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  • Javascript callback and google maps api question

    - by es11
    I am using google maps api v3 and have an array of arrays object: MVCArray.<MVCArray.<LatLng>> I want to iterate over this. I see that MVCArray has a method forEach which uses a call back, but I have no idea how to use this (I haven't done much js). The api defines this method as follows: forEach(callback:function(*, number))) Could somebody please show me an example of how to use this given an MVCArray of MVCArrays?

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  • Mix of two bit sequences

    - by Tomek Tarczynski
    Is there any clever way to mix two bit sequences in such way that bits from first sequence will be on odd places, and bits from second sequence will be on even places. Both sequences are no longer than 16b so output will fit into 32bit integer. Example: First sequence : 1 0 0 1 0 0 Second sequence : 1 1 1 0 1 1 Output : 1 1 0 1 0 1 1 0 0 1 0 1 I thought about making integer array of size 2^16 and then the output would be: arr[first] << 1 | arr[second]

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  • Is IE Collection reliable tool for testing with various versions of Internet Explorer?

    - by rsturim
    On my Windows machine -- I typically test different versions of Internet Explorer using an array of Virtual Machine instances (which obviously requires a fair amount of investment in time and money). In a pinch I have also used IETester -- which at times can be a little unreliable. However, I just discovered IE Collection and was wondering if people have used it -- and can I rely on it for web page testing purposes? Would love to know what you think.

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  • Show itemRenderer in specific DataGrid rows... others empty

    - by dude22
    I have a DataGrid populated via an Array. The last column in the DataGrid uses an ItemRenderer (Button). I want to show the Button in certain rows but not in others (leave those empty). I've looked everywhere for an example or even a clue how to do this (tried labelFunction on DG, etc.) but can't find anything about it. Any help would be appreciated. Thanks!

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  • Strange declaration(templates). C++

    - by atch
    Hi, guys could anyone explain to my like to a not very inteligent child what is declared here: (this is taken from another post on this forum) template<typename C> static char (&f(ChT<int Fallback::*, &C::x>*))[1]; how I read it is: template of static function f called with (ChT*) but then I can't make sense why is there address of operator and why is there array? When explaining please picture not very inteligent child and then try to make it clear to it. Thanks for any help

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  • $_SERVER['HTTP_X_REQUESTED_WITH'] seemingly not available on PHP 5.1.6

    - by kenny99
    Hi, I've run into a problem on a server running php 5.1.6 - the code i use to detect ajax requests isn't working as the $_SERVER['HTTP_X_REQUESTED_WITH'] variable is missing from the $_SERVER array. The same code works fine on php 5.2 and in firebug i can see the headers include X-Requested-With XMLHttpRequest. Anyone know any more about this issue and how I can get round it? Thanks in advance.

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  • iPhone: Speeding up a search that's polling 17,000 Core Data objects

    - by randombits
    I have a class that conforms to UISearchDisplayDelegate and contains a UISearchBar. This view is responsible for allowing the user to poll a store of about 17,000 objects that are currently managed by Core Data. Everytime the user types in a character, I created an instance of a SearchOperation (subclasses NSOperation) that queries Core Data to find results that might match the search. The code in the search controller looks something like: - (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope { // Update the filtered array based on the search text and scope in a secondary thread if ([searchText length] < 3) { [filteredList removeAllObjects]; // First clear the filtered array. [self setFilteredList:NULL]; [self.tableView reloadData]; return; } NSDictionary *searchdict = [NSDictionary dictionaryWithObjectsAndKeys:scope, @"scope", searchText, @"searchText", nil]; [aSearchQueue cancelAllOperations]; SearchOperation *searchOp = [[SearchOperation alloc] initWithDelegate:self dataDict:searchdict]; [aSearchQueue addOperation:searchOp]; } And my search is rather straight forward. SearchOperation is a subclass of NSOperation. I overwrote the main method with the following code: - (void)main { if ([self isCancelled]) { return; } NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"MyEntity" inManagedObjectContext:managedObjectContext]; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; [fetchRequest setEntity:entity]; NSPredicate *predicate = NULL; predicate = [NSPredicate predicateWithFormat:@"(someattr contains[cd] %@)", searchText]; [fetchRequest setPredicate:predicate]; NSError *error = NULL; NSArray *fetchResults = [managedObjectContext executeFetchRequest:fetchRequest error:&error]; [fetchRequest release]; if (self.delegate != nil) [self.delegate didFinishSearching:fetchResults]; [pool drain]; } This code works, but it has several issues. It's slow. Even though I have the search happening in a separate thread other than the UI thread, querying 17,000 objects is clearly not optimal. If I'm not careful, crashes can happen. I set the max concurrent searches in my NSOperationQueue to 1 to avoid this. What else can I do to make this search faster? I think preloading all 17,000 objects into memory might be risky. There has to be a smarter way to conduct this search to give results back to the user faster.

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  • Zend_Paginator - Increase querys

    - by poru
    Hello, I started using Zend_Paginator, it works everything fine but I noticed that there is one more query which slows the load time down. The additional query: SELECT COUNT(1) AS `zend_paginator_row_count` FROM `content` The normal query: SELECT `content`.`id`, `content`.`name` FROM `content` LIMIT 2 PHP: $adapter = new Zend_Paginator_Adapter_DbSelect($table->select()->from($table, array('id', 'name'))); $paginator = new Zend_Paginator($adapter); Could I merge the two querys into one (for better performance)?

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  • GCD function in matlab

    - by SalemFayad
    hi, i am looking for a way to implement the "gcd" function used in matlab in another language but i really cant understand the way it functions. it says in http://www.mathworks.com/access/helpdesk/help/techdoc/ref/gcd.html that: "[G,C,D] = gcd(A,B) returns both the greatest common divisor array G, and the arrays C and D, which satisfy the equation: A(i).*C(i) + B(i).*D(i) = G(i)." but it says nothing about how it calculates C and D. i would be grateful if someone has a clearer idea about this subject! thanks:)

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  • sqlite3_prepare_v2 throws SQLITE_ERROR in iPhone code

    - by incognitii
    I have a piece of code that used to work, and other iterations of it that DO work within the same app, and have compared code, and they are identical in structure. This is driving me INSANE!!!!!! In this instance, sqlite3_prepare_v2 is throwing one of those useless SQLITE_ERROR exceptions. Apparently, it can FIND the database, and OPEN the database, but it can't prepare a statement for it. Does ANYONE have any ideas? I'm desperate here. second_maindatabaseName = @"database.db"; NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDir = [documentPaths objectAtIndex:0]; second_maindatabasePath = [documentsDir stringByAppendingPathComponent:second_maindatabaseName]; // Setup the database object sqlite3 *database; // Init the entry requirements Array BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; success = [fileManager fileExistsAtPath:second_maindatabasePath]; if(!success) { NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:second_maindatabaseName]; [fileManager copyItemAtPath:databasePathFromApp toPath:second_maindatabasePath error:nil]; [fileManager release]; } if(sqlite3_open([second_maindatabasePath UTF8String], &database) == SQLITE_OK) { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; value1 = [defaults stringForKey:kConst1]; value2 = [defaults stringForKey:kConst2]; value3 = [defaults stringForKey:kConst3]; value4 = [defaults stringForKey:kConst4]; const char *sqlStatement = "SELECT * FROM myTable WHERE Field1 = ? AND Field2 = ? AND Field3 = ? AND Field4 = ?"; sqlite3_stmt *compiledStatement; int error_code = sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL); if(error_code == SQLITE_OK) { // Loop through the results and add them to the feeds array sqlite3_bind_text(compiledStatement,1,[value1 UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement,2,[value2 UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement,3,[value3 UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement,4,[value4 UTF8String],-1,SQLITE_TRANSIENT); while(sqlite3_step(compiledStatement) == SQLITE_ROW) { // Read the data from the result row NSString *aNewValue = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]; } } sqlite3_finalize(compiledStatement); } sqlite3_close(database);

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  • How to load a binary file(.bin) of size 6 MB in a varbinary(MAX) column of SQL Server 2005 database

    - by Feroz Khan
    How to load a binary file(.bin) of size 6 MB in a varbinary(MAX) column of SQL Server 2005 database using ADO in vc++ application. This is the code I am using to load the file which I used to load a .bmp file BOOL CSaveView::PutECGInDB(CString strFilePath, FieldPtr pFileData) { //Open File CFile fileImage; CFileStatus fileStatus; fileImage.Open(strFilePath,CFile::modeRead); fileImage.GetStatus(fileStatus); //Alocating memory for data ULONG nBytes = (ULONG)fileStatus.m_size; HGLOBAL hGlobal = GlobalAlloc(GPTR,nBytes); LPVOID lpData = GlobalLock(hGlobal); //Putting data into file fileImage.Read(lpData,nBytes); HRESULT hr; _variant_t varChunk; long lngOffset = 0; UCHAR chData; SAFEARRAY FAR *psa = NULL; SAFEARRAYBOUND rgsabound[1]; try { //Create a safe array to store the BYTES rgsabound[0].lLbound = 0; rgsabound[0].cElements = nBytes; psa = SafeArrayCreate(VT_UI1,1,rgsabound); while(lngOffset<(long)nBytes) { chData = ((UCHAR*)lpData)[lngOffset]; hr = SafeArrayPutElement(psa,&lngOffset,&chData); if(hr != S_OK) { return false; } lngOffset++; } lngOffset = 0; //Assign the safe array to a varient varChunk.vt = VT_ARRAY|VT_UI1; varChunk.parray = psa; hr = pFileData-AppendChunk(varChunk); if(hr != S_OK) { return false; } } catch(_com_error &e) { //get info from _com_error _bstr_t bstrSource(e.Source()); _bstr_t bstrDescription(e.Description()); _bstr_t bstrErrorMessage(e.ErrorMessage()); _bstr_t bstrErrorCode(e.Error()); TRACE("Exception thrown for classes generated by #import"); TRACE("\tCode= %08lx\n",(LPCSTR)bstrErrorCode); TRACE("\tCode Meaning = %s\n",(LPCSTR)bstrErrorMessage); TRACE("\tSource = %s\n",(LPCSTR)bstrSource); TRACE("\tDescription = %s\n",(LPCSTR)bstrDescription); } catch(...) { TRACE("Unhandle Exception"); } //Free Memory GlobalUnlock(lpData); return true; } But when I read the same file using Getchunk funcion it gives me all 0,s but the size of the file I get is same as the one uploaded. Your help will be highly appreciated. Thanks in advance.

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  • How to break this string and sort on version number

    - by Sean P
    I have an ASP app that has a string array as such (there are much more than this): 7.5.0.17 Date: 05_03_10 7.5.0.18 Date: 05_03_10 7.5.0.19 Date: 05_04_10 7.5.0.2 Date: 02_19_10 7.5.0.20 Date: 05_06_10 7.5.0.3 Date: 02_26_10 7.5.0.4 Date: 03_02_10 7.5.0.5 Date: 03_08_10 7.5.0.6 Date: 03_12_10 7.5.0.7 Date: 03_19_10 7.5.0.8 Date: 03_25_10 7.5.0.9 Date: 03_26_10 7.5.1.0 Date: 05_06_10 How do I go about sorting these string by version descending?

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  • Get Class List for Element with JQuery

    - by Buggabill
    Is there a way in JQuery to loop through or assign to an array all of the classes that are assigned to an element? ex. <div class="Lorem ipsum dolor_spec sit amet">Hello World!</div> I will be looking for a "special" class as in "dolor_spec" above. I know that I could use hasClass() but the actual class name may not necessarily be known at the time.

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  • plot markers on google maps with json and jquery

    - by mark
    I am trying to plot the markers as defined in a json file om Google Maps but they don't show on the map. Can somebody help me with this problem? This is the Json file: http://sionvalais.com/gmap/markers/ This is the Javascritp function: function loadMarkers() { var bounds = map.getBounds(); var zoomLevel = map.getZoom(); $.post("/gmaps/markers/index.php", {zoom: zoomLevel, swLat: bounds.getSouthWest().lat(), swLon: bounds.getSouthWest().lng(), neLat: bounds.getNorthEast().lat(), neLon: bounds.getNorthEast().lng()}, function(data) { processMarkers(data, _smallMarkerSize); }, "json" ); } function processMarkers(webcams, markerSize) { var marker = null; var markersInView = new Array(); var idsInView = new Array(); // Loop through the new webcams for (var i = 0; i < webcams.length; i++) { var idx = markers.indexOf(webcams[i].id); if (idx == -1) { var info_html = "<table class='infowindow'>"; info_html += "<tr><td class='img'>"; info_html += "<img src='" + webcams[i].smallimg + "' /><td>"; info_html += "<td><p><b>" + webcams[i].loc + "</b>"; info_html += "<br /><a href='/webcam/" + webcams[i].url + "' target='_blank'>Show webcam</a></p></td></tr>"; info_html += "</table>"; marker = new WebcamMarker(new GLatLng(webcams[i].latitude, webcams[i].longitude), {image: "" + webcams[i].smallimg + "", height: markerSize, width: markerSize}); marker.myhtml = info_html; map.addOverlay(marker); markersInView[webcams[i].id] = marker; } else { markersInView[webcams[i].id] = markers[webcams[i].id]; } idsInView.push(webcams[i].id); } // Now remove the markers outside of the viewport for (var i = 0; i < webcamids.length; i++) { var idx = markersInView.indexOf(webcamids[i]); if (idx == -1) { marker = markers[webcamids[i]]; map.removeOverlay(marker); } } markers = markersInView; webcamids = idsInView; }

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  • Jquery Ajax Call In For Loop Only Runs Once - Possible Issue with Timing & Exit Condition?

    - by Grumps
    Background I'm building a form that uses autocomplete against the EchoNest API. First the users picks an artist, using the Artist Suggest call. Next they select a song but the Song and/Or Artist song search doesn't provide a "wild card" search. It only returns exact matches. So based on the forums they suggest building an array of the songs and using auto complete on the array. I can only get a maximum of 100 responses at a time. I do know based on the initial response the number of songs. My Plan: Wrap the ajax call in a for loop ('runonceloop'). Amend the loop exit condition after the first response with the total number of songs. Challenge I'm having: The 'runonceloop' only completes a singe loop because or at least that's what I believe: The exit condition is satisfied before the first response [1] is received. I've tried to adjust the 'exit condition' and 'counter' such that they are set and and increased at the end of the success block. This seems to lock up my browser. Can someone provide some guidance on this situation?[2] I'd really appreciate it. I also don't think turning async off is a good idea because it locks the browser. Response[1]: { "response": { "status": { "code": "0", "message": "Success", "version": "4.2" }, "start": 0, "total": 121, //Used for "songs": [ { "id": "SOXZYYG127F3E1B7A2", "title": "Karma police" }, { "id": "SOXZABD127F3E1B7A2", "title" : "Creep" } ] } } } Code[2] var songsList = []; function getSongs() { var numsongs = 2; //at least 2 runs. var startindex = 0; runonceloop: //<~~~~Referenced in question for (var j = 0;j >= numsongs;) { console.log('numsongs' + numsongs); $.ajax({ url: "http://developer.echonest.com/api/v4/artist/songs", dataType: "jsonp", data: { results: 100, api_key: "XXXXXXXXXXX", format: "jsonp", name: $("#artist").val(), start: startindex }, success: function (data) { var songs = data.response.songs; numsongs = data.response.total; //modify exit condition for (var i = 0; i < songs.length; i++) { songsList.push(songs[i].title); } j +=100;// increase by 100 to match number of responses. } }); }};

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