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  • why do i see THROW in a C library

    - by Bhagya
    When I do: less /usr/include/stdio.h (which is only a C library - nothing to do with C++) I see __THROW after quite a few function declarations. Also, comments above a few functions say that 'This function is a possible cancellation point and therefore not marked with __THROW' What is all this for? THROW is meant to be for exception handling.. but as far as I know, C doesn't provide any support for it... Plz explain.

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  • Own CMS or Blog

    - by Xander cage
    I'm trying t build a somekind a clone to wordpress and have some problems understanding the functions that are used there. But that's not the problem.. The thing I'm looking for is good book that detailed explains what aspects to be aware of during the creation of the cms and some code snippets or something in that direction.. With best regards

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  • Velocity $fn docs

    - by glowcoder
    I notice in some Velocity reports I'm working with that $fn contains some built in functions for Velocity. I can't seem to find a list of these. For example, `$fn.formatNumber($fn.duration($time),'##0.0') My google-fu has failed me on this one. Anyone have link to the docs on this?

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  • An interesting case of delete and destructor (C++)

    - by Viet
    I have a piece of code where I can call destructor multiple times and access member functions even the destructor was called with member variables' values preserved. I was still able to access member functions after I called delete but the member variables were nullified (all to 0). And I can't double delete. Please kindly explain this. Thanks. #include <iostream> using namespace std; template <typename T> void destroy(T* ptr) { ptr->~T(); } class Testing { public: Testing() : test(20) { } ~Testing() { printf("Testing is being killed!\n"); } int getTest() const { return test; } private: int test; }; int main() { Testing *t = new Testing(); cout << "t->getTest() = " << t->getTest() << endl; destroy(t); cout << "t->getTest() = " << t->getTest() << endl; t->~Testing(); cout << "t->getTest() = " << t->getTest() << endl; delete t; cout << "t->getTest() = " << t->getTest() << endl; destroy(t); cout << "t->getTest() = " << t->getTest() << endl; t->~Testing(); cout << "t->getTest() = " << t->getTest() << endl; //delete t; // <======== Don't do it! Double free/delete! cout << "t->getTest() = " << t->getTest() << endl; return 0; }

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  • PHP Mcrypt - Encrypting / Decrypting file

    - by whitman6732
    Trying to write a couple of functions that will encrypt or decrypt a file and am using the class found here to try and accomplish this: http://www.itnewb.com/v/PHP-Encryption-Decryption-Using-the-MCrypt-Library-libmcrypt The encryption function below seems to work, in that it appears to encrypt the file and place it in the intended directory. I'm trying to decrypt the file now, and it just dies with the message "Failed to complete decryption" (which is coded in there...) There's nothing in the php error logs, so I'm not sure why it's failing, but as mcrypt is entirely new to me, I'm more than inclined to believe I'm doing something wrong here... Here are the functions: //ENCRYPT FILE function encryptFile() { global $cryptastic; $pass = PGPPASS; $salt = PGPSALT; $key = $cryptastic->pbkdf2($pass, $salt, 1000, 32) or die("Failed to generate secret key."); if ($handle = opendir(PATH.'/ftpd')) { while (false !== ($file = readdir($handle))) { if ($file != "." && $file != "..") { $newfile = PATH.'/encrypted/'.$file.'.txt'; $msg = file_get_contents(PATH.'/ftpd/'.$file); $encrypted = $cryptastic->encrypt($msg, $key) or die("Failed to complete encryption."); $nfile = fopen($newfile, 'w'); fwrite($nfile, $encrypted); fclose($nfile); unlink(PATH.'/ftpd/'.$file); } } closedir($handle); } //DECRYPT FILE function inFTP() { global $cryptastic; $pass = PGPPASS; $salt = PGPSALT; $key = $cryptastic->pbkdf2($pass, $salt, 1000, 32) or die("Failed to generate secret key."); if ($handle = opendir(PATH.'/encrypted')) { while (false !== ($file = readdir($handle))) { if ($file != "." && $file != "..") { $newfile = PATH.'/decrypted/'.$file; $msg = PATH.'/encrypted/'.$file; $decrypted = $cryptastic->decrypt($msg, $key) or die("Failed to complete decryption."); $nfile = fopen($newfile, 'w'); fwrite($nfile, $decrypted); fclose($nfile); //unlink(PATH.'/encrypted/'.$file); } } closedir($handle); } //$crypt->decrypt($file); }

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  • Shaders with pygtkglext

    - by qba
    Do someone know how to get glsl shaders work in gtk-opengl window? With glut all glCreateProgram etc. functions works, but when I tried to put the same gl code into pygtkglext window, its complaining about NullReference: OpenGL.error.NullFunctionError: Attempt to call an undefined function glCreateProgram, check for bool(glCreateProgram) before calling So then I from OpenGL.GL.ARB.shader_objects import *, but the result is similar: OpenGL.error.NullFunctionError: Attempt to call an undefined function glCreateProgramObjectARB, check for bool(glCreateProgramObjectARB) before calling Any idea will be useful.

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  • Flex AS3: ProgressBar doesn't move

    - by jolierouge
    Hey All, I am a little stuck and need some advice/help. I have a progress bar: <mx:ProgressBar id="appProgress" mode="manual" width="300" label="{appProgressMsg}" minimum="0" maximum="100"/> I have two listener functions, one sets the progress, and one sets the appProgressMsg: public function incProgress(e:TEvent):void { var p:uint = Math.floor(e.data.number / e.data.total * 100); trace("Setting Perc." + p); appProgress.setProgress(p, 100); } public function setApplicationProgressStep(e:TEvent):void { trace("Setting step:" + e.data); appProgressMsg = e.data; } I want to reuse this progress bar alot. And not necessarily for ProgressEvents, but when going through steps. For instance, I loop over a bunch of database inserts, and want to undate the progress etc. Here is a sample: public function updateDatabase(result:Object):void { var total:int = 0; var i:int = 0; var r:SQLResult; trace("updateDatabase called."); for each (var table:XML in this.queries.elements("table")) { var key:String = table.attribute("name"); if (result[key]) { send(TEvent.UpdateApplicationProgressStep, "Updating " + key); i = 1; total = result[key].length; for each (var row:Object in result[key]) { //now, we need to see if we already have this record. send(TEvent.UpdateApplicationProgress, { number:i, total: total } ); r = this.query("select * from " + key + " where server_id = '" + row.id + "'"); if (r.data == null) { //there is no entry with this id, make one. this.query(table.insert, row); } else { //it exists, so let's update. this.update(key, row); } i++; } } } } Everything works fine. That is, the listener functions are called and I get trace output like: updateDatabase called. Setting step:Updating project Setting Perc 25 Setting Perc 50 Setting Perc 75 Setting Perc 100 The issue is, only the very last percent and step is shown. that is, when it's all done, the progress bar jumps to 100% and shows the last step label. Does anyone know why this is? Thanks in advance for any help, Jason

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  • How can I reuduce jQuery ?

    - by Tommy
    I'm using just a few basic jQuery functions on my site. How can I remove unused jQuery code? Knowing only the basics, I looked at the code and was not sure where to start. If you could point me in the right direction, that would be appreciated. Thanks.

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  • PHP Arrays: A good way to check if an array is associative or sequential?

    - by Wilco
    PHP treats all arrays as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys? Basically, I want to be able to differentiate between this: $sequentialArray = array('apple', 'orange', 'tomato', 'carrot'); and this: $assocArray = array('fruit1' => 'apple', 'fruit2' => 'orange', 'veg1' => 'tomato', 'veg2' => 'carrot');

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  • Can I migrate from ClearCase to Serena VM?

    - by Rich B
    I have a repository using Rational ClearCase Explorer 2003.06.10+ which I want to migrate into Serena ChangeMan Version Manager 8.1.4.2. Is this possible? The ClearCase repository was not used for all it's functions, just as a place to hold copies of documents, so the only thing I need to keep is the files and their version histories.

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  • jQuery Validation Arguments

    - by Idsa
    jQuery Validation plugin has "element" argument for required rule. I know how to use it for inline functions but what if I want to pass it to out-of-line JS function? I tried this: rules: { startHours: { required: startTimeRequired(element) }, but it didn't work.

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  • What's wrong with my JSON?

    - by Ronald
    Anybody out there notice anything wrong with this JSON? It validates at JSONLint.com, but neither Chrome nor Firefox's native JSON parse functions will properly parse it. Any ideas? { "result": "{\"players\":[{\"name\":\"User 522\",\"turn\":true,\"score\":0},{\"name\":\"User 925\",\"turn\":false,\"score\":5}],\"enableControls\":false}", "error": "null", "id": "7" }

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  • mysql datetime performance

    - by praksant
    Hi, since in mysql datetime field is represented as string (i'm not sure how it works internally), wouldn't be from performance point of view faster to store date as unix timestamp? I don't need to use any mysql native date functions, i'm going for performance of sorting and selecting data. if there was an index for that column, would be difference between int and datetime? Thank you

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  • UIScrollView - Figuring out where the scroll will stop

    - by spin-docta
    I'm trying to figure out how to calculate where the scrollview will stop when a user does a swipe gesture and the scrollview goes into deceleration. I'm trying to use the delegate functions, but I can't accurately figure it out. Please help! - (void) scrollViewDidScroll:(UIScrollView *)scrollView; - (void) scrollViewWillBeginDecelerating:(UIScrollView *)scrollView; - (void) scrollViewDidEndDecelerating:(UIScrollView *)scrollView;

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  • MapReduce for counting parameter values

    - by cnkt
    I have document like this: { "_id": ObjectId("4d17c7963ffcf60c1100002f"), "title": "Text", "params": { "brand": "BMW", "model": "i3" } } { "_id": ObjectId("4d17c7963ffcf60c1100002f"), "title": "Text", "params": { "brand": "BMW", "model": "i5" } } What i need is the count of every params values. like: brand --------- BMW (2) model --------- i3 (1) i5 (1) I think i have to write map/reduce functions. How can i do this? Thanks.

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  • How to turn on monitor after wake-up from suspend mode?

    - by alek.sys
    Hi all, I need wake up PC from sleep to perform some actions - from C#. I've used CreateWaitableTimer functions, everything goes fine, at given time PC wakes up - but monitor stays in power save mode (turned off). So i want to know - how possible to turn on monitor after wake up? PS I've tried "Complete Guide on How To Turn A Monitor On/Off/Standby" - with SendMessage (Codeproject) and SetThreadExecutionState(ES_DISPLAY_REQUIRED) - it doesn't work Any ideas?

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  • Go from a ViewController, to an other section of a TabBar

    - by Seraphin
    Hi, I'm currently doing an application with 5 View Controllers and a tabBar on the bottom. For this application, I need to set up a button in viewController(1) which can send me to an other viewController(3), but without touching the tabBar (it will be hidden for the viewController(1)). I basically know how to use a tabBar, but I don't know wich functions I can use to do that. Thanks in advance! Séraphin

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  • running SVN scripts of users with no password

    - by Oded
    Hi, I'm running SVN functions such as log from the command line. I'm using --username and --password attributes to authenticate the function. Unfortunately, my users don't have passwords and I'm don't know what value to provide in the command line for the password. the syntax is: --password ARG and I don't have any value. please help. Thanks.

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