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• With Protobuf-net, does it allow deserialization reuse existing instances if they are the same?

  - by Stecy

  I'm using Protobuf-net. Suppose I have a list of Gizmo objects serialized and that each gizmo object reference a Gazoo object. The Gazoo object might be the same object referred by several Gizmo objects. How would deserialization work in this situation? Would I get more than one copies of Gazoos for the same referred one in the gizmo objects? What I would expect would be one copy of Gazoo for all the duplicates in the serialized data.

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• JSON parsing using JSON.net

  - by vbNewbie

  I am accessing the facebook api and using the json.net library (newtonsoft.json.net) I declare a Jobject to parse the content and look for the specific elements and get their values. Everything works fine for the first few but then I get this unexplained nullexception error " (Object reference not set to an instance of an object) Now I took a look at the declaration but cannot see how to change it. Any help appreciated: Dim jobj as JObject = JObject.Parse(responseData) Dim message as string = string.empty message = jobj("message").tostring The error occurs at the last line above.

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• Where does sql server stores the stored procedure code?

  - by NoProblemBabe

  I once needed the lines of the stored procedures, to be able to trace whether i have a reference to some function, procedure or table, or sometimes to try to find something inside of the sp's code. Where does the sql server stores the procedures's code?

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• Using Android Test Framework

  - by Bharat Pawar

  Android provides various packages for testing like AndroidTestCase ApplicationTestCase InstrumentationTestCase ActivityInstrumentationTestCase2 ActivityTestCase I need to know how to decide which package is best suitable for testing my app. Some info is provided in this link http://developer.android.com/reference/android/test/package-summary.html But I need more clarity on this...

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• Does fast typing influence fast programming? [closed]

  - by Lukasz Lew

  Many young programmers think that their bottleneck is typing speed. After some experience one realizes that it is not the case, you have to think much more than type. At some point my room-mate forced me to turn of the light (he sleeps during the night). I had to learn to touch type and I experienced an actual improvement in programming skill. The most surprising was that the improvement not due to sheer typing speed, but to a change in mindset. I'm less afraid now to try new things and refactor them later if they work well. It's like having a new tool in the bag. Have anyone of you had similar experience? Now I trained a touch typing a little with KTouch. I find auto-generate lessons the best. I can use this program to create new lessons out of text files but it's only verbatim training, not auto-generated based on a language model. Do you know any touch typing program that allows creation of custom, but randomized lessons?

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• Projective transformation

  - by mcwehner

  Given two image buffers (assume it's an array of ints of size width * height, with each element a color value), how can I map an area defined by a quadrilateral from one image buffer into the other (always square) image buffer? I'm led to understand this is called "projective transformation". I'm also looking for a general (not language- or library-specific) way of doing this, such that it could be reasonably applied in any language without relying on "magic function X that does all the work for me". An example: I've written a short program in Java using the Processing library (processing.org) that captures video from a camera. During an initial "calibrating" step, the captured video is output directly into a window. The user then clicks on four points to define an area of the video that will be transformed, then mapped into the square window during subsequent operation of the program. If the user were to click on the four points defining the corners of a door visible at an angle in the camera's output, then this transformation would cause the subsequent video to map the transformed image of the door to the entire area of the window, albeit somewhat distorted.

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• Connecting sqlite database

  - by user358171

  Ive seen tutorials after tutorials but i still dont get how to connect a database to my xcode.. i already put it in my reference, put the sqlite framework but still it doesnt work.. i even tried copying the whole code the tutorial offers but still my iphone simulator turns up blank.. can you please help me understand why?

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• Finding character in String in Vector.

  - by SoulBeaver

  Judging from the title, I kinda did my program in a fairly complicated way. BUT! I might as well ask anyway xD This is a simple program I did in response to question 3-3 of Accelerated C++, which is an awesome book in my opinion. I created a vector: vector<string> countEm; That accepts all valid strings. Therefore, I have a vector that contains elements of strings. Next, I created a function int toLowerWords( vector<string> &vec ) { for( int loop = 0; loop < vec.size(); loop++ ) transform( vec[loop].begin(), vec[loop].end(), vec[loop].begin(), ::tolower ); that splits the input into all lowercase characters for easier counting. So far, so good. I created a third and final function to actually count the words, and that's where I'm stuck. int counter( vector<string> &vec ) { for( int loop = 0; loop < vec.size(); loop++ ) for( int secLoop = 0; secLoop < vec[loop].size(); secLoop++ ) { if( vec[loop][secLoop] == ' ' ) That just looks ridiculous. Using a two-dimensional array to call on the characters of the vector until I find a space. Ridiculous. I don't believe that this is an elegant or even viable solution. If it was a viable solution, I would then backtrack from the space and copy all characters I've found in a separate vector and count those. My question then is. How can I dissect a vector of strings into separate words so that I can actually count them? I thought about using strchr, but it didn't give me any epiphanies.

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• Any method that can restart iPhone?

  - by thyrgle

  Is there any method that will restart the iPhone on call? It can be undocumented method (and probably will end up being since I can not find a method like it in the iPhone SDK reference).

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• How to code feature on checking visitor IP address in PHP ?

  - by justjoe

  i still confused on this subject And ask for any help and reference on how to check visitor IP address via PHP. i'm know it seem lazy to ask something before attempt to code something to show. but right now, i also googling to find it. hopefully someone can give general broad answer or some link to read. btw, what to be consider when we had to code some feature like this ?

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• Skipping the BufferedReader readLine() method in java

  - by DDP

  Is there a easy way to skip the readLine() method in java if it takes longer than, say, 2 seconds? Here's the context in which I'm asking this question: public void run() { boolean looping = true; while(looping) { for(int x = 0; x<clientList.size(); x++) { try { Comm s = clientList.get(x); String str = s.recieve(); // code that does something based on the string in the line above } // other stuff like catch methods } } } Comm is a class I wrote, and the receive method, which contains a BufferedReader called "in", is this: public String recieve() { try { if(active) return in.readLine(); } catch(Exception e) { System.out.println("Comm Error 2: "+e); } return ""; } I've noticed that the program stops and waits for the input stream to have something to read before continuing. Which is bad, because I need the program to keep looping (as it loops, it goes to all the other clients and asks for input). Is there a way to skip the readLine() process if there's nothing to read? I'm also pretty sure that I'm not explaining this well, so please ask me questions if I'm being confusing.

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• Can't change the layout of alternatives keys show on android keyboard

  - by Tebam

  I want to change the default layout which Android uses for show the alternative keys when performs a long-press on a key. Keys have an attribute "android:popupKeyboard" used for define the layout of the alternative key list (which could be a Keyboard reference) but when I use it the Android's default layout still appears. Is possible to change or override this layout?

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• binding a usercontrol to the opposite of a bool property

  - by SnOrfus

  Pretty straightforward: I'm looking to do the same as this but in winforms. Everything that google seems to pull up is wpf specific (ie. I don't want to reference presentationframework.dll) Explained if you don't want to read the link: The following is a representation of the intent of what I'd like to do, though it obviously doesn't work. CheckBox1.DataBindings.Add(new Binding("Checked", this.object, "!SomeBool"));

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• C system calls open / read / write / close problem.

  - by Andrei Ciobanu

  Hello, given the following code (it's supposed to write "hellowolrd" in a "helloworld" file, and then read the text): #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #define FNAME "helloworld" int main(){ int filedes, nbytes; char buf[128]; /* Creates a file */ if((filedes=open(FNAME, O_CREAT | O_EXCL | O_WRONLY | O_APPEND, S_IRUSR | S_IWUSR)) == -1){ write(2, "Error1\n", 7); } /* Writes hellow world to file */ if(write(filedes, FNAME, 10) != 10) write(2, "Error2\n", 7); /* Close file */ close(filedes); if((filedes = open(FNAME, O_RDONLY))==-1) write(2, "Error3\n", 7); /* Prints file contents on screen */ if((nbytes=read(filedes, buf, 128)) == -1) write(2, "Error4\n", 7); if(write(1, buf, nbytes) != nbytes) write(2, "Error5\n", 7); /* Close rile afte read */ close(filedes); return (0); } The first time i run the program, the output is: helloworld After that every time I to run the program, the output is: Error1 Error2 helloworld I don't understand why the text isn't appended, as I've specified the O_APPEND file. Is it because I've included O_CREAT ? It the file is already created, shouldn't O_CREAT be ignored ?

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• git status shows a file that I have listed explicitly in my .gitignore file

  - by metaperl

  I have the following line in my .gitignore file: var/www/docs/.backroom/billing_info/inv.pl but when I type 'git status' I am told the following: # modified: var/www/docs/.backroom/billing_info/inv.pl I dont understand how a file which is explicitly listed as an ignore pattern could be listed as modified when I want git to ignore it. There are no lines starting with a ! in my .gitignore file Here is my entire .gitignore file for reference: http://pastebin.com/Jw445Qd7

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• cocoa -- What is the proper way to tell an NSWindow to redisplay its contents?

  - by William Jockusch

  According to the NSWindow Class Reference, you should "rarely need to invoke" the NSWindow methods "display" or "setViewsNeedDisplay". So what is the usual way to redisplay the window's contents? EDIT: I am having trouble dealing with resizing events. I just want to have everything scale proportionally. See this question. As no one seems to have any ideas for using masks to get it to happen, I want to redraw the whole thing.

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• maven plugin configuration

  - by Don

  Hi, When writing a Maven plugin, you can configure various parameters within the mojo class, e.g. /** * The path to the properties files. * * @parameter expression="${project.build.directory}" */ private File buildDir; Is there a reference that lists all the available project properties (e.g. ${project.build.directory})? For example, how do I get the value of the resources directory? Thanks, Don

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• microsoft.office.server.search.query not found

  - by Lalit

  I have added reference to my application of Microsoft.Office.Server as well as Microsoft.Sharepoint . but while importing the namespace in program , there is no option like microsoft.office.server.search.query after microsoft.office.server.search. I am getting their Microsoft.Office.Server.Search.PortalCrawl;. Why this is?? please guide me.

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• ARM Assembly - Converting Endianness

  - by SoulBeaver

  Hello people! This is currently a homework project that me and my teammate are stuck on. We haven't been given much of an introduction into Assembly, and this is supposed to be our first homework exercise. The task is to create a program that converts 0xAABBCCDD into 0xDDCCBBAA. I'm not looking for an answer, as that would defeat the purpose, but we are getting severely frustrated over the difficulty of this stupid thing. We think we have a good start in creating a viable solution, but we just cannot come up with the rest of the program. First, we mask every single tupel (aa), (bb), (cc), (dd) into a different register: LDR R0, LittleEndian // 0xAABBCCDD AND R1, R0, #0xFF000000 // 0xAA AND R2, R0, #0x00FF0000 // 0xBB AND R3, R0, #0x0000FF00 // 0xCC AND R4, R0, #0x000000FF // 0xDD Then we try to re-align them into the R0 register, but hell if we could come up with a good solution... Our best effort came from: ORR R0, R1, LSL #24 ORR R0, R2, LSL #8 ORR R0, R3, LSR #8 ORR R0, R4, LSR #24 which produced 0xBBBBCCDD for some odd reason; we really don't know. Any hints would be greatly appreciated. Again, we are asking for help, but not for a solution. Cheers!

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• iphone: unrecognized selector sent to instance

  - by eshalev

  I am new to objective C, So maybe there is some basic thing that I am missing about selectors. I would like to understand the basic concept behind this error as I have not found an general error reference. I am getting this error when using: [CloseButton addTarget:PageContents action:@selector(CloseButtonPressed) forControlEvents:UIControlEventTouchUpInside]; and then later: - (void)CloseButtonPressed:(id)sender{ UIAlertView *someError = [[UIAlertView alloc] initWithTitle: @"Comment" message: @"hello" delegate: self cancelButtonTitle: @"Ok" otherButtonTitles: nil]; [someError show]; [someError release]; }

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• winsock component

  - by Oghenero

  i have a winsock component made with vb.net in a class library that has events. how do i make it appear in tool box if i reference the dll in another project.? How do i use it in my c# program? thanks

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• Determine if the current thread has low I/O priority

  - by Magnus Hoff

  I have a background thread that does some I/O-intensive background type work. To please the other threads and processes running, I set the thread priority to "background mode" using SetThreadPriority, like this: SetThreadPriority(GetCurrentThread(), THREAD_MODE_BACKGROUND_BEGIN); However, THREAD_MODE_BACKGROUND_BEGIN is only available in Windows Server 2008 or newer, as well as Windows Vista and newer, but the program needs to work well on Windows Server 2003 and XP as well. So the real code is more like this: if (!SetThreadPriority(GetCurrentThread(), THREAD_MODE_BACKGROUND_BEGIN)) { SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_LOWEST); } The problem with this is that on Windows XP it will totally disrupt the system by using too much I/O. I have a plan for a ugly and shameful way of mitigating this problem, but that depends on me being able to determine if the current thread has low I/O priority or not. Now, I know I can store which thread priority I ended up setting, but the control flow in the program is not really well suited for this. I would rather like to be able to test later whether or not the current thread has low I/O priority -- if it is in "background mode". GetThreadPriority does not seem to give me this information. Is there any way to determine if the current thread has low I/O priority?

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• C++ destructors causing crash's

  - by larsonator

  ok, so i got a some what intricate program that simulates the uni systems of students, units, and students enrolling in units. Students are stored in a binary search tree, Units are stored in a standard list. Student has a list of Unit Pointers, to store which units he/she is enrolled in Unit has a list of Student pointers, to store students which are enrolled in that unit. The unit collections (storing units in a list) as made as a static variable where the main function is, as is the Binary search tree of students. when its finaly time to close the program, i call the destructors of each. but at some stage, during the destructors on the unit side, Unhandled exception at 0x002e4200 in ClassAllocation.exe: 0xC0000005: Access violation reading location 0x00000000. UnitCollection destructor: UnitCol::~UnitCol() { list<Unit>::iterator itr; for(itr = UnitCollection.begin(); itr != UnitCollection.end();) { UnitCollection.pop_front(); itr = UnitCollection.begin(); } } Unit Destructor Unit::~Unit() { } now i got the same sorta problem on the student side of things BST destructors void StudentCol::Destructor(const BTreeNode * r) { if(r!= 0) { Destructor(r->getLChild()); Destructor(r->getRChild()); delete r; } } StudentCol::~StudentCol() { Destructor(root); } Student Destructor Student::~Student() { } so yeah any help would be greatly appreciated

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• Converting JBOSS annotations to xml

  - by sixtyfootersdude

  Good Morning, I was just hoping that someone could point me to a reference that defines about what JBOSS annotations are equivalent to what xml tags. I am particularly interested in these tags: @WebContext in org.jboss.ws.annotation.WebContext and @SecurityDomain in org.jboss.annotation.security.SecurityDomain

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• Error while linking libvorbisfile.dylib into Mac application

  - by computergeek6

  I'm working on a program that loads sounds from Ogg Vorbis files, but whatever I do, the XCode project just doesn't seem to want to link libvorbisfile.a into my program. I keep getting linking errors: "_ov_read", referenced from: GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o "_ov_clear", referenced from: GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o "_ov_info", referenced from: GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o "_ov_open", referenced from: GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o GSound::GSound(GWorld*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in GSound.o ld: symbol(s) not found

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