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  • objective-C : Reset tableview loaded with feltching objects (core data)

    - by the1nz4ne
    hi, i have a tableview application loaded with core data feltching objects and i wanna know if it is possible to reset the table with a simple button. Thanks code to add an object : NSManagedObjectContext *context = [fetchedResultsController managedObjectContext]; NSEntityDescription *entity = [[fetchedResultsController fetchRequest] entity]; NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context]; [newManagedObject setValue:string forKey:@"timeStamp"]; my code to delete (one) object: NSManagedObjectContext *context = [fetchedResultsController managedObjectContext]; [context deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]]; i want a button that reset the tableview and delete everything thanks

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  • SHAddToRecentDocs without a file?

    - by Chris Becke
    I was toying with an IRC client, integrating it with the windows 7 app bar. To get a "Frequent" or "Recent" items list one has to call SHAddToRecentDocs API. I want to add recent IRC channels visited to the Windows 7 Jumplist for the IRC application. Now, my problem is, IRC channels don't exist in the file system. And SHAddToRecentDocs seems to insist on getting some sort of file system object. Ive tried to work around it by creating a IShellItem pointing to my application, and giving it a command line to launch the channel. The shell is rebelling however, and thus far has not visibly added any of my "recent document" attempts to the Jumplist. Is there no way to do this without creating some kind of entirely unwanted filesystem object?

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  • dos batch assign returned values from a command into a variable (from powershell)

    - by nokheat
    i am refering to this question ASSIGN win XP dos commandline output to variable http://stackoverflow.com/questions/537404/assign-win-xp-dos-commandline-output-to-variable i am trying to use it on a powershell code segment so i typed powershell date (get-date).AddDays(-1) -format yyyyMMdd and confirm it returns like 20100601 but then if i tried to for /f "tokens=*" %a in ('powershell date get-date -format yyyyMMdd ') do set var=%a then it failed to work as expected. how can i transfer the date to a variable?

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  • Left outer join null using VB.NET and LINQ

    - by jvcoach23
    I've got what I think is a working left outer join LINQ query, but I'm having problems with the select because of null values in the right hand side of the join. Here is what I have so far Dim Os = From e In oExcel Group Join c In oClassIndexS On c.tClassCode Equals Mid(e.ClassCode, 1, 4) Into right1 = Group _ From c In right1.DefaultIfEmpty I want to return all of e and one column from c called tClassCode. I was wondering what the syntax would be. As you can see, I'm using VB.NET. Update... Here is the query doing join where I get the error: _message = "Object reference not set to an instance of an object." Dim Os = From e In oExcel Group Join c In oClassIndexS On c.tClassCode Equals Mid(e.ClassCode, 1, 4) Into right1 = Group _ From c In right1.DefaultIfEmpty Select e, c.tClassCode If I remove the c.tClassCode from the select, the query runs without error. So I thought perhaps I needed to do a select new, but I don't think I was doing that correctly either.

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  • Problem wth paging ObjectDataSource

    - by funky
    asp page code: <asp:ObjectDataSource runat="server" ID="odsResults" OnSelecting="odsResults_Selecting" /> <tr><td> <wssawc:SPGridViewPager ID="sgvpPagerTop" runat="server" GridViewId="sgvConversionResults" /> </td></tr> <tr> <td colspan="2" class="ms-vb"> <wssawc:SPGridView runat="server" ID="sgvConversionResults" AutoGenerateColumns="false" RowStyle-CssClass="" AlternatingRowStyle-CssClass="ms-alternating" /> </td> </tr> Class code: public partial class Convert : System.Web.UI.Page { ... private DataTable resultDataSource = new DataTable(); ... protected void Page_Init(object sender, EventArgs e) { ... resultDataSource.Columns.Add("Column1"); resultDataSource.Columns.Add("Column2"); resultDataSource.Columns.Add("Column3"); resultDataSource.Columns.Add("Column4"); ... odsResults.TypeName = GetType().AssemblyQualifiedName; odsResults.SelectMethod = "SelectData"; odsResults.SelectCountMethod = "GetRecordCount"; odsResults.EnablePaging = true; sgvConversionResults.DataSourceID = odsResults.ID; ConversionResultsCreateColumns(); sgvConversionResults.AllowPaging = true; ... } protected void btnBTN_Click(object sender, EventArgs e) { // add rows into resultDataSource } public DataTable SelectData(DataTable ds,int startRowIndex,int maximumRows) { DataTable dt = new DataTable(); dt.Columns.Add("Column1"); dt.Columns.Add("Column2"); dt.Columns.Add("Column3"); dt.Columns.Add("Column4"); for (int i =startRowIndex; i<startRowIndex+10 ;i++) { if (i<ds.Rows.Count) { dt.Rows.Add(ds.Rows[i][0].ToString(), ds.Rows[i][1].ToString(), ds.Rows[i][2].ToString(), ds.Rows[i][3].ToString()); } } return dt; } public int GetRecordCount(DataTable ds) { return ds.Rows.Count; } protected void odsResults_Selecting(object sender, ObjectDataSourceSelectingEventArgs e) { e.InputParameters["ds"] = resultDataSource; } } On click BTN button resultDataSource receive some rows. Page reload and we can see result in sgvConversionResults. First 10 rows. But after click next page in pager we have message "There are no items to show in this view". When I try debug I find that after postBack page (on click next page) input params "ds" is blank, ds.Rows.Count = 0 and etc... As though resultDataSource became empty(( What do I do not correctly?. Sorry my English.

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  • Call a function by its name, given from string java

    - by Joao
    Hello, I would like to be able to call a function based on its name provided by a string. Something like public void callByName(String funcName){ this.(funcName)(); } I have searched a bit into lambda funcions but they are not supported. I was thinking about going for Reflection, but I am a bit new to programming, so I am not so familiar with the subject. This whole question was brought up on my java OOP class, when I started GUI (Swing, swt) programming, and events. I found that using object.addActionCommand() is very ugly, because I would later need to make a Switch and catch the exact command I wanted. I would rather do something like object.attachFunction(btn1_click), so that it would call the btn1_click function when the event click was raised. Thank you Joao

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  • How can we retrieve value on main.mxml from other .mxml?

    - by Roshan
    main.mxml [Bindable] private var _dp:ArrayCollection = new ArrayCollection([ {day:"Monday", dailyTill:7792.43}, {day:"Tuesday", dailyTill:8544.875}, {day:"Wednesday", dailyTill:6891.432}, {day:"Thursday", dailyTill:10438.1}, {day:"Friday", dailyTill:8395.222}, {day:"Saturday", dailyTill:5467.00}, {day:"Sunday", dailyTill:10001.5} ]); public var hx:String ; public function init():void { //parameters is passed to it from flashVars //values are either amount or order hx = Application.application.parameters.tab; } ]]> </mx:Script> <mx:LineChart id="myLC" dataProvider="{_dp}" showDataTips="true" dataTipRenderer="com.Amount" > <mx:horizontalAxis> <mx:CategoryAxis categoryField="day" /> </mx:horizontalAxis> <mx:series> <mx:LineSeries xField="day" yField="dailyTill"> </mx:LineSeries> </mx:series> </mx:LineChart> com/Amount.mxml [Bindable] private var _dayText:String; [Bindable] private var _dollarText:String; override public function set data(value:Object):void{ //Alert.show(Application.application.parameters.tab); //we know to expect a HitData object from a chart, so let's cast it as such //so that there aren't any nasty runtime surprises var hd:HitData = value as HitData; //Any HitData object carries a reference to the ChartItem that created it. //This is where we need to know exactly what kind of Chartitem we're dealing with. //Why? Because a pie chart isn't going to have an xValue and a yValue, but things //like bar charts, column charts and, in our case, line charts will. var item:LineSeriesItem = hd.chartItem as LineSeriesItem; //the xValue and yValue are returned as Objects. Let's cast them as strings, so //that we can display them in the Label fields. _dayText = String(item.xValue); var hx : String = String(item.yValue) _dollarText = hx.replace("$"," "); }//end set data ]]> </mx:Script> QUES : Amount.mxml is used as dataTipRenderer for line chart. Now, I need to obtain the value assigned to variable "hx" in main.mxml from "com/Amount.mxml".Any help would be greatly appreciated?

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  • Search over multiple fields

    - by schneck
    Hi there, I think I don't unterstand django-haystack properly: I have a data model containing several fields, and I would to have two of them searched: class UserProfile(models.Model): user = models.ForeignKey(User, unique=True, default=None) twitter_account = models.CharField(max_length=50, blank=False) My search index settings: class UserProfileIndex(SearchIndex): text = CharField(document=True, model_attr='user') twitter_account = CharField(model_attr='twitter_account') def get_queryset(self): """Used when the entire index for model is updated.""" return UserProfile.objects.all() But when I perform a search, only the field "username" is searched; "twitter_account" is ignored. When I select the Searchresults via dbshell, the objects contain the correct values for "user" and "twitter_account", but the result page shows a "no results": {% if query %} <h3>Results</h3> {% for result in page.object_list %} <p> <a href="{{ result.object.get_absolute_url }}">{{ result.object.id }}</a> </p> {% empty %} <p>No results</p> {% endfor %} {% endif %} Any ideas?

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  • JPopupMenu returning a null?

    - by Zenzen
    Ok so I'm working on an Eclipse plugin based on the JGraph example. The problem is I can't really get the "save" method to work, here's how the program works in short: - I have a DiagramEditor class with an init() method, where I create a GraphEditor object and call the createFrame() methord of that object. - GraphEditor extends the BasicGraphEditor (which extends JPanel), the createFrame() method returns a JFrame and has a line "frame.setJMenuBar(menuBar)" - the "menuBar" is an object variable, which is initialized in the BasicGraphEditor. Till here everything is cool, the problem is with the action listener which is supposed to save a file. To get the graph I need to get the GraphEditor component, so I do a Component component = (Component) e.getSource() whitch is the ActionEvent passed to that action listener and at that stage is the JMenuItem "save", then I get the parent which is the JPopupMenu, then I want to get that JPopupMenu's parent which should be the GraphEdiotor, but instead I get a null. Any idea why? Here's some source code: DiagramEditor.java: @Override public void init(IEditorSite site, IEditorInput input) throws PartInitException { setSite(site); setInput(input); this.diagram = ((DiagramEditorInput)input).getDiagram(); setPartName(this.diagram.getName()); gEditor = new GraphEditor(); gEditor.createFrame().setVisible(true); } BasicGraphEditor.java: public JFrame createFrame() { JFrame frame = new JFrame(); frame.getContentPane().add(this); frame.setJMenuBar(menuBar); //frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(870, 640); return frame; } In the constructor: menuBar = new JMenuBar(); menu = new JMenu("File"); menu.setMnemonic(KeyEvent.VK_F); menuBar.add(menu); JMenuItem openMenuItem = new JMenuItem("Open", KeyEvent.VK_O); // ADD FILE OPENING //openMenuItem.addActionListener(menuListener); menu.add(openMenuItem); JMenuItem saveMenuItem = new JMenuItem("Save", new ImageIcon("/images/save.gif")); saveMenuItem.setMnemonic(KeyEvent.VK_S); saveMenuItem.addActionListener( new SaveAction(false) ); menu.add(saveMenuItem); // menu.add(new SaveAction(false)); JMenuItem saveMenuItemAs = new JMenuItem("SaveAs", new ImageIcon("/images/saveas.gif")); //saveMenuItemAs.setMnemonic(KeyEvent.VK_S); saveMenuItemAs.addActionListener( new SaveAction(true) ); menu.add(saveMenuItemAs); //menu.add(new SaveAction(true)); JMenuItem closeMenuItem = new JMenuItem("Close", KeyEvent.VK_C); closeMenuItem.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { System.exit(0); } } ); menu.add(closeMenuItem);

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  • Deserialize jSON Google AJAX Translation API

    - by Chris Porter
    I've got the JSON coming back like this: {"responseData": [{"responseData":{"translatedText":"elefante"},"responseDetails":null,"responseStatus":200},{"responseData":{"translatedText":"Burro"},"responseDetails":null,"responseStatus":200}], "responseDetails": null, "responseStatus": 200} And I need to parse it into a ResponseData object I have set-up: public class ResponseData { public string translatedText = string.Empty; public object responseDetails = null; public HttpStatusCode responseStatus = HttpStatusCode.OK; public List<ResponseData> responseData { get; set; } } I Deserialize it like this: JavaScriptSerializer serializer = new JavaScriptSerializer(); ResponseData translation = serializer.Deserialize<ResponseData>(responseJson); But no matter what the translated text is always empty.

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  • Mvc Redirect with IIS and Request Verification Token

    - by zsharp
    I am using IIS 7 rewrite to redirect certain pages to https. It seems that my post from such a page fails because i have Request Verification token attribute on the controller. Is this expected behavior or do I have something configured incorrectly? what to do to get around this? works fine without the https redirect.

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  • Map only certain parts of the class to a database using SQLAlchemy?

    - by Az
    When mapping an object using SQLAlchemy, is there a way to only map certain elements of a class to a database, or does it have to be a 1:1 mapping? Example: class User(object): def __init__(self, name, username, password, year_of_birth): self.name = name self.username = username self.password = password self.year_of_birth = year_of_birth Say, for whatever reason, I only wish to map the name, username and password to the database and leave out the year_of_birth. Is that possible and will this create problems? Edit - 25/03/2010 Additionally, say I want to map username and year_of_birth to a separate database. Will this database and the one above still be connected (via username)?

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  • Query Results Differ In SQL Mgmt and CFQuery

    - by E-Madd
    executing the following query in SQL management studio provides results, whereas it does not via cfquery... select distinct locationid, locationname, locationaliasname from vwLocationsWithAlias where 1 = 0 or (LocationName = N'the' or LocationAliasName = N'the') or (LocationName = N'the republic' or LocationAliasName = N'the republic') The results expected are returned from SQL Mgmt Studio, but nothing is returned from CFQuery. WTF!?

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  • How to format a function pointer?

    - by Longpoke
    Is there any way to print a pointer to a function in ANSI C? Of course this means you have to cast the function pointer to void pointer, but it appears that's not possible?? #include <stdio.h> int main() { int (*funcptr)() = main; printf("%p\n", (void* )funcptr); printf("%p\n", (void* )main); return 0; } $ gcc -ansi -pedantic -Wall test.c -o test test.c: In function 'main': test.c:6: warning: ISO C forbids conversion of function pointer to object pointer type test.c:7: warning: ISO C forbids conversion of function pointer to object pointer type $ ./test 0x400518 0x400518 It's "working", but non-standard...

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  • Which keycode for escape key with jQuery

    - by Shishant
    I have two functions. When enter is pressed the functions runs correctly but when escape is pressed it doesn't. What's the correct number for the escape key? $(document).keypress(function(e) { if (e.which == 13) { $('.save').click(); } // enter (works as expected) if (e.which == 27) { $('.cancel').click(); } // esc (does not work) });

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  • Serializing chinese characters with Xerces 2.6

    - by Gianluca
    I have a Xerces (2.6) DOMNode object encoded UTF-8. I use to read its TEXT element like this: CBuffer DomNodeExtended::getText( const DOMNode* node ) const { char* p = XMLString::transcode( node->getNodeValue( ) ); CBuffer xNodeText( p ); delete p; return xNodeText; } Where CBuffer is, well, just a buffer object which is lately persisted as it is in a DB. This works until in the TEXT there are just common ASCII characters. If we have i.e. chinese ones they get lost in the transcode operation. I've googled a lot seeking for a solution. It looks like with Xerces 3, the DOMWriter class should solve the problem. With Xerces 2.6 I'm trying the XMLTranscoder, but no success yet. Could anybody help?

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  • Using django-haystack, how do I perform a search with only partial terms?

    - by Sri Raghavan
    I've got a Haystack/xapian search index for django.contrib.auth.models.User. The template is simply {{object.get_full_name}} as I intend for a user to type in a name and be able to search for it. My issue is this: if I search, say, Sri (my full first name) I come up with a result for the user object pertaining to my name. However, if I search Sri Ragh - that is, my full name, and part of my last name, I get no results. How can I set Haystack up so that I can get the appropriate results for partial queries? (I essentially want it to search *Sri Ragh*, but I don't know if wildcards would actually do the trick, or how to implement them). This is my search query: results = SearchQuerySet().filter(content='Sri Ragh')

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  • Can Windows handle inheritance cross the 32-bit/64-bit boundary?

    - by TheBeardyMan
    Is it possible for a child process to inherit a handle from its parent process if one process is 32-bit and the other is 64-bit? HANDLE is a 64 bit type on Win64 and a 32 bit type on Win32, which suggests that even it were supposed to be possible in all cases, there would be some cases where it would fail: a 64-bit parent process, a 32-bit child process, and a handle that can't be represented in 32 bits. Or is naming the object the only way for a 32-bit process and a 64-bit process to get a handle for the same object?

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  • Render only the segment/area of a circle that intersects the main circle

    - by Greenhouse Gases
    I absolutely love maths (or 'math' as most of you would say!) but I haven't done it to a level where I know the answer to this problem. I have a main circle which could have a centre point at any x and y on a display. Other circles will move around the display at will but at any given call to a render method I want to render not only those circles that intersect the main circle, but also only render the segment of that circle that is visible inside the main circle. An analogy would be a shadow cast on a real life object, and I only want to draw the part of that object that is 'illuminated'. I want to do this preferably in Java, but if you have a raw formula that would be appreciated. I wonder how one might draw the shape and fill it in Java, I'm sure there must be some variation on a polyline with arcs or something? Many thanks

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  • Array of structures CLI

    - by Nitroglycerin
    public value struct ListOfWindows { HWND hWindow; int winID; String^ capName; }; thats my structure now i have created an array of them: array<ListOfWindows ^> ^ MyArray = gcnew array<ListOfWindows ^>(5); now to test if that works i made a simple function: void AddStruct( ) { HWND temp = ::FindWindow( NULL, "Test" ); if( temp == NULL ) return; MyArray[0]->hWindow = temp; // debug time error.. return; } ERROR: An unhandled exception of type 'System.NullReferenceException' occurred in Window.exe Additional information: Object reference not set to an instance of an object. dont know what to do.. kinda new to CLI so if you can help please do.. Thanks.

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  • When using delegates, need better way to do sequential processing

    - by Padawan
    I have a class WebServiceCaller that uses NSURLConnection to make asynchronous calls to a web service. The class provides a delegate property and when the web service call is done, it calls a method webServiceDoneWithXXX on the delegate. There are several web service methods that can be called, two of which are say GetSummary and GetList. The classes that use WebServiceCaller initially need both the summary and list so they are written like this: -(void)getAllData { [webServiceCaller getSummary]; } -(void)webServiceDoneWithGetSummary { [webServiceCaller getList]; } -(void)webServiceDoneWithGetList { ... } This works but there are at least two problems: The calls are split across delegate methods so it's hard to see the sequence at a glance but more important it's hard to control or modify the sequence. Sometimes I want to call just GetSummary and not also GetList so I would then have to use an ugly class-level state variable that tells webServiceDoneWithGetSummary whether to call GetList or not. Assume that GetList cannot be done until GetSummary completes and returns some data which is used as input to GetList. Is there a better way to handle this and still get asynchronous calls? Update based on Matt Long's answer: Using notifications instead of a delegate, it looks like I can solve problem #2 by setting a different selector depending on whether I want the full sequence (GetSummary+GetList) or just GetSummary. Both observers would still use the same notification name when calling GetSummary. I would have to write two separate methods to handle GetSummaryDone instead of using a single delegate method (where I would have needed some class-level variable to tell whether to then call GetList). -(void)getAllData { [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getSummaryDoneAndCallGetList:)                  name:kGetSummaryDidFinish object:nil];     [webServiceCaller getSummary]; } -(void)getSummaryDoneAndCallGetList { [NSNotificationCenter removeObserver] //process summary data [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getListDone:)                  name:kGetListDidFinish object:nil];     [webServiceCaller getList]; } -(void)getListDone { [NSNotificationCenter removeObserver] //process list data } -(void)getJustSummaryData { [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getJustSummaryDone:) //different selector but                  name:kGetSummaryDidFinish object:nil]; //same notification name     [webServiceCaller getSummary]; } -(void)getJustSummaryDone { [NSNotificationCenter removeObserver] //process summary data } I haven't actually tried this yet. It seems better than having state variables and if-then statements but you have to write more methods. I still don't see a solution for problem 1.

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  • strange behavior in vim with negative look-behind

    - by João Portela
    So, I am doing this search in vim: /\(\(unum\)\|\(player\)=\)\@<!\"1\" and as expected it does not match lines that have: player="1" but matches lines that have: unum="1" what am i doing wrong? isn't the atom to be negated all of this: \(\(unum\)\|\(player\)=\) naturally just doing: /\(\(unum\)\|\(player\)=\) matches unum= or player=.

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  • Perl, array referencing

    - by Mike
    Consider this Perl code my @a=[[1]]; print $a[0][0] . "\n"; **output** ARRAY(0x229e8) Why does it print an Array instead of 1? I would have expected @a to create an array of size 1 with a reference to a second array containing only one element, 1

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  • Winforms ComboBox does not expand when clicked, any ideas?

    - by peter p
    Hi everybody, A ComboBox within a Form (modal dialog) does not open when clicked, however an item can be selected by using the up/down arrow keys. After clicking on another window and the back on the dialog, the ComboBox works as expected, i.e. expands on click. Weird... any ideas what could be causing this behavior? Thanks a lot in advance, Peter

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