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  • Resize and saving an image to disk in Monotouch

    - by Chris S
    I'm trying to resize an image loaded from disk - a JPG or PNG (I don't know the format when I load it) - and then save it back to disk. I've got the following code which I've tried to port from objective-c, however I've got stuck on the last parts. Original Objective-C. This may not be the best way of achieving what I want to do - any solution is fine for me. int width = 100; int height = 100; using (UIImage image = UIImage.FromFile(filePath)) { CGImage cgimage = image.CGImage; CGImageAlphaInfo alphaInfo = cgimage.AlphaInfo; if (alphaInfo == CGImageAlphaInfo.None) alphaInfo = CGImageAlphaInfo.NoneSkipLast; CGBitmapContext context = new CGBitmapContext(IntPtr.Zero, width, height, cgimage.BitsPerComponent, 4 * width, cgimage.ColorSpace, alphaInfo); context.DrawImage(new RectangleF(0, 0, width, height), cgimage); /* Not sure how to convert this part: CGImageRef ref = CGBitmapContextCreateImage(bitmap); UIImage* result = [UIImage imageWithCGImage:ref]; CGContextRelease(bitmap); // ok if NULL CGImageRelease(ref); */ }

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  • Rails: Single Table Inheritance and models subdirectories

    - by Chris
    I have a card-game application which makes use of Single Table Inheritance. I have a class Card, and a database table cards with column type, and a number of subclasses of Card (including class Foo < Card and class Bar < Card, for the sake of argument). As it happens, Foo is a card from the original printing of the game, which Bar is a card from an expansion. In an attempt to rationalise my models, I have created a directory structure like so: app/ + models/ + card.rb + base_game/ + foo.rb + expansion/ + bar.rb And modified environment.rb to contain: Rails::Initializer.run do |config| config.load_paths += Dir["#{RAILS_ROOT}/app/models/**"] end However, when my reads a card from the database, Rails throws the following exception: ActiveRecord::SubclassNotFound (The single-table inheritance mechanism failed to locate the subclass: 'Foo'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance. Please rename this column if you didn't intend it to be used for storing the inheritance class or overwrite Card.inheritance_column to use another column for that information.) Is it possible to make this work, or am I doomed to a flat directory structure?

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  • Google Maps API v3: Can I setZoom after fitBounds?

    - by chris
    I have a set of points I want to plot on an embedded Google Map (API v3). I'd like the bounds to accommodate all points unless the zoom level is too low (i.e., zoomed out too much). My approach has been like this: var bounds = new google.maps.LatLngBounds(); // extend bounds with each point gmap.fitBounds(bounds); gmap.setZoom( Math.max(6, gmap.getZoom()) ); This doesn't work. The last line "gmap.setZoom()" doesn't change the zoom level of the map if called directly after fitBounds. Is there a way to get the zoom level of a bounds without applying it to the map? Other ideas to solve this?

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  • XML-RPC with PHP and GoDaddy? Confusion sets in.

    - by Chris Cooper
    Hey folks, I am attempting to work with XML-RPC via PHP on a GoDaddy server. This same server is hosting a Wordpress Blog that makes use of XML-RPC and is functioning, though that may be unrelated... Whenever I attempt to use any functions that are integrated into PHP for use with XML-RPC, I get an error (function list here: http://us3.php.net/manual/en/ref.xmlrpc.php) e.g.: Fatal error: Class 'xmlrpc_client' not found Is this because XML-RPC's PHP functions are not enabled on my server? If so, how do I go about enabling those - it would seem I would have to install the XML-RPC library to do so and of course I cannot do that on a shared server. Doesn't Wordpress use the same batch of XML-RPC functions though (it works fine)? I think I have managed to thoroughly confuse myself. I have zero experience with XML-RPC.

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  • Hide cursor in Chrome (and IE)

    - by Chris
    I have the following CSS that hides the mouse cursor for anything on the web page. It works perfectly in FireFox but in IE and and Chrome it doesn't work. html { cursor: none; } In Chrome I always see the mouse pointer. In IE however I see whatever cursor was last 'active' when it entered the screen. Presumably it's keeping the last selection instead of removing it.

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  • IE 11 not listening to MSFullscreenChange

    - by Chris
    IE 11 does not seem to be recognizing MSFullscreenChange. I have this code in the script: document.addEventListener("MSFullscreenChange", function () { if (document.msFullscreenElement != null) { console.info("Went full screen"); } else { console.info("Exited full screen"); } }); In other words, I'm using the exact code shown here on Microsoft's own site, but nothing's being printed out in the console, and I know fullscreen is enabled. I also noticed I'm getting the SEC7118 message: XMLHttpRequest for https://gdata.youtube.com/feeds/api/videos/qywzeXowktA?v=2&alt=json required Cross Origin Resource Sharing (CORS). That wouldn't be affecting it, would it?

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  • How do I create a named temporary file on windows in Python?

    - by Chris B.
    I've got a Python program that needs to create a named temporary file which will be opened and closed a couple times over the course of the program, and should be deleted when the program exits. Unfortunately, none of the options in tempfile seem to work: TemporaryFile doesn't have a visible name NamedTemporaryFile creates a file-like object. I just need a filename. I've tried closing the object it returns (after setting delete = False) but I get stream errors when I try to open the file later. SpooledTemporaryFile doesn't have a visible name mkstemp returns both the open file object and the name; it doesn't guarantee the file is deleted when the program exits mktemp returns the filename, but doesn't guarantee the file is deleted when the program exits I've tried using mktemp1 within a context manager, like so: def get_temp_file(suffix): class TempFile(object): def __init__(self): self.name = tempfile.mktemp(suffix = '.test') def __enter__(self): return self def __exit__(self, ex_type, ex_value, ex_tb): if os.path.exists(self.name): try: os.remove(self.name) except: print sys.exc_info() return TempFile() ... but that gives me a WindowsError(32, 'The process cannot access the file because it is being used by another process'). The filename is used by a process my program spawns, and even though I ensure that process finishes before I exit, it seems to have a race condition out of my control. What's the best way of dealing with this? 1 I don't need to worry about security here; this is part of a testing module, so the most someone nefarious could do is cause our unit tests to spuriously fail. The horror!

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  • Printing PDFs Server-side using Acrobat Reader from ASP.NET

    - by Chris Roberts
    Hi, I have been presented with a problem which requires me to print PDF files from a server as part of an ASP.NET web service. The problem is further complicated by the fact that the PDF files I have to print can ONLY be printed using Adobe Reader (they were created using Adobe LiveCycle and have some strange protection in them). This piece of code seems to do the trick in the Visual Studio development web server, but doesn't do anything when the site's running in IIS. I'm assuming this is probably some sort of permissions issue!? I know this is a FAR from ideal thing to be trying to do, but I haven't really got much choice! Any ideas would be greatly appreciated! Dim starter As ProcessStartInfo Dim Prc As Process ' Pass File Path And Arguments starter = New ProcessStartInfo("c:\program files\...\AcroRd32.exe", "/t ""test.pdf"" ""Printer""") starter.CreateNoWindow = True starter.RedirectStandardOutput = True starter.UseShellExecute = False ' Start Adobe Process Prc = New Process() Prc.StartInfo = starter Prc.Start()

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  • Best way to cache resized images using PHP and MySQL

    - by Chris Hawes
    What would be the best practice way to handle the caching of images using PHP. The filename is currently stored in a MySQL database which is renamed to a GUID on upload, along with the original filename and alt tag. When the image is put into the HTML pages it is done so using a url such as '/images/get/200x200/{guid}.jpg which is rewritten to a php script. This allows my designers to specify (roughly - the source image maybe smaller) the file size. The php script then creates a hash of the size (200x200 in the url) and the GUID filename and if the file has been generated before (file with the name of the hash exists in TMP directory) sends the file from the application TMP directory. If the hashed filename does not exist, then it is created, written to disk and served up in the same manner, Is this efficient as it could be? (It also supports watermarking the images and the watermarking settings are stored in the hash as well, but thats out of scope for this.)

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  • Debugging: Attach to Process for Console App running inside cmd.exe

    - by Chris
    How do you "Attach to Process..." for a console application thats running from a CMD window and not launched by F5? The reason I ask is because the application takes command line arguments and I want to have a genuine experience. I've even attaching to CMD.exe, but no luck, or setting a break-point using Console.ReadKey() with also no luck. I'm kind of at a loss here. Is this possible?

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  • vBulletin Nightmare

    - by Chris
    I am creating a vBulletin forum community called: wehypnosis We purchased the vBulletin version 4.0 CMS and the SEO plugin. Im used to designing and building templates for drupal, wordpress and joomla. All of which have great documentation and many tutorials built by the community. But vBulletin although claimed as the best forum software on the internet, is missing any form of documentation worth reading. The only thing I can find to help me rebuild this monster is www.vbulletin.com/docs/ Does anyone know of a set of tutorials or any documentation which would help me: Configure a good solid working version? Give detailed instruction on how to build themes for vBulletin? Drupal has a mountain of great books and resources. Does vBulletin?

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  • Error in ASP.NET MVC 2 View after Upgrading from ASP.NET 4.0 RC to RTM

    - by Chris
    In my View, I am trying to loop through a list in a LINQ object that as part of my View Model. This worked fine earlier today with the VS2010 RC and the .NET 4.0 RC. <% if (Model.User.RoleList.Count > 0 ) { %> <% foreach (var role in Model.User.RoleList) { %> <%: role.Name %><br /> <% } %> <% } else { %> <em>None</em><br /> <% } %> It used to happily spew out a list of the role names. No data or code has changed. Simply the software upgrades from RC to RTM. The error I am getting is this: \Views\Users\Details.aspx(67): error CS0012: The type 'System.Data.Linq.EntitySet`1' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. But System.Data.Linq IS referenced. I see it there in the references list. I tried deleting it and re-adding it but I get the same error. Any ideas?

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  • Mongodb performance on Windows

    - by Chris
    I've been researching nosql options available for .NET lately and MongoDB is emerging as a clear winner in terms of availability and support, so tonight I decided to give it a go. I downloaded version 1.2.4 (Windows x64 binary) from the mongodb site and ran it with the following options: C:\mongodb\bin>mkdir data C:\mongodb\bin>mongod -dbpath ./data --cpu --quiet I then loaded up the latest mongodb-csharp driver from http://github.com/samus/mongodb-csharp and immediately ran the benchmark program. Having heard about how "amazingly fast" MongoDB is, I was rather shocked at the poor benchmark performance. Starting Tests encode (small).........................................320000 00:00:00.0156250 encode (medium)........................................80000 00:00:00.0625000 encode (large).........................................1818 00:00:02.7500000 decode (small).........................................320000 00:00:00.0156250 decode (medium)........................................160000 00:00:00.0312500 decode (large).........................................2370 00:00:02.1093750 insert (small, no index)...............................2176 00:00:02.2968750 insert (medium, no index)..............................2269 00:00:02.2031250 insert (large, no index)...............................778 00:00:06.4218750 insert (small, indexed)................................2051 00:00:02.4375000 insert (medium, indexed)...............................2133 00:00:02.3437500 insert (large, indexed)................................835 00:00:05.9843750 batch insert (small, no index).........................53333 00:00:00.0937500 batch insert (medium, no index)........................26666 00:00:00.1875000 batch insert (large, no index).........................1114 00:00:04.4843750 find_one (small, no index).............................350 00:00:14.2812500 find_one (medium, no index)............................204 00:00:24.4687500 find_one (large, no index).............................135 00:00:37.0156250 find_one (small, indexed)..............................352 00:00:14.1718750 find_one (medium, indexed).............................184 00:00:27.0937500 find_one (large, indexed)..............................128 00:00:38.9062500 find (small, no index).................................516 00:00:09.6718750 find (medium, no index)................................316 00:00:15.7812500 find (large, no index).................................216 00:00:23.0468750 find (small, indexed)..................................532 00:00:09.3906250 find (medium, indexed).................................346 00:00:14.4375000 find (large, indexed)..................................212 00:00:23.5468750 find range (small, indexed)............................440 00:00:11.3593750 find range (medium, indexed)...........................294 00:00:16.9531250 find range (large, indexed)............................199 00:00:25.0625000 Press any key to continue... For starters, I can get better non-batch insert performance from SQL Server Express. What really struck me, however, was the slow performance of the find_nnnn queries. Why is retrieving data from MongoDB so slow? What am I missing? Edit: This was all on the local machine, no network latency or anything. MongoDB's CPU usage ran at about 75% the entire time the test was running. Edit 2: Also, I ran a trace on the benchmark program and confirmed that 50% of the CPU time spent was waiting for MongoDB to return data, so it's not a performance issue with the C# driver.

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  • ASP.Net Entity Framework Repository & Linq

    - by Chris Klepeis
    My scenario: This is an ASP.NET 4.0 web app programmed via C# I implement a repository pattern. My repositorys all share the same ObjectContext, which is stored in httpContext.Items. Each repository creates a new ObjectSet of type E. Heres some code from my repository: public class Repository<E> : IRepository<E>, IDisposable where E : class { private DataModelContainer _context = ContextHelper<DataModelContainer>.GetCurrentContext(); private IObjectSet<E> _objectSet; private IObjectSet<E> objectSet { get { if (_objectSet == null) { _objectSet = this._context.CreateObjectSet<E>(); } return _objectSet; } } public IQueryable<E> GetQuery() { return objectSet; } Lets say I have 2 repositorys, 1 for states and 1 for countrys and want to create a linq query against both. Note that I use POCO classes with the entity framework. State and Country are 2 of these POCO classes. Repository stateRepo = new Repository<State>(); Repository countryRepo = new Repository<Country>(); IEnumerable<State> states = (from s in _stateRepo.GetQuery() join c in _countryRepo.GetQuery() on s.countryID equals c.countryID select s).ToList(); Debug.WriteLine(states.First().Country.country) essentially, I want to retrieve the state and the related country entity. The query only returns the state data... and I get a null argument exception on the Debug.WriteLine LazyLoading is disabled in my .edmx... thats the way I want it.

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  • Simple C# CSV Excel export class

    - by Chris
    Thought this might be handy for someone, this is an extremely simple CSV export class that I needed. Features: Extremely simple to use Escapes commas and quotes so excel handles them fine Exports date and datetimes in timezone-proof format Without further ado: using System; using System.Data.SqlTypes; using System.IO; using System.Text; using System.Collections.Generic; /// <summary> /// Simple CSV export /// Example: /// CsvExport myExport = new CsvExport(); /// /// myExport.AddRow(); /// myExport["Region"] = "New York, USA"; /// myExport["Sales"] = 100000; /// myExport["Date Opened"] = new DateTime(2003, 12, 31); /// /// myExport.AddRow(); /// myExport["Region"] = "Sydney \"in\" Australia"; /// myExport["Sales"] = 50000; /// myExport["Date Opened"] = new DateTime(2005, 1, 1, 9, 30, 0); /// /// Then you can do any of the following three output options: /// string myCsv = myExport.Export(); /// myExport.ExportToFile("Somefile.csv"); /// byte[] myCsvData = myExport.ExportToBytes(); /// </summary> public class CsvExport { /// <summary> /// To keep the ordered list of column names /// </summary> List<string> fields = new List<string>(); /// <summary> /// The list of rows /// </summary> List<Dictionary<string, object>> rows = new List<Dictionary<string, object>>(); /// <summary> /// The current row /// </summary> Dictionary<string, object> currentRow { get { return rows[rows.Count - 1]; } } /// <summary> /// Set a value on this column /// </summary> public object this[string field] { set { // Keep track of the field names, because the dictionary loses the ordering if (!fields.Contains(field)) fields.Add(field); currentRow[field] = value; } } /// <summary> /// Call this before setting any fields on a row /// </summary> public void AddRow() { rows.Add(new Dictionary<string, object>()); } /// <summary> /// Converts a value to how it should output in a csv file /// If it has a comma, it needs surrounding with double quotes /// Eg Sydney, Australia -> "Sydney, Australia" /// Also if it contains any double quotes ("), then they need to be replaced with quad quotes[sic] ("") /// Eg "Dangerous Dan" McGrew -> """Dangerous Dan"" McGrew" /// </summary> string MakeValueCsvFriendly(object value) { if (value == null) return ""; if (value is INullable && ((INullable)value).IsNull) return ""; if (value is DateTime) { if (((DateTime)value).TimeOfDay.TotalSeconds==0) return ((DateTime)value).ToString("yyyy-MM-dd"); return ((DateTime)value).ToString("yyyy-MM-dd HH:mm:ss"); } string output = value.ToString(); if (output.Contains(",") || output.Contains("\"")) output = '"' + output.Replace("\"", "\"\"") + '"'; return output; } /// <summary> /// Output all rows as a CSV returning a string /// </summary> public string Export() { StringBuilder sb = new StringBuilder(); // The header foreach (string field in fields) sb.Append(field).Append(","); sb.AppendLine(); // The rows foreach (Dictionary<string, object> row in rows) { foreach (string field in fields) sb.Append(MakeValueCsvFriendly(row[field])).Append(","); sb.AppendLine(); } return sb.ToString(); } /// <summary> /// Exports to a file /// </summary> public void ExportToFile(string path) { File.WriteAllText(path, Export()); } /// <summary> /// Exports as raw UTF8 bytes /// </summary> public byte[] ExportToBytes() { return Encoding.UTF8.GetBytes(Export()); } }

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  • Removing and then adding MKAnnotations to a MapView is leaving me with a blank MapView

    - by Chris McCall
    A followup to this quesiton: http://stackoverflow.com/questions/2944581/forcing-reload-of-view-when-returning-from-flipsideview-of-utility-application When returning from the flipside view, I'm calling NSArray *annotations = [NSArray arrayWithArray:[mapView annotations]]; [mapView removeAnnotations:annotations]; To remove all the pins from the map (let me know if this isn't the best way to do this). Then: for(Hole *hole in fetchedObjects) { double latitude = [hole.Latitude doubleValue]; cord.latitude = latitude; double longitude = [hole.Longitude doubleValue]; cord.longitude = longitude; WellPlaceMark *placemark = [[WellPlaceMark alloc] initWithCoordinate:cord withWellType:[NSString stringWithString: hole.WellType]]; [mapView addAnnotation:placemark]; } Plus: - (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation{ MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"currentloc"]; if ([annotation isKindOfClass:[MKUserLocation class]]) return nil; if([annotation isKindOfClass:[WellPlaceMark class]]) { ... } annView.animatesDrop=FALSE; return annView; } All of this code seems to be called in the debugger, but when it's finished, I'm presented with a blank map. I've tried zooming out and the pins are nowhere. The map loads up fine on the first try, but once I call removeAnnotations, they never return.

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  • Android AVD With GoogleApi, Not Getting Network Connection

    - by Chris
    I am working on a Windows XP Machine. When running AVDs out of Eclipse, I am getting "No Network Connection" when I am plugged into my company's network and using an AVD that was built with the "Google APIs by Google Inc., Android API 7, revision 1". If I use this same AVD (Google API) and connect to the internet through a Verizon Wireless card, the AVD gets an Internet Connection. If I use an AVD built with "SDK Platform Android 2.1, API 7, revision 1", and connect through my company's network, the AVD gets an Internet Connection. Any ideas what might be blocking this? I am guessing it is something in my company's network, but why only with the AVD created with the Google API?

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  • Error about 'invalid JSON' with couchDB view but the json's fine...

    - by Chris Huang-Leaver
    I am trying to setup the following view on CouchDB { "_id":"_design/id", "_rev":"1-9be2e55e05ac368da3047841f301203d", "language":"javascript", "views":{ "by_id":{ "map" : "function(doc) { emit(doc.id, doc)}" },"from_user_id":{ "map" : "function(doc) { if (doc.from_user_id) {emit(doc.from_user_id, doc)}}"}, "from_user":{ "map" : "function(doc) { if (doc.from_user) {emit(doc.from_user, doc)}}"}, "to_user_id":{ "map" : "function(doc) {if (doc.to_user_id){ emit(doc.to_user_id, doc)}}"}, "to_user":{ "map" : "function(doc) {if (doc.to_user){ emit(doc.to_user, doc)}}" }, "max_id":{ "map" : "function(doc) { if (doc.id) {emit(doc._id, eval(doc.id))}}", "reduce" :"function(key,value) { a = value[0]; for (i=1; i <value.length; ++i){a = Math.max(a,value[i])} return a}" } } } when I try to 'PUT' this using curl: curl -X PUT -d keys.json $CDB/_design/id {"error":"bad_request","reason":"invalid UTF-8 JSON"} I know it's not invalid JSON, because I tested it using the 'json' library built into Python 2.6, it loads fine. JS screw ups give me the error 'must evaluate to a function' What else might be wrong with it?

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  • SQL query to count and list the different counties per zip code

    - by Chris
    I have a sql server 2005 table called ZipCode, which has all the US ZIPs in it. For each entry, it lists the zip, county, city, state, and several other details. Some zipcodes span multiple cities and some even span multiple counties. As a result, some zipcodes appear many times in the table. I am trying to query the table to see which zipcodes go across multiple counties. This is what I have so far: select zipcode, count(zipcode) as total, county, state from zipcode group by zipcode, county, state order by zipcode Of 19248 records in the result set, here are the first several records returned: zipcode total county state 00501 2 SUFFOLK NY 00544 2 SUFFOLK NY 00801 3 SAINT THOMAS VI 00802 3 SAINT THOMAS VI 00803 3 SAINT THOMAS VI 00804 3 SAINT THOMAS VI 00805 1 SAINT THOMAS VI 00820 2 SAINT CROIX VI 00821 1 SAINT CROIX VI 00822 1 SAINT CROIX VI 00823 2 SAINT CROIX VI 00824 2 SAINT CROIX VI In this particular example, each zip with a total of two or more happens to be in the table more than once, and it's because the "cityaliasname" (not shown) or some other column differs. But I just want to know which zips are in there more than once because the county column differs. I searched before posting this and I found many questions about counting records but I could not figure out how to apply them to my problem. Please forgive me if there is already a question whose answer applies to this question.

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  • Mixing Windows and Forms Authentication in ASP.NET MVC

    - by Chris Meek
    I'm currently trying to set up a website that uses both windows authentication and forms authentication. I am using ASP.NET MVC and both IIS6 and 7 need to be supported. How would I go about letting known AD users into the app (their AD id is stored against their user record in the application database) and directing everyone else to a standard username/password page.

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  • How to use relative URL in jqGrid url parameter in ASP MVC?

    - by Chris Herring
    I've setup a jqGrid like this $('#gridTable').jqGrid({ url: '/GridData/', ... Now if I navigate to a url such as "/Controller/id/" then the grid will send a GET to "/GridData/" instead of "/Controller/id/GridData/". Can I make the GET relative so that I can pick the id up on the server side or do I have to manually pass the id as a parmater using javascript on the client?

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  • Eclipse CDT code analysis thinks size_t is ambiguous

    - by Chris
    It does, after all, get defined in stddef.h AND c++config.h: c++config.h: namespace std { typedef __SIZE_TYPE__ size_t; typedef __PTRDIFF_TYPE__ ptrdiff_t; #ifdef __GXX_EXPERIMENTAL_CXX0X__ typedef decltype(nullptr) nullptr_t; #endif } stddef.h: #define __SIZE_TYPE__ long unsigned int So when a file does using namespace std, the Eclipse CDT code analysis gets confused and says the symbol is ambiguous. I don't know how gcc works around this, but does anybody have any suggestions on what to do for the eclipse code analysis?

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