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  • Silverlight: DataContractSerializer cannot handle read only collection properties

    - by moonground.de
    Hey Stackoverflowers :) For our Silverlight Project (SL4) I'm using a Model which might contain Lists (IList<AnotherModel>). According to good practice and rule CA2227:CollectionPropertiesShouldBeReadOnly the IList properties don't have a public setter. We serialize the Model using the DataContractSerializer which is working. But when I try to deserialize, a SecurityException is thrown by DataContractSerializer's ReadObject(Stream) Method, complaining that the target property (pointing to the IList property) cannot be set due to a missing public setter. Since the DataContractSerializer is sealed and neither extendable nor flexible so I currently see no chance to add some kind of additional rules which allow to deserialize the ILists using a foreach-loop on Add() method or some other method of transferring the collection items. I've also tried to dig into DataContractSerializer source (using Reflector) to create a little fork but it looks like i'd have to dig very deep and replicating whole serialization classes doesn't seem to be a viable solution. Do you see another chance to serialize a List with no public setter using the DataContractSerializer? Thank you very much in advance for your ideas! Thomas

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  • Determing software estimates and tracking past estimates

    - by Casey
    I know that this probably has as many answers as users here on SO, but software estimation always seemed like an esoteric science. Software developers don't have a magic book to refer to as exist in many other industries. I've been spending the last couple of days working on putting together some estimates for a bit of work that I am proposing for a freelance project that I am working on and am having trouble getting it down. I'm not experienced with any real software estimation practices and am trying to go from the gut based on my experience but also trying to be a little loose (not too loose though) on the estimates to leave me a bit of room to work. I read this blog entry http://blogs.popart.com/2007/07/what-scotty-from-star-trek-can-teach-us-about-managing-expectations/ that was linked to from SO and would like to start tracking my estimates at work as well even though I'm not really required to create estimates there. What tools or techniques would you recommend? Also, how much padding do you usually add in to a time estimate?

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  • How to handle Append Only text fields in a Sharepoint DataSheet view?

    - by Telos
    We've created a Sharepoint site to track a process. Eventually we're going to make a workflow out of it, but in the meantime there's a list we all have to look at which lists the various dates each piece is supposed to be finished. So basically My group needs to see and update columns X, Y, Z and Comments while ignoring the other 30 billion or so columns. Which is great in datasheet view because we can easily view our columns, and update them right there without drilling into the item and browsing through all the other crap we don't need. The problem is the Comments field, in which we really need to see the last actual comment made. Unfortunately whenever anyone saves the record the field is updated with a blank value (unless they entered a comment) and the last actual comment is lost unless you drill into the item. Is there some way to get the Datasheet view to show all the entries? I should also note that I know very little about Sharepoint 2007... so detailed answers would be nice!

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  • Is Objective C fast enough for DSP/audio programming

    - by morgancodes
    I've been making some progress with audio programming for iPhone. Now I'm doing some performance tuning, trying to see if I can squeeze more out of this little machine. Running Shark, I see that a significant part of my cpu power (16%) is getting eaten up by objc_msgSend. I understand I can speed this up somewhat by storing pointers to functions (IMP) rather than calling them using [object message] notation. But if I'm going to go through all this trouble, I wonder if I might just be better off using C++. Any thoughts on this?

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  • C++ _beginthreadex in cygwin

    - by Hugh
    Hello all, I am aware that _beginthreadex is part of the MSCVRT functions and therefore not accessible via Cygwin/MinGW uintptr_t _beginthreadex( void *security, unsigned stack_size, unsigned ( __stdcall *start_address )( void * ), void *arglist, unsigned initflag, unsigned *thrdaddr ); However, _beginthreadex does call upon CreateThread(). HANDLE CreateThread( LPSECURITY_ATTRIBUTES secAttr, SIZE_T stackSize, LPTHREAD_START_ROUTINE threadFunc, LPVOID param, DWORD flags, LPDWORD threadID ); However, does anyone have a wrapper or a URL to a library that is compatible with Cygwin/WinGW. Or can offer some advice? As this is the last little piece of moving from VSutdio Project over to makefiles for Windows/Darwin/Linux. Thanks.

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  • Cygwin socket & thread & other programming issues (some question about Cygwin)

    - by SjB
    I have some question about cygwin : Can I use Cygwin develop socket based code? Does Cygwin have read() and write() functions that work with file descriptors? Can I use Pthread library in Cygwin? Does code that compiles in Cygwin also compile in Linux without any change or with little change? Will an executable file that built by Cygwin run in Linux ? Why does Cygwin not need the linker option -lpthread when I use pthread library? why in #include <iostream> don't I need to use using namespace std; ? Can I work with QT in Cygwin? If so, How?

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  • MVC2 Binding isn't working for Html.DropDownListFor<>

    - by devlife
    I'm trying to use the Html.DropDownListFor< HtmlHelper and am having a little trouble binding on post. The HTML renders properly but I never get a "selected" value when submitting. <%= Html.DropDownListFor( m => m.TimeZones, Model.TimeZones, new { @class = "SecureDropDown", name = "SelectedTimeZone" } ) %> [Bind(Exclude = "TimeZones")] public class SettingsViewModel : ProfileBaseModel { public IEnumerable TimeZones { get; set; } public string TimeZone { get; set; } public SettingsViewModel() { TimeZones = GetTimeZones(); TimeZone = string.Empty; } private static IEnumerable GetTimeZones() { var timeZones = TimeZoneInfo.GetSystemTimeZones().ToList(); return timeZones.Select( t = new SelectListItem { Text = t.DisplayName, Value = t.Id } ); } } I've tried a few different things and am sure I am doing something stupid... just not sure what it is :)

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  • Tutorial: Simple WCF XML-RPC client

    - by mr.b
    Update: I have provided complete code example in answer below. I have built my own little custom XML-RPC server, and since I'd like to keep things simple, on both server and client side, what I would like to accomplish is to create a simplest possible client (in C# preferably) using WCF. Let's say that Contract for service exposed via XML-RPC is as follows: [ServiceContract] public interface IContract { [OperationContract(Action="Ping")] string Ping(); // server returns back string "Pong" [OperationContract(Action="Echo")] string Echo(string message); // server echoes back whatever message is } So, there are two example methods, one without any arguments, and another with simple string argument, both returning strings (just for sake of example). Service is exposed via http. Aaand, what's next? :)

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  • Reading a plist utf-8 value as utf-16

    - by ennuikiller
    I'm working on an iphone app that needs to display superscripts and subscripts. I'm using a picker to read in data from a plist but the unicode values aren't being displayed corretly in the pickerview. Subscripts and superscripts are not being recognized. I'm assuming this is due to the encoding of the plist as utf-8, so the question is how do a convert a plist string encoding from utf-8 to utf-16 ? Just a little more elaboration: If I do this it displays properly at least in a textfield: NSString *equation = @"x\u00B2 + y\u00B2 = z\u00B2" However if I define the same string in a plist and try to read it in and assign it to a string and display it on a pickerview it just displays the the encoding and not the superscripts. @Matt: thanks for your suggestion the unicode is being escaped that is \u00B2 = \u00B2. Googling for "escaped values in plists" returned no useful results, and I haven't been able to use the keyboard cmd-ctrl-shift-+ to work. Any further suggestions would be greatly appreciated!!

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  • RadComboBox Just Freezes

    - by ProfK
    I have two examples now, my first two, where a place a RadComboBox on a web form, and populate it, but it won't drop down. I first picked this up on a big web application project, and then on a simple little web site project, for investigating this. In my sample project, it is the only control on the page besides the ScriptManager, and there are rows in the data source, and it does display the first row, but it just doesn't drop down. Any ideas on this? BTW, this is theh first time I've restored this project onto a new XP machine, where I previously was working on a Vista machine that died.

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  • Ruby/Rails display general screen when modifications being performed on server

    - by john chan
    I have a ruby on rails app running a server and sometimes it needs to be taken down for updates/etc. As of now, one way I see to have a general display screen during update periods (when the app is down) is to substitute the files within /srv/www/ directory to just have it display a general screen everywhere that the user could possibly navigate to. I also thought of having a central controller file that connects all others (essentially a main) but this seems counter intuitive for rails. There are many external links to these different components of the site that the user could navigate to from outside and I need to make sure that they always receive this general update screen when the app is taken down for a little. I was wondering if anyone had any other ideas.... maybe a library or something like that, I can't seem to find anything online. any suggestions would be appreciated. Thanks

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  • iphone basic game loop

    - by Mrigank Gupta
    I am little confused with my Opengl game loop. as I am skipping touch events some times. My game loop is some thing like this.. I have ScreenManager which draw and update all game screens who so ever has control.In update I am checking input of all screen also. if input state changes, then whichever screen has control, consume touches. EaglView draw update | | ScreenManager.draw ScreenManager.update -> handle input stack ___________ ___________ of ___________ ___________ screen ___________ ___________ Problem comes.. I am changing input state as touch begun and end methods called. but sometimes In my game loop both touchbegun/end methods get called between two updates and I am missing events. I guess approach is not good. can you guys share your approach to this problem.

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  • How to pass string file path as HttpPostedfile to fileupload control?

    - by rahul
    Hi friends, I have got little tricky issue i.e I am using API of a product which has few methods for uploading image. The UI part of the product has one file upload control which takes files and convert that into binary and save it to database. In the coding part they are using one method where they send this fileupload.postedfile as one of the input parameter to the method. Now my requirement is, I have a directory where there are hundred of files which i have to send each file one by after another to this method as a input. Now i wish to know how to pass a file name as "HttpPostedFile" to that method as a parameter. I have no other option other than using that API (our clients requirement). Thanks

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  • SSRS 2008 - How to hide the plus icon in a group visibility toggle cell

    - by Daniel Coffman
    I have a report that shows or hides columns in a group based on a header cell. SSRS makes this pretty easy and is kind enough to place a little plus/minus icon in the toggling cell. I want to HIDE this plus/minus icon when there is only one column of data in the subgroup, because it shows that one column by default so expanding the group doesn't do anything. This really only applies to one specific group, because all the others always have more than one column of data, so a way to hide only the icon for a specific group would be fine. JavaScript won't work (I don't think) because the client ID of the plus/minus image is generated by the report and changes with each generation. see this image for more clarity: http://imgur.com/vqaQA.png

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  • Jquery Uploadify checkscript

    - by Kevin McPhail
    I am trying to implement the checkscript feature of uploadify in an asp.net mvc view but i can't determine what the key is i should be using on the controller side. Below is the php script but i am not very familiar with php and can't determine what php is scraping out of the httprequest. Has anyone implemented this? The documentation is a little sparse (as in nonexistent). $fileArray = array(); foreach ($_POST as $key => $value) { if ($key != 'folder') { if (file_exists($_SERVER['DOCUMENT_ROOT'] . $_POST['folder'] . '/' . $value)) { $fileArray[$key] = $value; } } } echo json_encode($fileArray); ?>

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  • C# Solution - How many projects?

    - by Oskar Kjellin
    Hey, I googled this a little but couldn't find a good result. Right now I'm building a web site and I'm trying to make it as correct as possible from a design point of view from the beginning. The problem I'm now facing is that when deciding to start with logging I needed a project to place this code in. As I could not find a suitable place in my currect projects I thought: hey, why not a logging class library? Is there a general guideline on how many projects you should have? I know this would be a rather small project but it would be nice to entirely get it out of my way! Any hints are appreciated :)

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  • MIPS (or SPIM): Loading floating point numbers...

    - by James
    Hey hey, I am working on a little mini compiler while trying to learn some MIPS here. Here's my issue: MIPS has an instruction li (load immediate) which would work like this li $5,100 which would load 100 into register 5. However, I need to load floats into registers right now and am struggling with figuring out a way to do it...since li $5,2.5 does not work. Anyone have any advice? I am working in C, I was thinking I could somehow get the integer representation of the float I am working with (i.e. so the floats binary representation == the ints binary representation) then load the "integer" into the register and treat it like a float from then on. Maybe its too late but Im stuck right now.

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  • QTableWidget signal cellChanged(): distinguish between user input and change by routines

    - by crabman
    i am using PyQt but my question is a general Qt one: I have a QTableWidget that is set up by the function updateTable. It writes the data from DATASET to the table when it is called. Unfortunately this causes my QTableWidget to emit the signal cellChanged() for every cell. The signal cellChanged() is connected to a function on_tableWidget_cellChanged that reads the contents of the changed cell and writes it back to DATASET. This is necessary to allow the user to change the data manually. So everytime the table is updated, its contents are written back to DATASET. Is there a way to distinguish if the cell was changed by the user or by updateTable? i thought of disconnecting on_tableWidget_cellChanged by updateTable temporarily but that seems to be a little dirty.

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  • jQuery UI Sortable - serialize multiple columns

    - by oshirowanen
    Dear stackoverflow experts, I have a little script which allows me to use jQuery to sort div tags nicely between 3 columns. The jQuery can be seen below: $(".column").sortable( { connectWith: '.column' }, { update: function(event, ui) { alert($(this).sortable('serialize')) } }); If I move an item from column 1 to column 2, it will display 2 alerts, showing the serialized data for the 2 affected columns. The problem is, I need to know the column ids too, so I can eventually save the data into a database. Right now, if it is possible to just display the column id in an alert but, that will be enough for me to continue. Any help will be greatly appreciated. Thanks

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  • What is a proper way to pass a parameter to Set-Alias in powershell?

    - by Nick Gorbikoff
    Hello. A little background: I use PowerShell on windows xp at work and I set a bunch of useful shortcuts in Microsoft.PowerShell_profile.ps1 in My Documents, trying to emulate Mac environment inspired by Ryan Bates's shortcuts I have things like: Set-Alias rsc Rails-Console function Rails-Console {Invoke-Expression "ruby script/console"} Which works just fine when in command prompt I say: rsc #it calls the proper command However this doesn't work properly Set-Alias rsg Rails-Generate function Rails-Generate {Invoke-Expression "ruby script/generate"} So when I do : rsg model User which is supposed to call ruby script/generate model User all it calls is ruby script/generate #Dumping my params So how would I properly modify my functions to take params I send to functions? Thank you!!

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  • Setting HTTPONLY for CLASSIC ASP Session Cookie - URGENT HELP NEEDED PLEASE!!!

    - by E.Shafii
    Hello all, Does anyone know exactly how to set HTTPONLY on classic ASP session cookies? This is the final thing that's been flagged in a vulnerability scan and needs fixing ASAP, so any help is appreciated. ~~~A LITTLE MORE INFORMATION ON MY PROBLEM~~~ Can anyone please help me with this? I need to know how to set HTTPONLY on the ASPSESSION cookie created by default from ASP & IIS. This is the cookie automatically created by the server for all asp pages. If needed i can set HTTPONLY on all cookie across the site. Any help on how to do this would be massively appreciated. Thanks Thanks Elliott

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  • Converting EBNF to BNF

    - by Vivin Paliath
    It's been a few years since my computer-language class and so I've forgotten the finer points of BNF's and EBNF's and I don't have a textbook next to me. Specifically, I've forgotten how to convert an EBNF into BNF. From what little I remember, I know that one of the main points is to convert { term } into <term> | <many-terms>. But I don't remember the other rules. I've tried to look this up online but I can only find links to either homework questions, or a small comment about converting terms with curly braces. I can't find an exhaustive list of rules that define the translation.

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  • What exactly is the "Multi-threaded Debug DLL" Runtime Library option doing in VS 2008?

    - by GregH
    I have a solution in VS 2008 that creates a DLL. I then use that DLL in another application. If I go in to the DLL projects property pages and change the following configuration for a DEBUG build then the built dll no long provides the desired functionality. If I change it back and rebuild the DLL, then the DLL does provide the correct functionality: Property Pages = Configuration Properties = C/C++ = Code Generation = Runtime Library If set to "Multi-threaded Debug DLL (/MDd)" then everything works as it should. I get the correct functionality from the DLL If set to "Multi-threaded DLL (/MD)" then the DLL does not function properly...no runtime errors or anything, it just doesn't work (The DLL is supposed to plot some lines on a map but does not in this mode). So the question is, why does using the /MDd flag result in correction functionality of the underlying code, while /MD results in incorrect functionality? A little background...somebody else developed the DLL in C++ and I am using this DLL in a VB.net application.

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  • What is the difference between DVCS systems?

    - by Stephen
    What is the difference between DVCS systems? Seriously, wikipedia doesn't cover it well, and I read an article on HN recently comparing git and bzr in some detail, but the author admitted knowing little about mercurial, and the other options didn't get mentioned. (I'm happily using fossil on small win/mac/Linux projects) Please restrict answers to the DVCS aspects of the tool, e.g. The basic unit of vc in hit is the repository- in bazaar it is the branch(http://unspecified.wordpress.com/2010/03/26/why-git-aint-better-than-x/). bugtrackers and wikis are nice, but I'm really interested in the tools themselves, rather than any extras. Unfortunately SO demands a single 'right answer', so I'm making the question community wiki in the hope that users will contribute their knowledge.

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  • jQuery UI Dialog Button Icons

    - by Cory Grimster
    Is it possible to add icons to the buttons on a jQuery UI Dialog? I've tried doing it this way: $("#DeleteDialog").dialog({ resizable: false, height:150, modal: true, buttons: { 'Delete': function() { /* Do stuff */ $(this).dialog('close'); }, Cancel: function() { $(this).dialog('close'); } }, open: function() { $('.ui-dialog-buttonpane').find('button:contains("Cancel")').addClass('ui-icon-cancel'); $('.ui-dialog-buttonpane').find('button:contains("Delete")').addClass('ui-icon-trash'); } }); The selectors in the open function seem to be working fine. If I add the following to "open": $('.ui-dialog-buttonpane').find('button:contains("Delete")').css('color', 'red'); then I do get a Delete button with red text. That's not bad, but I'd really like that little trash can sprite on the Delete button as well.

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