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• Creating a System.Windows.Controls.Image throws an exception - how do I use the dispatcher to instan

  - by Scott Whitlock

  I'm running my unit tests on a piece of code that does the following in the test: Assert.IsNotNull(target.Icon); Inside the getter for the Icon property, I'm doing this: System.Windows.Controls.Image img = new System.Windows.Controls.Image(); That's throwing this exception: System.InvalidOperationException : The calling thread must be STA, because many UI components require this. I understand what that means, and I understand that I need to use the Dispatcher, but I'm a bit confused about how or why... this is a property of my ViewModel and I don't get any of these exceptions when running the application. Other info: this only started failing when I upgraded to .NET 4.

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• Replace <Unknown Source> in Java Rhino (JSR223) with actual file name

  - by Lord.Quackstar

  Hello everyone, In my code, all of the scripts are contained in .js files. Whenever one of the scripts contains an error, I get this: javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "nonexistant" is not defined. (<Unknown source>#5) in <Unknown source> at line number 5 What bugs me is the <Unknown Source>. Multiple files are in one ScriptContext, and it can be hard to track down an error. It also looks horrible. Is there a way to replace <Unknown Source> with the actual file name? None of the methods I see support passing a File object, so I'm really confused here.

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• Can I delete a differential backup from SQL Server 2005?

  - by BlueMonkMN

  I often like to create backups when testing the software I work on, and will sometimes create a differential backup if I want to be able to get back to multiple previous states. However, sometimes I realize that I forgot one thing I wanted to include in a differential backup, or I no longer need a previous differential backup. Sometimes I simply want to create a new scenario from the original base image and start working with a new series of differential backups. So I'd like to be able to delete some older differential backups so I don't get confused about which ones I'm using. But I can't find any way to delete just the differential backups, selectively or all at once.

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• Oracle Reports SELECT INTO Not Selecting

  - by Kevin Cruz

  I'm working on a Report in Oracle Reports Builder, and having issues with my AFTERPFORM trigger. When viewing the report, it seems like the year is being processed properly, while the period and subperiod are using their initial values. I'm confused because they are the exact same select statement, but are not working as intended. Any help would be greatly appreciated! function AfterPForm return boolean is v_subpdenddt_user date; v_subpdenddt_max date; v_rowcount integer; begin select value into year from wos_report_param where parameter = 'year' and sequence_num = :sequencenum; select value into period from wos_report_param where parameter = 'period' and sequence_num = :sequencenum; select value into user_subpd from wos_report_param where parameter = 'subpd' and sequence_num = :sequencenum;

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• Correct Path for Git Remote Add from Amazon EC2 Instance to OSX Client Machine

  - by filmnut

  I'm trying to do a git remote add from a repository that sits on a remote Amazon AMI back to a cloned copy of the SAME repository that is sitting on my local OSX machine. I'm confused about what file path to use. I assume it's something like: git remote add my_clone <OSX_User_Name>@<OSX_HOST_NAME>:<PATH_TO_CLONED_REPO> I obviously know what my <OSX_User_Name> is, and I can figure out my <PATH_TO_CLONED_REPO>, but I have no idea how to determine a <OSX_HOST_NAME> that would actually work. Can I just put in my external IP address, followed by my machine's internal IP address? (Note that I'm working behind a router.) Is ssh:// the correct protocol? Do I need to set up ssh access from the Amazon EC2 machine to the local OSX machine?

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• Strange type in c++

  - by Cemre

  I have a method with the prototype: bool getAssignment(const Query& query, Assignment *&result); I am a bit confused about the type of the second param (Assignment *&result) since I don't think I have seen something like that before. It is used like: Assignment *a; if (!getAssignment(query, a)) return false; Is it a reference to a pointer or the other way around ? or neither ? Any explanation is appreciated. Thanks.

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• different ways of getting the IP Address

  - by Sachindra

  I was actually going through the question 1636644 .. and got confused with this " The getenv() function access to any environment variable to get the related value! " Also .. " It would probably be better to use $_SERVER['REMOTE_ADDR']; to prevent incompatibilities between servers. " what kind of compatibility issue can this be ?? Lastly, it says $_SERVER is an array with many elements but I find only the IP Address there .. does this array store anything else too??? apologies for all these questions packed in one .. this is bcoz these are all related ..

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• Objective C memory management question with NSArray

  - by Robert

  I am loading an array with floats like this: NSArray *arr= [NSArray arrayWithObjects: [NSNumber numberWithFloat:1.9], [NSNumber numberWithFloat:1.7], [NSNumber numberWithFloat:1.6], [NSNumber numberWithFloat:1.9],nil]; Now I know this is the correct way of doing it, however I am confused by the retail counts. Each Object is created by the [NSNumber numberWithFloat:] method. This gives the object a retain count of 1 dosnt it? - otherwise the object would be reclaimed The arrayWithObjects: method sends a retain message to each object. This means each object has a retain cont of 2. When the array is de-allocated each object is released leaving them with a retain count of 1. What have I missed?

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• Desgining a database with flexible user profile

  - by Mughrabi

  Hi, Am working on a design where I can have flexible attributes for a user & am confused how to continue the design of the schema. I made a table where I kept system needed information called users id username password Now, I wish to create a profile table and have one to one relation where all the other attributes in profile table such as email, first name, last name..etc. My question is, is there a way to add a third table in which even profile will be flexible if my clients need to create a new attribute he/she won't need any customization to the code? Regards,

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• JSF 2 Content Controller (pull in content based on URI)

  - by gerges

  Hey All, I'm new to JSF and am trying to make a content controller. Basically whenever someone makes a request to www.myapp.com/external/** I'd like to forward to a controller that pulls external content into a page template and spits it out to the user. I was able to achive this pretty easily in Spring 3, but I'm a little confused on where to start with JSF. I feel like I'd need to create a custom servlet to handle /external/**? But what would the class of this servlet be? What would it consist of? Any help is appreciated!

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• Is JSONRequest a global Javascript object ?

  - by Anth0

  My goal is to asynchronously call a URL via POST request (REST Webservice) to increment a statistic on one of my object. I am a newby web developper and I discovered JSON yesterday. Since JSON seems a lot popular and handy I went to www.json.org and discovered a JSONRequest object which seems to able one to send POST/GET request asynchronously but I can't get it work. Is it a global Javascript object or do I need to add some files ? I am a little bit confused since I've found a Firefox plugin extension for JSONRequest but I don't understand its purpose.

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• Ajax response seems to be getting lost

  - by Ringo Blancke

  I'm using the ddslick jquery dropdown plugin in conjunction with my Rails app. In view1, I have $('#challenges_dropdown').ddslick({ <snipped> onSelected: function (data) { $.ajax({ url: "/load_data", type: "GET", data: {"id": data.selectedData.value} }); } }); I.e., I make a call to my controller to load_data. The controller receives this correctly and then at the end, makes a call to render a separate view render "data" This view contains a script snippet that needs to run in order to update some elements of my original view. For some reason, this script snippet is just not running. I'm very confused. When I use a regular link with data-remote="true", then the whole process works perfectly. However, when I make an AJAX call, it fails. What's going on?? Thanks! Ringo

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• why a .net 1.1 code gets compiled in 2.0 and throws an error?

  - by Sanjeev

  Hi I have a web projects which is build in VS2003/1.1 framework and deployed in a webserver with IIS setting specified to 1.1 framework.lets say project X I also have another web project which is build with VS2008/2.0. IIS setting - ASP version 2.0 is selected and all pages are assigned to run with 2.0* dlls. Lets say project Y Now the problem seem to be when I hit project x, sometimes it throws errors like "error BC30456: 'Initialize Culture' is not a member of 'ASP.**" During troubleshooting this issue, I browsed through 2.0 Temporary ASP.Net files "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\" and found temp files generated for project X. (HUH?) How/why 1.1 project gets compiled in 2.0 only when it errors out.( or we could put it this way that it errors out every time it gets compiled in 2.0 which it is not supposed to) I'm confused as to why this is happening when project X has nothing to do with .net 2.0.

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• Authenticating model - best practices

  - by zerkms

  I come into ASP.NET from php so the reason why i ask my question is because it's totally different nature of how application works and handles requests. well, i have an exists table with user creditians, such as: id, login, password (sha hashed), email, phone, room i have built custom membership provider so it can handle my own database authentication schema. and now i'm confused, because User.Identity.Name contains only user's login, but not the complete object (i'm using linq2sql to communicate with database and i need in it's User object to work). at php applications i just store user object at some static method at Auth class (or some another), but here at ASP.NET MVC i cannot do this, because static member is shared across all requests and permanent, and not lives within only current request (as it was at php). so my question is: how and where should i retrieve and store linq2sql user object to work with it within current and only current request? (after request processed successfully i expect it will be disposed from memory and on next request will be created again). or i'm following totally wrong way?

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• About a Class Object

  - by Chicko Bueno

  I have a very basic question about a class object. After the class has been created, we need to create a class object. At this point, I'm a bit confused to make either *object or object. Example: CClass object CClass *object What is the difference both of them? And to access class function i need to use dot '.' and arrow '->'. I know dot and arrow used to access class function, but what is the significant meaning for both dot and arrow?

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• meaning of (\/?) in regex / is (\w+)([^>]*?) a redundancy?

  - by thomas

  this regular expression should match an html start tag, I think. var results = html.match(/<(\/?)(\w+)([^>]*?)>/); I see it should first capture the <, but then I am confused what this capture (\/?) accomplishes. Am I correct in reasoning that the ([^>]*?)> searches for every character except > = 0 times? If so, why is the (\w+) capture necessary? Doesn't it fall within the purview of [^>]*?

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• Querying Same Lookup Table With Multiple Columns

  - by dmaruca

  I'm a bit confused on this. I have a data table structured like this: Table: Data DataID Val 1 Value 1 2 Value 2 3 Value 3 4 Value 4 Then I have another table structured like this: Table: Table1 Col1 Col2 1 2 3 4 4 3 2 1 Both columns from Table1 point to the data in the data table. How can I get this data to show in a query? For example, a query to return this: Query: Query1 Column1 Column2 Value 1 Value 2 Value 3 Value 4 Value 4 Value 3 Value 2 Value 1 I'm familiar enough with SQL to do a join with one column, but lost beyond that. Any help is appreciated. Sample sql or a link to something to read. Thanks! PS: This is in sqlite

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• mod_rewrite per-dir redirection returning a 400

  - by Eaterrust

  I moved my images directory to a different folder, and now I want to redirect all images requests from that folder to the new one. I do not have access to the main configuraion file, so I'm doing this in a .htaccess. I tried this, and it works:     RewriteCond %{REQUEST_URI} old_dir/.+.(jpg|png|gif)$     RewriteRule old_dir/(.+[^/]+..+)$ $1 [L,PT] But since they have permanently moved, I want to do a proper redirect, so I added the [R] flag, like this:      %{REQUEST_URI} old_dir/.+.(jpg|png|gif)$     RewriteRule old_dir/(.+[^/]+..+)$ $1 [L,PT,R] But the server gets confused, and returns a 400, so I looked at the log file, and this is what happens:     strip per-dir prefix: C:/wamp/www/natrazyle/old_dir/images/banner.jpg - old_dir/images/banner.jpg     applying pattern 'old_dir/(.+[^/]+..+)$' to uri 'old_dir/images/banner.jpg'     rewrite 'old_dir/images/banner.jpg' - 'images/banner.jpg'     add per-dir prefix: images/banner.jpg - C:/wamp/www/natrazyle/images/banner.jpg     explicitly forcing redirect with http://localhost/C:/wamp/www/natrazyle/images/banner.jpg As you can see, the full local path gets added after localhost I know I'm doing something wrong, I just can't figure it out myself. Any help would be greatly appreciated...

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• Confusion regarding a function definition in C

  - by user34790

  I found this function definition void *func(void *param) { } Actually, I have a certain confusion regarding this function definition. What does void * mean in the return type of the function as well as the argument. I am a beginner in C. So please don't mind. Thank you void *func(void *param) { int s = (int)param; .... } Well looking at the above program which I found. I think it should have been int *s = (int *)param; isn't it? I am confused

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• Adding a Google Calendar using apiClient

  - by EricCarmichael

  I'm finally able to get an Access Token, now I'm very confused as how to add a Calendar using only Google's provided apiClient. $apiClient = SiteController::getApiClient(); $service = new apiCalendarService($apiClient); $calendar = new Calendar(); $calendar->description = "What"; $service->calendars->insert($calendar); This produces: Error calling POST https://www.googleapis.com/calendar/v3/calendars?key=mykey: (400) Required Is there some documentation/examples on adding a Calendar? There are a ton of examples, it seems like, for simply adding an Event.

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• Why does this C program compile?

  - by AdmiralJonB

  I've just come across someone's C code that I'm confused as to why it is compiling. There are two points I don't understand. First, the function prototype has no parameters compared to the actual function definition. Secondly, the parameter in the function definition doesn't have an type. #include <stdio.h> int func(); int func(param) { return param; } int main() { int bla = func(10); printf("%d",bla); } Could someone please explain to me why this works? I've tested it in a couple of compilers and it works fine.

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• linux+apache+sqlite=death?

  - by acidzombie24

  The title is a joke. However it is serious as far as my app is concerned. I am running apache with mod mono and my asp.net app is using mono sqlite as its db. When i refresh the page twice i get the DB is locked error. The folder it is in is chmod 777. The webapp is creating sqlite.db and sqlite.db-journal but it doesnt seem to be able to delete the journal. i'm confused. What permissions do i need to set these? i tried precreating the files using 777 and had no luck.

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• Old functions return 'undefined' error once I add a jquery reference

  - by Lapa

  Disregard this question: I've simply confused <script src="..."></script> tag and <script> [some functions] </scipt> tags. I have this function function OnLoad() { ShowHideConfirmAnswers(); return true; } triggered by onload event: <body onload=OnLoad()> It works fine until I add src="jquery-1.4.2.js" to the script element. From this moment I get "OnLoad is not defined" error, and the same happens to every other javascript function.

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• How should I display invalid options?

  - by mafutrct

  I've got a WinForms client-server app that displays various offers in a list. Every user (client) has a "rating". An offer consists of various data including a minimum and maximum rating. If a user's rating does not fall in that interval, he should not be able to take the offer. Of course I could just perform some server filtering and send a list of offers prefiltered for each user to the client application. But that would surely, and rightfully, lead to confused requests "Why isn't this offer showing up? I know it exists, it shows up on [other user]'s screen." How should I handle this? My favorite solution so far is to grey out the offer and add a tooltip "You can't take this offer because your rating is too high/low" while displaying greyed-out offers at the bottom of the list to leave the actually valid offers easily visible on top of the list.

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• C++ destructor issue with std::vector of class objects

  - by Nigel

  I am confused about how to use destructors when I have a std::vector of my class. So if I create a simple class as follows: class Test { private: int *big; public: Test () { big = new int[10000]; } ~Test () { delete [] big; } }; Then in my main function I do the following: Test tObj = Test(); vector<Test> tVec; tVec.push_back(tObj); I get a runtime crash in the destructor of Test when I go out of scope. Why is this and how can I safely free my memory?

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