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• Compact Framework - ListView like control ?

  - by no9

  Hello. I have been playing with Compact Framework lately and i need some advice. I have a collection of items. One of the properties on each item is a string type that holds XML. This XML defines image, font, style etc... Im looking for a control (similar to listView) that would replace listBox control. Im not satisfied with listView control, because it is very limited on items level. The control has to be dynamic enough so that my parser could parse the XML and customise the control. For a start i would like to show an image and perhaps some font styles for each row in the control. Here is a sample what im trying to achieve: Any suggestions?

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• Parsing XML stream in ASP.NET 3.5

  - by Ranjit

  Hi All, I am trying to build an ASP.NET 3.5 application based on XML streams from a legacy systems. My issue is once I get the XML I have to built menus and sub menus from the XML as well filter data(XML stream) based on the menu selection without making roundtrip to the Data store(legacy system). Right now I have a DAL which will get the XML stream in the form of XDocument.I was able to built the first level Menu Items, but not the sub Menu Items based on the selection in the Main Menu and then the final content based on the sub menu selection, all this without making a round trip. Is there a way to do this in-memory. Please suggest. thank you. Ranjit

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• Manipulating the address of a variable to store a smaller type?

  - by Sidnicious

  This is what I get for pampering myself with high-level programming languages. I have a function which writes a 32-bit value to a buffer, and a uint64_t on the stack. Is the following code a sane way to store it? uint64_t size = 0; // ... getBytes((uint32_t*)&size+0x1); I'm assuming that this would be the canonical, safe style: uint64_t size = 0; // ... uint32_t smallSize; getBytes(&smallSize); size = smallSize;

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• Analysis and Design for Functional Programming

  - by edalorzo

  How do you deal with analysis and design phases when you plan to develop a system using a functional programming language like Haskell? My background is in imperative/object-oriented programming languages, and therefore, I am used to use case analysis and the use of UML to document the design of program. But the thing is that UML is inherently related to the object-oriented way of doing software. And I am intrigued about what would be the best way to develop documentation and define software designs for a system that is going to be developed using functional programming. Would you still use use case analysis or perhaps structured analysis and design instead? How do software architects define the high-level design of the system so that developers follow it? What do you show to you clients or to new developers when you are supposed to present a design of the solution? How do you document a picture of the whole thing without having first to write it all? Is there anything comparable to UML in the functional world?

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• jQuery sortable drop within itself.

  - by Janis Peisenieks

  So my question here is: Can I place a sortable element within another sortable element of the same level. Example: <ul class="sortable"> <li class="subsortable">Some text</li> <li class="subsortable">Some text</li> </ul> into: <ul class="sortable"> <li class="subsortable">Some text<li class="subsortable">Some text</li></li> </ul> I've been trying to do this for a day now, and I can't seem to find a way to do this.

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• In what language was MSDOS originally written?

  - by nebukadnezzar

  In what language was MSDOS originally written in? The Wikipedia Article implies either C, QBasic or Pascal, but: C was invented to write UNIX, so I don't believe it was used to write MSDOS Pascal seems popular to teach programming, but not really popular to write Operating systems in QBasic didn't seem to be very popular for Operating Systems at the time MSDOS was developed (or was *BASIC ever very popular to write Operating Systems in it?) Except these three languages there is also Assembly, but I assume that Microsoft already switched from Assembly to a "higher" level language? Since C was originally invented for UNIX, I still wouldn't think Microsoft is using C... although the Microsoft API is written in C (I find this kind-of oxymoronic, actually). Can anyone enlighten me on this topic?

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• Form to sort an index in rails

  - by shmichael

  I'm a newcomer to Rails. I want to build a simple form that determines the sort order of a list. I've implemented a form in the likes of - <%= radio_button_tag :sort, "rating" %> <%= label_tag :sort_rating, "order by rating" %> <%= radio_button_tag :sort, "name" %> <%= label_tag :sort_name, "order by name" %> And now I am unsure how to implement the sort at the controller/model level. The aspects I am puzzled about are: Where should the sort be performed How could the sort parameter be persisted How could the code be reused Right now, I can't even get the selected sort method to remain selected after a submit. I would most appreciate any guidance or reference to an example.

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• AutoHotkey ControlSend problem on one machine

  - by Illotus

  I have this AutoHotkey script that has a weird problem. It is used in 3 workstations, but in one the ControlSend doesn't seem to work as the hotkey doesn't work in program A. All three machines have Windows XP and are Pentium 4 level machines with mostly same software, the script is in exe form. I've tried a lot of different ways to send the hotkey to Program A, but nothing seems to work. The idea of the script is simply to catch a hotkey and click in another window in addition to its normal function. The normal function just doesn't work. Any ideas what could be the root of the problem and where I should look for it? #IfWinActive, Program A ^H:: IfWinActive, Program A { ControlFocus, MDIClient1, Program A, , , ControlSend, , ^H, Program A, , , ControlClick, X46 Y135, Program B, , LEFT , 1 return }

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• Cross-platform GUI toolkits with WPF-style composition capabilities

  - by Alexey Romanov

  A huge advantage of WPF over, say, WinForms is its composability. To quote Programming WPF: One level up, WPF provides its “content model,” which allows any control to host any group of other controls. You don’t have to build special BitmapButton or IconComboBox classes; you put as many images, shapes, videos, 3D models, or whatever into a Button (or a ComboBox, ListBox, etc.) as suit your fancy. Are there any cross-platform GUI frameworks (preferably with Java bindings) out there which also let you do this?

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• t-sql recursive query

  - by stackoverflowuser

  Based on an existing table I used CTE recursive query to come up with following data. But failing to apply it a level further. Data is as below id name parentid -------------------------- 1 project 0 2 structure 1 3 path_1 2 4 path_2 2 5 path_3 2 6 path_4 3 7 path_5 4 8 path_6 5 I want to recursively form full paths from the above data. Means the recursion will give the following output. FullPaths ------------- Project Project\Structure Project\Structure\Path_1 Project\Structure\Path_2 Project\Structure\Path_3 Project\Structure\Path_1\path_4 Project\Structure\Path_2\path_5 Project\Structure\Path_3\path_6 Thanks

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• Concurency issues with scheduling app

  - by Sazug

  Our application needs a simple scheduling mechanism - we can schedule only one visit per room for the same time interval (but one visit can be using one or more rooms). Using SQL Server 2005, sample procedure could look like this: CREATE PROCEDURE CreateVisit @start datetime, @end datetime, @roomID int AS BEGIN DECLARE @isFreeRoom INT BEGIN TRANSACTION SELECT @isFreeRoom = COUNT(*) FROM visits V INNER JOIN visits_rooms VR on VR.VisitID = V.ID WHERE @start = start AND @end = [end] AND VR.RoomID = @roomID IF (@isFreeRoom = 0) BEGIN INSERT INTO visits (start, [end]) VALUES (@start, @end) INSERT INTO visits_rooms (visitID, roomID) VALUES (SCOPE_IDENTITY(), @roomID) END COMMIT TRANSACTION END In order to not have the same room scheduled for two visits at the same time, how should we handle this problem in procedure? Should we use SERIALIZABLE transaction isolation level or maybe use table hints (locks)? Which one is better?

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• Python namespace in between builtins and global?

  - by Paul

  Hello, As I understand it python has the following outermost namespaces: Builtin - This namespace is global across the entire interpreter and all scripts running within an interpreter instance. Globals - This namespace is global across a module, ie across a single file. I am looking for a namespace in between these two, where I can share a few variables declared within the main script to modules called by it. For example, script.py: import Log from Log import foo from foo log = Log() foo() foo.py: def foo(): log.Log('test') # I want this to refer to the callers log object I want to be able to call script.py multiple times and in each case, expose the module level log object to the foo method. Any ideas if this is possible? It won't be too painful to pass down the log object, but I am working with a large chunk of code that has been ported from Javascript. I also understand that this places constraints on the caller of foo to expose its log object. Thanks, Paul

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• Headless HTML rendering to image on CentOS 5.4

  - by Jim Tough

  Hello, I have a project requirement to render HTML and capture the rendered image as a file on a headless CentOS 5.4 server. My specific requirements are: 1) Input will be a URL to the page to render, output will be an image file containing the rendered image of the page 2) CSS must be supported by the renderer up to CSS level-1 3) Static images in the page must be displayed properly in the rendered image, including any transparent color in .GIF files 4) Must be able to run on a headless CentOS 5.4 server. 5) Solution must not depend on any product or component that is not free for commercial use I do not need to do anything with the page other than get the screen capture and save it to an image. The hard part seems to be doing this in a headless environment. Some of the solutions that I've seen discussed need a display in order to work. Any suggestions? Thanks in advance, Jim

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• Ruby efficient way of building an array from an array of arrays

  - by randombits

  I have an array of ActiveRecord objects, each one which has its own respective errors array. I want to flatten it all out and get only the unique values into one array. So the top level array might look like: foo0 = Foo.new foo1 = Foo.new foo2 = Foo.new foo3 = Foo.new arr = [foo0, foo1, foo2, foo3] Each one of those objects could potentially have an array of errors, and I'd like to get just the unique message out of them and put them in another array, say called error_arr. How would you do it the "Ruby" way?

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• Is there any benefit to declaring a private property with a getter and setter?

  - by AmoebaMan17

  I am reviewing another developer's code and he has written a lot of code for class level variables that is similar to the following: /// <summary> /// how often to check for messages /// </summary> private int CheckForMessagesMilliSeconds { get; set; } /// <summary> /// application path /// </summary> private string AppPath { get; set; } Doesn't coding this way add unnecessary overhead since the variable is private? Am I not considering a situation where this pattern of coding is required for private variables?

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• Types in Bytecode

  - by HH

  Hey everyone, I've been working for some time on (Java) Bytecode, however, it had never occurred to me to ask why are some instructions typed? I understand that in an ADD operation, we need to distinguish between an integer addition and a FP addition (that's why we have IADD and FADD). However, why do we need to distinguish between ISTORE and FSTORE? They both involve the exact same operation, which is moving 32 bits from the stack to a local variable position? The only answer I can think of is for type-safety, to prevent this: (ILOAD, ILOAD, FADD). However, I believe that type-safety is already enforced at the Java language level. OK, the Class file format is not directly coupled with Java, so is this a way to enforce type-safety for languages that do not support it? Any thought? Thank you.

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• mediawiki markup equivalent of WMD live-previewing editor? (not WYSIWYG)

  - by Justin Grant

  Anyone have a recommendation for an editor like the WMD editor, but using MediaWiki markup instead of Markdown? Our site is already using MediaWiki markup but we want a slicker editor without changing markup completely. Requirements include: live preview of formatted text underneath the markup you're typing a toolbar for common formatting (bold, italic, links, bullets, numbered-list, code, etc) keyboard shortcuts for each toolbar button (e.g. CTRL+B for bold) Undo/redo via keyboard shortcuts (CTRL+Z/CTRL+Y) or toolbar buttons works well in the usual set of popular browsers (including IE6!) open-source would be preferred I've found a few options at http://www.mediawiki.org/wiki/WYSIWYG_editor, but all of these seem to be WYSIWYG editors which is not exactly what I want since full-on WYSIWYG editors tend to be bug-prone and complicate working at the markup level. Instead we want a plain-text markup editor with a client-side previewer, plus some UI niceties (toolbar, undo, keyboard shortcuts) to make editing markup easier.

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• ExpressionEngine 2 module "tag cannot be processed"

  - by Phil Sturgeon

  So I have turned my hand to ExpressionEngine and while the backend crud was easy enough getting the frontend working with template syntax is proving difficult, even at the "hello world" level. expressionengine/third_party/rest/mod.rest.php class Rest { var $return_data = ''; function Rest() { $this->EE =& get_instance(); return $this->return_data = 'HAI'; } } // END REST Class /* End of file REST.php */ /* Location: ./application/libraries/REST.php */ Then im calling it directly in a new empty template: {exp:rest} So I'm expecting to see "HAI" but I get: Error The following tag cannot be processed: {exp:rest} Please check that the ‘rest’ module is installed and that ‘rest’ is an available method of the module Any ideas? The module is installed and the backend is running fine.

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• How do I use master page container in partial view

  - by user200295

  I have several partial views with Javascript that I am trying to move to the bottom of the page. To do this I am trying to use a container in the master page Master Page - <asp:ContentPlaceHolder ID="Foot" runat="server"></asp:ContentPlaceHolder> Partial view(ascx) <asp:Content ID="header" ContentPlaceHolderID="head" runat="server"> ... </asp:Content> But I get this error Parser Error Message: Content controls have to be top-level controls in a content page or a nested master page that references a master page. So how do I ensure that the Javascript for the partial view is at the bottom of the page? Especially in cases where the html layout needs to be at the top of the page?

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• strategy for observer pattern?

  - by fayer

  I want to use observer pattern for a logging system. We have got logObservers and logObservables. The class that will have to log something will implement iLogObservable and include these methods: private $logObservers = array(); public function addLogObserver($logObserver) { $this->logObservers[] = $logObserver; } public function removeLogObserver($logObserver) { $this->logObservers[] = $logObserver; } public function write($type, $message) { foreach($this->logObservers as $logObserver) { $logObserver->log($level, $message); ; } } Then I noticed, that a lot of classes that will use logging will have these methods and I have to copy paste. So isn't it better to have these methods in a class I call LogObservable or just Log and then use strategy (instantiate this class inside all classes that will have to log). When I change the methods in Log, all logObservables will be affected. However, I have not seen anyone use observer pattern with strategy pattern yet, but it seems to be very efficient and remove the duplications. What do you think?

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• Disable Task Manager using c# from Limited User Account

  - by srk

  I need to disable and enable the taskmanager from my application. I am doing this for my Kiosk application. I know i can do this by changing the Key in registry using below code. But the problem is my kiosk application will run in limited user account which does not allow the application to change key in registry level. Code working perfectly in Administrator account : RegistryKey regkey; string keyValueInt = "1"; string subKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System"; regkey = Registry.CurrentUser.CreateSubKey(subKey); regkey.SetValue("DisableTaskMgr", keyValueInt); regkey.Close(); How can i achieve this in Limited user account ?

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• PHP won't parse MySQL statements

  - by Hussain

  I just installed Apache 2.2.15/PHP 5.3.2/MySQL 5.1.44 on Windows Vista. Apache is working fine, PHP is functional, and MySQL works on the CLI. However, when I try to access MySQL via PHP, I get an error (Fatal error: Call to undefined function mysql_connect()). extension=php_mysql.dll and extension=php_mbstring.dll are uncommented in the php.ini file, and PHP is in the system path. There is no libmysql.dll in either the top level PHP directory or the ext directory. There's a libmySQL.dll file in the MySQL bin directory (which is also in the system path); I tried renaming it, but that doesn't do anything Also, in case anyone wants to know, I originally installed PHP using the MSI installer, but it was missing some DLLs, so I installed from the zip file. I think I've exhausted all my options. Any help on this problem would be very appreciated. Thanks in advance.

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• Starting new transaction within existing one in Spring bean

  - by Marcus

  We have: @Transactional(propagation = Propagation.REQUIRED) public class MyClass implementes MyInterface { ... MyInterface has a single method: go(). When go() executes we start a new transaction which commits/rollbacks when the method is complete - this is fine. Now let's say in go() we call a private method in MyClass that has @Transactional(propagation = Propagation.REQUIRES_NEW. It seems that Spring "ignores" the REQUIRES_NEW annotation and does not start a new transaction. I believe this is because Spring AOP operates on the interface level (MyInterface) and does not intercept any calls to MyClass methods. Is this correct? Is there any way to start a new transaction within the go() transaction? Is the only way to call another Spring managed bean that has transactions configured as REQUIRES_NEW?

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• Expression Studio 4 Premium & SketchFlow question; WTH

  - by Refracted Paladin

  Through work I have an Visual Studio Premium with MSDN subscription that I love. However, my biggest disappointment of the last 12 months was discovering that our 2nd from the top level subscription was not enough to get me Sketchflow! This is, most decidedly, NOT SHINY, and I am borderline distraught! What are my options? Upgrading to an Ultimate subscription for Sketchflow is out of the question. Am I forced, then, to stay with Blend 3 or Purchase Blend 4 seperately? If this is not a question I should ask here please inform and I'll delete. I just tend to default to SO for all questions that Google can't answer and Google did not answer this one.

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• Memory Warning but Small Live Bytes

  - by Kamchatka

  Hi everyone, In my application, I get a memory warning of level 1 and then 2 after repeating some action (choosing a picture + processing) several times and then a crash. The leak tool doesn't show any leak. I'm also following the Allocations tool in Instruments and my Live Bytes are roughly 4 MB, overall I allocate 113 MB. At maximum I have maybe 20 MB in memory when the picture is loaded. Since I have to repeat an action to get to the crash, it is very likely to be a memory leak. However, I don't know how to locate it since my live bytes are 4 MB and things supposed to be allocated (apart a small leak of ~100 KB in the UIImagePickerController). How much can I trust the memory leak/allocation tools? Would you have an advice to help me locate the reason of the problem?

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