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• C - how do i return multiple values from a function?

  - by hatorade

  if i have a function that produces a result int and a result string how do i return them both from a function? as far as i can tell i can only return 1 thing, as determined by the type preceding the function name

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• Cross-thread operation not valid: Control accessed from a thread other than the thread it was create

  - by SilverHorse

  I have a scenario. (Windows Forms, C#, .NET) There is a main form which hosts some user control. The user control does some heavy data operation, such that if I directly call the Usercontrol_Load method the UI become nonresponsive for the duration for load method execution. To overcome this I load data on different thread (trying to change existing code as little as I can) I used a background worker thread which will be loading the data and when done will notify the application that it has done its work. Now came a real problem. All the UI (main form and its child usercontrols) was created on the primary main thread. In the LOAD method of the usercontrol I'm fetching data based on the values of some control (like textbox) on userControl. The pseudocode would look like this: //CODE 1 UserContrl1_LOadDataMethod() { if(textbox1.text=="MyName") <<======this gives exception { //Load data corresponding to "MyName". //Populate a globale variable List<string> which will be binded to grid at some later stage. } } The Exception it gave was Cross-thread operation not valid: Control accessed from a thread other than the thread it was created on. To know more about this I did some googling and a suggestion came up like using the following code //CODE 2 UserContrl1_LOadDataMethod() { if(InvokeRequired) // Line #1 { this.Invoke(new MethodInvoker(UserContrl1_LOadDataMethod)); return; } if(textbox1.text=="MyName") //<<======Now it wont give exception** { //Load data correspondin to "MyName" //Populate a globale variable List<string> which will be binded to grid at some later stage } } BUT BUT BUT... it seems I'm back to square one. The Application again become nonresponsive. It seems to be due to the execution of line #1 if condition. The loading task is again done by the parent thread and not the third that I spawned. I don't know whether I perceived this right or wrong. I'm new to threading. How do I resolve this and also what is the effect of execution of Line#1 if block? The situation is this: I want to load data into a global variable based on the value of a control. I don't want to change the value of a control from the child thread. I'm not going to do it ever from a child thread. So only accessing the value so that the corresponding data can be fetched from the database.

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• json with Autocomplete?

  - by acidzombie24

  I am using Jquery Autocomplete I am also using the formatItem. I would like the output to be <json.key: json.value ex Name: Adam However i cant get the json data using the 4th param and i am getting the full json string as the 4th param and one result. How do i use json with this? is another autocomplete recommended? (this one looks pretty good...)

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• Running a simple VBA script to test a connection

  - by brohjoe

  I'm trying to test the connection of a GoDaddy SQL Server database. I'm getting an 'invalid connection string attribute.' What's wrong with this script? Dim cnn As ADODB.Connection Dim canConnect As Boolean Public Sub TestConnection() Set cnn = New ADODB.Connection cnn.Open "Provider=sqloledb;Data Source=GoDaddyServer.com;Initial Catalog=dBase1;UserID=userID; Password='password';" If cnn.State = adStateOpen Then canConnect = True cnn.Close End If MsgBox canConnect End Sub

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• What's faster Model.get(keys) or Model.get_by_id(ids, parent=None)

  - by WooYek

  I'm wondering is there a difference in terms of computing cost for the Model.get(keys) and Model.get_by_id(ids, parent=None) methods? Is there a server side computing advantage of using numeric id's over encoded string keys, or other way around? How big is the difference? PS. Sorry, if it's a dupe. I'm sure I read an article about it, but I cannot find it now.

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• Image rescale and write rescaled image file in blackberry

  - by Karthick

  I am using the following code to resize and save the file in to the blackberry device. After image scale I try to write image file into device. But it gives the same data. (Height and width of the image are same).I have to make rescaled image file.Can anyone help me ??? class ResizeImage extends MainScreen implements FieldChangeListener { private String path="file:///SDCard/BlackBerry/pictures/test.jpg"; private ButtonField btn; ResizeImage() { btn=new ButtonField("Write File"); btn.setChangeListener(this); add(btn); } public void fieldChanged(Field field, int context) { if (field == btn) { try { InputStream inputStream = null; //Get File Connection FileConnection fileConnection = (FileConnection) Connector.open(path); if (fileConnection.exists()) { inputStream = fileConnection.openInputStream(); //byte data[]=inputStream.toString().getBytes(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); int j = 0; while((j=inputStream.read()) != -1) { baos.write(j); } byte data[] = baos.toByteArray(); inputStream.close(); fileConnection.close(); WriteFile("file:///SDCard/BlackBerry/pictures/org_Image.jpg",data); EncodedImage eImage = EncodedImage.createEncodedImage(data,0,data.length); int scaleFactorX = Fixed32.div(Fixed32.toFP(eImage.getWidth()), Fixed32.toFP(80)); int scaleFactorY = Fixed32.div(Fixed32.toFP(eImage.getHeight()), Fixed32.toFP(80)); eImage=eImage.scaleImage32(scaleFactorX, scaleFactorY); WriteFile("file:///SDCard/BlackBerry/pictures/resize.jpg",eImage.getData()); BitmapField bit=new BitmapField(eImage.getBitmap()); add(bit); } } catch(Exception e) { System.out.println("Exception is ==> "+e.getMessage()); } } } void WriteFile(String fileName,byte[] data) { FileConnection fconn = null; try { fconn = (FileConnection) Connector.open(fileName,Connector.READ_WRITE); } catch (IOException e) { System.out.print("Error opening file"); } if (fconn.exists()) try { fconn.delete(); } catch (IOException e) { System.out.print("Error deleting file"); } try { fconn.create(); } catch (IOException e) { System.out.print("Error creating file"); } OutputStream out = null; try { out = fconn.openOutputStream(); } catch (IOException e) { System.out.print("Error opening output stream"); } try { out.write(data); } catch (IOException e) { System.out.print("Error writing to output stream"); } try { fconn.close(); } catch (IOException e) { System.out.print("Error closing file"); } } }

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• Where should I store custom permissions for my web app

  - by vikp

  Hi, I'm wondering where is the ideal place to store custom permissions in my web applications. For example I have the following permissions: AdminPermission ReadPermission WritePermission At the moment I store these in the static utilities class as the constant string type objects. Thank you

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• multi-line pattern matching in pyhon

  - by Horace Ho

  A periodic computer generated message (simplified): Hello user123, - (604)7080900 - 152 - minutes Regards Using python, how can I extract "(604)7080900", "152", "minutes" (i.e. any text following a leading "- " pattern) between the two empty lines (empty line is the \n\n after "Hello user123" and the \n\n before "Regards"). Even better if the result string list are stored in an array. Thanks!

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• How can I override TryParse?

  - by cyclotis04

  I would like to override bool's TryParse method to accept "yes" and "no." I know the method I want to use (below) but I don't know how to override bool's method. ... bool TryParse(string value, out bool result) { if (value == "yes") { result = true; return true; } else if (value == "no") { result = false; return true; } else { return bool.TryParse(value, result); } }

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• linq null parameter

  - by kusanagi

  how can i do the code static string BuildMenu(List<Menu> menu, int? parentId) { foreach (var item in menu.Where(i => i.ParentMenu == parentId || i.ParentMenu.MenuId == parentId).ToList()) { } } return BuildMenu(menuList,null); so if parentId==null then return only records i = i.ParentMenu == null but when parentId is 0 then return records with i.ParentMenu.MenuId == parentId

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• PowerShell locking File....

  - by Ben

  I am trying to do something very simple in powershell Reading the contents of a file Manipulation some string Saving the modified test back to the file function Replace { $file = Get-Content C:\Path\File.cs $file | foreach {$_ -replace "document.getElementById", "$"} |out-file -filepath C:\Path\File.cs } I have tried Set-Content as well. I always get unautorized exception. I can see the $file has the file content, error is coming while writing the file. Any help is appreciated. Ben

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• Generic Rails Route Representation?

  - by Flemish Bee Cycle

  Given one or more instances of a model (AR or DM, whatever). Is it possible to generate the route in the requirement form, by which I mean "/foos/:id" Given the route: resource :foo do resource :bar end generate_route_method [@foo,@bar] - "/foos/:id/bars/:id" I'm not talking about #foos_path or #polymorphic_path, rather, literally generating the string containing the wildcard components (i.e ":id"), the same as it would appear as if you did "rake routes".

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• Is it poor practice to build an SQL query using WHERE 1=1 AND ...

  - by Rob

  I'm writing a script that builds an SQL query by concatenating the string and adding conditions to the WHERE clause as needed. Would it be better practice to use WHERE 1=1 so that the first condition is satisfied and the script can just concatenate an AND x = 'y' to the query, or should I write the extra code to check if a clause has been added and if not, add the AND ? Confusing question, I know. Let me know if I need to be more clear. Rob

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• Launch app with URL

  - by Carlos Portes

  Hello everyone! I've read about intents in android but here goes my question. I'd like to launch an app on my android phone with the click of a link in the web browser. Example: If the link is "mycam://http://camcorder.com", "mycam://" acts as some kind of "tag" to launch my app but I'd like to pass "http://camcorder.com" as a string to that app on start. Help please! Thanks!

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• Problem in binding XQuery variables to program variables

  - by metdos

  In Qt Website, it is mentioned that we can bind XQuery variables to program variables, but I didn't understand how it decides variable type (QVariant::String,QVariant::Int). As long as I see it doesn't use any XML Schema. Do you any idea about how it decides variable type?

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• get property value

  - by laknath27

  HI, in my ontology i have the class called "festival" and it has property value called "CRISTMAS". it's a string type value.. son how can i get this value using JENA owl api.. CAN ANY ONE SHOW ME THE WAY :::::: THANKS

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• Ruby - Escape Parenthesis

  - by Todd Horrtyz

  I can't for the life of me figure this out, even though it should be very simple. How can I replace all occurrences of "(" and ")" on a string with "\(" and "\)"? Nothing seems to work: "foo ( bar ) foo".gsub("(", "\(") # => "foo ( bar ) foo" "foo ( bar ) foo".gsub("(", "\\(") # => "foo \\( bar ) foo" Any idea?

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• Problem running code with JML2 in Eclipse

  - by devoured elysium

  I'm having trouble running JML2 in Eclipse. I have the foolowing code: public class MainClass { public static void main(String[] args) { System.out.println(-9.0); } //@requires x >= 7.0 public static double getSquare(double x) { return Math.sqrt(x); } } The error I'm getting is: Is there anything wrong with the syntax I've used? Thanks

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• Numeric equivalent of an Excel column name

  - by Vivin Paliath

  The challenge The shortest code by character count that will output the numeric equivalent of an Excel column string. For example, the A column is 1, B is 2, so on and so forth. Once you hit Z, the next column becomes AA, then AB and so on. Test cases: A: 1 B: 2 AD: 30 ABC: 731 WTF: 16074 ROFL: 326676 Code count includes input/output (i.e full program).

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• How to create constant NSString by concatenating strings in Obj-C ?

  - by eric-morand

  Hi guys, I'm trying to instanciate a constant NSString by concatanating other NSString instances. Here is what I'm doing in my implementation file : static NSString *const MY_CONST = @"TEST"; static NSString *const MY_CONCATENATE_CONST = [NSString stringWithFormat:@"STRING %@", MY_CONST]; It leads to the following compilation error : Initializer element is not constant I suppose this is because stringWithFormat doesn't return a constant NSString, but since there is no other way to concatenate strings in Obj-C, what am I supposed to do ? Thanks for your help, Eric.

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• Trying to send a jpg image but getting unsupported format of jpg in my mail box. the code is given b

  - by Shalini Singh

  final Intent emailIntent = new Intent(Intent.ACTION_SEND); emailIntent.setType("image/jpeg"); emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] { "[email protected]" }); emailIntent.putExtra(Intent.EXTRA_SUBJECT, "this is the test"); emailIntent.putExtra(Intent.EXTRA_TEXT, "testing time"); emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(url));

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• How to change HEX value to EBCDIC char

  - by vininet

  What is the simplest way to convert HEX value to ebcdic char type in Java e.g. The example below will return at sign but I would like to get ebcidic equivalent i.e. space char.. String hex = "40"; char c = (char) Integer.parseInt(hex, 16);

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• Using grails service in domain class

  - by BlackPanther

  In my grails application I want use service.However it is always coming as null.I am using grails 1.1 version.How to solve this problem. Sample code: class A{ String name; def testService; static transients=['testService'] } Can we use service inside domain class?

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• how to put a drop down list in a flex advanced data grid

  - by Setori

  How can one put components into an advanced data grid? I wish to have a standard row with string items, in this row there is a date selector I want to put in, and in another cell of the row I want to put a drop down list box containing text "40" and "20" or you can manually edit the cell so that it displays what ever input you decide (other than 40 and 20) thanks so much

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• LINQ Guid toString()

  - by Sevki

  Hi this seems like it should work, from something in collectionofsomestuff select new SelectListItem(){Text = Name, Value = SomeGuid.ToString(), Selected = false}; When I try to do this it doesn't work give me error LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression. Is there a workaround?

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