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  • Reusing Object does not work properly

    - by balexandre
    Hi guys, I'm reusing a created Object just to change a Date and the ordinal value, but at the end I get 6 objects exactly as the last. in other words, I'm adding the object as a Reference and I should add as a Value What should I inherit my Object to have the Copy() method ? RecurringPayment rp, copy; rp = new RecurringPayment { ... } payments.Add(rp); // add first object copy = rp; // Copy the original element for (int i = 1; i <= 5; i++) { copy.NextPaymentDate = copy.NextPaymentDate.AddDays(copy.RecurringTime * 7); copy.OrderOrdinal = copy.OrderOrdinal + 1; payments.Add(copy); // add 5 more with X weeks ahead } Thank you

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  • Best practice for sharing code between OSX and IOS app

    - by Alberto
    I am creating an iOS version of an existing OSX app and am wondering what the best practices are for sharing code between the two. The code in question only depends on the foundation framework and the Sqlite dynamic library, so it should compile and run fine on both platforms. It seems to me there are three possible options: Create a single project with and OSX and an IOS targets, add source files to each target as appropriate. Create two separate projects for the OSX and IOS apps, put shared code in a common location in the workspace and add it as reference to both projects. Create three projects: OSX app, IOS app and a shared static library with an OSX and an IOS targets; add each library target to the respective application. Is there any reason one of the above approaches may be better than the other two? If not, option 2 seems to be the simplest by far.

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  • Silverlight 4 accessing WCF Data Services: BeginInvoke frustrations.

    - by Gatmando
    Hi, I'm attempting to follow a pattern for performing WCF data service queries using the Silverlight 4 beta. The following is my code: public CodeTables() { CodeCountries = new ObservableCollection<dsRealHomes.CodeCountries>(); dsRealHomes.RealHomesEntities myClient = null; myClient = staticGlobals.RealHomesContext(); object userState = null; myClient.BeginExecute<dsRealHomes.CodeCountries>(new Uri("CodeCountries"), (IAsyncResult asyncResult) => { Dispatcher.BeginInvoke( () => { var test = myClient.EndExecute<dsRealHomes.CodeCountries>asyncResult).ToList(); } ); }, userState); } This is derived from a number of examples I've come across for WCF data services with silverlight. Unfortunately no matter how I try to implement the code i end up with the following error on 'Dispatcher.BeginInvoke': 'An object reference is required for the non-static field, method, or property (System.Windows.Threading.Dispatcher.BeginInvoke(System.Action)' Thanks

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  • Project roles discovery

    - by Lirik
    I have a school project in which we're going to write a financial engine prototype by a group of 4 people. Most of us have never met each other before, so I'm trying to create a questionnaire to help us find the appropriate roles for each team-member. We have the following responsibilities: Database design Programming User interface design Training Documentation / technical writing Network design Project management Business analysis Testing And we have the following roles: Project Manager Developer Tester Business Analyst Our group has people with various experience: a full-time graduate student, an associate director at the CME (Chicago Mercantile Exchange), full-time professionals, etc. Do any of you know of any tools that would help build a questionnaire or do you have a reference to an online questionnaire that can help us identify the most suitable role(s) for each team member?

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  • What's your favorite vim color scheme?

    - by Nathan Long
    Wwhat is your favorite vim color scheme? I haven't found a great one yet, but what I'd like, in order of priority, are: Never confuses me. For example: When matching braces are highlighted, it's easy to see where the cursor is When I've got two or more tabs open, I can read all the titles and easily tell which one is active (maybe inactive ones look faded out) Very readable, both for regular code and for highlighting It would be nice if it was attractive I found one scheme that was ALMOST perfect (peaksea), but not quite - I couldn't read the titles of non-active tabs. So on a related note: anybody know a clear reference page for tweaking the colors of specific items?

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  • Database design: circular references

    - by SlappyTheFish
    I have three database tables: users emails invitations Emails are linked to users by a user_id field. Invitations are also linked to users by a user_id field Emails can be created without an invitation, but every invitation must have an email. I would like to link the emails and invitations tables so it is possible to find the email for a particular invitation. However this creates a circular reference, both an invitation and an email record hold the id for the same user. Is this bad design and if so, how could I improve it? My feeling is that with use of foreign keys and good business logic, it is fine.

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  • errorCode=003001; statusCode=403; source=Throttling Policy

    - by ihoka
    Lately, in our app using IPP data services, we have encountered these errors from time to time. <RestResponse xmlns="http://www.intuit.com/sb/cdm/v2"> <Error RequestId="49f7926a9aa84cfc8289534801dee72d"> <RequestName>ErrorRequest</RequestName> <ProcessedTime>2012-12-07T10:10:59+00:00</ProcessedTime> <ErrorCode>3001</ErrorCode> <ErrorDesc>message=This client has made too many consecutive requests over too short a period of time. Please wait a short amount of time before attempting to submit again; errorCode=003001; statusCode=403; source=Throttling Policy</ErrorDesc> </Error> </RestResponse> Can't find any reference to a "Throttling Policy" or error code "3001" anywhere in the IPP documentation. Any help is appreciated.

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  • Counting number of children in hierarchical SQL data

    - by moontear
    for a simple data structure such as so: ID parentID Text Price 1 Root 2 1 Flowers 3 1 Electro 4 2 Rose 10 5 2 Violet 5 6 4 Red Rose 12 7 3 Television 100 8 3 Radio 70 9 8 Webradio 90 For reference, the hierarchy tree looks like this: ID Text Price 1 Root |2 Flowers |-4 Rose 10 | |-6 Red Rose 12 |-5 Violet 5 |3 Electro |-7 Television 100 |-8 Radio 70 |-9 Webradio 90 I'd like to count the number of children per level. So I would get a new column "NoOfChildren" like so: ID parentID Text Price NoOfChildren 1 Root 8 2 1 Flowers 3 3 1 Electro 3 4 2 Rose 10 1 5 2 Violet 5 0 6 4 Red Rose 12 0 7 3 Television 100 0 8 3 Radio 70 1 9 8 Webradio 90 0 I read a few things about hierarchical data, but I somehow get stuck on the multiple inner joins on the parentIDs. Maybe someone could help me out here. moon

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  • XCode toolchain error: dyld: Symbol not found: _objc_collect_if_needed

    - by freespace
    I have been seeing the following error message a lot whenever I build something using the simulator: dyld: Symbol not found: _objc_collect_if_needed Referenced from: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk/System/Library/Frameworks/Foundation.framework/Foundation Expected in: /usr/lib/libobjc.A.dylib in /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk/System/Library/Frameworks/Foundation.framework/Foundation I am running XCode 3.2.2 on OS X 10.6.3, and have reinstalled the SDK twice with no avail. This error makes running any code on the simulator something of a Russian Roulette, but with 5 out of 6 chambers loaded. I have checked the files mentioned in the error message, and they all checkout as being present. This sometimes go away if I restart XCode. Other times I have to logout, or even restart. And sometimes nothing works. I have googled this, even tried apple's developer forums. Other than a reference to this in the MonoTouch list, this bug appears to be completely unknown otherwise. Anything help would be greatly appreciated - this is a real PITA. Cheers, Steve

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  • Representing Objective C Protocols on UML class diagrams

    - by joec
    How should i correctly reference protocols on a UML class diagram? For example my ListViewController conforms to the UITableViewDataSource and UITableViewDelegate protocols... where do i put the cellForRowAtIndexPath or numberOfRowsInSection methods? ... in ListViewController where they are implemented or in something like this: <<Protocol>> UITableViewDataSource --------------------- --------------------- -numberOfRowsInSection If i did the latter what would be the association between the ListViewController class and the protocol box be? All i have to show is how i hook into Cocoa Touch some how. Thanks.

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  • Android and Protocol Buffers

    - by spaceboy2000
    I am writing an Android application that would both store data and communicate with a server using protocol buffers. However, the stock implementation of protocol buffers compiled with the LITE flag (in both the JAR library and the generated .java files) has an overhead of ~30 KB, where the program itself is only ~30 KB. In other words, protocol buffers doubled the program size. Searching online, I found a reference to an Android specific implementation. Unfortunately, there seems to be no documentation for it, and the code generated from the standard .proto file is incompatible with it. Has anyone used it? How do I generate code from a .proto file for this implementation? Are there any other lightweight alternatives?

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  • deploying a styles library for plugin developers

    - by bitbonk
    I have an application that my customers can write plugins (that have WPF UIs) for. Now I would like to expose a set of styles as a library that they can use and that will help them with the development of the UIs sO they don't have to reivent the weel. How would I idealy expose those styles without actually having to deploy a lot of xaml files? How is something like this usually done in WPF so it does not break tooling support (blend, vs). How do I expose it and how does the cusomer reference those styles?

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  • Is it possible to mask CALayer in iPhone?

    - by Eonil
    I'm trying to mask CALayer with a bitmap image. And I failed masking CALayer. My code is: // 'PreloadViewController layerWithImageNamed' create a layer and set it's contents as specified UIImage. CALayer* title = [PreloadViewController layerWithImageNamed:@"pinkhug_txt.png"]; [[[self view] layer] addSublayer:title]; CALayer* title_mask = [PreloadViewController layerWithImageNamed:@"hug_mask.png"]; [title setMask:title_mask]; The Apple reference says "CALayer in iPhone does not support mask property". But there is a postings about this on SO. Is it possible? Or what's wrong with my code?

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  • Convert graph in to data points using Mechanical Turk?

    - by user224303
    I looked around but did not see anyone using Mechanical Turk for this. I've heard of the service, but never used it before. I need to take the following graph and digitize it so I get a list of data points for each line (noting that there are two Y-axes, and thus depends on which line we are talking about). This is pretty time consuming for me, and I saw other posts on StackOverflow about digitizing software doing a poor job at this. Would Mechanical Turk be well suited to my task? Here is the graph for reference: http://www.yourpicturehost.com/dyno_hbspeed.jpg

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  • POSIX threads and signals

    - by Donal Fellows
    I've been trying to understand the intricacies of how POSIX threads and POSIX signals interact. In particular, I'm interested in: What's the best way to control which thread a signal is delivered to (assuming it isn't fatal in the first place)? What is the best way to tell another thread (that might actually be busy) that the signal has arrived? (I already know that it's a bad idea to be using pthread condition variables from a signal handler.) For reference about why I want this, I'm researching how to convert the TclX package to support threads, or to split it up and at least make some useful parts support threads. Signals are one of those parts that is of particular interest.

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  • Javascript top variable in IE8

    - by Jim Rootham
    I am trying to reference a javascript function in a .js file loaded in my main page from an iframe using the 'top' variable. It works in FF, Safari, and IE6 but not in IE8. The snippet is (assigned to onmouseover): top.set_image(this, 'images/login_h.png') Where set_image is my function. The error is "Object does not support this function" Also, I have been looking for the definition of top. I can't find it in the ECMAScript specification or the w3schools site and Google is unhelpful (who'da thunk top was a common word?).

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  • View problem - how to show integer from activity in XML?

    - by Oliver Goossens
    Hi there, I started two days ago with android, gone through the hello android stuff and also started to read the Hello Android book, which is great. PROBLEM: I use in my app - VERY EASY APP- the XML output. So basically the main activity just tells the android to show the XML layout of main. But what if I have in the activity - code defined integer variable and I want this integer variable also be shown on the display? How do I PUSH the integer variable to the XML??? From main XML reference to other strings in XML is easy - @string/app_name ... but how do I use the integer variable from the activity? Please help Thank you Oliver

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  • How to be sure that my MVC project is runting on the correct version after upgrade to vs2010?

    - by Stephane
    I just installed visual studio 2010 and upgraded my MVC project (which was running on MVC RC2 in visual studio 2008). visual studio 2010 updated every project file to target the framework 4.0. But the system.web.dll is pointing to C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 2\Assemblies\System.Web.Mvc.dll in VS2010 object browser, I have every dll showing up in multiple versions as expected (3.5.0.0 and 4.0.0.0) except for the System.Web.Mvc dll which doesn't show any version and points to the path I mentioned above. Isn't this namespace point to the Framework folder like the System.Web namespace? C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.0\System.Web.dll

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  • DDD and IOC Containers

    - by MegaByte
    Hi Im fairly new with DDD and Im trying to use IOC in order to loosen up my tightly coupled layers :) My C# web application consists of a UI, domain and persistence layer. My persistence layer references my domain layer and contains my concrete repository implementations and nhibernate mappings. Currently my UI references my domain layer. My question : How do I use an IOC container to inject my concrete classes, in my persistence layer, into my domain layer? Does this meen that my UI should also reference my persistence layer?

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  • SQL Server: avoiding hard coding of database name in cross-database views

    - by codeulike
    So, lets say you have two SQL Server Databases on the same server that reference each others tables in their Views, Functions and Stored Procedures. You know, things like this: use database_foo create view spaghetti as select f.col1, c.col2 from fusilli f inner join database_bar.dbo.conchigli c on f.id = c.id (I know that cross-database views are not very good practice, but lets just say you're stuck with it) Are there any good techniques to avoid 'hard coding' the database names? (So that should you need to occasionally re-point to a different database - for testing perhaps - you don't need to edit loads of views, fns, sps) I'm interested in SQL 2005 or SQL 2008 solutions. Cheers.

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  • How to enable Line numbering in Visual Studio

    - by Cyclone
    Why doesn't VS have any sort of line numbering? Is there any way to enable it, or a plugin for it? I know, the number of lines of code in a program doesn't matter, but sometimes it is nice to know how long a program is, or what line number something is for reference. I can't seem to find that as an option anywhere, to my surprise. Thanks for the help! This is Visual Studio 2010 Ultimate. (if you have read my older questions, I've been using 2008 Express until now.)

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  • Using Proguard for Android in Eclipse Problem

    - by Chris
    I have taken a fresh install of Eclipse and all the latest Android tools and want to use Proguard on existing project, but for now I have created a new blank one. I have added a proguard.cfg file to my project added proguard.config=proguard.cfg to my default.properties Now when I try to export I get the following error [2010-12-12 10:36:35 - ApplicationTest] Proguard returned with error code 1. See console [2010-12-12 10:36:35 - ApplicationTest] 'C:\Program' is not recognized as an internal or external command, [2010-12-12 10:36:35 - ApplicationTest] operable program or batch file. [2010-12-12 10:36:35 - ApplicationTest] '-jar' is not recognized as an internal or external command, [2010-12-12 10:36:35 - ApplicationTest] operable program or batch file. I know it means there is a filepath setup incorrectly, question is where the heck is as I have looked through the general properties and project properties and can't see any reference to proguard or obfuscation so am stuck on what to change Any help appreciated.

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  • LINQ query checks for null

    - by user300992
    I have a userList, some users don't have a name (null). If I run the first LINQ query, I got an error saying "object reference not set to an instance of an object" error. var temp = (from a in userList where ((a.name == "john") && (a.name != null)) select a).ToList(); However, if I switch the order by putting the checking for null in front, then it works without throwing any error: var temp = (from a in userList where ((a.name != null) && (a.name == "john")) select a).ToList(); Why is that? If that's pure C# code (not LINQ), I think both would be the same. I don't have SQL profiler, I am just curious what will be the difference when they are being translated on SQL level.

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  • Fields of class, are they stored in the stack or heap?

    - by Mirek
    I saw a question yesterday which raised (for me) another question. Please look at the following code: public class Class1 { int A; //as I uderstand, int is value type and therefore lives in the stack } class Class2 { Run() { Class1 instance1 = new Class1(); instance1.A = 10; //it points to value type, but isnt this reference (on heap)? } } Or while creating the instance of Class1, its field types are created on the heap as well? But then I do not understand when it would really be on the stack as almost always you need to create an instance of object in order to use it fields.

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  • Get XAML from WPF Custom RichTextFormat

    - by Erika
    I've looked at other posts, but i cant seem to find something that works. I have a custom control WPF RichTextBox and would like to obtain the XAML from this control. I have tried the following //rt is the name of this particular custom richtextbox TextRange range = new TextRange(rt.Document.ContentStart, rt.Document.ContentEnd); MemoryStream stream = new MemoryStream(); range.Save(stream, DataFormats.Xaml); string xamlText = Encoding.UTF8.GetString(stream.ToArray()); return xamlText; but this doesnt seem to work :s I can access the rt.Document.Content start etc but it seems to crash there "Object Reference not set to instance of an object". I am using the richtextbox directly from the .xaml.cs so it should be initiated and so on :s. Any Ideas or other ways to get the XAML from a richtextbox pls? (i'm requiring the XAML cos i actually want to get the HTML.. if theres some other direct manner perhaps?)

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