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• Cannot attach to a service in VS 2008

  - by rhj4

  I have created a service in VS 2008 called EmailReader. I have compiled, installed and started the service. Its timer loop is writing records to a log file, so I can see that it is running. I am trying to attach to it in VS 2008, but the process name is greyed out in the list of available processes, and the name is "EmailReader.vshost.exe" instead of "EmailReader.exe". There is probably a simple answer, but I don't know it. Do you?

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• Mootools event leak

  - by user572263

  The example to demonstrate the issue can be found here: link text The test shows a basic Mootools class that contains an element variable with a click event attached. There’s also a “cleanup” function to remove the event and nullify the element variable. My problem is that when I loop a thousand times to create the “LeakClass” instance and clean it up, it causes a major memory leak like there’s no tomorrow. I tested this on IE8 and Chrome. On the other hand what I’ve noticed is that if I comment out the line that adds the “click” event, the code doesn’t leak. Can somebody please help me structure the class/event in a manner that it doesn’t leak. Thanks in advance.

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• Same memory space being allocated again & again

  - by shadyabhi

  In each loop iteration, variable j is declared again and again. Then why is its address remaining same? Shouldn't it be given some random address each time? Is this compiler dependent? #include<stdio.h> #include<malloc.h> int main() { int i=3; while (i--) { int j; printf("%p\n", &j); } return 0; } Testrun:- shadyabhi@shadyabhi-desktop:~/c$ gcc test.c shadyabhi@shadyabhi-desktop:~/c$ ./a.out 0x7fffc0b8e138 0x7fffc0b8e138 0x7fffc0b8e138 shadyabhi@shadyabhi-desktop:~/c$

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• mysql_query( "CALL... multiple results

  - by bradenkeith

  I am tapping into a service that provides zip codes tax information - there service is a bit shakey, so I want to copy their database over and run the results off my own server while using their service to just update my table. However I'm not sure I'm able to loop through multiple results with this query: mysql_query( "CALL zip2tax.z2t_lookup('" . $strZipCode . "','" . $strUserName . "', '" . $strUserPassword . "')" ) I've tried setting $strZipCode to *. However I get an error from the database. I read on MySQL that mysql_next_result should be the solution, however I'm unsure how to properly implement that.

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• Unwanted Retriggering of Textbox Events

  - by user348917

  This is one of those "seems obvious" as how to do, but came across interesting side effect in implementing. I'm trying to keep two text boxes syncronized when information is updated. In this example, I will be using txtStartDate and txtEndDate. If the txtStartDate is changed, then the txtEndDate should should be updated. Likewise, if the txtEndDate changes, I want the txtSartDate to be updated. The side effect I'm comming across is that when I set them up under the TextChanged event for both, the events seem to retrigger against each other indefinately (endless loop?). Am I using the wrong event? Is this a task for a delegate?

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• c++ - FIFO implementation

  - by Narek

  While implementing a FIFO I have used the following structure: struct Node { T info_; Node* link_; Node(T info, Node* link=0): info_(info), link_(link) {} }; I think this a well known trick for lots of STL containers (for example for List). Is this a good practice? What it means for compiler when you say that Node has a member with a type of it's pointer? Is this a kind of infinite loop? And finally, if this is a bad practice, how I could implement a better FIFO.

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• What's some simple F# code that generates the .tail IL instruction?

  - by kld2010

  I'd like to see the .tail IL instruction, but the simple recursive functions using tail calls that I've been writing are apparently optimized into loops. I'm actually guessing on this, as I'm not entirely sure what a loop looks like in Reflector. I definitely don't see any .tail opcodes though. I have "Generate tail calls" checked in my project's properties. I've also tried both Debug and Release builds in Reflector. The code I used is from Programming F# by Chris Smith, page 190: let factorial x = // Keep track of both x and an accumulator value (acc) let rec tailRecursiveFactorial x acc = if x <= 1 then acc else tailRecursiveFactorial (x - 1) (acc * x) tailRecursiveFactorial x 1 Can anyone suggest some simple F# code which will indeed generate .tail?

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• PHP - turning register globals off, what is the best way to go about fixing the code?

  - by user187809

  I am working on a old code base, where programmers assumed that register_globals will always be on. Hence variables are used without $_GET or $_POST prefix, pretty much in every page (the code base is huge, hundreds of scripts). I tried turning it off, but the very first script (login script) goes on an infinite loop. I understand that going through one script at a time, and one line at a time and fixing the variables is probably the only option (adding the prefix $_GET or $_POST as the case may be). Has anyone does this before? How did you go about doing it? Any advice?

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• What happens if you break out of a Lock() statement?

  - by cyclotis04

  I'm writing a program which listens to an incoming TcpClient and handles data when it arrives. The Listen() method is run on a separate thread within the component, so it needs to be threadsafe. If I break out of a do while loop while I'm within a lock() statement, will the lock be released? If not, how do I accomplish this? Thanks! (Any other advice on the subject of Asynchronous TCP Sockets is welcome as well.) private void Listen() { do { lock (_client) { if (!_client.Connected) break; lock (_stateLock) { if (!_listening) break; if (_client.GetStream().DataAvailable) HandleData(); } } Thread.Sleep(0); } while (true); }

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• Add a Click Event to elements added to the DOM

  - by E7AD

  var myOP = '<div>'; for (var i = 0; i < op.length; i++) { myOP += '<div>'; myOP += '<div id="myBTN-' + [i] + '">' + op[i]['Field1'] + '</div>'; myOP += '<div id="blah-' + [i] + '">' + op[i]['Field2'] + '</div>'; myOP += '</div>'; } myOP += '</div>'; $("#myBTN-" + i).click(function () { $('#blah-' + i).toggle("slow"); }); $('#container').html(myOP); I'm trying to get the click function to fire on the elements i'm created w/ the above for loop. Can anyone point me in the right direction?

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• define macro in C wont work

  - by Spidfire

  Im trying to make a macro in C that can tell if a char is a hex number ( 0-9 a-z A-Z) #define _hex(x) (((x) >= "0" && (x) <= "9" )||( (x) >= "a" && (x) <= "z") || ((x) >= "A" && (x) <= "Z") ? "true" : "false") this what ive come up with but it wont work with a loop like this char a; for(a = "a" ; a < "z";a++){ printf("%s => %s",a, _hex(a)); } but it gives a error test.c:8: warning: assignment makes integer from pointer without a cast test.c:8: warning: comparison between pointer and integer test.c:9: warning: comparison between pointer and integer test.c:9: warning: comparison between pointer and integer test.c:9: warning: comparison between pointer and integer test.c:9: warning: comparison between pointer and integer test.c:9: warning: comparison between pointer and integer test.c:9: warning: comparison between pointer and integer

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• Calling inheriting class methods via interface.

  - by Stacey

  Given the scenario... interface IBase{ void Process(int value); } abstract class Base : IBase { public virtual void Process(int value){ throw new NotImplementedException(); } } class Implemented: Base, IBase { public void Process(int value) { // .. some code here.. } } I'm trying to write a loop similar to the following. foreach( Base b in CollectionOfImplemented ) { b.Process( // something will go here // ); } Trying this, it keeps calling Base.Process, instead of Implemented.Process; but the type in the collection is Implemented, not Base. Boxing it seems to work, but I was hoping to see if I could find a more intelligent approach to it, since the Collection will contain other types of objects that also inherit from Base.

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• [C++] Run codes for only 60 times each second.

  - by djzmo

  Hello there, I'm creating a directx application that relies on the system time (because it must be accurate), and I need to run lines of code for 60 times each second in the background (in a thread created by boost::thread). that's equal to 60 FPS (frame per second), but without depending on the main application frame rate. //................. void frameThread() { // I want to run codes inside this loop for *exactly* 60 times in a second. // In other words, every 16.67 (1000/60) milliseconds for(;;) { DoWork(); //......... } } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd) { initialize(); //.....stuffs boost::thread framethread(frameThread); //...... } Is there a way to do this? Any kind of help would be appreciated :)

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• Media player hide control

  - by Geetha

  Hi All, I am using the following code to play video in asp.net application. I want to hide the mediaplayer default controls. Code: <object id="mediaPlayer" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701" width="480" height="270" standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject"> <param name="fileName" value="" /> <param name="animationatStart" value="true" /> <param name="transparentatStart" value="true" /> <param name="autoStart" value="true" /> <param name="showControls" value="true" /> <param name="volume" value="150" /> <param name="loop" value="false" /> <param name="windowlessVideo" value="true" /> </object>

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• jquery integrate form parameter in one object

  - by jesse

  There are many forms in my page. I want to merge them in one object and submit them in one object. But I find serializeArray() or serialize() do not match my request, the serializeArray function will generate a array object and serialize is used by get model, it is not an object. is there a jquery or local function can merge them in one object. I have one solution but it is not perfect, loop the array object generated by serializeArray, use $.extend to merge them in one object. is there a better method? kindly help, thanks.

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• Using "as" and expecting a null return

  - by DrLazer

  For example. Lets say we have a stackpanel on a form. Its full of both Grids and Labels. I want to loop through all the Grids and do some operation on them but leave the Lables intact. At the moment I am doing it this way. foreach(UIElement element in m_stacker.Children) { Grid block = element as Grid; if(block != null) { //apply changes here } } So i'm using the fact that "as" returns null if it cannot cast into the required type. Is this an ok thing to do or is there a better solution to this problem?

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• Why does set key not do anything in AES/SymmetricAlgorithm?

  - by acidzombie24

  This MESSED ME UP hard. I thought i was setting the key but i was not. No exceptions, nothing happen except bad results. Why is there a setter if everything is ignored and no exceptions are thrown when i attempt to write? What is the point of the setter on the Keys property? When i do the below Key value are not changed. After an hour when i realize what was happening i wrote the loop to verify. I also tried aes.Key[0] = val; var b = val == aes.Key[0]; (and messed with it in immediate mode). Why does it have this behavior? Array.Copy(myKey, aes.Key, aes.Key.Length); int i = 0; foreach (var v in aes.Key) { var b = myKey[i++] == v; if (!b) b = b; }

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• sound not playing when i press the button and how to fix overlapping sounds

  - by alfredjunco

  the code is giving me an error"Unused variable'path'" and when i press a button there is no sound playing how do i fix this the aSound is in the h file - (void)playOnce:(NSString *)aSound; - (IBAction) beatButton50 { [self playOnce:@"racecars"]; } - (void)playOnce:(NSString *)aSound { NSString *path = [[NSBundle mainBundle] pathForResource:aSound ofType:@"caf"]; if([theAudio isPlaying]) { [theAudio stop]; } } - (void)playLooped:(NSString *)aSound { NSString *path = [[NSBundle mainBundle] pathForResource:aSound ofType:@"caf"]; if (!theAudio) { theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL: [NSURL fileURLWithPath: path] error: NULL]; } [theAudio setDelegate: self]; // loop indefinitely [theAudio setNumberOfLoops: -1]; [theAudio setVolume: 1.0]; [theAudio play]; } - (void)stopAudio { [theAudio stop]; [theAudio setCurrentTime:0]; }

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• A 3-D grid of regularly spaced points

  - by Jack

  I want to create a list containing the 3-D coords of a grid of regularly spaced points, each as a 3-element tuple. I'm looking for advice on the most efficient way to do this. In C++ for instance, I simply loop over three nested loops, one for each coordinate. In Matlab, I would probably use the meshgrid function (which would do it in one command). I've read about meshgrid and mgrid in Python, and I've also read that using numpy's broadcasting rules is more efficient. It seems to me that using the zip function in combination with the numpy broadcast rules might be the most efficient way, but zip doesn't seem to be overloaded in numpy.

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• Problem with adding integers in an array

  - by rshivers

  Hello again, I'm trying to loop through my totals in order to get a grand total for my web app. So far the code I am working with is the following: function calcAllFields() { var name = parseFloat($('div [name = total[]]').text()); var totArray = $.makeArray(name); var total = 0; for (var i = 0; i < totArray.length; i++) { total += totArray[i]; } $("#target1").text(total); } Instead of adding integers, something is being read as a string. Say I want to add 200 + 50, instead of 250 I get 20050. Could anyone please point out what I'm doing wrong? Thanks!

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• Finding employees specific to department in SQL SERVER 2000(SET BASED)

  - by xyz

  Suppose I have a table (tblEmp) whose structure is like as under Dept Emp d1 e1 d1 e2 d1 e3 d2 e4 d2 e5 d3 e6 If I need to bring the output as Dept DepartmentSpecificEmployees d1 e1,e2,e3 d2 e4,e5 d3 e6 I will write the query as select Dept, stuff((select Emp + ',' from tblEmp t2 where t1.Dept = t2.Dept for xml path(''),1,1,'')DepartmentSpecificEmployees from tblEmp t1 group by Dept But this will work in Sql Server 2005+. How can I achieve the same in Sql Server 2000 without any variable declaration or loop or cursor? If I use COALESCE as an alternative, then I need to use a variable which will defeat the purpose Please help

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• Java concurrency - Should block or yield?

  - by teto

  Hi, I have multiple threads each one with its own private concurrent queue and all they do is run an infinite loop retrieving messages from it. It could happen that one of the queues doesn't receive messages for a period of time (maybe a couple seconds), and also they could come in big bursts and fast processing is necessary. I would like to know what would be the most appropriate to do in the first case: use a blocking queue and block the thread until I have more input or do a Thread.yield()? I want to have as much CPU resources available as possible at a given time, as the number of concurrent threads may increase with time, but also I don't want the message processing to fall behind, as there is no guarantee of when the thread will be reescheduled for execution when doing a yield(). I know that hardware, operating system and other factors play an important role here, but setting that aside and looking at it from a Java (JVM?) point of view, what would be the most optimal?

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• flex accessing children of a list component

  - by pfunc

  when I try to loop through the children of a List component that has buttons in it, I can't seem to access those children. I try for(var btnNum:Number = 0; btnNum < myList.numChildren; btnNum++) { trace(myList.getChildAt(btnNum); } but it is giving some other instance, not the button instances. and the weeklist <mx:List id="myList" dataProvider="{_data.mappoints.week.@number}" > <mx:itemRenderer > <mx:Component> <mx:Button buttonMode="true" toggle="true" alpha="1" width="116" height="35" label="WEEK {data}" > </mx:Button> </mx:Component> </mx:itemRenderer> </mx:List>

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• Bash file descriptor leak

  - by Charles Duffy

  I get a file descriptor leak when running the following code: function get_fd_count() { local fds cd /proc/$$/fd; fds=( * ) # avoid a StackOverflow source colorizer bug echo "${#fds[@]}" } function fd_leak_func() { echo ">> Current FDs: $(get_fd_count)" read retval new_state < <(set +e; new_state=$(echo foo); retval=$?; printf "%d %s\n" $retval $new_state) } function parent_func() { while fd_leak_func; do :; done } parent_func Tested on both 3.2.25 and 4.0.28. Taking the while loop out of parent_func and running it at top level makes the problem go away. What's going on here? More to the point, are workarounds available?

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• PHP - ftp_get only works once

  - by William

  I'm connecting to an ftp server that I have no control over, and I'm pretty sure is using something old and outdated due to other issues I've run into. I'm simply using this code in a loop to get all the files in a directory. ftp_put($this->conn_id, $remote, $local, FTP_ASCII); The first time all goes well, but after that I get this error thrown for each file I try to get: "There is already an active transaction" I've tried both passive & active with no luck. It's the exact same code I use to connect to other FTP servers and get files with no problem. Any ideas? I suppose my last resort could be disconnecting and reconnecting for each file, but that seems like a huge waste.

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