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  • Run a shell command from Django

    - by Badifunky
    Hello, I'm developing a web page in Django (using apache server) that needs to call a shell command to enable/dissable some daemons. I'm try to do it with os.system(service httpd restart 1>$HOME/out 2>$HOME/error) and this command doesn't return anything. Any idea how can i fix this?

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  • Trying to get the associated value from an Enum at runtime in Java

    - by devoured elysium
    I want to accomplish something like the following (my interest is in the toInt() method). Is there any native way to accomplish this? If not, how can I get the integer associated with an enum value (like in C#) ? enum Rate { VeryBad(1), Bad(2), Average(3), Good(4), Excellent(5); private int rate; private Rate(int rate) { this.rate = rate; } public int toInt() { return rate; } } Thanks

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  • Adding a link using JQuery html() is not click-able on IE6

    - by Abs
    Hello all, I add html to a page using JQuery's html() function. This works great on most browsers except IE6. I can work round this by adding a click event etc but I want to fix the issue without extra tape! Any ideas why this doesn't work on IE6? $('#button_holder').html('<a href="#" onclick="run_activity_upload(); return false;" id="save_button">Upload</a>'); Thanks, Abs

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  • Why should I call self=[super init]

    - by Michael
    Let's say I create my class and its init method. Why should I call and return value of superclass init assigned to self? Which cases it covers? I would appreciate examples why would I need it for Cocoa superclass and non-Cocoa.

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  • how a thread can signal when it's finished?

    - by Kyle
    #include <iostream> #include <boost/thread.hpp> using std::endl; using std::cout; using namespace boost; mutex running_mutex; struct dostuff { volatile bool running; dostuff() : running(true) {} void operator()(int x) { cout << "dostuff beginning " << x << endl; this_thread::sleep(posix_time::seconds(2)); cout << "dostuff is done doing stuff" << endl; mutex::scoped_lock running_lock(running_mutex); running = false; } }; bool is_running(dostuff& doer) { mutex::scoped_lock running_lock(running_mutex); return doer.running; } int main() { cout << "Begin.." << endl; dostuff doer; thread t(doer, 4); if (is_running(doer)) cout << "Cool, it's running.\n"; this_thread::sleep(posix_time::seconds(3)); if (!is_running(doer)) cout << "Cool, it's done now.\n"; else cout << "still running? why\n"; // This happens! :( return 0; } Why is the output of the above program: Begin.. Cool, it's running. dostuff beginning 4 dostuff is done doing stuff still running? why How can dostuff correctly flag when it is done? I do not want to sit around waiting for it, I just want to be notified when it's done.

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  • I want to check if $('#td1').text() === "x"?

    - by M.z
    I want to check if innerHtml have X or O , so i can not add again any thing else , but it's not working . it stop after adding the check code , I'm trying here to do a simple X O game to get more familiar with javascript and jquery . also I'm not sure if can do this with jQuery . <script type="text/javascript" > function ranFun() { return Math.floor((Math.random() * 9) + 1); } var a; function Elment(a) { document.getElementById("td" + a).innerHTML = "O"; } function call() { var x = ranFun(); switch (x) { case 1:case 2 :case 3: case 4 :case 5 : case 6 : case 7 : case 8 : case 9 : Elment(x); break; default: break; } } function tdElm(c) { if ($('#td1').text() === "x" || $('#td1').text() == "o") return false; else { document.getElementById("td" + c).innerHTML = "x"; call(); } } </script> <BODY> <center> <h1 >" X ,O Game "</h1> <table > <tr> <td id="td1" onclick="tdElm(1);" ></td> <td id="td2" onclick="tdElm(2);"></td> <td id="td3" onclick="tdElm(3);"></td> </tr> <tr> <td id="td4" onclick="tdElm(4);"></td> <td id="td5" onclick="tdElm(5);"></td> <td id="td6" onclick="tdElm(6);"></td> </tr> <tr> <td id="td7" onclick="tdElm(7);"></td> <td id="td8" onclick="tdElm(8);"></td> <td id="td9" onclick="tdElm(9);"></td> </tr> </table> </center> </BODY>

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  • PHP: Prevent a function from returning value?

    - by Industrial
    Hi everybody, How could I make sure that the startProcess(); function is being called, but without halting the execution for myFunction(). I'll guess that there's a way to call a function and prevent it from returning it's value to thereby accomplishing this? Pseudo-code: function myFunction() { startProcess(); return $something; } function startProcess() { sleep(5); // Do stuff that user doesn't should have to wait for. }

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  • C++ Question on the pow function.

    - by Sagistic
    I'm trying to get this expression to work, I'm pretty sure its not the parenthesis because I counted all of them. Perhaps there something I'm doing wrong involving the parameter pow (x,y). double calculatePeriodicPayment() { periodicPaymentcalc = (loan * ((interestRate / yearlyPayment))) / (1-((pow ((1+(interestRate / yearlyPayment)))),(-(yearlyPayment * numOfYearLoan)))); return periodicPaymentcalc; }

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  • IE is doing strange things with JQuery

    - by Syncopated
    So ... The thing is, the code works in FireFox, no problems. But when I open the same page, it gives me the following error: "Undefined is null or not an object." But when I copy the code to a localhost page, it works fine. Also when I clear my cache in IE it works, but only once, if I refresh after that one load, it gives me the same error. Here is the code: <script type="text/javascript" src="datepicker/js/jquery-1.4.2.min.js"></script> <script type="text/javascript"> var count3 = 0; var count5 = 0; var count2 = 0; var count4 = 0; $(document).ready(function(){ $('#switch3').click(function(){ $('#switchDiv3').slideToggle(350); if(count3 == 0){ count3 = 1; document.getElementById('switchImage3').src = "images/ArrowDown.png"; return; } else { count3 = 0; document.getElementById('switchImage3').src = "images/ArrowRight.png"; return; } }); ... (this is the code for each item that is generated) </script> And the code that determines the div that should hide: <table width="100%" border="0" cellspacing="0" cellpadding="0" align="center"> <tr> <td width="20" align="center" valign="top" style="padding-right: 3px"> <a style="cursor: pointer;" id="switch3"><img width="20" height="20" src="images/ArrowRight.png" id="switchImage3" style="border-style: solid; border-width: 1px; border-color: black;"/></a> </td> <td> <div id="switchDiv3"> <div align="left"> (Contents of the div here) </div> </div> </td> </tr> </table> Any help is appreciated! Thanks in advance

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  • mysql_affected_rows() always returns 1 even though no row was updated.

    - by happyhardik
    What I am trying to do is: (programmatically) Update status where id is something, if no rows where updated, give error: we cannot find the record with id something, otherwise give message success. Here I am using mysql_affected_rows() to know if a row was updated or not, but it always return 1, so the user gets a success message, even though there was no row updated. Can anyone tell me what could it be?

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  • && operation in actionscript

    - by wcpro
    In the following code the line after the if statement gets run even when "BITMAP" is null. Why is this? public function get BitmapHeight () { if (_bitmapHeight == 0 && BITMAP != null) _bitmapHeight = BITMAP.bitmapData.height; return _bitmapHeight; }

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  • Float to binary in C++

    - by Eric
    Hi, I'm wondering if there is a way to represent a float using a char in C++? For example: int main() { float test = 4.7567; char result = charRepresentation(test); return 0; } I read that probably using bitset I can do it but I'm not pretty sure.

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  • C++ Edit Box Text Change

    - by user1218395
    Is their any cases in C++ Like these case WM_COMMAND: switch(LOWORD(wParam)) That happen when you change the text of a edit Box, I need to call a function when i change in edit box and store the value of the edit box into a Integer. case EditCD: //ID of your edit { if (HIWORD(wParam) == EN_CHANGE) MessageBox(hwnd, "Text!", "Test!", MB_OK); return TRUE; } Doesnt work did i do it wrong?

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  • Why thread started by ScheduledExecutorService.schedule() never quits?

    - by moonese
    If I create a scheduled task by calling ScheduledExecutorService.schedule(), it never quits after execution, is it a JDK bug, or I just miss something? note: doSomething() is empty method below. public static void doSomething() { } public static void main(String[] args) { ScheduledFuture scheduleFuture = Executors.newSingleThreadScheduledExecutor().schedule(new Callable() { public Void call() { try { doSomething(); } catch (Exception e) { e.printStackTrace(); } return null; } }, 1, TimeUnit.SECONDS); }

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  • Why doesn't this inner class compile?

    - by Vincenzo
    This is my code: #include <algorithm> class A { void f() { struct CompareMe { bool operator() (int i, int j) { return i < j; } } comp; int a[] = {1, 2, 3, 4}; int found = std::min_element(a[0], a[3], comp); } } Error message: no matching function for call to ‘min_element(int&, int&, A::f()::CompareMe&) What am I doing wrong?

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  • PHP $array[0] in $string for JSON

    - by user1907696
    I am trying to use PHP to make a JSON file. Part of the code is as follow $array = array("hello", "world"); $string='{"person": [ { "name":'$array[0];', "age":'$array[1];' } ] }'; The file created. However, $array[0] and $array[1] doesn't return the values "hello" and "world" but as $array[0] and $array[1] Any idea? Thanks

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  • Weird initialization in C

    - by pacopepe
    Hi there, I have this piece of code and i don't know how it works #include <stdio.h> int main(void) { int numero = ({const int i = 10; i+10;}); printf("%d\n", numero); // Prints 20 return 0; } Why if i delete the second part (i+10;), the compiler gets an error? Why are the brackets necessary? Thank you ^^!

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  • [C#] Library for working with web pages

    - by kitchen
    I'm in search for a library that will let me work with web pages using C# without having to display anything graphically. The library should handle web sites that use JavaScript / AJAX and it should return the correct HTML as if I were viewing the source from within Firefox/Chrome. If there is any information I left out, let me know.

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