Search Results

Search found 11197 results on 448 pages for 'handle leak'.

Page 73/448 | < Previous Page | 69 70 71 72 73 74 75 76 77 78 79 80  | Next Page >

• What are some of best Javascript memory detecting tools?

  - by Philip Fourie

  Our team is faced with slow but serious Javascript memory leak. We have read up on the normal causes for memory leaks in Javascript (eg. closures and circular references). We tried to avoid those pitfalls in the code but it likely we still have unknown mistakes left in our code. I started my search for available tools but would like input from people with actual experience with these tools. Some of the tools I found so far (but have no idea how good and useful they would be for our problem): Sieve Drip JavaScript Memory Leak Detector Our search is not limited to free tools, it will be a bonus, but more importantly something that will get the job done. We do the following in our Javascript code: AJAX calls to a .NET WCF back-end that send back JSON data Manipulate the DOM Keep a fairly sized object model in the Javascript to store current state

  Read the article

• .NET Framework - Possible memory-leaky classes?

  - by Robert Fraser

  Just the other day I was investigating a memory leak that was ballooning the app from ~50MB to ~130MB in under two minutes. Turns out that the problem was with the ConcurrentQueue class. Internally, the class stores a linked list of arrays. When an item is dequeued from the ConcurrentQueue, the index in the array is bumped, but the item remains in the array (i.e. it's not set to null). The entire array node is dropped after enough enqueues/dequeues, so it's not technically a leak, but if storing only a few large objects in the ConcurrentQueue, this can get out of hand fast. The documentation makes no note of this danger. I was wondering what other potential memory pitfalls are in the Base Class Library? I know about the Substring one (that is, if you call substring and just hold onto the result, the whole string will still be in memory). Any others you've encountered?

  Read the article

• Colors in Instruments when hunting down memory leaks

  - by Structurer

  Hi I'm currently hunting down a memory leak in my app for iPhone. I'm using Instruments to track down the code that is causing the leak (becoming more and more a friend of Instruments!). Now Instruments show two lines: one in dark blue (row 146) and one in a lighter blue (150). From some trial and error I get that they are connected somehow, but not good enough at Objective-C and Memory Management yet to really understand how. Does anyone know why different colors are used and what could be my problem? I have tried to release numberForArray but the the app crashes when showing the last line in a picker view. All ideas appreciated! (Posting this I also realize that line 139 is redundant! Se there, already an improvement ;-)

  Read the article

• sorting nested list, allow only li to be sorted witin the same ul

  - by Y.G.J

  what i want to achive is: sorting the main ul is working but not all the time - i will try to fix that my own but if there is a problem with the code here and not the one in proccess-sortable - tell me. moving li in the main ul is ok but the sub or the sub of the sub is having problem - i can drag something from one sub to it's sub or the other way too - i don't want that to happend. i want to be able to drag li and by selecting that one that only this ul group will send to proccess-sortable to be updated - how can i catch the specific ul of li i am draging? $(document).ready(function() { $("#test-list").sortable({ items: "> li", handle : '.handle', axis: 'y', opacity: 0.6, update : function () { var order = $('#test-list').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); $("#test-sub").sortable({ containment: "ul", items: "li", handle : '.handle2', axis: 'y', opacity: 0.6, update : function () { var order = $('ul').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); }); this is the html part <ul id="test-list"> <li id="listItem_10">first<img align="middle" src="Themes/arrow.png" class="handle" /></li> <li id="listItem_8">second<img align="middle" src="Themes/arrow.png" class="handle" /> <ul id="test-sub"> <li id="listItem_4><img align="middle" src="Themes/arrow.png" class="handle2" /></li> <li id="listItem_3"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> <ul id="test-sub"> <li id="listItem_9"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> </ul> </li> </ul> </li> </ul>

  Read the article

• problem with jquery sortable of ul with childrens - how to allow li to be sorted only on the same le

  - by Y.G.J

  $(document).ready(function() { $("#test-list").sortable({ items: "> li", handle : '.handle', axis: 'y', opacity: 0.6, update : function () { var order = $('#test-list').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); $("#test-sub").sortable({ containment: "ul", items: "li", handle : '.handle2', axis: 'y', opacity: 0.6, update : function () { var order = $('ul').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); }); <ul id="test-list"> <li id="listItem_10">first<img align="middle" src="Themes/arrow.png" class="handle" /></li> <li id="listItem_8">second<img align="middle" src="Themes/arrow.png" class="handle" /> <ul id="test-sub"> <li id="listItem_4><img align="middle" src="Themes/arrow.png" class="handle2" /></li> <li id="listItem_3"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> <ul id="test-sub"> <li id="listItem_9"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> </ul> </li> </ul> </li> </ul> the problems i have: sorting the main ul is working but not all the time - i will try to fix that my own but if there is a problem with the code here and not the one in proccess-sortable - tell me. moving li in the main ul is ok but the sub or the sub of the sub is having problem - i can drag something from one sub to it's sub or the other way too - i don't want that to happend. i want to be able to drag li and by selecting that one that only this ul group will send to proccess-sortable to be updated - how can i catch the specific ul of li i am draging?

  Read the article

• Why doesn't this work?

  - by user146780

  I'v tried to solve a memory leak in the GLU callback by creating a global variable but now it dos not draw anything: GLdouble *gluptr = NULL; void CALLBACK combineCallback(GLdouble coords[3], GLdouble *vertex_data[4], GLfloat weight[4], GLdouble **dataOut) { GLdouble *vertex; if(gluptr == NULL) { gluptr = (GLdouble *) malloc(6 * sizeof(GLdouble)); } vertex = (GLdouble*)gluptr; vertex[0] = coords[0]; vertex[1] = coords[1]; vertex[2] = coords[2]; for (int i = 3; i < 6; i++) { vertex[i] = weight[0] * vertex_data[0][i] + weight[1] * vertex_data[0][i] + weight[2] * vertex_data[0][i] + weight[3] * vertex_data[0][i]; } *dataOut = vertex; } basically instead of doing malloc each time in the loop (thus the memory leak) im using a global pointer, but this doesn't work (drawing to the screen). Why would using malloc to a pointer created in the function work any different than a global variable? Thanks

  Read the article

• Few doubts regarding Bitmaps , Images & `using` blocks

  - by imageWorker

  I caught up in this problem. http://stackoverflow.com/questions/2559826/garbage-collector-not-doing-its-job-memory-consumption-1-5gb-outofmemory-exc I feel that there is something wrong in my understanding. Please clarify these things. Destructor & IDisposable.Dispose are two methods for freeing resources that are not not under the control of .NET. Which means, everything except memory. right? using blocks are just better way of calling IDisposable.Dispose() method of an object. This is the main code I'm referring to. class someclass { static someMethod(Bitmap img) { Bitmap bmp = new Bitmap(img); //statement1 // some code here and return } } here is class I'm using for testing: class someotherClass { public static voide Main() { foreach (string imagePath in imagePathsArray) { using (Bitmap img1 = new Bitmap(imagePath)) { someclass.someMethod(img1); // does some more processing on `img1` } } } } Is there any memory leak with statement1? Question1: If each image size is say 10MB. Then does this bmp object occupy atleast 10MB? What I mean is, will it make completely new copy of entire image? or just refer to it? Question2:should I or should I not put the statement1 in using block? My Argument: We should not. Because using is not for freeing memory but for freeing the resources (file handle in this case). If I use it in using block. It closes file handle here encapsulated by this bmp object. It means we are also closing filehandle for the caller's img1 object. Which is not correct? As of the memory leak. No there is no scope of memory leak here. Because reference bmp is destroyed when this method is returned. Which leaves memory it refered without any pointer. So, its garbage collected. Am I right? Edit: class someclass { static Bitmap someMethod(Bitmap img) { Bitmap bmp = new Bitmap(img); //can I use `using` block on this enclosing `return bmp`; ??? // do some processing on bmp here return bmp; } }

  Read the article

• Implementing events to communicate between two processes - C

  - by Jamie Keeling

  Hello all! I have an application consisting of two windows, one communicates to the other and sends it a struct constaining two integers (In this case two rolls of a dice). I will be using events for the following circumstances: Process a sends data to process b, process b displays data Process a closes, in turn closing process b Process b closes a, in turn closing process a I have noticed that if the second process is constantly waiting for the first process to send data then the program will be just sat waiting, which is where the idea of implementing threads on each process occurred and I have started to implement this already. The problem i'm having is that I don't exactly have a lot of experience with threads and events so I'm not sure of the best way to actually implement what I want to do. Following is a small snippet of what I have so far in the producer application; Create thread: case IDM_FILE_ROLLDICE: { hDiceRoll = CreateThread( NULL, // lpThreadAttributes (default) 0, // dwStackSize (default) ThreadFunc(hMainWindow), // lpStartAddress NULL, // lpParameter 0, // dwCreationFlags &hDiceID // lpThreadId (returned by function) ); } break; The data being sent to the other process: DWORD WINAPI ThreadFunc(LPVOID passedHandle) { HANDLE hMainHandle = *((HANDLE*)passedHandle); WCHAR buffer[256]; LPCTSTR pBuf; LPVOID lpMsgBuf; LPVOID lpDisplayBuf; struct diceData storage; HANDLE hMapFile; DWORD dw; //Roll dice and store results in variable storage = RollDice(); hMapFile = CreateFileMapping( (HANDLE)0xFFFFFFFF, // use paging file NULL, // default security PAGE_READWRITE, // read/write access 0, // maximum object size (high-order DWORD) BUF_SIZE, // maximum object size (low-order DWORD) szName); // name of mapping object if (hMapFile == NULL) { dw = GetLastError(); MessageBox(hMainHandle,L"Could not create file mapping object",L"Error",MB_OK); return 1; } pBuf = (LPTSTR) MapViewOfFile(hMapFile, // handle to map object FILE_MAP_ALL_ACCESS, // read/write permission 0, 0, BUF_SIZE); if (pBuf == NULL) { MessageBox(hMainHandle,L"Could not map view of file",L"Error",MB_OK); CloseHandle(hMapFile); return 1; } CopyMemory((PVOID)pBuf, &storage, (_tcslen(szMsg) * sizeof(TCHAR))); //_getch(); MessageBox(hMainHandle,L"Completed!",L"Success",MB_OK); UnmapViewOfFile(pBuf); return 0; } I'm trying to find out how I would integrate an event with the threaded code to signify to the other process that something has happened, I've seen an MSDN article on using events but it's just confused me if anything, I'm coming up on empty whilst searching on the internet too. Thanks for any help Edit: I can only use the Create/Set/Open methods for events, sorry for not mentioning it earlier.

  Read the article

• Why isn't my Ruby object deleted when the last reference goes out of scope?

  - by Andrew Clegg

  Hi gurus, I've found a weird effect when trying to track down a memory leak in a Rails app. Can anyone explain what's going on here? Save this script as a plain Ruby script (Rails not necessary): class Fnord def to_s 'fnord' end end def test f = Fnord.new end test GC.start sleep 2 ObjectSpace.each_object do |o| puts o if o.is_a? Fnord end When I run this via ruby 1.8.7 (2009-06-12 patchlevel 174) [i486-linux] I get the following: bash $ ruby var_test fnord Although the variable f is out of scope, there are no other references to the single Fnord object, and I've garbage collected, the object still seems to exist. Is this a nefarious memory leak of some sort, or am I completely missing something about Ruby? Further, if I change the test method to this: def test f = Fnord.new f = nil end I get no output. But surely this should not change the semantics here? Many thanks!

  Read the article

• Using events in threads between processes - C

  - by Jamie Keeling

  Hello all! I have an application consisting of two windows, one communicates to the other and sends it a struct constaining two integers (In this case two rolls of a dice). I will be using events for the following circumstances: Process a sends data to process b, process b displays data Process a closes, in turn closing process b Process b closes a, in turn closing process a I have noticed that if the second process is constantly waiting for the first process to send data then the program will be just sat waiting, which is where the idea of implementing threads on each process occurred and I have started to implement this already. The problem i'm having is that I don't exactly have a lot of experience with threads and events so I'm not sure of the best way to actually implement what I want to do. Following is a small snippet of what I have so far in the producer application; Create thread: case IDM_FILE_ROLLDICE: { hDiceRoll = CreateThread( NULL, // lpThreadAttributes (default) 0, // dwStackSize (default) ThreadFunc(hMainWindow), // lpStartAddress NULL, // lpParameter 0, // dwCreationFlags &hDiceID // lpThreadId (returned by function) ); } break; The data being sent to the other process: DWORD WINAPI ThreadFunc(LPVOID passedHandle) { HANDLE hMainHandle = *((HANDLE*)passedHandle); WCHAR buffer[256]; LPCTSTR pBuf; LPVOID lpMsgBuf; LPVOID lpDisplayBuf; struct diceData storage; HANDLE hMapFile; DWORD dw; //Roll dice and store results in variable storage = RollDice(); hMapFile = CreateFileMapping( (HANDLE)0xFFFFFFFF, // use paging file NULL, // default security PAGE_READWRITE, // read/write access 0, // maximum object size (high-order DWORD) BUF_SIZE, // maximum object size (low-order DWORD) szName); // name of mapping object if (hMapFile == NULL) { dw = GetLastError(); MessageBox(hMainHandle,L"Could not create file mapping object",L"Error",MB_OK); return 1; } pBuf = (LPTSTR) MapViewOfFile(hMapFile, // handle to map object FILE_MAP_ALL_ACCESS, // read/write permission 0, 0, BUF_SIZE); if (pBuf == NULL) { MessageBox(hMainHandle,L"Could not map view of file",L"Error",MB_OK); CloseHandle(hMapFile); return 1; } CopyMemory((PVOID)pBuf, &storage, (_tcslen(szMsg) * sizeof(TCHAR))); //_getch(); MessageBox(hMainHandle,L"Completed!",L"Success",MB_OK); UnmapViewOfFile(pBuf); return 0; } I'm trying to find out how I would integrate an event with the threaded code to signify to the other process that something has happened, I've seen an MSDN article on using events but it's just confused me if anything, I'm coming up on empty whilst searching on the internet too. Thanks for any help Edit: I can only use the Create/Set/Open methods for events, sorry for not mentioning it earlier.

  Read the article

• Storing CLLocationCoordinates2D in NSMutableArray

  - by Amarsh

  After some searching, I got the following solution : ref: http://stackoverflow.com/questions/1392909/nsmutablearray-addobject-with-mallocd-struct CLLocationCoordinate2D* new_coordinate = malloc(sizeof(CLLocationCoordinate2D)); new_coordinate->latitude = latitude; new_coordinate->longitude = longitude; [points addObject:[NSData dataWithBytes:(void *)new_coordinate length:sizeof(CLLocationCoordinate2D)]]; free(new_coordinate); And access it as: CLLocationCoordinate2D* c = (CLLocationCoordinate2D*) [[points objectAtIndex:0] bytes]; However, someone claims that there is a memory leak here? Can anyone suggest me where is the leak and how to fix it. Further, is there a better way of storing a list of CLLocationCoordinate2D in NSMutableArray? Please give sample code since I am an Objective C newbie.

  Read the article

• Ideas on implementing threads and cross process communication. - C

  - by Jamie Keeling

  Hello all! I have an application consisting of two windows, one communicates to the other and sends it a struct constaining two integers (In this case two rolls of a dice). I will be using events for the following circumstances: Process a sends data to process b, process b displays data Process a closes, in turn closing process b Process b closes a, in turn closing process a I have noticed that if the second process is constantly waiting for the first process to send data then the program will be just sat waiting, which is where the idea of implementing threads on each process occured. I have already implemented a thread on the first process which currently creates the data to send to the second process and makes it available to the second process. The problem i'm having is that I don't exactly have a lot of experience with threads and events so I'm not sure of the best way to actually implement what I want to do. Following is a small snippet of what I have so far in the producer application; Rolling the dice and sending the data: case IDM_FILE_ROLLDICE: { hDiceRoll = CreateThread( NULL, // lpThreadAttributes (default) 0, // dwStackSize (default) ThreadFunc(hMainWindow), // lpStartAddress NULL, // lpParameter 0, // dwCreationFlags &hDiceID // lpThreadId (returned by function) ); } break; The data being sent to the other process: DWORD WINAPI ThreadFunc(LPVOID passedHandle) { HANDLE hMainHandle = *((HANDLE*)passedHandle); WCHAR buffer[256]; LPCTSTR pBuf; LPVOID lpMsgBuf; LPVOID lpDisplayBuf; struct diceData storage; HANDLE hMapFile; DWORD dw; //Roll dice and store results in variable storage = RollDice(); hMapFile = CreateFileMapping( (HANDLE)0xFFFFFFFF, // use paging file NULL, // default security PAGE_READWRITE, // read/write access 0, // maximum object size (high-order DWORD) BUF_SIZE, // maximum object size (low-order DWORD) szName); // name of mapping object if (hMapFile == NULL) { dw = GetLastError(); MessageBox(hMainHandle,L"Could not create file mapping object",L"Error",MB_OK); return 1; } pBuf = (LPTSTR) MapViewOfFile(hMapFile, // handle to map object FILE_MAP_ALL_ACCESS, // read/write permission 0, 0, BUF_SIZE); if (pBuf == NULL) { MessageBox(hMainHandle,L"Could not map view of file",L"Error",MB_OK); CloseHandle(hMapFile); return 1; } CopyMemory((PVOID)pBuf, &storage, (_tcslen(szMsg) * sizeof(TCHAR))); //_getch(); MessageBox(hMainHandle,L"Completed!",L"Success",MB_OK); UnmapViewOfFile(pBuf); return 0; } I'd like to think I am at least on the right lines, although for some reason when the application finishes creating the thread it hits the return DefWindowProc(hMainWindow, message, wParam, lParam); it crashes saying there's no more source code for the current location. I know there are certain ways to implement things but as I've mentioned I'm not sure if i'm doing this the right way, has anybody else tried to do the same thing? Thanks!

  Read the article

• Excel Add-in memory explosion

  - by tsinik

  I wrote a small .NET add in to excel 2007 that read data from external c++ api and display it inside an excel. The task manager shows that I'm having a memory leak (the memory usage is inflate linearly up to 250MB after whitch it throws an "Excel cannot complete this task with available resources error") but the problem disappears as soon as I minimize the excel window. The api uses delegates to return data and I update it into a dictionary. another thread is updating the excel from the dictionary every second. It is unlikely that the unmanaged code is responsible of the leak. Does anybody have an idea what can cause this? 10x!

  Read the article

• C - How to use both aio_read() and aio_write().

  - by Slav

  I implement game server where I need to both read and write. So I accept incoming connection and start reading from it using aio_read() but when I need to send something, I stop reading using aio_cancel() and then use aio_write(). Within write's callback I resume reading. So, I do read all the time but when I need to send something - I pause reading. It works for ~20% of time - in other case call to aio_cancel() fails with "Operation now in progress" - and I cannot cancel it (even within permanent while cycle). So, my added write operation never happens. How to use these functions well? What did I missed? EDIT: Used under Linux 2.6.35. Ubuntu 10 - 32 bit. Example code: void handle_read(union sigval sigev_value) { /* handle data or disconnection */ } void handle_write(union sigval sigev_value) { /* free writing buffer memory */ } void start() { const int acceptorSocket = socket(AF_INET, SOCK_STREAM, 0); struct sockaddr_in addr; memset(&addr, 0, sizeof(struct sockaddr_in)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = INADDR_ANY; addr.sin_port = htons(port); bind(acceptorSocket, (struct sockaddr*)&addr, sizeof(struct sockaddr_in)); listen(acceptorSocket, SOMAXCONN); struct sockaddr_in address; socklen_t addressLen = sizeof(struct sockaddr_in); for(;;) { const int incomingSocket = accept(acceptorSocket, (struct sockaddr*)&address, &addressLen); if(incomingSocket == -1) { /* handle error ... */} else { //say socket to append outcoming messages at writing: const int currentFlags = fcntl(incomingSocket, F_GETFL, 0); if(currentFlags < 0) { /* handle error ... */ } if(fcntl(incomingSocket, F_SETFL, currentFlags | O_APPEND) == -1) { /* handle another error ... */ } //start reading: struct aiocb* readingAiocb = new struct aiocb; memset(readingAiocb, 0, sizeof(struct aiocb)); readingAiocb->aio_nbytes = MY_SOME_BUFFER_SIZE; readingAiocb->aio_fildes = socketDesc; readingAiocb->aio_buf = mySomeReadBuffer; readingAiocb->aio_sigevent.sigev_notify = SIGEV_THREAD; readingAiocb->aio_sigevent.sigev_value.sival_ptr = (void*)mySomeData; readingAiocb->aio_sigevent.sigev_notify_function = handle_read; if(aio_read(readingAiocb) != 0) { /* handle error ... */ } } } } //called at any time from server side: send(void* data, const size_t dataLength) { //... some thread-safety precautions not needed here ... const int cancellingResult = aio_cancel(socketDesc, readingAiocb); if(cancellingResult != AIO_CANCELED) { //this one happens ~80% of the time - embracing previous call to permanent while cycle does not help: if(cancellingResult == AIO_NOTCANCELED) { puts(strerror(aio_return(readingAiocb))); // "Operation now in progress" /* don't know what to do... */ } } //otherwise it's okay to send: else { aio_write(...); } }

  Read the article

• malloc hangs in Linux

  - by Rahul

  I am using Linux on a 16 G with 2 quad core CPU. There are 8 processes which are doing some work (CPU intensive/network i/o). Out of which 4 have a memory leak (These are test conditions so no problem in having leaks here). Total space is occupied by all processes is around 15.4 G only 200 MB is free in system. Things are fine for some hours. But after that malloc hangs (for a process which doesn't have a memory leak). Its stuck for for more than 4 minutes (Note CPU is not 100% but io has gone up signficantly). Now there is no problem in the hanged process. (It has not corrupted the memory). What malloc is doing? (is it tryibg to defragment or builidng up swap space).I am using SUSE 10. Any pointers?

  Read the article

• is listening to an event of a base class safe?

  - by Gady

  base.event += this.EventHandler() is this code safe ? will it cause a leak ?

  Read the article

• Silverlight Memory Usage

  - by peter

  Hi All, Is there a way to measure the current memory usage of the silverlight plug-in from within the client side C# code? I am isolating a memory leak and it would be good to know the current memory usage of the plug-in. For instance it could be logged to a file before I clicked a button that it was using '60 mb' and after I clicked the button it was using '70 mb' etc. I could then gradually add in controls and use this technique to quantify the leak. Thanks.

  Read the article

• sorting nested list, allow only li to be sorted witin the same ul

  - by Y.G.J

  $(document).ready(function() { $("#test-list").sortable({ items: "> li", handle : '.handle', axis: 'y', opacity: 0.6, update : function () { var order = $('#test-list').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); $("#test-sub").sortable({ containment: "ul", items: "li", handle : '.handle2', axis: 'y', opacity: 0.6, update : function () { var order = $('ul').sortable('serialize'); $("#info").load("process-sortable.asp?"+order+"&id=catid&order=orderid&table=tblCats"); } }); }); <ul id="test-list"> <li id="listItem_10">first<img align="middle" src="Themes/arrow.png" class="handle" /></li> <li id="listItem_8">second<img align="middle" src="Themes/arrow.png" class="handle" /> <ul id="test-sub"> <li id="listItem_4"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> <li id="listItem_3"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> <ul id="test-sub"> <li id="listItem_9"><img align="middle" src="Themes/arrow.png" class="handle2" /></li> </ul> </li> </ul> </li> </ul> the problems i have: sorting the main ul is working but not all the time - i will try to fix that my own but if there is a problem with the code here and not the one in proccess-sortable - tell me. moving li in the main ul is ok but the sub or the sub of the sub is having problem - i can drag something from one sub to it's sub or the other way too - i don't want that to happend. i want to be able to drag li and by selecting that one that only this ul group will send to proccess-sortable to be updated - how can i catch the specific ul of li i am draging?

  Read the article

• Why does coffeescript generate classes like this?

  - by ryeguy

  Given the following coffeescript code: class Animal constructor: (@name) -> speak: (things) -> "My name is #{@name} and I like #{things}" This is generated: var Animal = (function() { function Animal(name) { this.name = name; } Animal.prototype.speak = function(things) { return "My name is " + this.name + " and I like " + things; }; return Animal; })(); But why isn't this more idiomatic code generated? var Animal = function Animal(name) { this.name = name; }; Animal.prototype.speak = function(things) { return "My name is " + this.name + " and I like " + things; }; I know that coffeescript wraps a lot of stuff in anonymous functions to control scope leak, but what could leak here?

  Read the article

• memory management question -- releasing an object which has to be returned

  - by ulag

  Hi, I have an NSMutableArray called playlist. This is in a method called getAllPlaylists. The code is something like this: -(NSMutableArray *)getAllPlaylists { //playlist is an instance variable playlist = [[NSMutableArray alloc] init]; //memory leak here . . //some code here which populates the playlist array [playlist addObject: object1]; . . return playlist; } The array allocation step of playlist is causing a memory leak. In such a scenario where can i release this array? Or can i avoid allocation n initialization of playlist here by doing something else?

  Read the article

• Understanding MotionEvent to implement a virtual DPad and Buttons on Android (Multitouch)

  - by Fabio Gomes

  I once implemented a DPad in XNA and now I'm trying to port it to android, put, I still don't get how the touch events work in android, the more I read the more confused I get. Here is the code I wrote so far, it works, but guess that it will only handle one touch point. public boolean onTouchEvent(MotionEvent event) { if (event.getPointerCount() == 0) return true; int touchX = -1; int touchY = -1; pressedDirection = DPadDirection.None; int actionCode = event.getAction() & MotionEvent.ACTION_MASK; if (actionCode == MotionEvent.ACTION_UP) { if (event.getPointerId(0) == idDPad) { pressedDirection = DPadDirection.None; idDPad = -1; } } else if (actionCode == MotionEvent.ACTION_DOWN || actionCode == MotionEvent.ACTION_MOVE) { touchX = (int)event.getX(); touchY = (int)event.getY(); if (rightRect.contains(touchX, touchY)) pressedDirection = DPadDirection.Right; else if (leftRect.contains(touchX, touchY)) pressedDirection = DPadDirection.Left; else if (upRect.contains(touchX, touchY)) pressedDirection = DPadDirection.Up; else if (downRect.contains(touchX, touchY)) pressedDirection = DPadDirection.Down; if (pressedDirection != DPadDirection.None) idDPad = event.getPointerId(0); } return true; } The logic is: Test if there is a "DOWN" or "MOVED" event, then if one of this events collides with one of the 4 rectangles of my DPad, I set the pressedDirectin variable to the side of the touch event, then I read the DPad actual pressed direction in my Update() event on another class. The thing I'm not sure, is how do I get track of the touch points, I store the ID of the touch point which generated the diretion that is being stored (last one), so when this ID is released I set the Direction to None, but I'm really confused about how to handle this in android, here is the code I had in XNA: public override void Update(GameTime gameTime) { PressedDirection = DpadDirection.None; foreach (TouchLocation _touchLocation in TouchPanel.GetState()) { if (_touchLocation.State == TouchLocationState.Released) { if (_touchLocation.Id == _idDPad) { PressedDirection = DpadDirection.None; _idDPad = -1; } } else if (_touchLocation.State == TouchLocationState.Pressed || _touchLocation.State == TouchLocationState.Moved) { _intersectRect.X = (int)_touchLocation.Position.X; _intersectRect.Y = (int)_touchLocation.Position.Y; _intersectRect.Width = 1; _intersectRect.Height = 1; if (_intersectRect.Intersects(_rightRect)) PressedDirection = DpadDirection.Right; else if (_intersectRect.Intersects(_leftRect)) PressedDirection = DpadDirection.Left; else if (_intersectRect.Intersects(_upRect)) PressedDirection = DpadDirection.Up; else if (_intersectRect.Intersects(_downRect)) PressedDirection = DpadDirection.Down; if (PressedDirection != DpadDirection.None) { _idDPad = _touchLocation.Id; continue; } } } base.Update(gameTime); } So, first of all: Am I doing this correctly? if not, why? I don't want my DPad to handle multiple directions, but I still didn't get how to handle the multiple touch points, is the event called for every touch point, or all touch points comes in a single call? I still don't get it.

  Read the article

• Interviews Gone Bad.....Now What Do I Do?

  - by david.talamelli

  We have all done it at some stage of our working careers - you know those times when you leave an interview and then you think to yourself "why didn't I ask that question" or "I can't believe I said that" or "how could I have forgotten to say that". It happens to everyone but how you handle things moving forwards could be critical in helping you land that dream job. There is nothing better than seeing that dream job with the dream company that you are looking to work for advertised (or in some cases getting called by the Recruiter to let you know about that job). The role may seem perfect and it could be just what you are looking for and it is with the right company as well. You have sent in your resume and have subsequently had one, two or maybe three interviews for the role. After each step of the process you get a little bit more excited about the role as you start to think about your work day in your new role/company. Then it happens, you get it: you get The Phone Call to inform you that you have not been successful in securing the position that you have invested so much time and effort into. It can be disappointing to hear this news but what you do next is important in potentially keeping that door open for future opportunities with that company. How you handle yourself in this situation is important: if any of you remember the Choose Your Own Adventure Books do you: Tell the Recruiter (maybe get aggressive) they are wrong in their assessment and that you are the right candidate for the role Switch off and say ok thanks and hang up without engaging in any further dialogue Thank the company for their time and enquire if there may be any other opportunities in the future to explore If you chose the first option - the company in question may consider whether or not to look at you for other opportunities. How you handle yourself in the recruitment process could be an indication of how you would deal with clients/colleagues in your role and the impression that you leave a potential employer may be what sticks in their mind when they think of you (eg: isn't that the person who couldn't handle it when we told him he wasn't right for our role). The second option potentially produces a similar outcome. If you rush to get off the phone, the company may come back to you to talk about other roles when they come up, but you also leave open the potential thought with the company you were only interested in that role and therefore not interested in any other opportunities. Why take the risk of the company thinking that and potentially not getting back to you in the future. By picking the third option, you actively engage with the company and keep the dialogue open for future discussions. Ok, so you didn't get the role you interviewed for - you don't know who else the company may have been interviewing - maybe they found someone who was a better fit, or maybe there were too many boxes you didn't tick to step straight into that specific role. Take a deep breath and keep the company engaged. You are fresh in their mind - take advantage of that fact and let them know that while you respect their decision, that you are still interested in the company and would like to be kept in mind for future roles. Ask if it is ok to keep in touch and when they would like to keep in touch, as long as you are interested let them know you are still interested. You do need to balance that though if you come across as too keen or start stalking people - it could equally damage your brand. Companies normally have more than one open role. New roles are created all the time, circumstances change and hiring people is not a static business, it changes course from everyone's best laid initial plans. If you didn't get that initial role you wanted, keep the door open with that company so that when those new roles do come up or when circumstances do change you have already laid the ground to step into those new positions.

  Read the article

• Handling "related" work within a single agile work item

  - by Tesserex

  I'm on a project team of 4 devs, myself included. We've been having a long discussion on how to handle extra work that comes up in the course of a single work item. This extra work is usually things that are slightly related to the task, but not always necessary to accomplish the goal of the item (that may be an opinion). Examples include but are not limited to: refactoring of the code changed by the work item refactoring code neighboring the code changed by the item re-architecting the larger code area around the ticket. For example if an item has you changing a single function, you realize the entire class now could be redone to better accommodate this change. improving the UI on a form you just modified When this extra work is small we don't mind. The problem is when this extra work causes a substantial extension of the item beyond the original feature point estimation. Sometimes a 5 point item will actually take 13 points of time. In one case we had a 13 point item that in retrospect could have been 80 points or more. There are two options going around in our discussion for how to handle this. We can accept the extra work in the same work item, and write it off as a mis-estimation. Arguments for this have included: We plan for "padding" at the end of the sprint to account for this sort of thing. Always leave the code in better shape than you found it. Don't check in half-assed work. If we leave refactoring for later, it's hard to schedule and may never get done. You are in the best mental "context" to handle this work now, since you're waist deep in the code already. Better to get it out of the way now and be more efficient than to lose that context when you come back later. We draw a line for the current work item, and say that the extra work goes into a separate ticket. Arguments include: Having a separate ticket allows for a new estimation, so we aren't lying to ourselves about how many points things really are, or having to admit that all of our estimations are terrible. The sprint "padding" is meant for unexpected technical challenges that are direct barriers to completing the ticket requirements. It is not intended for side items that are just "nice-to-haves". If you want to schedule refactoring, just put it at the top of the backlog. There is no way for us to properly account for this stuff in an estimation, since it seems somewhat arbitrary when it comes up. A code reviewer might say "those UI controls (which you actually didn't modify in this work item) are a bit confusing, can you fix that too?" which is like an hour, but they might say "Well if this control now inherits from the same base class as the others, why don't you move all of this (hundreds of lines of) code into the base and rewire all this stuff, the cascading changes, etc.?" And that takes a week. It "contaminates the crime scene" by adding unrelated work into the ticket, making our original feature point estimates meaningless. In some cases, the extra work postpones a check-in, causing blocking between devs. Some of us are now saying that we should decide some cut off, like if the additional stuff is less than 2 FP, it goes in the same ticket, if it's more, make it a new ticket. Since we're only a few months into using Agile, what's the opinion of all the more seasoned Agile veterans around here on how to handle this?

  Read the article

• SPTI problem with Mode Select

  - by Bob Murphy

  I'm running into a problem in which an attempt to do a "Mode Select" SCSI command using SPTI is returning an error status of 0x02 ("Check Condition"), and hope someone here might have some tips or suggestions. The code in question is intended to work with at a custom SCSI device. I wrote the original support for it using ASPI under WinXP, and am converting it to work with SPTI under 64-bit Windows 7. Here's the problematic code - and what's happening is, sptwb.spt.ScsiStatus is 2, which is a "Check Condition" error. Unfortunately, the device in question doesn't return useful information when you do a "Request Sense" after this problem occurs, so that's no help. void MSSModeSelect(const ModeSelectRequestPacket& inRequest, StatusResponsePacket& outResponse) { IPC_LOG("MSSModeSelect(): PathID=%d, TargetID=%d, LUN=%d", inRequest.m_Device.m_PathId, inRequest.m_Device.m_TargetId, inRequest.m_Device.m_Lun); int adapterIndex = inRequest.m_Device.m_PathId; HANDLE adapterHandle = prvOpenScsiAdapter(inRequest.m_Device.m_PathId); if (adapterHandle == INVALID_HANDLE_VALUE) { outResponse.m_Status = eScsiAdapterErr; return; } SCSI_PASS_THROUGH_WITH_BUFFERS sptwb; memset(&sptwb, 0, sizeof(sptwb)); #define MODESELECT_BUF_SIZE 32 sptwb.spt.Length = sizeof(SCSI_PASS_THROUGH); sptwb.spt.PathId = inRequest.m_Device.m_PathId; sptwb.spt.TargetId = inRequest.m_Device.m_TargetId; sptwb.spt.Lun = inRequest.m_Device.m_Lun; sptwb.spt.CdbLength = CDB6GENERIC_LENGTH; sptwb.spt.SenseInfoLength = 0; sptwb.spt.DataIn = SCSI_IOCTL_DATA_IN; sptwb.spt.DataTransferLength = MODESELECT_BUF_SIZE; sptwb.spt.TimeOutValue = 2; sptwb.spt.DataBufferOffset = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS,ucDataBuf); sptwb.spt.Cdb[0] = SCSIOP_MODE_SELECT; sptwb.spt.Cdb[4] = MODESELECT_BUF_SIZE; DWORD length = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS,ucDataBuf) + sptwb.spt.DataTransferLength; memset(sptwb.ucDataBuf, 0, sizeof(sptwb.ucDataBuf)); sptwb.ucDataBuf[2] = 0x10; sptwb.ucDataBuf[16] = (BYTE)0x01; ULONG bytesReturned = 0; BOOL okay = DeviceIoControl(adapterHandle, IOCTL_SCSI_PASS_THROUGH, &sptwb, sizeof(SCSI_PASS_THROUGH), &sptwb, length, &bytesReturned, FALSE); DWORD gle = GetLastError(); IPC_LOG(" DeviceIoControl() %s", okay ? "worked" : "failed"); if (okay) { outResponse.m_Status = (sptwb.spt.ScsiStatus == 0) ? eOk : ePrinterStatusErr; } else { outResponse.m_Status = eScsiPermissionsErr; } CloseHandle(adapterHandle); } A few more remarks, for what it's worth: This is derived from some old ASPI code that does the "Mode Select" flawlessly. This routine opens \\.\SCSI<whatever> at the beginning, via prvOpenScsiAdapter(), and closes the handle at the end. All the other routines for dealing with the device do the same thing, including the routine to do "Reserve Unit". Is this a good idea under SPTI, or should the call to "Reserve Unit" leave the handle open, so this routine and others in the sequence can use the same handle? This uses the IOCTL_SCSI_PASS_THROUGH. Should "Mode Select" use IOCTL_SCSI_PASS_THROUGH_DIRECT instead? Thanks in advance - any help will be greatly appreciated.

  Read the article

• Please Help - PHP Form, when no text is entered [migrated]

  - by Joe Turner

  I'm creating a mobile landing page and I have also created a form that allows me to create more, by duplicating a folder that's host to a template file. The script then takes you to a page where you input the company details one by one and press submit. Then the page is created. My problem is, when a field is left out (YouTube for instance), the button is created and is blank. I would like there to be a default text for when there is no text. I've tried a few things and have been struggling to make this work for DAYS! <?php $company = $_POST["company"]; $phone = $_POST["phone"]; $colour = $_POST["colour"]; $email = $_POST["email"]; $website = $_POST["website"]; $video = $_POST["video"]; ?> <div id="contact-area"> <form method="post" action="generate.php"><br> <input type="text" name="company" placeholder="Company Name" /><br> <input type="text" name="slogan" placeholder="Slogan" /><br> <input class="color {required:false}" name="colour" placeholder="Company Colour"><br> <input type="text" name="phone" placeholder="Phone Number" /><br> <input type="text" name="email" placeholder="Email Address" /><br> <input type="text" name="website" placeholder="Full Website - Include http://" /><br> <input type="text" name="video" placeholder="Video URL" /><br> <input type="submit" value="Generate QuickLinks" style="background:url(images/submit.png) repeat-x; color:#FFF"/> </form> That's the form. It takes the variables and post's them to the file below. <?php $File = "includes/details.php"; $Handle = fopen($File, 'w'); ?> <?php $File = "includes/details.php"; $Handle = fopen($File, 'w'); $Data = "<div id='logo'> <h1 style='color:#$_POST[colour]'>$_POST[company]</h1> <h2>$_POST[slogan]</h2> </div> <ul data-role='listview' data-inset='true' data-theme='b'> <li style='background-color:#$_POST[colour]'><a href='tel:$_POST[phone]'>Phone Us</a></li> <li style='background-color:#$_POST[colour]'><a href='mailto:$_POST[email]'>Email Us</a></li> <li style='background-color:#$_POST[colour]'><a href='$_POST[website]'>View Full Website</a></li> <li style='background-color:#$_POST[colour]'><a href='$_POST[video]'>Watch Us</a></li> </ul> \n"; fwrite($Handle, $Data); fclose($Handle); ?> and there is what the form turns into. I need there to be a default link put in incase the field is left blank, witch it is sometimes. Thanks in advance guys.

  Read the article

< Previous Page | 69 70 71 72 73 74 75 76 77 78 79 80  | Next Page >