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Articles indexed Saturday June 5 2010

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  • New help with SQL Server select statement

    - by gio_333m
    I need help with select statement in SQL Server / T-SQL My table looks like this: Id (int) QuestionId (int) GenreId (int) I want to select random N rows from this table so that maximum number of same GenreId in the result set is less than X for all GenreId-s except one. For that one GenreId, I need row count with that GenreId to be equal to Y.

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  • how to integrate openCV and ARtoolkit

    - by mehmet
    hi all, I need to use both openCV and ARtoolkit libraries in the same project. I'm trying to get frame by using arVideoGetImage() function in order to process for with openCV functions. however program throws a "System.AccessViolationException" error in the following line of face detection example: CvSeq *faces = cvHaarDetectObjects(img, cascade, storage, 1.1, 3, 0, cvSize( 40, 40 )); ARtoolkit and openCV are work perfectly separately. Anyone has able to work these two library together, or any suggestion?? thanks

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  • extending django usermodel

    - by imran-glt
    Hi i am trying to create a signup form for my django app. for this i have extended the user model. This is my Forms.py from contact.models import register from django import forms from django.contrib import auth class registerForm(forms.ModelForm): class Meta: model=register fields = ('latitude', 'longitude', 'status') class Meta: model = auth.models.User # this gives me the User fields fields = ('username', 'first_name', 'last_name', 'email') and this is my model.py from django.db import models from django.contrib.auth.models import User STATUS_CHOICES = ( ('Online', 'Online.'), ('Busy', 'Busy.'), ('AppearOffline', 'AppearOffline.'),) class register(models.Model): user = models.ForeignKey('auth.User', unique = True) latitude = models.DecimalField(max_digits=8, decimal_places=6) longitude = models.DecimalField(max_digits=8, decimal_places=6) status = models.CharField(max_length=8,choices=STATUS_CHOICES, blank= True, null=True) i dont know where i am making a mistake. the users passwords are not accepted at the login and the latitude and logitude are not saved against the created user user. i am fiarly new to django and dont know what to do any body have any solution .?

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  • iPhone SDK: How to add multiple labels to table cell?

    - by iPhone Developer
    I am trying to create a custom table cell that conveys these data fields. a.) Name b.) Address1 c.) Address2 d.) Phone In the table cell these fields should appear centered one after another. Another requirement is that each of those fields be a different font and color. For that reason, I was thinking of creating labels and attaching them to the cell but I haven't had much luck getting this working. My question is, can this be done? If so, what is the general approach to follow? Any pointers or links to examples greatly appreciated.

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  • gmaps Address Component Types get country name

    - by gmapsuser
    hi .. iam trying to get the country name using the Address Component Types available from gmaps V3. i dont know how i can get it the right way.. http://code.google.com/apis/maps/documentation/javascript/services.html#GeocodingAddressTypes iam trying to alert the country name liks here : alert(results[1].address_component[country]); and here`s the code.. any help is really appreciated..thanks function codeLatLng() { var input = document.getElementById("latlng").value; var latlngStr = input.split(",",2); var lat = parseFloat(latlngStr[0]); var lng = parseFloat(latlngStr[1]); var latlng = new google.maps.LatLng(lat, lng); if (geocoder) { geocoder.geocode({'latLng': latlng}, function(results, status) { if (status == google.maps.GeocoderStatus.OK) { if (results[1]) { alert(results[1].address_component[country]); } else { alert("No results found"); } } else { alert("Geocoder failed due to: " + status); } }); } }

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  • Accessing controls created dynamically (c#)

    - by Aliens
    In my code behind (c#) I dynamically created some RadioButtonLists with more RadioButtons in each of them. I put all controls to a specific Panel. What I need to know is how to access those controls later as they are not created in .aspx file (with drag and drop from toolbox)? I tried this: foreach (Control child in panel.Controls) { Response.Write("test1"); if (child.GetType().ToString().Equals("System.Web.UI.WebControls.RadioButtonList")) { RadioButtonList r = (RadioButtonList)child; Response.Write("test2"); } } "test1" and "test2" dont show up in my page. That means something is wrong with this logic. Any suggestions what could I do?

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  • AIO network sockets and zero-copy under Linux

    - by remyhorton
    I have been experimenting with async Linux network sockets (aio_read et al in aio.h/librt), and one thing i have been trying to find out is whether these are zero-copy or not. Pretty much all i have read so far discusses file I/O, whereas its network I/O i am interested in. AIO is a bit of a pain to use and i suspect is non-portable, so wondering whether its worth persevering with it. Zero-copy is just about the only advantage (albiet a major one for my purposes) it would have over (non-blocking) select/epoll..

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  • Built in background-scheduling system in .NET?

    - by Lasse V. Karlsen
    I ask though I doubt there is any such system. Basically I need to schedule tasks to execute at some point in the future (usually no more than a few seconds or possibly minutes from now), and have some way of cancelling that request unless too late. Ie. code that would look like this: var x = Scheduler.Schedule(() => SomethingSomething(), TimeSpan.FromSeconds(5)); ... x.Dispose(); // cancels the request Is there any such system in .NET? Is there anything in TPL that can help me? I need to run such future-actions from various instances in a system here, and would rather avoid each such class instance to have its own thread and deal with this. Also note that I don't want this (or similar, for instance through Tasks): new Thread(new ThreadStart(() => { Thread.Sleep(5000); SomethingSomething(); })).Start(); There will potentially be a few such tasks to execute, they don't need to be executed in any particular order, except for close to their deadline, and it isn't vital that they have anything like a realtime performance concept. I just want to avoid spinning up a separate thread for each such action.

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  • Nhibernate, mapping as (n)varchar max ?

    - by Quandary
    Question: In nHiberne, I map a string like this: [NHibernate.Mapping.Attributes.Property(Name = "MLST_Description", Type = "String", Length = 400)] which maps string to nvarchar(400) This one [NHibernate.Mapping.Attributes.Property(Name = "MLST_Description", Type = "String")] maps to nvarchar(255) But how can I map to nvarchar(max) ?

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  • Using htaccess rewrite to make a subdirectory be its own root for root relative path requests

    - by Scott
    Can I use htaccess to capture requests from a certain subdirectory and make that directory use itself as the root directory for any root relative path requests? For example if I have... http://www.example.com/subFIXED/subANY/restofpath ...where subFIXED is always the same directory, subANY is any immediate subdirectory of subFIXED, and I want a redirection of all href/src requests from any file under subANY to use subANY as the 'root' (sort of like a subdomain), in effect having root level requests use this as the root directory level: http://www.example.com/subFIXED/subANY/ Instead of this: http://www.example.com/ I'm assuming I can put an htaccess file in subFIXED to handle all calls coming from anything under any subANY, but not being very familiar with htaccess rewriting, variables, etc., I can't figure out how to capture which subANY directory is making the root level request and then use that capture to make a rewrite to consider that directory the root level of any root relative path requests from it. Thanks for your help

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  • OS X Login Authentication Against Leopard Server

    - by mattdwen
    I am doing a few tests with OS X Server before I have to do a deploy in a few months. I have configured Open Directory, and created a few users. I've configured Directory Utility on a 10.5 client, but the login authentication doesn't work the way I would expect. I would expect I could user a username/password from any user created in Open Directory and be able to log into the client. Instead, it appears I need to create a local user, which you then sync with a directory user using Directory Utility. Alternatively, if I add an Active Directory config to the client, I can use any AD user, as I would expect. Am I hoping for the impossible, or is something likely wrong with the configuration?

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  • Running two graphics cards (non-SLI) to power 3D on two different monitors?

    - by Delameko
    Hi, I'm a bit clueless about this, so excuse my naivety. I have two video cards, a Nvidia 8800 and a GT120, powering three monitors. I run two 3D game instances (two Everquest 2 clients), one on each of my first two monitors. It's been running fine, although sometimes it sounds like the computer is trying to take off. Today I realised that I was actually playing them on the two monitors that are both powered by the 8800. Thinking that I might as well make use of the power of both cards I tried switching the monitor cables over so that each card would be "powering" one of the clients. (Is it silly to assume this is how it works?) This doesn't seem to have had the desired effect, as the client running on the 8800 screen is running worse than it was before. Is it even possible to run two clients on separate GPUs? Is SLI the only way to utilise 2 GPUs? Is there something special I have to do? Or do I have to set the client to use a particular GPU (an option I can't seem to find in EQ2)? I run the clients in window mode if that makes any difference, and I'm running Win 7. Thanks.

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  • Getting F# on Ubuntu 10.04

    - by Bo Tian
    I followed this to get F# on my Ubuntu machine. However, it returned me an error, saying -- Resigning FSharp.Core.dll with mono.snk ./install-mono.sh: 24: sn: not found -- Installing FSharp DLLS into the GAC Failure adding assembly bin/FSharp.Core.dll to the cache: Strong name cannot be verified for delay-signed assembly

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  • Calling a method from within a django model save() override

    - by Jonathan
    I'm overriding a django model save() method. Within the override I'm calling another method of the same class and instance which calculates one of the instance's fields based on other fields of the same instance. class MyClass(models.Model): field1 = models.FloatField() field2 = models.FloatField() field3 = models.FloatField() def calculateField1(self) self.field1 = self.field2 + self.field3 def save(self, *args, **kwargs): self.calculateField1() super(MyClass, self).save(*args, **kwargs) The override method is called when I change the model in admin. Alas I've discovered that within calculateField1() field2 and field3 have the values of the instance from before I edited them in admin. If I enter the instance again in admin and save again, only then field1 receives the correct value as field2 and field3 are already updated. Is this the correct behavior on django's side? If yes, then how can I use the new values within calculateField1? I cannot implement the calculation within the save() as calculateField1() actually quite long and I need it to be called from elsewhere.

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  • Saving NSString to file

    - by Michael Amici
    I am having trouble saving simple website data to file. I believe the sintax is correct, could someone help me? When I run it, it shows that it gets the data, but when i quit and open up the file that it is supposed to save to, nothing is in it. - (BOOL)textFieldShouldReturn:(UITextField *)nextField { [timer invalidate]; startButton.hidden = NO; startButton.enabled = YES; stopButton.enabled = NO; stopButton.hidden = YES; stopLabel.hidden = YES; label.hidden = NO; label.text = @"Press to Activate"; [nextField resignFirstResponder]; NSString *urlString = textField.text; NSData *dataNew = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]]; NSUInteger len = [dataNew length]; NSString *stringCompare = [NSString stringWithFormat:@"%i", len]; NSLog(@"%@", stringCompare); NSString *filePath = [[NSBundle mainBundle] pathForResource:@"websiteone" ofType:@"txt"]; if (filePath) { [stringCompare writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:NULL]; NSString *myText = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:NULL]; NSLog(@"Saving... %@", myText); } else { NSLog(@"cant find the file"); } return YES; }

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  • NetBeanse J2ME DataBinding

    - by Wasim
    Hi all , I build an application based on the new Netbeanse data binding feature . I have a problem using this fature on Motorola IDEN mobile (i680) , I get a java exception while trying to install the application on the mobile . What can be the problem . Thanks in advance ...

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  • Seam log4j credential logs

    - by Marc
    In Seam, using log4, I would like to have my info, warn and error always logging the logged in user (if so) name to be logged with whatever the log message is. Being a consistant thing I do not want to have to grab the logged-in user name, and prefix the message. so I attempted to populate the log4j NDC to have it as a field of the log message. Pushing the user name on successful login: NDC.push(credentials.getUsername()); Which works, but the NDC is managed per thread, so once another thread processes a request from the same logged in user, the trace of this user name is lost. I was thinking that there should be a common pattern to accomplish this simple task which is attaching each log message to the logged user, using the NDC or not, to know exactly what user triggered what action. Anyone knows the appropriate way to accomplish this?

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  • Creating settings like the Mail settings in the Settings app

    - by cannyboy
    I want to create some settings much like the Mail settings within the Settings app. These allow you to add mail accounts to the end of the table First screen --------------- + | add account | --------------- When they click on the cell, they are pushed onto a new screen where they fill in a few textfields Second screen ----------------- |(cancel) (save)| - the toolbar ----------------- ---------------- | email | ---------------- |another field | ---------------- Then when they go back, they can see the new record as well as the 'add account' cell. First screen --------------- | email 1 | --------------- + | add account | --------------- It need to be in-app rather than within the Settings app. What's the best way to do this?

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  • Regex in Flex 3: How to Wrap Quotations Around a Dynamic String?

    - by Laxmidi
    Hi, I need some Regex help. I need to find beacon_ followed by an alphanumeric code and then wrap it in quotation marks. For something static, like the example, below it's straight forward. myReturn = myReturn.replace( 'id=beacon_80291ee9b3', 'id="beacon_80291ee9b3"'); But, my problem is that the part after beacon is a random alphanumeric code. (However, it is always the same length). For example, the beacon part could be: beacon_c8ac873136 beacon_dc83b5953e beacon_7a910d03d8 etc. The haystack that I'll search will look like: myReturn = "blah blah id=beacon_80291ee9b3 blah blah"; Thanks. -Laxmidi

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