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• dynamic memory allocation problem

  - by wantobegeek

  i am working on a program that requires me to make use of 4 matrices sized [1000][1000]. i have created them using malloc().But when I try running the program ..it just crashes and the memory usage shoots upto 2.5 GB.Pls suggest any solution as soon as possible.I wud be grateful..

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• jQuery.param() - doesn't serialize javascript Date objects?

  - by ehahn9

  jQuery.param({foo: 1}); // => "foo=1" - SUCCESS! jQuery.param({bar: new Date()}); // => "" - OUCH! There is no problem with encodeURIComponent(new Date()), which is what I would have thought param is calling for each member. Also, explicitly using "traditional" param (e.g. jQuery.param(xxx, true)) DOES serialize the date, but alas, that isn't of much help since my data structure isn't flat. Is this because typeof(Date) == "object" and param tries to descend into it to find scalar values? How might one realistically serialize an object that happens to have Date's in it for $.post() etc.?

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• Opinions on collision detection objects with a moving scene

  - by Evan Teran

  So my question is simple, and I guess it boils down to how anal you want to be about collision detection. To keep things simple, lets assume we're talking about 2D sprites defined by a bounding box. In addition, let's assume that my sprite object has a function to detect collisions like this: S.collidesWith(other); Finally the scene is moving and "walls" in the scene can move, an object may not touch a wall. So a simple implementation might look like this (psuedo code): moveWalls(); moveSprite(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } The problem with this is that if the sprite and wall move towards each other, depending on the circumstances (such as diagonal moment). They may pass though each other (unlikely but could happen). So I may do this instead. moveWalls(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } moveSprite(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } This takes care of the passing through each other issue, but another rare issue comes up. If they are adjacent to each other (literally the next pixel) and both the wall and the sprite are moving left, then I will get an invalid collision since the wall moves, checks for collision (hit) then the sprite is moved. Which seems unfair. In addition, to that, the redundant collision detection feels very inefficient. I could give the player movement priority alleviating the first issue but it is still checking twice. moveSprite(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } moveWalls(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } Am I simply over thinking this issue, should this just be chalked up to "it'll happen rare enough that no one will care"? Certainly looking at old sprite based games, I often find situations where the collision detection has subtle flaws, but I figure by now we can do better :-P. What are people's thoughts?

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• Dynamic resize with MPlayer and PyGTK

  - by alex

  Hi everyone; I've wrote a piece of code in python and pygtk for an embeded mplayer in a gui. I assume I use GtkSocket and the slave mode of mplayer with the -wid option. But I've got an issue, when the size of my GTK window is smaller than my stream, the stream appears to be cropped. And when the size of my window is bigger than my stream, the stream appear centred inside the widget which embed MPlayer. (a gtk.Frame but I've also try with a gtk.DrawingArea) I would like to know how I can get my stream resize dynamically depending on the window's size. I don't want to use Glade or any GUI builder. Thanks in advance for any help, and please excuse my poor english.

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• Python - pickling fails for numpy.void objects

  - by I82Much

  >>> idmapfile = open("idmap", mode="w") >>> pickle.dump(idMap, idmapfile) >>> idmapfile.close() >>> idmapfile = open("idmap") >>> unpickled = pickle.load(idmapfile) >>> unpickled == idMap False idMap[1] {1537: (552, 1, 1537, 17.793827056884766, 3), 1540: (4220, 1, 1540, 19.31205940246582, 3), 1544: (592, 1, 1544, 18.129131317138672, 3), 1675: (529, 1, 1675, 18.347782135009766, 3), 1550: (4048, 1, 1550, 19.31205940246582, 3), 1424: (1528, 1, 1424, 19.744396209716797, 3), 1681: (1265, 1, 1681, 19.596025466918945, 3), 1560: (3457, 1, 1560, 20.530569076538086, 3), 1690: (477, 1, 1690, 17.395542144775391, 3), 1691: (554, 1, 1691, 13.446117401123047, 3), 1436: (3010, 1, 1436, 19.596025466918945, 3), 1434: (3183, 1, 1434, 19.744396209716797, 3), 1441: (3570, 1, 1441, 20.589576721191406, 3), 1435: (476, 1, 1435, 19.640911102294922, 3), 1444: (527, 1, 1444, 17.98480224609375, 3), 1478: (1897, 1, 1478, 19.596025466918945, 3), 1575: (614, 1, 1575, 19.371648788452148, 3), 1586: (2189, 1, 1586, 19.31205940246582, 3), 1716: (3470, 1, 1716, 19.158674240112305, 3), 1590: (2278, 1, 1590, 19.596025466918945, 3), 1463: (991, 1, 1463, 19.31205940246582, 3), 1594: (1890, 1, 1594, 19.596025466918945, 3), 1467: (1087, 1, 1467, 19.31205940246582, 3), 1596: (3759, 1, 1596, 19.744396209716797, 3), 1602: (3011, 1, 1602, 20.530569076538086, 3), 1547: (490, 1, 1547, 17.994071960449219, 3), 1605: (658, 1, 1605, 19.31205940246582, 3), 1606: (1794, 1, 1606, 16.964881896972656, 3), 1719: (1826, 1, 1719, 19.596025466918945, 3), 1617: (583, 1, 1617, 11.894925117492676, 3), 1492: (3441, 1, 1492, 20.500667572021484, 3), 1622: (3215, 1, 1622, 19.31205940246582, 3), 1628: (2761, 1, 1628, 19.744396209716797, 3), 1502: (1563, 1, 1502, 19.596025466918945, 3), 1632: (1108, 1, 1632, 15.457141876220703, 3), 1468: (3779, 1, 1468, 19.596025466918945, 3), 1642: (3970, 1, 1642, 19.744396209716797, 3), 1518: (612, 1, 1518, 18.570245742797852, 3), 1647: (854, 1, 1647, 16.964881896972656, 3), 1650: (2099, 1, 1650, 20.439058303833008, 3), 1651: (540, 1, 1651, 18.552841186523438, 3), 1653: (613, 1, 1653, 19.237197875976563, 3), 1532: (537, 1, 1532, 18.885730743408203, 3)} >>> unpickled[1] {1537: (64880, 1638, 56700, -1.0808743559293829e+18, 152), 1540: (64904, 1638, 0, 0.0, 0), 1544: (54472, 1490, 0, 0.0, 0), 1675: (6464, 1509, 0, 0.0, 0), 1550: (43592, 1510, 0, 0.0, 0), 1424: (43616, 1510, 0, 0.0, 0), 1681: (0, 0, 0, 0.0, 0), 1560: (400, 152, 400, 2.1299736657737219e-43, 0), 1690: (408, 152, 408, 2.7201111331839077e+26, 34), 1435: (424, 152, 61512, 1.0122952080313192e-39, 0), 1436: (400, 152, 400, 20.250289916992188, 3), 1434: (424, 152, 62080, 1.0122952080313192e-39, 0), 1441: (400, 152, 400, 12.250144958496094, 3), 1691: (424, 152, 42608, 15.813941955566406, 3), 1444: (400, 152, 400, 19.625289916992187, 3), 1606: (424, 152, 42432, 5.2947192852601414e-22, 41), 1575: (400, 152, 400, 6.2537390010262572e-36, 0), 1586: (424, 152, 42488, 1.0122601755697111e-39, 0), 1716: (400, 152, 400, 6.2537390010262572e-36, 0), 1590: (424, 152, 64144, 1.0126357235581501e-39, 0), 1463: (400, 152, 400, 6.2537390010262572e-36, 0), 1594: (424, 152, 32672, 17.002994537353516, 3), 1467: (400, 152, 400, 19.750289916992187, 3), 1596: (424, 152, 7176, 1.0124003054161436e-39, 0), 1602: (400, 152, 400, 18.500289916992188, 3), 1547: (424, 152, 7000, 1.0124003054161436e-39, 0), 1605: (400, 152, 400, 20.500289916992188, 3), 1478: (424, 152, 42256, -6.0222748507426518e+30, 222), 1719: (400, 152, 400, 6.2537390010262572e-36, 0), 1617: (424, 152, 16472, 1.0124283313854301e-39, 0), 1492: (400, 152, 400, 6.2537390010262572e-36, 0), 1622: (424, 152, 35304, 1.0123190301052127e-39, 0), 1628: (400, 152, 400, 6.2537390010262572e-36, 0), 1502: (424, 152, 63152, 19.627988815307617, 3), 1632: (400, 152, 400, 19.375289916992188, 3), 1468: (424, 152, 38088, 1.0124213248931084e-39, 0), 1642: (400, 152, 400, 6.2537390010262572e-36, 0), 1518: (424, 152, 63896, 1.0127436235399031e-39, 0), 1647: (400, 152, 400, 6.2537390010262572e-36, 0), 1650: (424, 152, 53424, 16.752857208251953, 3), 1651: (400, 152, 400, 19.250289916992188, 3), 1653: (424, 152, 50624, 1.0126497365427934e-39, 0), 1532: (400, 152, 400, 6.2537390010262572e-36, 0)} The keys come out fine, the values are screwed up. I tried same thing loading file in binary mode; didn't fix the problem. Any idea what I'm doing wrong? Edit: Here's the code with binary. Note that the values are different in the unpickled object. >>> idmapfile = open("idmap", mode="wb") >>> pickle.dump(idMap, idmapfile) >>> idmapfile.close() >>> idmapfile = open("idmap", mode="rb") >>> unpickled = pickle.load(idmapfile) >>> unpickled==idMap False >>> unpickled[1] {1537: (12176, 2281, 56700, -1.0808743559293829e+18, 152), 1540: (0, 0, 15934, 2.7457842047810522e+26, 108), 1544: (400, 152, 400, 4.9518498821046956e+27, 53), 1675: (408, 152, 408, 2.7201111331839077e+26, 34), 1550: (456, 152, 456, -1.1349175514578289e+18, 152), 1424: (432, 152, 432, 4.5939047815653343e-40, 11), 1681: (408, 152, 408, 2.1299736657737219e-43, 0), 1560: (376, 152, 376, 2.1299736657737219e-43, 0), 1690: (376, 152, 376, 2.1299736657737219e-43, 0), 1435: (376, 152, 376, 2.1299736657737219e-43, 0), 1436: (376, 152, 376, 2.1299736657737219e-43, 0), 1434: (376, 152, 376, 2.1299736657737219e-43, 0), 1441: (376, 152, 376, 2.1299736657737219e-43, 0), 1691: (376, 152, 376, 2.1299736657737219e-43, 0), 1444: (376, 152, 376, 2.1299736657737219e-43, 0), 1606: (25784, 2281, 376, -3.2883343074537754e+26, 34), 1575: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1586: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1716: (24240, 2281, 376, -3.0093091599657311e-35, 26), 1590: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1463: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1594: (24240, 2281, 376, -4123208450048.0, 196), 1467: (25784, 2281, 376, 2.1299736657737219e-43, 0), 1596: (25784, 2281, 376, 2.1299736657737219e-43, 0), 1602: (25784, 2281, 376, -5.9963281433905448e+26, 76), 1547: (25784, 2281, 376, -218106240.0, 139), 1605: (25784, 2281, 376, -3.7138649803377281e+27, 56), 1478: (376, 152, 376, 2.1299736657737219e-43, 0), 1719: (25784, 2281, 376, 2.1299736657737219e-43, 0), 1617: (25784, 2281, 376, -1.4411779941597184e+17, 237), 1492: (25784, 2281, 376, 2.8596493694487798e-30, 80), 1622: (25784, 2281, 376, 184686084096.0, 93), 1628: (1336, 152, 1336, 3.1691839245470052e+29, 179), 1502: (1272, 152, 1272, -5.2042207205116645e-17, 99), 1632: (1208, 152, 1208, 2.1299736657737219e-43, 0), 1468: (1144, 152, 1144, 2.1299736657737219e-43, 0), 1642: (1080, 152, 1080, 2.1299736657737219e-43, 0), 1518: (1016, 152, 1016, 4.0240902787680023e+35, 145), 1647: (952, 152, 952, -985172619034624.0, 237), 1650: (888, 152, 888, 12094787289088.0, 66), 1651: (824, 152, 824, 2.1299736657737219e-43, 0), 1653: (760, 152, 760, 0.00018310768064111471, 238), 1532: (696, 152, 696, 8.8978061885676389e+26, 125)} OK I've isolated the problem, but don't know why it's so. First, apparently what I'm pickling are not tuples (though they look like it), but instead numpy.void types. Here is a series to illustrate the problem. first = run0.detections[0] >>> first (1, 19, 1578, 82.637763977050781, 1) >>> type(first) <type 'numpy.void'> >>> firstTuple = tuple(first) >>> theFile = open("pickleTest", "w") >>> pickle.dump(first, theFile) >>> theTupleFile = open("pickleTupleTest", "w") >>> pickle.dump(firstTuple, theTupleFile) >>> theFile.close() >>> theTupleFile.close() >>> first (1, 19, 1578, 82.637763977050781, 1) >>> firstTuple (1, 19, 1578, 82.637764, 1) >>> theFile = open("pickleTest", "r") >>> theTupleFile = open("pickleTupleTest", "r") >>> unpickledTuple = pickle.load(theTupleFile) >>> unpickledVoid = pickle.load(theFile) >>> type(unpickledVoid) <type 'numpy.void'> >>> type(unpickledTuple) <type 'tuple'> >>> unpickledTuple (1, 19, 1578, 82.637764, 1) >>> unpickledTuple == firstTuple True >>> unpickledVoid == first False >>> unpickledVoid (7936, 1705, 56700, -1.0808743559293829e+18, 152) >>> first (1, 19, 1578, 82.637763977050781, 1)

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• session management: problem displaying username in the header

  - by aeonsleo

  hi, I am working on a simple login and logout module for my website without any security. I am using wamp on a windows xp machine. I am creating session when a user submits the login informaton it redirects to a process.php file which creates the session variables and starts session. Now if the login is successful user is redirected to the welcome page which includes a header file(which displays the header involving signin logout help options) The problem is the header is not changing the signin link to logout as the user logs successfully. The below code is from process.php which initiates a login. $username = $_POST['username']; $password = $_POST['password']; //echo "{$username}:{$password}"; $connection = mysql_connect("localhost","root",""); if(!$connection) { die("Database Connection Failed".mysql_error()); } $db_select = mysql_select_db("tester",$connection); if(!$db_select) { die("Database Selection Failed".mysql_error()); } $result = mysql_query("SELECT * FROM user",$connection); if(!$result) { die("Database Selection Failed".mysql_error()); } $q = "SELECT * FROM user " ."WHERE Name='".$username."' AND Password='".$password. "' "; // Run query $r = mysql_query($q); if ( $obj = @mysql_fetch_object($r) ) { session_start(); // Login good, create session variables $_SESSION["valid_id"] = session_id(); $_SESSION["valid_user"] = $_POST["username"]; $_SESSION["valid_time"] = time(); Header('Location: welcome.php'); The following code is from header.php which is included in welcome.php </div> <div id = "userdetail"> <?php if(isset($_SESSION["valid_user"])) { echo($_SESSION["valid_user"]." " ); echo("<a href=logout.php>Logout</a>"); } else { echo("<a href = login.php>Sign In</a>"); } ?> | Help | Search <input type = "text" name = "searchbox" value = "" /> </div> </div>

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• RIA Services and multiple/dynamic "Include" strategies

  - by user326526

  As an example, assume the following simple model: public class Order { public List<LineItem> LineItems { get; set; } public List<Fee> Fees { get; set; } } public class LineItem { } public class Fee { } With RIA Services, if I want to retrieve an Order and include all of it's line items in the same network call, I can statically place an [Include] attribute on the above LineItems collection. This works great for a single scenario, but what happens when I need multiple "include strategies"? For instance, one situation might call for including the Fees collection and NOT the LineItems collection. Is there any way with RIA Services to control what's included at runtime without redefining your model and/or creating dtos with the attributes statically placed for each use-case?

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• Passing objects by reference or not in C#

  - by Piku

  Suppose I have a class like this: public class ThingManager { List<SomeClass> ItemList; public void AddToList (SomeClass Item) { ItemList.Add(Item); } public void ProcessListItems() { // go through list one item at a time, get item from list, // modify item according to class' purpose } } Assume "SomeClass" is a fairly large class containing methods and members that are quite complex (List<s and arrays, for example) and that there may be a large quantity of them, so not copying vast amounts of data around the program is important. Should the "AddToList" method have "ref" in it or not? And why? It's like trying to learn pointers in C all over again ;-) (which is probably why I am getting confused, I'm trying to relate these to pointers. In C it'd be "SomeClass *Item" and a list of "SomeClass *" variables)

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• CSS Dynamic Margin on Window Resize

  - by korymath

  Can I dynamically ensure that the content always remains centered in the window pane on this website? Right now it uses a static margin-left on the .items class, and it uses jquery tools. http://andstones.ca/newsite/ Can I do it in just CSS or CSS and Javascript? Thanks, Kory

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• Custom dynamic listview in wpf for showing combobox ?

  - by Indigo Praveen

  Hi All, I want to create an application in WPF in which I have to create a gridview kind of control and in that I'll have two columns, first column is fixed but in the second column I have to create comboboxes at runtime. For example if I have a setting like <key="Level" Value="1,2,3,4,5"/> then the first column will have Level and the second column will have a combobox with values 1,2,3,4,5. Can anyone please suggest me the right WPF control to use in this scenario and how it can be done ?

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• How to add dimensions to dynamic img elements (Updated)

  - by Mohammad

  I use a Json call to get a list of image addresses, then I add them individually to a div like this. Unfortunately the image dimension is not part of the Json information. <div id="container"> <img src="A.jpg" alt="" /> <img src="B.jpg" alt="" /> ... </div> Do any of you JQuery geniuses know of a code that would flawlessly and dynamically add the true Width and Height to each img element in the container as soon as each individual one is rendered? I was thinking maybe the code could do a image width check width > 0 to evaluate when the image has actually been rendered, then fire. But I wouldn't know how to go about that and make it work stably. How is the best way of going about this? Thank you so much! Update, As the answers point out, adding Width or Height to the elements is pretty routine. The problem here is actually writing a code that would know when to do that. And evaluate that condition for each image not the page as a whole.

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• Dynamic sql vs stored procedures - pros and cons?

  - by skyeagle

  I have read many strong views (both for and against) SPs or DS. I am writing a query engine in C++ (mySQL backend for now, though I may decide to go with a C++ ORM). I cant decide whether to write a SP, or to dynamically creat the SQL and send the query to the db engine.# Any tips on how to decide?

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• how to create a dynamic link panel in wordpress

  - by amit

  i am very new to wordpress. I have a div for links and I want to be able to add links to that div from the wordpress admin panel. How should I do it?

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• Android MP3 playback with dynamic tempo adjustment

  - by Nitramz

  Any ideas how to do this? For example with NDK or something else.

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• C# Type conversion between two similar Datatable objects

  - by Ali

  I have .NET project with sync framework and two separate Datasets for MS SQL and Compact SQL. in my base class I have a generic DataTable object. in my derived classed I assign Typed DataTable to the generic object based on whether the application is operating online or offline: example: if (online) _dataTable = new MSSQLDataSet.Customer; else _dataTable = new CompactSQLDataSet.Customer; Now every where in my code i have to check and do a cast based on the current network mode like this: public void changeCustomerID(int ID) { if (online) (MSSQLDataSet.CustomerDataTable)_dataTable)[i].CustomerID = value; else (CompactMSSQLDataSet.CustomerDataTable)_dataTable)[i].CustomerID = value; } but I don't think this is very efficient and I believe it can be done in a smarter way to only use one line of code by dynamically getting the Type of _dataTable on the run time. my problem is at the design time, in order to acess datatable porperties such as "CustomerID" it has to be casted to either MSSQLDataSet.CustomerDataTable or CompactMSSQLDataSet.CustomerDataTable. Is there a way to have a function or a operator to convert the _datatable to its runtime type but still be able to use it's design time properties which are the same between the two types? something like: ((aType)_dataTable)[i].CustomerID = value; //or GetRuntimeType(_dataTable)[i].CustomerID = value;

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• Access Controller Context/ TempData from business objects

  - by thanikkal

  I am trying to build a session/tempdata provider that can be swapped. The default provider will work on top of asp.net mvc and it needed to access the .net mvc TempData from the business object class. I know the tempdata is available through the controller context, but i cant seem to find if that is exposed through HttpContext or something. I dont really want to pass the Controller context as an argument as that would dilute my interface definition since only asp.net based session provider needs this, other (using NoSQL DB etc) doesn't care about Controller Context. To clarify further, adding little more code here. my ISession interface look like this. and when this code goes to production, the session/tempdata is expected to work using NoSql db. But i also like to have another implementation that works on top of asp.net mvc session/tempdata for my dev testing etc. public interface ISession { T GetTempData<T>(string key); void PutTempData<T>(string key, T value); T GetSessiondata<T>(string key); void PutSessiondata<T>(string key, T value); }

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• Using __str__ representation for printing objects in containers in Python

  - by BobDobbs

  I've noticed that when an instance with an overloaded str method is passed to the print() function as an argument, it prints as intended. However, when passing a container that contains one of those instances to print(), it uses the repr method instead. That is to say, print(x) displays the correct string representation of x, and print(x, y) works correctly, but print([x]) or print((x, y)) prints the repr representation instead. First off, why does this happen? Secondly, is there a way to correct that behavior of print() in this circumstance?

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• Javascript: Passing large objects or strings between function considered a bad practice

  - by Mr. Smee

  Is it considered a bad practice to pass around a large string or object (lets say from an ajax response) between functions? Would it be beneficial in any way save the response in a variable and keep reusing that variable? So in the code it would be something like this: var response; $.post(url, function(resp){ response = resp; }) function doSomething() { // do something with the response here } vs $.post(url, function(resp){ doSomething(resp); }) function doSomething(resp) { // do something with the resp here } Assume resp is a large object or string and it can be passed around between multiple functions.

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• Memory management in iphone cocos2d

  - by muthu

  i am iphone developer very new to this field....i am developing a ebook app in iphone using cocos2d...i use more than 150 images(i guess) the problem while turning from one page to another images get hanged randomly...... i tried this also [[TextureMgr sharedTextureMgr] removeAllTextures]; but went in vain...i guess the the problem is with the memory.....this my coding for all the pages -(id)init { if( (self=[super init] )) { self.isTouchEnabled = YES; [SimpleAudioEngine sharedEngine]; NSLog(@"b4 cover"); Sprite *bg1 = [Sprite spriteWithFile:@"a.jpg"]; bg1.anchorPoint = CGPointZero; [self addChild:bg1 z:-1]; once = TRUE; soundId = [[SimpleAudioEngine sharedEngine] playEffect:@".mp3"]; } return self; } -(void) transitionfront:(id) sender { [[SimpleAudioEngine sharedEngine] stopEffect:soundId]; soundId1 = [[SimpleAudioEngine sharedEngine] playEffect:@"page_turn.mp3"]; flip = [[Sprite spriteWithFile:@"a.jpg"] retain]; [self addChild: flip z:1]; [flip setPosition:ccp(160,240)]; Animation* animation1 = [Animation animationWithName:@"Page1" delay:0.09]; for( int i=1;i<4;i++) [animation1 addFrameWithFilename: [NSString stringWithFormat:@".jpg", i]]; id action = [Animate actionWithAnimation: animation1]; //id action = [RepeatForever actionWithAction:[Animate actionWithAnimation: animation1]]; [flip runAction:action]; [NSTimer scheduledTimerWithTimeInterval:0.3 target:self selector:@selector(moveforward) userInfo:nil repeats:NO]; } -(void) moveforward { [[SimpleAudioEngine sharedEngine] stopEffect:soundId1]; [[Director sharedDirector] replaceScene: [ [Scene node] addChild: [nextpage node] z:0] ]; } -(void) transitionback:(id) sender { [[SimpleAudioEngine sharedEngine] stopEffect:soundId]; soundId1 = [[SimpleAudioEngine sharedEngine] playEffect:@".mp3"]; flip = [[Sprite spriteWithFile:@".jpg"] retain]; [self addChild: flip z:1]; [flip setPosition:ccp(160,240)]; Animation* animation1 = [Animation animationWithName:@"Page1" delay:0.09]; for( int i=3;i>0;i--) [animation1 addFrameWithFilename: [NSString stringWithFormat:@".jpg", i]]; id action = [Animate actionWithAnimation: animation1]; //id action = [RepeatForever actionWithAction:[Animate actionWithAnimation: animation1]]; [flip runAction:action]; [NSTimer scheduledTimerWithTimeInterval:0.3 target:self selector:@selector(movebackward) userInfo:nil repeats:NO]; } -(void) movebackward{ //[[SimpleAudioEngine sharedEngine]stopEffect:@".mp3"]; [[Director sharedDirector]replaceScene:[[Scene node]addChild:[b4page node] z:0]]; } -(void) glossary :(id) sender { [[SimpleAudioEngine sharedEngine]stopEffect:soundId]; [[Director sharedDirector]replaceScene:[[Scene node]addChild:[ node] z:0]]; } -(BOOL)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; CGPoint cocosTouchPoint = [touch locationInView: [touch view]]; CGPoint point = [[Director sharedDirector] convertToGL:cocosTouchPoint]; NSLog(@"pointx: %f pointy:%f", point.x, point.y); // Was a tab touched, if so, which one... if (CGRectContainsPoint(CGRectMake(220, 0, 100, 70), point)) { if(once) { NSLog(@"enterred page1"); [self transitionfront:nil]; once = FALSE; } } if (CGRectContainsPoint(CGRectMake(0,0,60,60), point)) { if(once) { NSLog(@"enterred cover"); [self transitionback:nil]; once = FALSE; } } if (CGRectContainsPoint(CGRectMake(100, 15, 30, 30), point)) { if(once){ [self glossary :nil]; once = FALSE; } } return kEventHandled; } -(void)playEffect:(NSString*)sound{ if(effectPlayer!=nil){ [effectPlayer release]; } NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:sound ofType:@"mp3"]]; effectPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil]; [effectPlayer setDelegate:self]; [effectPlayer play]; } -(void)stopEffect { [effectPlayer stop]; } -(void) dealloc{ [super dealloc]; } do pls help me........ do give me a exact coding this is the err..... *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value (key: aesop.mp3)' 2010-05-27 10:43:09.834 abc[276:20b] Stack: ( 11674715, 2476006971, 11758651, 11758490, 5126917, 660698, 660881, 661061, 131577, 448857, 120432, 153433, 630890, 23694899, 23603228, 23630005, 47120081, 11459456, 11455560, 47114125, 47114322, 23633923, 9928, 9814 )

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• multiple C++ deletion of a memory pointed by multiple objects

  - by elgcom

  Another c++ pointer deletion question is in the following example: class Foo { public: int *p; ~Foo() { delete p; p = NULL; } }; Foo *f1 = new Foo(); Foo *f2 = new Foo(); f1->p = new int(1); f2->p = f1->p; delete f2; // ok delete f1; // no error? Why I did not get error when calling "delete f1"? didn't I delete the same address (*p) twice? If I directly delete the pointers in the last 2 lines of code, I will get error. delete f2->p; // ok delete f1->p; // error!! *** glibc detected *** double free or corruption (fasttop) ***

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• quaring larg text file containing JSON objects.

  - by Maciek Sawicki

  Hi, I have few Gigabytes text file in format: {"user_ip":"x.x.x.x", "action_type":"xxx", "action_data":{"some_key":"some_value"...},...} each entry is one line. First I would like to easily find entries for given ip. This part is easy because I can use grep for example. However even for this I would like to find better solution because I would like to get response as fast as possible. Next part is more complicated because I would like to find entries from selected ip and of selected type and with particular value of some_key in action_data. Probably I would have to convert this file to SQL db (probably SQLite, because it will be desktop APP), but I would ask if there are exists better solutions?

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• Document management, SCM ?

  - by tsunade

  Hello, This might not be a hard core programming question, but it's related to some of the tools used by programmers I suspect. So we're a bunch of people each with a bunch of documents and a bunch of different computers on a bunch of operating systems (well, only 2, linux and windows). The best way these documents can be stored/managed is if they were available offline (the laptop might not always be online) but also synchronized between all the machines. Having a server with extra reliable storage be a "base repository" seems like a good idea to me. Using a SCM comes to my mind and I've tried Subversion, and it seems to be a good thing that it uses a centralized repository - but: When checking out the total size of the checkout is roughly double the original size. Big files or big repositories seem to slow it down. Also I've tried rsync, which might work - but it's a bit rough when it comes to the potential conflict. Finally I've tried Unison (which is a wrapping of rsync, I think) and while it works it becomes horribly slow for the big directories we have here since it has to scan everything. So the question is - is there a SCM tool out there that is actually practial to use for a big bunch of both small and big files? If thats a NO - does anyone know other tools that do this job? Thanks for reading :)

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• Dynamic Operator Overloading on dict classes in Python

  - by Ishpeck

  I have a class that dynamically overloads basic arithmetic operators like so... import operator class IshyNum: def __init__(self, n): self.num=n self.buildArith() def arithmetic(self, other, o): return o(self.num, other) def buildArith(self): map(lambda o: setattr(self, "__%s__"%o,lambda f: self.arithmetic(f, getattr(operator, o))), ["add", "sub", "mul", "div"]) if __name__=="__main__": number=IshyNum(5) print number+5 print number/2 print number*3 print number-3 But if I change the class to inherit from the dictionary (class IshyNum(dict):) it doesn't work. I need to explicitly def __add__(self, other) or whatever in order for this to work. Why?

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• Android: stack management for views in a tab?

  - by wei

  I see some answers here prefer views over activities as contents of tabs. Correct me if I am wrong. My understanding is that by switching out views, it's possible to keep the navigation flow inside a tab (more user friendly, I think). But I wonder how to manage the view stack then in case of the back button events. Also this could cause one giant Activity with large amount of views, which might not be good. So I wish to know why exactly views as contents is preferred before I change my current application to this. Thanks,

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• Custom Web Control - ParseChildren & Resource Objects

  - by Raybiez

  I hope someone can help me. I have the following custom server control: [ParseChildren(true)] public class MyControl : WebControl, INamingContainer { [PersistenceMode(PersistenceMode.InnerProperty)] public string MyProperty { get;set; } } It works perfectly with the following mark-up: <acme:MyControl runat="sever"> <MyProperty>Test String</MyProperty> </acme:MyControl> But if I try to localise the property string, I get a parse error: <acme:MyControl runat="sever"> <MyProperty><%=(string)GetLocalResourceObject("MyResourceKey") %></MyProperty> </acme:MyControl> Even if I cast the type, ASP.NET indicates that the property cannot accept controls as children. How should the expression look like if I want to localise it? I can make the property accessible as an attribute of the control's tag, but I prefer the mark-up above, it looks more elegant and clean. Thanks

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