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• Why is my implementation of the Sieve of Atkin overlooking numbers close to the specified limit?

  - by Ross G

  My implementation either overlooks primes near the limit or composites near the limit. while some limits work and others don't. I'm am completely confused as to what is wrong. def AtkinSieve (limit): results = [2,3,5] sieve = [False]*limit factor = int(math.sqrt(lim)) for i in range(1,factor): for j in range(1, factor): n = 4*i**2+j**2 if (n <= lim) and (n % 12 == 1 or n % 12 == 5): sieve[n] = not sieve[n] n = 3*i**2+j**2 if (n <= lim) and (n % 12 == 7): sieve[n] = not sieve[n] if i>j: n = 3*i**2-j**2 if (n <= lim) and (n % 12 == 11): sieve[n] = not sieve[n] for index in range(5,factor): if sieve[index]: for jndex in range(index**2, limit, index**2): sieve[jndex] = False for index in range(7,limit): if sieve[index]: results.append(index) return results For example, when I generate a primes to the limit of 1000, the Atkin sieve misses the prime 997, but includes the composite 965. But if I generate up the limit of 5000, the list it returns is completely correct.

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• Unable to load WSDL file error in flex while making a call to a web service.

  - by Angeline Aarthi

  I am trying to call a webservice from my Flex application and this is the code: <mx:WebService id="myWebService" wsdl="http://172.16.111.103:22222/cics/services/PRESENT1?wsdl"> <mx:operation name="PRESENT1Operation" result="resultHandler(event)" fault="faultHandler(event)"> </mx:operation> </mx:WebService> //Function to send customer id to the wsdl request private function searchDetails():void{ myWebService.PRESENT1Operation.send(cusNo.text); cusDetails.visible=true; } The webservice is up and running. I have a separate Java application to test the webservice, And I am able to execute it properly. I am able to request the webservice and get response. But If I try to call the webservice through the Flex application, I get the following error. [RPC Fault faultString="HTTP request error" faultCode="Server.Error.Request" faultDetail="Unable to load WSDL. If currently online, please verify the URI and/or format of the WSDL (http://172.16.111.103:22222/cics/services/PRESENT1?WSDL)"] at mx.rpc.wsdl::WSDLLoader/faultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\wsdl\WSDLLoader.as:98] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:170] at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:225] at mx.rpc::Responder/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\Responder.as:53] at mx.rpc::AsyncRequest/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:103] at DirectHTTPMessageResponder/errorHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\channels\DirectHTTPChannel.as:362] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at flash.net::URLLoader/redirectEvent() Please some one help me with this.

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• SQL Compact error: Unable to load DLL 'sqlceme35.dll'. The specified module could not be found

  - by Ciaran Bruen

  Hi - I'm developing a Winforms application using Visual Studio 2008 C# that uses a SQL compact 3.5 database on the client. The client will most likely be 32 bit XP or Vista machines. I'm using a standard Windows Installer project that creates an msi file and setup.exe to install the app on a client machine. I'm new to SQL compact so I haven't had to distribute a client database like this before now. When I run the setup.exe (on new Windows XP 32 bit with SP2 and IE 7) it installs fine but when I run the app I get the error below: Unable to load DLL 'sqlceme35.dll'. The specified module could not be found I spent a few hours searching this error already but all I can find are issues relating to installing on 64 bit Windows, none relating to normal 32 bit that I'm using. The install app copies the all the dependant files that it found into the specified install directory, including the System.Data.SqlServerCe.dll file (assembly version 3.5.1.0). The database file is in a directory called 'data' off the application directory, and the connection string for it is <add name="Tickets.ieOutlet.Properties.Settings.TicketsLocalConnectionString" connectionString="Data Source=|DataDirectory|\data\TicketsLocal.sdf" providerName="Microsoft.SqlServerCe.Client.3.5" /> Some questions I have: should the app be able to find the dll if it's in the same directory i.e. local to the app, or do I need to install it in the GAC? (If so cam I use the Windows Installer to install a dll in the GAC?) is there anything else I need to distribute with the app in order to use a Sql Compact database? there are other dlls also such as MS interop for exporting data to Excel on the client. Do these need to be installed in the GAC or will locating them in the application directory suffice? TIA, Ciaran.

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• JAX-WS and JPA, how to load stub objects using JPA?

  - by opensas

  I'm trying to develope a soap web service that has to access a mysql db. I have to replicate an existing service, so I created all the stub object from it's wsdl file Netbeans created all the necessary stuff for me (new, web service from wsdl), it works ok... Now I'm trying to use JPA to load all those objects from the database. So far I was going fine, I created the classes using (new, entity class from database), and then copied all the annotations to the classes generated by wsimport, and it was working fine. The problem is that netbeans insists on running wsimport again, and then I loose all my annotations... Is there some way to tell netbeans not to regenerate those files? I think this situation shoulb be pretty common, I mean developing a web service from a wsdl and then having to fill those objects with data using JPA. what would be the correct aproach to this kind of situation? thanks a lot saludos sas I've also tried inheriting from the stubs, and addign there the persistence annotations, but I had troubles with overlaping members, I'm redeclaring protected properties...

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• How to Load Bing Map using Coordinates from Database?

  - by Lukasz

  I have latitude and longitude saved inside a database. I have the bing map loading and I can set the VELatLong using regular values but can't seem to be able to load them from the database. Whatever I try the map just doesn't show at all. <script type="text/javascript"> var map = null; var selStyle = VEMapStyle.Road; var selMode = VEMapMode.Mode2D; var zoom = 14; var latLon = new VELatLong(40.67959657544238, -73.94073486328126); // NYC, NY var locationPin = null; function GetMap() { map = new VEMap("myMap"); map.onLoadMap = InitialPin; map.SetCredentials("--KEY HERE--"); map.LoadMap(latLon, zoom, selStyle, false, selMode, false); map.AttachEvent("onclick", OnClick_PinHandler); } window.onload = GetMap; window.onunload = DisposeMap; </script> Thanks for your help!

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• Can I include a NSUserDefault password test in AppDelegate to load a loginView?

  - by Michael Robinson

  I have a name and password in NSUserDefaults for login. I want to place a test in my AppDelegate.m class to test for presence and load a login/signup loginView.xib modally if there is no password or name stored in the app. Here is the pulling of the defaults: -(void)refreshFields { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; usernameLabel.text = [defaults objectForKey:kUsernameKey]; passwordLabel.text = [defaults objectForKey:kPasswordKey]; Here is the tabcontroller loading part: - (void)applicationDidFinishLaunching:(UIApplication *)application { firstTab = [[FirstTab alloc] initWithStyle:UITableViewStylePlain]; UINavigationController *firstNavigationController = [[UINavigationController alloc] initWithRootViewController:firstTab]; [firstTab release]; secondTab = // EDITED FOR SPACE thirdTab = // EDITED FOR SPACE tabBarController = [[UITabBarController alloc] init]; tabBarController.viewControllers = [NSArray arrayWithObjects:firstNavigationController, secondNavigationController, thirdNavigationController, nil]; [window addSubview:tabBarController.view]; [firstNavigationController release]; [secondNavigationController release]; [thirdNavigationController release]; [self logout]; [window makeKeyAndVisible]; Here is where the loginView.xib loads automatically: - (void)logout { loginViewController = [[LoginViewController alloc] initWithNibName:@"LoginView" bundle:nil]; UINavigationController *loginNavigationController = [[UINavigationController alloc] initWithRootViewController:loginViewController]; [loginViewController release]; [tabBarController presentModalViewController:loginNavigationController animated:YES]; [loginNavigationController release]; } I want to replace the above autoload with a test similar to below (that works) using IF-ELSE - (void)logout { if ([usernameLabel.text length] == 0 || [passwordLabel.text length] == 0) { loginViewController = [[LoginViewController alloc] initWithNibName:@"LoginView" bundle:nil]; UINavigationController *loginNavigationController = [[UINavigationController alloc] initWithRootViewController:loginViewController]; [loginViewController release]; [tabBarController presentModalViewController:loginNavigationController animated:YES]; [loginNavigationController release]; }else { [window addSubview:tabBarController.view];} Thanks in advance, I'm totally lost on this.

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• How to use URLClassLoader to load a *.class file?

  - by DeletedAccount

  I'm playing around with Reflection and I thought I'd make something which loads a class and prints the names of all fields in the class. I've made a small hello world type of class to have something to inspect: kent@rat:~/eclipsews/SmallExample/bin$ ls IndependentClass.class kent@rat:~/eclipsews/SmallExample/bin$ java IndependentClass Hello! Goodbye! kent@rat:~/eclipsews/SmallExample/bin$ pwd /home/kent/eclipsews/SmallExample/bin kent@rat:~/eclipsews/SmallExample/bin$ Based on the above I draw two conclusions: It exists at /home/kent/eclipsews/SmallExample/bin/IndependentClass.class It works! (So it must be a proper .class-file which can be loaded by a class loader) Then the code which is to use Reflection: (Line which causes an exception is marked) import java.lang.reflect.Field; import java.net.MalformedURLException; import java.net.URL; import java.net.URLClassLoader; public class InspectClass { @SuppressWarnings("unchecked") public static void main(String[] args) throws ClassNotFoundException, MalformedURLException { URL classUrl; classUrl = new URL("file:///home/kent/eclipsews/SmallExample/bin/IndependentClass.class"); URL[] classUrls = { classUrl }; URLClassLoader ucl = new URLClassLoader(classUrls); Class c = ucl.loadClass("IndependentClass"); // LINE 14 for(Field f: c.getDeclaredFields()) { System.out.println("Field name" + f.getName()); } } } But when I run it I get: Exception in thread "main" java.lang.ClassNotFoundException: IndependentClass at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at InspectClass.main(InspectClass.java:14) My questions: What am I doing wrong above? How do I fix it? Is there a way to load several class files and iterate over them?

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• What is the best way to save a list of objects to an XML file and load that list back using C#?

  - by Siracuse

  I have a list of "Gesture" classes in my application: List<Gesture> gestures = new List<Gesture>(); These gesture classes are pretty simple: public class Gesture { public String Name { get; set; } public List<Point> Points { get; set; } public List<Point> TransformedPoints { get; set; } public Gesture(List<Point> Points, String Name) { this.Points = new List<Point>(Points); this.Name = Name; } } I would like to allow the user to both save the current state of "gestures" to a file and also be able to load a file that contains the data of the gestures. What is the standard way to do this in C#? Should I use Serialization? Should I write a class to handle writing/reading this XML file by hand myself? Are there any other ways?

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• can load data(google app enngine) from http://localhost:8100/remote_api ..

  - by zjm1126

  i can download data from gae (http://zjm1126.appspot.com/remote_api), this is code: appcfg.py download_data --application=zjm1126 --url=http://zjm1126.appspot.com/remote_api --filename=a.csv and it successful : D:\zjm_demo\app>appcfg.py download_data --application=zjm1126 --url=http://zjm1 126.appspot.com/remote_api --filename=a.csv Downloading data records. [INFO ] Logging to bulkloader-log-20100618.162421 [INFO ] Throttling transfers: [INFO ] Bandwidth: 250000 bytes/second [INFO ] HTTP connections: 8/second [INFO ] Entities inserted/fetched/modified: 20/second [INFO ] Batch Size: 10 [INFO ] Opening database: bulkloader-progress-20100618.162421.sql3 [INFO ] Opening database: bulkloader-results-20100618.162421.sql3 [INFO ] Connecting to zjm1126.appspot.com/remote_api Please enter login credentials for zjm1126.appspot.com Email: [email protected] Password for [email protected]: [INFO ] Downloading kinds: [u'LogText', u'Greeting', u'Forum', u'Thread'] .... [INFO ] Have 0 entities, 0 previously transferred [INFO ] 0 entities (8804 bytes) transferred in 11.3 seconds so i want to know can load data from 127.0.0.1 , this is my code : appcfg.py download_data --application=zjm1126 --url=http://localhost:8100/remote_api --filename=a.csv and the error is : D:\zjm_demo\app>appcfg.py download_data --application=zjm1126 --url=http://loca lhost:8100/remote_api --filename=a.csv Downloading data records. [INFO ] Logging to bulkloader-log-20100618.162325 [INFO ] Throttling transfers: [INFO ] Bandwidth: 250000 bytes/second [INFO ] HTTP connections: 8/second [INFO ] Entities inserted/fetched/modified: 20/second [INFO ] Batch Size: 10 [INFO ] Opening database: bulkloader-progress-20100618.162325.sql3 [INFO ] Opening database: bulkloader-results-20100618.162325.sql3 Please enter login credentials for localhost Email: [email protected] Password for [email protected]: [INFO ] Connecting to localhost:8100/remote_api [ERROR ] Exception during authentication Traceback (most recent call last): File "d:\Program Files\Google\google_appengine\google\appengine\tools\bulkload er.py", line 3169, in Run self.request_manager.Authenticate() File "d:\Program Files\Google\google_appengine\google\appengine\tools\bulkload er.py", line 1178, in Authenticate remote_api_stub.MaybeInvokeAuthentication() File "d:\Program Files\Google\google_appengine\google\appengine\ext\remote_api \remote_api_stub.py", line 542, in MaybeInvokeAuthentication datastore_stub._server.Send(datastore_stub._path, payload=None) File "d:\Program Files\Google\google_appengine\google\appengine\tools\appengin e_rpc.py", line 346, in Send f = self.opener.open(req) File "D:\Python25\lib\urllib2.py", line 387, in open response = meth(req, response) File "D:\Python25\lib\urllib2.py", line 498, in http_response 'http', request, response, code, msg, hdrs) File "D:\Python25\lib\urllib2.py", line 425, in error return self._call_chain(*args) File "D:\Python25\lib\urllib2.py", line 360, in _call_chain result = func(*args) File "D:\Python25\lib\urllib2.py", line 506, in http_error_default raise HTTPError(req.get_full_url(), code, msg, hdrs, fp) HTTPError: HTTP Error 404: Not Found [INFO ] Authentication Failed so what should i do , thanks

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• Not possible to load DropDownList on FormView from code behind??

  - by tbone

  I have a UserControl, containing a FormView, containing a DropDownList. The FormView is bound to a data control. Like so: <asp:FormView ID="frmEdit" DataKeyNames="MetricCode" runat="server" DefaultMode="Edit" DataSourceID="llbDataSource" Cellpadding="0" > <EditItemTemplate> <asp:DropDownList ID="ParentMetricCode" runat="server" SelectedValue='<%# Bind("ParentMetricCode") %>' /> etc, etc I am trying to populate the DropDownList from the codebehind. If this was not contained in a FormView, I would normally just do it in the Page_Load event. However, that does not work within a FormView, as as soon as I try to do it, accessing the dropdownlist in code, ie: theListcontrol = CType(formView.FindControl(listControlName), System.Web.UI.WebControls.ListControl) ...the data binding mechansim of the FormView is invoked, which, of course, tries to bind the DropDownList to the underlying datasource, causing a *'ParentMetricCode' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value * error, since the DropDownList has not yet been populated. I tried performing the load in the DataBinding() event of the FormView, but then: theListcontrol = CType(formView.FindControl(listControlName), System.Web.UI.WebControls.ListControl) ...fails, as the FormView.Controls.Count = 0 at that point. Is this impossible? (I do not want to have to use a secondary ObjectDataSource to bind the dropdownlist to)

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• How do I get multimonth plugin of the jQuery datePicker to load with certain dates already selected?

  - by imHavoc

  well im using this script right here: http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/ and I have a multiMonth plugin and multiple select enabled. I want to be able to on load have certain dates already selected and those dates come from a database I found two possible clues to help me out, but since I have not strictly learned JS yet, I can not made heads or tails. http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/renderCalendarBankHolidays.html http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerDefaultToday.html here's the code right now im using: <script type="text/javascript" charset="utf-8"> jQuery(function() { jQuery('#multimonth').datePickerMultiMonth({ numMonths: 12, inline: true, selectMultiple: true, startDate: '01/09/2009', // DD/MM/YY month: 8, // 0=JAN 1=FEB ... year: 2009 }).bind( 'dpMonthChanged', function(event, displayedMonth, displayedYear) { //uncomment if you have firebug and want to confirm this works as expected... //console.log('dpMonthChanged', arguments); }).bind( 'dateSelected', function(event, date, jQuerytd, status) { //uncomment if you have firebug and want to confirm this works as expected... //console.log('dateSelected', arguments); }).val( new Date().asString()).trigger('change'); jQuery('#getSelected').bind( 'click', function(e) { alert(jQuery('#multimonth').dpmmGetSelected()); return false; }); }); </script> and this part is not being selected, I took it from the select todays date demo .val(new Date().asString()).trigger('change');

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• R how to find NA values after using addNA function

  - by screechOwl

  I have a data frame with a bunch of categorical variables. Some of them contain NA's and I use the addNA function to convert them to an explicit factor level. My problem comes when I try to treat them as NA's they don't seem to register. Here's my example data set and attempts to 'find' NA's: df1 <- data.frame(id = 1:200, y =rbinom(200, 1, .5), var1 = factor(rep(c('abc','def','ghi','jkl'),50))) df1$var2 <- factor(rep(c('ab c','ghi','jkl','def'),50)) df1$var3 <- factor(rep(c('abc','ghi','nop','xyz'),50)) df1[df1$var1 == 'abc','var1'] <- NA df1$var1 <- addNA(df1$var1) df1$isNaCol <- ifelse(df1$var1 == NA, 1, 0);summary(df1$isNaCol) df1$isNaCol <- ifelse(is.na(df1$var1), 1, 0);summary(df1$isNaCol) df1$isNaCol <- ifelse(df1$var1 == 'NA', 1, 0);summary(df1$isNaCol) df1$isNaCol <- ifelse(df1$var1 == '<NA>', 1, 0);summary(df1$isNaCol) Also when I type ??addNA I don't get any matches. Is this a gray-market function or something? Any suggestions would be appreciated.

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• jQuery show based on checkbox value at page load.

  - by Jacob Huggart

  I have an ASP MVC web app and on one of the pages there is a set of Main checkboxes with sub-checkboxes underneath them. The sub-checkboxes should only show up when the corresponding main checkbox is checked. I have the following code that works just fine as long as none of the checkboxes are checked when the page loads. $("input[id$=Suffix]").change(function() { prefix = this.id; if (!$(this).hasClass("checked")) { $("tr[id^=" + prefix + "]").show(); $(this).addClass("checked"); } else { $("tr[id^=" + prefix + "]").hide(); $(this).removeClass("checked"); } }); Now I need to check a database for the values of the main checkboxes. I get the values, and can check the boxes on page load. But when the page comes up, the sub-checkboxes are not displayed when the main checkbox is checked. Also, if the main checkbox is checked when the page loads, the sub-checkboxes are only displayed when the main chcekbox is unchecked (obviously because the above function only acts on .change()). What do you all suggest I try? If you need further explanation feel free to ask. edit: btw, all of this is in $(document).ready()

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• How can I load a view based on how long I hold a UIButton?

  - by Thomas

  Hello all, I've searched the net and documentation, but haven't found anything quite like what I'm trying to do. I'm working on an app where I want to load one view if a UIButton is held for x seconds, another if it's held for x+y seconds, etc. I found this tutorial. The problem I'm running into is, how do I switch the length of the button press? The tutorial switched the number of taps. -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { NSSet *allTouches = [event allTouches]; switch ([allTouches count]) { case 1: // Single touch { // Get the first touch. UITouch *touch = [[allTouches allObjects] objectAtIndex:0]; switch ([touch tapCount]) { case 1: // Single Tap. { // Start a timer timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(showAlertView:) userInfo:nil repeats:NO]; [timer retain]; } break; case 2: // Double tap. break; } } break; case 2: // Double touch { } break; default: break; } } Any suggestions? Thanks! Thomas

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• Find & Replace - using a Regex for this?

  - by Jack W-H

  Hey folks. Regexs make me cry, so, I came here for help. I'm looking for some tips on Find & Replace in Panic's Coda. I know the F&R is pretty advance but I'm just looking for the best way to do this. I'm trying to rewrite a 'template engine' (very basic) I have going on with a webapp I'm coding in PHP (CodeIgniter). Currently I'm calling my template like so: $this->load->view('subviews/template/headerview'); $this->load->view('subviews/template/menuview'); $this->load->view('subviews/template/sidebar'); $this->load->view('The-View-I-Want-To-Load'); // This is the important line $this->load->view('subviews/template/footerview'); However it's inefficient using five lines of code every time I want to load up a different page, in every different controller. So I rewrote it like this: $data['view'] = 'The-View-I-Want-To-Load'; $this->load->view('template',$data); That way if I need to make any major changes to the design it can easily be done from the template.php view file (which contains the header, menu, sidebar views etc. etc.). However I use the previous 5-lines all over the place in many different controllers and functions. So, my question is --- How can I find and replace the old template engine (5 lines of code) for the new one - substituting in the name of the view in the important, unique line for the one in $data['view]? Does that make any sense?! If not I'll try and rephrase! I mean, is there a way of doing this via a Regex or something? Or am I on completely the wrong lines here? Thanks for your help Jack

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• JDBC/OSGi and how to dynamically load drivers without explicitly stating dependencies in the bundle?

  - by Chris

  Hi, This is a biggie. I have a well-structured yet monolithic code base that has a primitive modular architecture (all modules implement interfaces yet share the same classpath). I realize the folly of this approach and the problems it represents when I go to deploy on application servers that may have different conflicting versions of my library. I'm dependent on around 30 jars right now and am mid-way though bnding them up. Now some of my modules are easy to declare the versioned dependencies of, such as my networking components. They statically reference classes within the JRE and other BNDded libraries but my JDBC related components instantiate via Class.forName(...) and can use one of any number of drivers. I am breaking everything up into OSGi bundles by service area. My core classes/interfaces. Reporting related components. Database access related components (via JDBC). etc.... I wish for my code to be able to still be used without OSGi via single jar file with all my dependencies and without OSGi at all (via JARJAR) and also to be modular via the OSGi meta-data and granular bundles with dependency information. How do I configure my bundle and my code so that it can dynamically utilize any driver on the classpath and/or within the OSGi container environment (Felix/Equinox/etc.)? Is there a run-time method to detect if I am running in an OSGi container that is compatible across containers (Felix/Equinox/etc.) ? Do I need to use a different class loading mechanism if I am in a OSGi container? Am I required to import OSGi classes into my project to be able to load an at-bundle-time-unknown JDBC driver via my database module? I also have a second method of obtaining a driver (via JNDI, which is only really applicable when running in an app server), do I need to change my JNDI access code for OSGi-aware app servers?

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• Visual Studio 2008 project file does not load because of an unexpected encoding change.

  - by Xenan

  In our team we have a database project in visual Studio 2008 which is under source control by Team Foundation Server. Every two weeks or so, after one co-worker checks in, the project file won't load on the other developers machines. The error message is: The project file could not be loaded. Data at the root level is invalid. Line 1, position 1. When I look at the project file in Notepad++, the file looks like this: ??<NUL?NULxNULmNULlNUL NULvNULeNULrNULsNULiNULoNULnNUL ... and so on (you can see <?xml version in this) whereas an normal project file looks like: <?xml version="1.0" encoding="utf-16"?> ... So probably something is wrong with the encoding of the file. This is a problem for us because it turns out to be impossible to get the file encoding correct again. The 'solution' is to throw away the project file an get the last know working version from source control. According to the file, the encoding should be UTF-16. According to Notepad++, the corrupted file is actually UTF-8. My questions are: Why is Visual Studio messing up the encoding of the project file, apparently at random times and at random machines? What should we do to prevent this? When it has happened, is there a possibility to restore the current file in the correct encoding instead of pulling an older version from source control? As a last note: the problem is with one single project file, all other project files don't expose this problem.

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• javascript: waiting for an iframe page to load before writing to it (but not from the page that's tr

  - by Bill Dawes

  Apologies if this has been answered elsewhere, but I haven't been able to find it referenced. (Probably because nobody else would want to do such a daft thing, I admit). So, I have a page with three iframes in it. An event on one triggers a javascript function which loads new pages into the other two iframes; ['topright'] and ['bottomright']. However, javascript in the page that is being loaded into iframe 'topright' then needs to send information to elements in the 'bottomright' iframe. window.frames['bottomright'].document.subform.ID_client = client; etc But this will only work if the page has fully loaded into the bottomright frame. So what would be the most efficient way for that code in the 'topright' iframe to check and ensure that that form element in the bottomright frame is actually available to write to, before it does write to it? Bearing in mind that the page load has NOT been triggered from the topright frame, so I can't simply use an onLoad function. (I know this probably sounds like a hideously tortuous route for getting data from one page to another, but that's another story. The client is always right, etc...:-))

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• How to dynamically load a progressive jpeg/jpg in actionscrip-3 using Flash and know it's width/heig

  - by didibus

  Hi, I am trying to dynamically load a progressive jpeg using actionscript 3. To do so, I have created a class called Progressiveloader that creates a URLStream and uses it to streamload the progressive jpeg bytes into a byteArray. Everytime the byteArray grows, I use a Loader to loadBytes the byteArray. This works, to some extent, because if I addChild the Loader, I am able to see the jpeg as it is streamed, but I am unable to access the Loader's content and most importantly, I can not change the width and height of the Loader. After a lot of testing, I seem to have figured out the cause of the problem is that until the Loader has completely loaded the jpg, meaning until he actually sees the end byte of the jpg, he does not know the width and height and he does not create a content DisplayObject to be associated with the Loader's content. My question is, would there be a way to actually know the width and height of the jpeg before it is loaded? P.S.: I would believe this would be possible, because of the nature of a progressive jpeg, it is loaded to it's full size, but with less detail, so size should be known. Even when loading a normal jpeg in this way, the size is seen on screen, except the pixels which are not loaded yet are showing as gray. Thank You.

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• Rails - eager load the number of associated records, but not the record themselves.

  - by Max Williams

  I have a page that's taking ages to render out. Half of the time (3 seconds) is spent on a .find call which has a bunch of eager-loaded associations. All i actually need is the number of associated records in each case, to display in a table: i don't need the actual records themselves. Is there a way to just eager load the count? Here's a simplified example: @subjects = Subject.find(:all, :include => [:questions]) In my table, for each row (ie each subject) i just show the values of the subject fields and the number of associated questions for each subject. Can i optimise the above find call to suit these requirements? I thought about using a group field but my full call has a few different associations included, with some second-order associations, so i don't think group by will work. @subjects = Subject.find(:all, :include => [{:questions => :tags}, {:quizzes => :tags}], :order => "subjects.name") :tags in this case is a second-order association, via taggings. Here's my associations in case it's not clear what's going on. Subject has_many :questions has_many :quizzes Question belongs_to :subject has_many :taggings has_many :tags, :through => :taggings Quiz belongs_to :subject has_many :taggings has_many :tags, :through => :taggings Grateful for any advice - max

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• How can you transform a set of numbers into mostly whole ones?

  - by Alice

  Small amount of background: I am working on a converter that bridges between a map maker (Tiled) that outputs in XML, and an engine (Angel2D) that inputs lua tables. Most of this is straight forward However, Tiled outputs in pixel offsets (integers of absolute values), while Angel2D inputs OpenGL units (floats of relative values); a conversion factor between these two is needed (for example, 32px = 1gu). Since OpenGL units are abstract, and the camera can zoom in or out if the objects are too small or big, the actual conversion factor isn't important; I could use a random number, and the user would merely have to zoom in or out. But it would be best if the conversion factor was selected such that most numbers outputted were small and whole (or fractions of small whole numbers), because that makes it easier to work with (and the whole point of the OpenGL units is that they are easy to work with). How would I find such a conversion factor reliably? My first attempt was to use the smallest number given; this resulted in no fractions below 1, but often lead to lots of decimal places where the factors didn't line up. Then I tried the mode of the sequence, which lead to the largest number of 1's possible, but often lead to very long floats for background images. My current approach gets the GCD of the whole sequence, which, when it works, works great, but can easily be thrown off course by a single bad apple. Note that while I could easily just pass the numbers I am given along, or pick some fixed factor, or use one of the conversions I specified above, I am looking for a method to reliably scale this list of integers to small, whole numbers or simple fractions, because this would most likely be unsurprising to the end user; this is not a one off conversion. The end users tend to use 1.0 as their "base" for manipulations (because it's simple and obvious), so it would make more sense for the sizes of entities to cluster around this.

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• How to extend this design for a generic converter in java?

  - by Jay

  Here is a small currency converter piece of code: public enum CurrencyType { DOLLAR(1), POUND(1.2), RUPEE(.25); private CurrencyType(double factor) { this.factor = factor; } private double factor; public double getFactor() { return factor; } } public class Currency { public Currency(double value, CurrencyType type) { this.value = value; this.type = type; } private CurrencyType type; private double value; public CurrencyType getCurrencyType() { return type; } public double getCurrencyValue() { return value; } public void setCurrenctyValue(double value){ this.value = value; } } public class CurrencyConversion { public static Currency convert(Currency c1, Currency c2) throws Exception { if (c1 != null && c2 != null) { c2.setCurrenctyValue(c1.getCurrencyValue() * c1.getCurrencyType().getFactor() * c2.getCurrencyType().getFactor()); return c2; } else throw new Exception(); } } I would like to improve this code to make it work for different units of conversion, for example: kgs to pounds, miles to kms, etc etc. Something that looks like this: public class ConversionManager<T extends Convertible> { public T convert(T c1, T c2) { //return null; } } Appreciate your ideas and suggestions.

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• loading a href's content into a shadowbox using .load() HELP!!!

  - by kielie

  <script type="text/javascript"> $(function() { $('#wp-calendar a').click(function(event) { event.preventDefault(); var url = $(this).attr('href') + ' #content'; var loaded = Shadowbox.load(url); Shadowbox.open({ content: loaded, player: "html", title: "<?php the_title(); ?>", height: 300, width: 470, }); }); }); </script> That is the code I am using to try and display content in a shadowbox, I am using the default wordpress calendar and with jQuery/AJAX (if I am not mistaken) adding this click event to every link in the calendar, so that when a link is clicked, the content is loaded and displayed in a shadowbox instead of opening on a new page. When I click on one of the links all I get inside of the shadowbox is "undefined". As I am sure you can see in my code, I am still very new to this, so any help or pointers would be appreciated. Thanx in advance!

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• How to properly load HTML data from third party website using MVC+AJAX?

  - by Dmitry

  I'm building ASP.NET MVC2 website that lets users store and analyze data about goods found on various online trade sites. When user is filling a form to create or edit an item, he should have a button "Import data" that automatically fills some fields based on data from third party website. The question is: what should this button do under the hood? I see at least 2 possible solutions. First. Do the import on client side using AJAX+jQuery load method. I tried it in IE8 and received browser warning popup about insecure script actions. Of course, it is completely unacceptable. Second. Add method ImportData(string URL) to ItemController class. It is called via AJAX, does the import + data processing server-side and returns JSON-d result to client. I tried it and received server exception (503) Server unavailable when loading HTML data into XMLDocument. Also I have a feeling that dealing with not well-formed HTML (missing closing tags, etc.) will be a huge pain. Any ideas how to parse such HTML documents?

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• Save and Load Dictionary from encrypted or unreadable or binary format ?

  - by Prix

  I have a dictionary like the follow: public Dictionary<int, SpawnList> spawnEntities = new Dictionary<int, SpawnList>(); The class being used is as follow: public class SpawnList { public int NpcID { get; set; } public string Name { get; set; } public int Level { get; set; } public int TitleID { get; set; } public int StaticID { get; set; } public entityType Status { get; set; } public int TypeA { get; set; } public int TypeB { get; set; } public int TypeC { get; set; } public int ZoneID { get; set; } public int Heading { get; set; } public float PosX { get; set; } public float PosY { get; set; } public float PosZ { get; set; } } /// <summary>Entity type enum.</summary> public enum entityType { Ally, Enemy, SummonPet, NPC, Object, Monster, Gatherable, Unknown } How could I save this Dictionary to either a binary or encrypted format so I could later Load it again into my application ? My limitation is .Net 3.5 can't use anything higher.

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