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• How to implement "drag n drop" user interface on website?

  - by Nikkeloodeni

  Hello, I was wondering what would be the best way to implement some kind of "drag n drop" user interface? What i mean is that there would be one main page and every link click (eg. other sections like about, gallery, contact form) would open a new drag n drop element on top of that main page. Something like windows desktop where you can move your application windows around the screen. Would it be best to call different functions with AJAX when a link is clicked? Like "gallery" link would call gallery-function and retrieve dynamically generated contents of that "window" with AJAX call and then just load that stuff on some div? Or would some other type of approach suit better for this? I hope I was able to explain this clearly enough. I'm looking for a proper "design pattern" to implement this. All suggestions are wellcome! :)

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• How to provide animation when calling another activity in Android?

  - by sunil

  Hi, I have two Activities A and B. I want to have the shrink Animation when Activity A calls B and maximize animation when Activity B calls A. I don't need the animation xml files for this. When we call another Activity in Android it gives its default animation and then it calls shrink animation. What I want is that the default animation should not occur and the animation that I want should occur. Can we actually give the animation when calling another Activity? Hope to get a quick response. Regards Sunil

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• Is MD5 really that bad?

  - by Col. Shrapnel

  Everyone says that MD5 is "broken". Though I have never seen a code that can show it's weakness. So, I hope someone of local experts can prove it with simple test. I have an MD5 hash c1e877411f5cb44d10ece283a37e1668 And a simple code to produce it $salt="#bh35^&Res%"; $pass="***"; echo $hash=md5($salt.$pass); So, the question is: 1. Is MD% really that bad? 2. If so, what's the pass behind the asterisks?

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• Why do Lua arrays(tables) start at 1 instead of 0?

  - by AraK

  Hi, I don't understand the rational behind the decision of this part of Lua. Why does indexing start at 1? I have read(as many others did) this great paper. It seems to me a strange corner of a language that is very pleasant to learn and program. Don't get me wrong, Lua is just great but there has to be an explanation somewhere. Most of what I found(on the web) is just saying the index starts at 1. Full stop. It would be very interesting to read what its designers said about the subject. Note that I am "very" beginner in Lua, I hope I am not missing something obvious about tables.

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• Touch and Drag from one view to another

  - by jollyCocoa

  Hi all! I've search for some clues on this problem without much success. Hope someone can kick me in the right direction. I am prototyping a couple of apps where I need to design my own GUI. The GUI is made up by two separated UIViews where one of them contains a small thumb of an image. I want to be able to drag this thumb from the first view to the other. Simple as that! But I haven't figured out how this is done. Here is the exact flow I am looking for: touch the thumb animate a small enlargement of the thumb drag the thumb to the other UIView drop the thumb animate a shrink of the thumb Not particularly strange, but the thumb remains related to the first view all the time. I've tried to move the thumb via the first views superview and then back to the second view, but with no luck.

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• How to repaint another Qt class

  - by RR

  Hi all, I'm a new bit in Qt... I have a Qt GUI application (written by me), let's call it QtAPP.exe When QtAPP.exe running, I will use a QThread and QProcess to execute some external file, such as player.exe (written in native C). Here's my question: In QtAPP.exe, there are 2 classes, 1. QMainWindow - Core of QtAPP.exe 2. QThread - A thread class to execute external things For now, if I got a finished() signal in that QThread, how do I to force the QMainWindow to repaint itself ? Hope somebody can show me some tips, maybe sample code :) Any suggestion are welcome~

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• MySQL: 4 Table "has-many-through" Join?

  - by Nebs

  Let's say I have the following 4 tables (for examples' sake): Owners, Trucks, Boxes, Apples. An owner can have many trucks, a truck can have many boxes and a box can have many apples. Owners have an id. Trucks have an id and owner_id. Boxes have an id and truck_id. Apples have an id and box_id. Let's say I want to get all the apples "owned" by an owner with id = 34. So I want to get all the boxes that are in boxes that are in trucks that owner 34 owns. There is a "hierarchy" if you will of 4 tables that each only has reference to its direct "parent". How can I quickly filter boxes while satisfying conditions across the other 3 tables? I hope that made sense somewhat. Thanks.

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• calling a service from an activity

  - by newbie

  Hi,I have been stuck on this issue for quite some time now.Have read the documentation and many tutorials and they just confuse me more.I hope someone will provide me a straightforward answer.It's really important.Thank you.. Ok ..so i want an activity to get some input from the user as and then send that string to a service.Then i want my service to run in a way so that i can use other applications while this one keeps running in the background.Also i don't want the service to keep running every second.What i want is for the service to get updated location of my current position every 10 minutes so i was thinkin if there could be a way to make my service to go to sleep n wake up evry 10 mins n check for updates.I don't want to show the update on the UI so i dont think i need to use an AIDL approach and also dont need to bind to the service.I js simply want to start the service as soon as the user enters the string and keep the service runing every 10 mins.I think it is really simple but m very confused.Please help.

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• Problems after adding Control dynamically on Panel

  - by Thomas

  Hello, I have added an View List onto a Panel like that: panelComponent.Controls.Add(viewListComponent); Everthing works just fine. Mouse Events are handled, Repaint works. But one: I cant dynamically move it around. If i change the control.Top Variablen it just sit there and nothing. Its clued to the top left corner. Resizing the right and bottom line works just fine! I did it without dynamically adding and than no Problem. Hope you can help. Thomas

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• How to disable expand sign in Swing JTree?

  - by user2899630

  I'm working in Swing and I would like to disable the expand (plus [+]) sign on a certain type of nodes. Not sure how to do it because my nodes aren't leaves and I also cannot use setShowsRootHandles (which is only for the root). I'm referring to to JTree: suppose i got this structure: Root --[+] node1 --[+] node2 when I load this structure i would like not to see the [+] sign on node2 (because it a special type node). But I also would like to expand it by using a special command. I've overridden isLeaf() (method from DefaultMutableTreeNode) so it would set to to TRUE when i'm in the special type node, but then when I'm trying to expand it, it wouldn't expand because isLeaf() == TRUE... Hope this will make things more clear.

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• TabBar in NavigationController Based iphone app

  - by iPhoneDev

  I have a simple navigation based iPhone app, in which user can navigate form one view to another view. There is only one view which have 4 tab. Each tab loads a a seperate nib with a corresponding controller. Each nib contains a tableview with some other controls for searching/filtering etc. Apprt from this I dont need tabBar in any view. So for ex: Login View Welcome View (With TabBar) user select Setting tab and select any setting option Setting Detail view(WITHOUT tabbar) Back WelcomView( With Tab Bar) I am confused how to add a tab bar in navigation based template where only one view is using tabBar all other uses Navigation I hope you understand my problem. I am new to iphone so any example/link will help a lot. Thanks

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• find a duplicate entry in an array in constant space and O(n) time [closed]

  - by Anubhav Agarwal

  Possible Duplicate: Algorithm to find a duplicate entry in constant space and O(n) time Given an array of N integer such that only one integer is repeated. Find the repeated integer in O(n) time and constant space. There is no range for the value of integers or the value of N For example given an array of 6 integers as 23 45 67 87 23 47. The answer is 23 (I hope this covers ambiguous and vague part) I searched on the net but was unable to find any such question in which range of integers was not fixed. Also here is an example that answers a similar question to mine but here he created a hash table with the highest integer value in C++.But the cpp does not allow such to create an array with 2^64 element(on a 64-bit computer).

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• soap response to xml (simple_xml)

  - by ntan

  Hi i am trying to convert a soap response to XML. Soap has an envelop and a body <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <soap:Body> When try to convert $responseXML = simplexml_load_string($string); I get object(SimpleXMLElement)#20 (0) { } If i edit the $string as soap-Envelope and soap-Body i can get the XML Whats wrong with : and can not get XML I hope its clear. Anyone

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• Why wont my .NET 3.5 app run on fresh installation of windows7?

  - by acidzombie24

  In C:\Program Files\Reference Assemblies\Microsoft\Framework i see v3.0 and v3.5. I found that path in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\InstallRoot which also has that path. In C:\Windows\Microsoft.NET\Framework i see versions from 1 to 3.5 My app was built in msvs2010rc1 targeting 3.5. In fact in my project files i see v3.5. So whats with this? Why cant i run it? -edit- The application crashes on double click. With no exception dialog. Ok i see the problem. Sorry guys :$. I hope this post serves as a reference to someone else. I completely forgot that my app uses SDL.NET and i am use to C++ telling me i have forgotten a DLL.

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• Design pattern for mouse interaction

  - by mike

  I need some opinions on what is the "ideal" design pattern for a general mouse interaction. Here the simplified problem. I have a small 3d program (QT and openGL) and I use the mouse for interaction. Every interaction is normally not only a single function call, it is mostly performed by up to 3 function calls (initiate, perform, finalize). For example, camera rotation: here the initial function call will deliver the current first mouse position, whereas the performing function calls will update the camera etc. However, for only a couple of interactions, hardcoding these (inside MousePressEvent, MouseReleaseEvent MouseMoveEvent or MouseWheelEvent etc) is not a big deal, but if I think about a more advanced program (e.g 20 or more interactions) then a proper design is needed. Therefore, how would you design such a interactions inside QT. I hope I made my problem clear enough, otherwise don't bother complain :-) Thanks

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• Custom component creation - how to add small icon representing component in Tool Palette?

  - by Wodzu

  Please bear in mind that I've read all the instructions I could find about adding component icon to my custom component. And I am able to do this when we talk about the icon size which is 24x24 pixels. I see the icon when a component is dropped on the form. However I can not see the small 16x16 icon which should be displayed when browsing Tool Palette. I've read that I should name my two other BMP files which are contained in DCR file like this: MyComponentName16 [for 16x16 BMP file] MyComponentName32 [for 32x32 BMP file] Unfortunately this does not seem to work, I've tried to restart Delphi few times in hope that it might be the case of not refreshing something, but without any success. Any ideas?

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• Is there anything like memcached, but for sorted lists?

  - by depesz

  I have a situation where I could really benefit from having system like memcached, but with the ability to store (per each key) sorted list of elements, and modifying the list by addition of values. For example: something.add_to_sorted_list( 'topics_list_sorted_by_title', 1234, 'some_title') something.add_to_sorted_list( 'topics_list_sorted_by_title', 5436, 'zzz') something.add_to_sorted_list( 'topics_list_sorted_by_title', 5623, 'aaa') Which I then could use like this: something.get_list_size( 'topics_list_sorted_by_title' ) // returns 3 something.get_list_elements( 'topics_list_sorted_by_title', 1, 10 ) // returns: 5623, 1234, 5436 Required system would allow me to easily get items count in every array, and fetch any number of values from the array, with the assumption that the values are sorted using attached value. I hope that the description is clear. And the question is relatively simple: is there any such system?

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• SQL Query Question ROW_CONCAT

  - by DaveC

  Hello Guy, I have been stuck on this problem for quite awhile... I hope someone out there can give me a hand. The following table is in my database: Product_ID Color Type 1 Red Leather 1 Silver Metal 1 Blue Leather 2 Orange Metal 2 Purple Metal I am trying to get the following output: Product_ID Type Color 1 Leather Red, Blue 1 Metal Silver 2 Metal Orange, Purple I know it has to do with some kind of double group by and a group_concat.... have been looking at this for an hour without figuring it out. Any help is much appreciated!!!

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• How to get WordPress Twenty Ten theme sub-menus to expand to their contents (CSS)?

  - by anonymous coward

  Hope this isn't "too" niche, because the CSS involved likely applies in other spots. I'm working with the new Twenty Ten theme in WordPress 3 beta/nightlies, and I'd really like it if the drop-down sub-menus (Pages/custom menus) would expand to the width of whatever is in them, rather than wrap the items at 130px. Here's an example page set up that contains nothing but the relevant HTML and the Twenty Ten theme CSS file: http://almostexciting.com/wordpress-twentyten-menu.html I've tried changing the "width" for the link items to a "min-width", which doesn't work - nor does completely removing it. I can't seem to locate any other styles that are constricting the width of the menu items, so I'm a bit desperate for help. Been tearing this thing up in Firebug for too long now.

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• How to print absolute line number in uncaught exception?

  - by DSblizzard

  When error occured Python prints something like this: Traceback (most recent call last): File "<stdin>", line 2, in <module> File "<stdin>", line 8, in m File "<stdin>", line 5, in exec_st File "<stdin>", line 9, in exec_assign File "<stdin>", line 48, in ref_by_id IndexError: list index out of range where 2, ... , 48 are relative line numbers which are not very convenient. How to print absolute line numbers in such error messages? EDIT: Maybe it's a dumb question, but answer will facilitate development a little. I'm printing text in several files. When done, press shortcut which runs python and copies contents of current file to console. Proposed solution forces to press excess keystrokes (Ctrl+S, Alt+Tab) and create additional files. I hope I have put it clear.

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• Why my WCF Service returns xml serialized objects?

  - by user294554

  Hi, I'm new here and I hope anyonte can help me. I have WCF Service and Windows Forms working with this client written in VB.NET. The Service class started to return xml serialized objects, but all my classes on Service side are DataContract-s and the service class is DataContractFormat. I googled everywhere about serializations and I couldn't find reason why it started to do that. I checked my classes and service, app.config file, but I couldn't find anything. I checked Reference.vb class, and it's System.Xml.Serialization.XmlElementAttribute everywhere. The question may seem dummy, but I really don't know what to do. I just want to know what can cause the service to act like that. Thank you.

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• Calculating very large exponents in python

  - by miraclesoul

  Dear All, Currently i am simulating my cryptographic scheme to test it. I have developed the code but i am stuck at one point. I am trying to take : g**x where g = 256 bit number x = 256 bit number Python hangs at this point, i have read alot of forums, threads etcc but only come to the conclusion that python hangs, as its hard for it to process such large numbers. any idea how can it be done? any two line piece of code, any library, anything that can be done.(ALSO PLEASE I AM A NEW PYTHON USER AND THIS IS FIRST TIME I DID PROGRAMMING IN IT, SO NO COMPLEX METHODS ...HOPE YOU UNDERSTAND :s)

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• How to debug Perl program sudden exits?

  - by taw

  I have Perl program based on io::async, and it sometimes just exits after a few hours/days without printing any error message whatsoever. There's nothing in dmesg or /var/log either. STDOUT/STDERR are both autoflush(1) so data shouldn't be lost in buffers. It doesn't actually exit from IO::Async::Loop->loop_forever - print I put there just to make sure of that never gets triggered. Now one way would be to keep peppering the program with more and more prints and hope one of them gives me some clue. Is there better way to get information what was going on in a program that made it exit/silently crash?

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• CakePHP hasOne ineffeciency?

  - by Andre

  I was looking at examples on the CakePHP website, in particular hasOne used in linking models. http://book.cakephp.org/view/78/Associations-Linking-Models-Together My question is this, is CakePHP using two queries to build the array structure of data returned in a model that uses hasOne linkage? Taken from CakePHP: //Sample results from a $this-User-find() call. Array ( [User] => Array ( [id] => 121 [name] => Gwoo the Kungwoo [created] => 2007-05-01 10:31:01 ) [Profile] => Array ( [id] => 12 [user_id] => 121 [skill] => Baking Cakes [created] => 2007-05-01 10:31:01 ) ) Hope this all makes sense.

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• PHP/Apache Deny folder access to user but not to script

  - by Piero

  Hey all, So I have this php web app, and one of my folder contains some files that can be downloaded. I have a download script that modifies the headers, in order to always offer a download link. (instead of showing a picture for example, when you click on a link, a download box pops out) Right now, if you enter a url like: http://www.mywebsite.com/content/ You get the listing of all the downloadable files, and of course, you can just download them all, without going through the website interface. Personally, I don't think it's a problem, since I often use downthemall or other downloading tool, and this type of access is a great time saver.... But of course my company does not think so :-p They want people to use the interface in order to view the Ads... Would they be a way, maybe with a protected .htaccess, to leave the folder access to my download script, but deny access to the users...? I hope I am making sense and you know what I mean :) All help/remarks appreciated!

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