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• simple assignment not working for me: iphone sdk

  - by tak

  Hi all. Can someone please explain to me why this simple assignment doesn't work. Here is the code loanDetails.currency = myCurrency; NSLog(@" Value %@",myCurrency); NSLog(@" Value %@",loanDetails.currency); NSLog(@" Value %@",myCurrency); the output is:- 2010-05-05 23:00:44.394 ExpenseTracker[3576:207] Value AFA 2010-05-05 23:00:44.750 ExpenseTracker[3576:207] Value (null) 2010-05-05 23:00:45.095 ExpenseTracker[3576:207] Value AFA And the definition is as: @property (nonatomic,retain) NSString *currency;

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• What is the reliable way to return error code from an MPI program?

  - by mezhaka

  The MPI standard (page 295) says: Advice to users. Whether the errorcode is returned from the executable or from the MPI process startup mechanism (e.g., mpiexec), is an aspect of quality of the MPI library but not mandatory. Indeed I had no success in running the following code: if(0 == my_rank) { FILE* parameters = fopen("parameters.txt", "r"); if(NULL == parameters) { fprintf(stderr, "Could not open parameters.txt file.\n"); printf("Could not open parameters.txt file.\n"); exit(EXIT_FAILURE); //Tried MPI_Abort() as well } fscanf(parameters, "%i %f %f %f", N, X_DIMENSION_Dp, Y_DIMENSION_Dp, HEIGHT_DIMENSION_Dp); fclose(generation_conf); } I am not able to get the error code back into the shell in order to make a decision on further actions. Neither of two error messages are printed. I think I might write the error codes and messages to a dedicated file. Has anyone ever had a similar problem and what were the options you've considered to do a reliable error reporting?

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• What are the requirements of a collection type when model binding?

  - by Richard Ev

  I have been reviewing model binding with collections, specifically going through this article http://weblogs.asp.net/nmarun/archive/2010/03/13/asp-net-mvc-2-model-binding-for-a-collection.aspx However, the model I would like to use in my code does not implement collections using generic lists. Instead it uses its own collection classes, which inherit from a custom generic collection base class, the declaration of which is public abstract class CollectionBase<T> : IEnumerable<T> The collections in my POSTed action method are all non-null, but contain no elements. Can anyone advise?

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• Domino 9 / Dojo 1.8 - Date Time Picker without default value

  - by Julian Buss

  I want a Date Time Picker control WITHOUT a default value. Doesn't seem to be possible anymore :-( To reproduce, create a blank XPage and place a Date Time Picker control. Open the XPage in the browser and you will see that it defaults to today. I didn't found any way to set the default to an empty value. I tried setting all properties/data/default to 0, null, empty string and so on - no luck. I tried the data-dojo-probs attribute with value:'', this sets the default to 1970-1-1, but not to blank. Any ideas?

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• Is it possible to creating a Service without starting it?

  - by ThaMe90

  Hello all, I wonder, is it possible to create a Service, set some data, and then start it? I haven't come across a thread specific to this problem, so I would like to know if it is possible (if it is known of course). My problem is that I have a Service which listens to a DatagramSocket, but the socket in question needs to be set after creation, but before the start of the Service. The setting of the socket happens through the use of a Broadcast (I broadcast 2 Strings which hold the IP-Address & Port and the BroadcastReceiver then constructs a socket for me). When the Service is started, a Thread will start to run and listen to the supposedly created socket. This, sadly, doesn't happen. The socket will remain null and I can't set it when the Thread is running (This is another issue I hope to tackle in the future, if anybody got any ideas about this, please notify me). So, is what I want possible, or should I come up with another construct for achieving this goal?

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• java graphics display help

  - by java

  I know that i am not calling the graphics paint command in the mainframe in order to display it. but i'm not sure how. thanks in advance import java.awt.*; import javax.swing.*; public class MainFrame extends JFrame { private static Panel panel = new Panel(); public MainFrame() { panel.setBackground(Color.white); Container c = getContentPane(); c.add(panel); } public void paint(Graphics g) { g.drawString("abc", 20, 20); } public static void main(String[] args) { MainFrame frame = new MainFrame(); frame.setVisible(true); frame.setSize(600, 400); frame.setResizable(false); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } }

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• Why do virtual memory addresses for linux binaries start at 0x8048000?

  - by muteW

  Disassembling an ELF binary on a Ubuntu x86 system I couldn't help but notice that the code(.text) section starts from the virtual address 0x8048000 and all lower memory addresses seem to be unused. This seems to be rather wasteful and all Google turns up is either folklore involving STACK_TOP or protection against null-pointer dereferences. The latter case looks like it can be fixed by using a single page instead of leaving a 128MB gap. So my question is this - is there a definitive answer to why the layout has been fixed to these values or is it just an arbitrary choice?

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• SensorManager method crashes program

  - by Aidan

  Hi guys, When I run the following method my Android application crashes. I can't find the error because I get a "Source Not Found" error. Anyone have any idea's what I'm doing wrong? public void bearing(){ SensorManager sm = (SensorManager)getSystemService(Context.SENSOR_SERVICE); Sensor aSensor = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); Sensor mfSensor = sm.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); sm.registerListener(myAccelerometerListener, aSensor, SensorManager.SENSOR_DELAY_UI); sm.registerListener(myMagneticFieldListener, mfSensor, SensorManager.SENSOR_DELAY_UI); float[] values = new float[3]; float[] R = new float[9]; SensorManager.getRotationMatrix(R, null, accelerometerValues, magneticFieldValues); SensorManager.getOrientation(R, values); //Convert from Radians to degrees values[0] = (float) Math.toDegrees(values[0]); values[1] = (float) Math.toDegrees(values[1]); values[2] = (float) Math.toDegrees(values[2]); }

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• setCursor on container without it changing cursor of sub components

  - by Mike

  JPanel panel = new JPanel(null); panel.setSize(400, 400); panel.add(new JButton("Test")); panel.setCursor(Cursor.getCursor(Cursor.SOMETHING_SOMETHING_CURSOR)); The panel will have a custom cursor, but I don't want the button to have a custom cursor. I don't want to have to set the cursor of every sub component, because in my application I have many and I don't want to litter the code with setCursor statements. Is there a way, like overriding a method on the JPanel or something? A "contains" method somewhere is used to determine if a cursor needs to be set. Could I fool it into thinking the mouse is not in the container if it's really in a sub component? Any other nifty little trick?

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• What to do when using Contract.Assert(true) and the method must return something?

  - by devoured elysium

  I have a bit of code with the following logic: //pseudo-code foreach (element in elementList) { if (element is whatever) return element; } } In theory, there is always one element that is whatever, so this method should pose no problems. In any case, I've put an assertion on the end of the method just to be sure: //pseudo-code foreach (element in elementList) { if (element is whatever) return element; } } Contract.Assert(true, "Invalid state!"); The problem is that as this method has to return something, and the compiler doesn't understand that the assertion will break the program execution. Before using Contracts, in these kind of situations, I used to throw an Exception, which solved the problem. How would you handle this with Contract.Assert()? Returning null or default(element_type) after the Contract.Assert() call knowing it will never be called and shutting up the compiler? Or is there any other more elegant way of doing this? Thanks

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• SkinId and Dynamic Control

  - by Alex

  Hi! I have some control that I add dynamically to my page: public partial class _Default : Page { protected override void CreateChildControls() { base.CreateChildControls(); var testControl = new TestControl { SkinID = "TestSkin" }; Controls.Add(testControl); } } I have the following skin file for this control: <cc:TestControl runat="server" SkinID="TestSkin" TestProperty="LALALA" /> But TestProperty is null (if control is static all works): public class TestControl : LinkButton { public string TestProperty { get; set; } protected override void OnPreRender(EventArgs e) { if (String.IsNullOrEmpty(TestProperty)) { throw new ArgumentNullException("TestProperty"); } } } Any ideas about how to fix it?

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• About NullPointer Exception in Arraylist

  - by user2234456

  List<PrcSubList> listSl = new ArrayList<PrcSubList>(); if (listSl == null || listSl.size() == 0) { PrcSubList subListAdd=coreService.addSubListByAddAlert(childSub); System.out.println("sublist after insert db :" + subListAdd.getName()); listSl.add(subListAdd); System.out.println(listSl.size() +" sublist after insert list:" + listSl.get(0).getName()); } Ouput with first System.out.println("sublist after insert db :" + subListAdd.getName()); sublist after insert db :SYSTEM_ALERT_12312313 Problem But i have NullPointerException with 2nd System.out.println(listSl.size() +" sublist after insert list:" + listSl.get(0).getName()); Can you help me!

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• Query for multiple joins

  - by Shailaja

  i have 3 tables named dataset,dataelem and transformdataelem with column names as below: main.Dataset ------------ datasetID (PK) applicationID main.Dataelem ------------- dataelemID(PK) datasetID(FK) dataelemname biztermID main.Transformdataelem ---------------------- OutputdataelemID InputdataelemID My requirement is: All tables are referenced. Extract all the dataelemId rows from dataelem table where applicationID of dataset table is equal to 1044 and biztermid shud be null. Then whatever resultant dataelemIDs from the above query should be matched with outputdataelemID of Transformdataelem table and we shud get the respective input dataelemId's. Again with these matched inputdataelemID's we shud get the dataelemname's from datelem table.

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• Tsql to find the start and end date(set based)

  - by priyanka.sarkar_2

  I have the below Name Date A 2011-01-01 01:00:00.000 A 2011-02-01 02:00:00.000 A 2011-03-01 03:00:00.000 B 2011-04-01 04:00:00.000 A 2011-05-01 07:00:00.000 The desired output being Name StartDate EndDate ------------------------------------------------------------------- A 2011-01-01 01:00:00.000 2011-04-01 04:00:00.000 B 2011-04-01 04:00:00.000 2011-05-01 07:00:00.000 A 2011-05-01 07:00:00.000 NULL How to achieve the same using TSQL in Set based approach DDL is as under DECLARE @t TABLE(PersonName VARCHAR(32), [Date] DATETIME) INSERT INTO @t VALUES('A', '2011-01-01 01:00:00') INSERT INTO @t VALUES('A', '2011-01-02 02:00:00') INSERT INTO @t VALUES('A', '2011-01-03 03:00:00') INSERT INTO @t VALUES('B', '2011-01-04 04:00:00') INSERT INTO @t VALUES('A', '2011-01-05 07:00:00') Select * from @t

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• "And" condition in C#/LINQ Query

  - by user1213055

  partial void PrintDocLetter1_CanExecute(ref bool result) { if (this.PatientsMasterItem.DoctorsMasterItem != null) { var Doctor = PatientsMasterItem.DoctorsMasterItem; var PatientList = Doctor.PatientsMasterItem; var Letters = PatientsMasterItem.LettersSentItem; if ((PatientList.Count() > 1) && (Letters.Any(i => i.LetterType == "DoctorLetter1"))) { result = false; } else { result = true; } } } I think something is wrong with my second condition. I'm trying to find two things. 1) Doctors with more than 1 patient. 2) Among those patients whether a lettertype called "DoctorLetter1" has been sent or not. The above code is working good for that particular record but not working other patients with same doctors where patient1 has already been sent with DoctorLetter1.

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• VBA: For each cell does not work - Range is change and Out of context

  - by user1744638

  I have problem with for each cell. I have like that : Set cur_sheet = Worksheets("Sheet2") Set Rng = cur_sheet.Range("A1", "C1523") For Each cell In Rng.Cells a=1 next cell if there is row 370 that I have error message " Run time error 94" Invalid use of Null So I do not know what can I change. This row should be ok, filled with text. Why this FOR is not working properly and change range !! ? 370 rows are proceesed correctly, than it is error. Do you have any ideas ?

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• Simple Sinatra Ajax Not Working

  - by proteantech

  I was trying make an AJAX call from a static file on my computer to a simple sinatra service. The ajax call was returning with an error and no details. The server logged no errors either. Another strange symptom was that the Origin in the request header was null. I turns out that you can't make cross domain ajax calls without a little extra effort. You can set the Access-Control-Allow-Origin header on your sinatra response to expose your service to external domains using a snippet like this: get '/hi' do response['Access-Control-Allow-Origin'] = '*' content_type 'text/plain' "Hello World" end There's also another header you can set to allow other HTTP Methods besides gets, Access-Control-Request-Method. You can find more information by searching around for CORS: Cross Origin Resource Sharing and the previously mentioned headers. Oh, and in case you want to do this in Rails as well you can do something like this in your controller: after_filter :set_access_control_headers def set_access_control_headers headers['Access-Control-Allow-Origin'] = '*' headers['Access-Control-Request-Method'] = '*' end

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• What will happen if I change the type of a column from int to year?

  - by MachinationX

  I have a table in MySQL 4.0 which currently has a year field as a smallint(6) type. What will happen if I convert it directly to a Year type with a query like the following: ALTER TABLE t MODIFY y YEAR(4) NOT NULL DEFAULT CURRENT_TIMESTAMP; When the current members of column y have values like 2010? I assume that because the year type is technically values from 1-255, values above that will be truncated or broken. So if MySQL isn't smart enough to realize that 2010(int) = 110(year), what would be the simplest query or queries to convert the values? Thanks for your help!

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• How can i return List of directories instead of url's?

  - by user1741587

  I have this function : private List<string> getLinks(HtmlAgilityPack.HtmlDocument document) { List<string> mainLinks = new List<string>(); var linkNodes = document.DocumentNode.SelectNodes("//a[@href]"); if (linkNodes != null) { foreach (HtmlNode link in linkNodes) { var href = link.Attributes["href"].Value; if (href.StartsWith("http://") == true || href.StartsWith("https://") == true || href.StartsWith("www") == true) // filter for http { mainLinks.Add(href); } } } return mainLinks; } Its getting one url and return list of url's. Instead i want that the function will get a directory for example c:\ And it will return me a List of all directories in c:\ Not subsirectories just the directories in c:\ in my case it should be a List with a 14 directories. Meaning in each index in the List a directory. How can i do it ? Tried with Directory and DirectoryInfo but i just got messed up.

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• convert flv to mp3 with Java

  - by krial

  Hi, I'm pretty new in developing programs in Java. I'm currently writing a program that converts a flv video into mp3. I have already written such a program in Visual Studio.net C#, but the Problem is, that it isn't cross platform compatible... I used the ffmpeg binary to convert the video into mp3, but I can't find ffmpeg binaries for Mac and Linux. (if so, I could start the specific binaries from java, depending on the OS) So I tried to convert the video with Xuggle, but the final mp3 has 0 bytes. My current code is the following: IMediaReader reader = ToolFactory.makeReader("video.flv"); reader.addListener(ToolFactory.makeWriter("music.mp3", reader)); while (reader.readPacket() == null) do {} while(false); Thanks in advance. p.s sorry for my bad english

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• isAlive problem..Help to understand how it works

  - by max

  I get this error: "non-static method isAlive() cannot be referenced from a static context" what's wrong with this code..please. I'd like to detect if the thread is alive... Any help in terms of code will be highly appreciated..thanks max class RecThread extends Thread { public void run() { recFile = new File("recorded_track.wav"); // Output file type AudioFileFormat.Type fileType = null; fileType = AudioFileFormat.Type.WAVE; // if rcOn =1 thread is alive int rcOn; try { // starts recording targetDataLine.open(audioFormat); targetDataLine.start(); AudioSystem.write(new AudioInputStream(targetDataLine), fileType, recFile); if (RecThread.isAlive() == true) { rcOn =1; } else { rcOn =0; } } catch (Exception e) { showException(e); } // update actions recAction.setEnabled(true); stopRecAction.setEnabled(false); } }

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• How decide whether a e-mail was newly sent, replied or forwarded?

  - by user572783

  I use Visual Studio 2010 to create an Outlook 2007 Addin. Now i want to know whether a e-mail was newly sent, replied or forwarded. Is there any property for this? using Outlook = Microsoft.Office.Interop.Outlook; namespace _Outlook2k7_Add_In { public partial class ThisAddIn { private void ThisAddIn_Startup(object sender, System.EventArgs e) { } private void ThisAddIn_Shutdown(object sender, System.EventArgs e) { } void Application_ItemSend(object Item, ref bool Cancel) { Outlook.MailItem mail = Item as Outlook.MailItem; if (mail == null) return; // Magic? } #region VSTO generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InternalStartup() { this.Startup += new System.EventHandler(ThisAddIn_Startup); this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown); this.Application.ItemSend += new Outlook.ApplicationEvents_11_ItemSendEventHandler(Application_ItemSend); } #endregion } }

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• how to return static variable PHP

  - by GOsha

  function build_path($cid) { static $fr=array(); $DB = new MySQLTable; $DB->TblName = 'shop_categories'; $where['cat_id']['='] = $cid; $res = $DB->Select('cat_id,cat_name,cat_parent', $where); if($res !== false) { $pid = mysql_fetch_array($res); if($pid['cat_parent'] !== "0") { $fr[] = $pid['cat_id']; build_path($pid['cat_parent']); } else { $fr[] = $cid; $fr = array_reverse($fr); print_r($fr); return $fr; } } } print_r(build_path(100)); Why is working print_r in function, but second print_r returns NULL?

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• query in query builder in a Table Adapter

  - by Sony

  I am working with the datasets of .net I have an Oracle Query which is working fine . but I copy the query as sql statement within Table Adapter wizard and after I clicked the Query Builder button ,there is SQL syntax error. The query is below: SELECT lead_id, NAME, ADDRESS, CITY, EMAIL, PHONE, PINCODE, STATE, QUALIFICATION, DOB, status FROM (SELECT l.lead_id, l.NAME, l.ADDRESS, l.CITY, l.EMAIL, l.PHONE, l.PINCODE, l.STATE, l.QUALIFICATION, l.DOB, CASE WHEN s.status IS NULL THEN 'Not Updated !' ELSE s.status END status, row_number() over(PARTITION BY l.lead_id ORDER BY t .CREATED_DATE DESC) rn FROM LEADS l JOIN Leads lc ON l.USER_ID = lc.USER_ID AND l.USER_ID = :iuser_id AND(l.CREATED_DATE BETWEEN (TO_DATE(:ifrom_date , 'dd-mm-yyyy') ) AND (TO_DATE (:ito_date, 'dd-mm-yyyy' ) )) LEFT JOIN LEADTRANSACTION t ON l.lead_id = t .lead_id LEFT JOIN STATUS s ON s.STATUS_ID = t .STATUS_ID) WHERE rn = 1;

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• using Eval in vb.net

  - by Bin_Zain

  hiii evryone.... i have small problem with my code in vb.net that i want to use (Eval) in my project so i write this code : <asp:Label ID="Label1" runat="server" Text='<%#Eval("PAG_PAGES") == null ? "" : ((PostAgenciesModel.PAG_PAGES)(Eval("PAG_PAGES"))).PAGE_TITLE_AR %>'></asp:Label> and this code i used in my C# project .... all want to show the (Label1) in insied my GridView.... ("PAG_PAGES") is the name of table.. PostAgenciesModel is the edmx... PAGE_TITLE_AR is the colum in ("PAG_PAGES") that i want to show it can anyone help plzzz thanxx

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