipFile zip = new ZipFile(archive); Enumeration <? extends ZipEntry>e = zip.entries(); while( e.hasMoreElements() ) { ZipEntry entry = (ZipEntry) e.nextElement(); int size = (int) entry.getSize(); int count = (size % 1024 == 0) ? size / 1024 : (size / 1024)+1; int offset = 0; int nread, toRead; byte[] buffer = new byte[size]; for( int i = 0; i < count; i++ ) { offset = 1024*i; toRead = (size-offset > 1024) ? 1024 : size-offset; nread = zip.getInputStream(entry).read(buffer, offset, toRead); } ImageIcon icon = new ImageIcon(buffer); // boom -- why? } zip.close(); } catch( IOException ex ) { System.err.println(ex.getMessage()); } } } The sizes reported by entry.getSize() match the uncompressed size of the PNG files, and I am able to read the data out of the archive without any exceptions, but the creation of the ImageIcon blows up. The stacktrace: sun.awt.image.PNGImageDecoder$PNGException: crc corruption at sun.awt.image.PNGImageDecoder.getChunk(PNGImageDecoder.java:699) at sun.awt.image.PNGImageDecoder.getData(PNGImageDecoder.java:707) at sun.awt.image.PNGImageDecoder.produceImage(PNGImageDecoder.java:234) at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:246) at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172) at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136) sun.awt.image.PNGImageDecoder$PNGException: crc corruption at sun.awt.image.PNGImageDecoder.getChunk(PNGImageDecoder.java:699) at sun.awt.image.PNGImageDecoder.getData(PNGImageDecoder.java:707) at sun.awt.image.PNGImageDecoder.produceImage(PNGImageDecoder.java:234) at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:246) at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172) at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136) Can anyone shed some light on it? Google hasn't turned up any useful information.

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  • No Binary File Generation

    - by Nathan Campos
    I've just bought a new laptop for me on the travel, then on my free time, I've started to test MinGW on it by trying to compile my own OS that is written in C++, then I've created all the files needed and the kernel.cpp: extern "C" void _main(struct multiboot_data* mbd, unsigned int magic); void _main( struct multiboot_data* mbd, unsigned int magic ) { char * boot_loader_name =(char*) ((long*)mbd)[16]; /* Print a letter to screen to see everything is working: */ unsigned char *videoram = (unsigned char *) 0xb8000; videoram[0] = 65; /* character 'A' */ videoram[1] = 0x07; /* forground, background color. */ } And tried to compile it with g++ G: g++ -o C:\kernel.o -c kernel.cpp -Wall -Wextra -Werror -nostdlib -nostartfiles -nodefaultlibs kernel.cpp: In function `void _main(multiboot_data*, unsigned int)': kernel.cpp:8: warning: unused variable 'boot_loader_name' kernel.cpp: At global scope: kernel.cpp:4: warning: unused parameter 'magic' G: But it don't create any binary file at C:/, what can I do?

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  • Video Synthesis - Making waves, pattern, gradients...

    - by Nathan
    I'm writing a program to generate some trippy visuals. My code paints each pixel with a random blue value which loops at 0.04 second intervals. for (y = 0; y < 5.5; y += 0.2) { for (x = 0; x < 7.5; x += 0.2) { b = rand() / ((double) RAND_MAX); setPixelColor(x,y,r,g,b); } } I'd like to do more than just make blue noise... but my maths is a bit rusty, and Google isn't helping me much today, so it would be great if you could share anything you know about making waves, patterns, gradient animations, etc or links to such material.

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  • running shell commands with gnu clisp

    - by Paul Nathan
    I'm trying to create a "system" command for clisp that works like this (setq result (system "pwd")) ;;now result is equal to /my/path/here I have something like this: (defun system (cmd) (ext:run-program :output :stream)) But, I am not sure how to transform a stream into a string. I've reviewed the hyperspec and google more than a few times.

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  • How can I force asp.net webapi to always decode POST data as JSON

    - by Nathan Reed
    I getting some json data posted to my asp.net webapi, but the post parameter is always coming up null - the data is not being serialized correctly. The method looks something like this: public HttpResponseMessage Post(string id, RegistrationData registerData) It seems the problem is that the client (which I have no control over) is always sending the content-type as x-www-form-urlencoded, even though the content is actually json. This causes mvc to try to deserialize as form data, which fails. Is there anyway to get webapi to always deserialize as json, and to ignore the content-type header?

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  • How to make a custom NSFormatter work correctly on Snow Leopard?

    - by Nathan
    I have a custom NSFormatter attached to several NSTextFields who's only purpose is to uppercase the characters as they are typed into field. The entire code for my formatter is included below. The stringForObjectValue() and getObjectValue() implementations are no-ops and taken pretty much directly out of Apple's documentation. I'm using the isPartialStringValid() method to return an uppercase version of the string. This code works correctly in 10.4 and 10.5. When I run it on 10.6, I get "strange" behaviour where text fields aren't always render the characters that are typed and sometimes are just displaying garbage. I've tried enabling NSZombie detection and running under Instruments but nothing was reported. I see errors like the following in "Console": HIToolbox: ignoring exception '*** -[NSCFString replaceCharactersInRange:withString:]: Range or index out of bounds' that raised inside Carbon event dispatch ( 0 CoreFoundation 0x917ca58a __raiseError + 410 1 libobjc.A.dylib 0x94581f49 objc_exception_throw + 56 2 CoreFoundation 0x917ca2b8 +[NSException raise:format:arguments:] + 136 3 CoreFoundation 0x917ca22a +[NSException raise:format:] + 58 4 Foundation 0x9140f528 mutateError + 218 5 AppKit 0x9563803a -[NSCell textView:shouldChangeTextInRange:replacementString:] + 852 6 AppKit 0x95636cf1 -[NSTextView(NSSharing) shouldChangeTextInRanges:replacementStrings:] + 1276 7 AppKit 0x95635704 -[NSTextView insertText:replacementRange:] + 667 8 AppKit 0x956333bb -[NSTextInputContext handleTSMEvent:] + 2657 9 AppKit 0x95632949 _NSTSMEventHandler + 209 10 HIToolbox 0x93379129 _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1567 11 HIToolbox 0x933783f0 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 411 12 HIToolbox 0x9339aa81 SendEventToEventTarget + 52 13 HIToolbox 0x933fc952 SendTSMEvent + 82 14 HIToolbox 0x933fc2cf SendUnicodeTextAEToUnicodeDoc + 700 15 HIToolbox 0x933fbed9 TSMKeyEvent + 998 16 HIToolbox 0x933ecede TSMProcessRawKeyEvent + 2515 17 AppKit 0x95632228 -[NSTextInputContext handleEvent:] + 1453 18 AppKit 0x9562e088 -[NSView interpretKeyEvents:] + 209 19 AppKit 0x95631b45 -[NSTextView keyDown:] + 751 20 AppKit 0x95563194 -[NSWindow sendEvent:] + 5757 21 AppKit 0x9547bceb -[NSApplication sendEvent:] + 6431 22 AppKit 0x9540f6fb -[NSApplication run] + 917 23 AppKit 0x95407735 NSApplicationMain + 574 24 macsetup 0x00001f9f main + 24 25 macsetup 0x00001b75 start + 53 ) Can anybody shed some light on what is happening? Am I just using NSFormatter incorrectly? -(NSString*) stringForObjectValue:(id)object { if( ![object isKindOfClass: [ NSString class ] ] ) { return nil; } return [ NSString stringWithString: object ]; } -(BOOL)getObjectValue: (id*)object forString: string errorDescription:(NSString**)error { if( object ) { *object = [ NSString stringWithString: string ]; return YES; } return NO; } -(BOOL) isPartialStringValid: (NSString*) cStr newEditingString: (NSString**) nStr errorDescription: (NSString**) error { *nStr = [NSString stringWithString: [cStr uppercaseString]]; return NO; }

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  • Grep and Awk in Windows Invalid Char in Expression Error

    - by Nathan
    I am new to grep and awk - using Windows 7 (I downloaded grep and awk for windows from GnuWin). I am have having trouble running this script: grep -Fwf dictionary.txt frequency.txt | awk '{print $2 "," $1}' I get the error: awk: '{print awk: ^ invalid char ''' in expression I believe it might have something to do with having to use double quotes in Windows, but I tried all the combinations I can think of and still it doesn't work. Can anyone help? Thanks

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  • Populate a jTable Using MySQL

    - by Nathan Campos
    I have a project with a jTable called AchTable, that is like this: +-------+------+ | File | Type | +-------+------+ | | | | | | | | | +--------------+ And I have a mySQL table that is like the same, then I want to know how could I populate the jTable.

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  • EDIT Control Showing Squares Instead Of Returns

    - by Nathan Campos
    I'm playing a little bit with PocketC by doing a simple text editor. But with this code to read and to display the contents of the file on the EDIT control: int filehandle; int file_len; string file_mode; initComponents() { createctrl("EDIT", "test", 2, 1, 0, 24, 70, 25, TEXTBOX); wndshow(TEXTBOX, SW_SHOW); guigetfocus(); } main() { filehandle = fileopen(OpenFileDlg("Plain Text Files (*.txt)|*.txt; All Files (*.*)|*.*"), 0, FILE_READWRITE); file_len = filegetlen(filehandle); if(filehandle == -1) { MessageBox("File Could Not Be Found!", "Error", 3, 1); } initComponents(); editset(TEXTBOX, fileread(filehandle, file_len)); } It's all ok, but my test file, now have returns: Hello, World! PocketC Test Of My Editor Then when I open this file on the editor, instead of returns, I just see two squares(that means that it's a unknown character for that control), but if I change the control to a STATIC, it does he returns ok, but I can't edit the text if I use a STATIC. Then I want to know what I need to do to do the returns instead of showing those squares.

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  • Using TortoiseHg to push to a authenticated git repository

    - by Nathan Palmer
    I'm trying to push a changeset from a local Mercurial repository created with TortoiseHg to a remote Git repository. I have hg-git installed and configured and it will pull just fine. But when I run the push it gives me this Command hg push git+ssh://git@dummyrepo:username/repo.git Result pushing to git+ssh://git@dummyrepo:username/repo.git importing Hg objects into Git creating and sending data abort: the remote end hung up unexpectedly There are several things I've done to get to this point. But I'm hoping to resolve this last thing because I find TortoiseHg to be much easier to work with than any of the Git tools out there (for windows.) Installed TortoiseHg Pulled down the hg-git from http://bitbucket.org/durin42/hg-git/ Configured mercurial.ini to point to the hg-git library Pulled down dulwich source from git://git.samba.org/jelmer/dulwich.git Compiled dulwich and put it into library.zip for TortoiseHg Configured TortoiseHg to use TortoisePlink.exe for ssh Added my private key to Pageant Any ideas what I could be missing?

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  • Using TortoiseHg to push to an authenticated git repository

    - by Nathan Palmer
    I'm trying to push a changeset from a local Mercurial repository created with TortoiseHg to a remote Git repository. I have hg-git installed and configured and it will pull just fine. But when I run the push it gives me this Command hg push git+ssh://git@dummyrepo:username/repo.git Result pushing to git+ssh://git@dummyrepo:username/repo.git importing Hg objects into Git creating and sending data abort: the remote end hung up unexpectedly There are several things I've done to get to this point. But I'm hoping to resolve this last thing because I find TortoiseHg to be much easier to work with than any of the Git tools out there (for windows.) Installed TortoiseHg Pulled down the hg-git from http://bitbucket.org/durin42/hg-git/ Configured mercurial.ini to point to the hg-git library Pulled down dulwich source from git://git.samba.org/jelmer/dulwich.git Compiled dulwich and put it into library.zip for TortoiseHg Configured TortoiseHg to use TortoisePlink.exe for ssh Added my private key to Pageant Any ideas what I could be missing?

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  • NHibernate Query

    - by Nathan Roe
    Is it possible to get NHibernate to generate a query similar to the following with HQL or Criteria API? select * from ( select row_number() over ( partition by Column1 order by Column2 ) as RowNumber, T.* from MyTable T ) where RowNumber = 1 I can get it to execute the inner select using the formula attribute, but I can't figure out a way to write a HQL or Criteria query that lets me wrap the inner select in the outer one.

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  • DDD and MVC: Difference between 'Model' and 'Entity'

    - by Nathan Loding
    I'm seriously confused about the concept of the 'Model' in MVC. Most frameworks that exist today put the Model between the Controller and the database, and the Model almost acts like a database abstraction layer. The concept of 'Fat Model Skinny Controller' is lost as the Controller starts doing more and more logic. In DDD, there is also the concept of a Domain Entity, which has a unique identity to it. As I understand it, a user is a good example of an Entity (unique userid, for instance). The Entity has a life-cycle -- it's values can change throughout the course of the action -- and then it's saved or discarded. The Entity I describe above is what I thought Model was supposed to be in MVC? How off-base am I? To clutter things more, you throw in other patterns, such as the Repository pattern (maybe putting a Service in there). It's pretty clear how the Repository would interact with an Entity -- how does it with a Model? Controllers can have multiple Models, which makes it seem like a Model is less a "database table" than it is a unique Entity. So, in very rough terms, which is better? No "Model" really ... class MyController { public function index() { $repo = new PostRepository(); $posts = $repo->findAllByDateRange('within 30 days'); foreach($posts as $post) { echo $post->Author; } } } Or this, which has a Model as the DAO? class MyController { public function index() { $model = new PostModel(); // maybe this returns a PostRepository? $posts = $model->findAllByDateRange('within 30 days'); while($posts->getNext()) { echo $posts->Post->Author; } } } Both those examples didn't even do what I was describing above. I'm clearly lost. Any input?

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  • Precompile Lambda Expression Tree conversions as constants?

    - by Nathan
    It is fairly common to take an Expression tree, and convert it to some other form, such as a string representation (for example this question and this question, and I suspect Linq2Sql does something similar). In many cases, perhaps even most cases, the Expression tree conversion will always be the same, i.e. if I have a function public string GenerateSomeSql(Expression<Func<TResult, TProperty>> expression) then any call with the same argument will always return the same result for example: GenerateSomeSql(x => x.Age) //suppose this will always return "select Age from Person" GenerateSomeSql(x => x.Ssn) //suppose this will always return "select Ssn from Person" So, in essence, the function call with a particular argument is really just a constant, except time is wasted at runtime re-computing it continuously. Assuming, for the sake of argument, that the conversion was sufficiently complex to cause a noticeable performance hit, is there any way to pre-compile the function call into an actual constant?

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  • Combining prefixes in SSE

    - by Nathan Fellman
    In SSE the prefixes 066h (operand size override) 0F2H (REPNE) and 0F3h (REPE) are part of the opcode. In non-SSE 066h switches between 32-bit (or 64-bit) and 16-bit operation. 0F2h and 0F3h are used for string operations. They can be combined so that 066h and 0F2h (or 0F3h) can be used in the same instruction, because this is meaningful. What is the behavior in an SSE instruction? For instance, we have (ignoring mod/rm for now): 0f 58 -- addps 66 0f 58 -- addpd f2 0f 58 -- addsd f3 0f 58 -- addss But what is this? 66 f2 0f 58 And how about? f2 66 0f 58 Not to mention the following which has two conflicting REP prefixes: f2 f3 0f 58 What is the spec for thse?

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  • Can I redirect/alias one web service call to another?

    - by Nathan Pitman
    I've written a simple PHP nusoap web service for an application and wish to change the name of one of the actions so that it makes more sense. However there is a CD-ROM based application in the wild using this web service and this action and so I need to redirect or alias any incoming requests to the new action... any idea how I might go about doing this?

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  • Getting Error When Opening Files

    - by Nathan Campos
    I'm developing a simple Text Editor to understand better PocketC language, then I've done this: #include "\\Storage Card\\My Documents\\PocketC\\Parrot\\defines.pc" int filehandle; int file_len; string file_mode; initComponents() { createctrl("EDIT", "test", 2, 1, 0, 24, 70, 25, TEXTBOX); wndshow(TEXTBOX, SW_SHOW); guigetfocus(); } main() { filehandle = fileopen(OpenFileDlg("Plain Text Files (*.txt)|*.txt; All Files (*.*)|*.*"), 0, FILE_READWRITE); file_len = filegetlen(filehandle); if(filehandle = -1) { MessageBox("File Could Not Be Found!", "Error", 3, 1); } initComponents(); editset(TEXTBOX, fileread(filehandle, file_len)); } Then I tried to run the application, it opens the Open File Dialog, I select a file(that is at \test.txt) that I've created with notepad, then I got my MessageBox saying that the file wans't found. Then I want to know why I'm getting this if the file is all correct? *PS: When I click to exit the MessageBox, I saw that the TextBox is displaying where the file is(I've tested with many other files, and with all I got the error and this).

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