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• OpenLayers .containsPoint after pan

  - by Adrian

  I've seem to have hit a bug or i have overlooked something. I written some code that enumerates through all the vector features on a OpenLayers Vector layer - to check if the mouse is inside a vector feature - if so then it displays some info based on the feature. I had to write my own methods to do this because the existing OpenLayers Controls( select etc) stop after finding a feature under the mouse, and i the possibility of several features being stacked on top of one another. My problem is that the .containsPoint method seems to be using coords from before a 'pan'. After zooming in or out the geometry seems to be in the right place and .containsPoint is works correctly when I wave the mouse over the map. Do I need to do something after the map has been panned to update something( feature's geometry)

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• Are there any free .NET OCR libraries that will perform OCR on an application window directly?

  - by Kelsey

  I am looking for a free .NET OCR library that will be able to do OCR on a given application window or even a image in memory (I can take a snapshot of the application window myself). I have looked at tessnet2 and MODI but both require an image located on disk. I need to use OCR because the application I am trying to write a script for does some wacky stuff that cannot be read using windows API and I need to scrape data from the screen. I have tested both of tessnet2 and MODI and they both can read the text mostly but because this has to run in an enviroment that will not be able to write to disk, I need it to be able to read directly from the applciation window or some type of memory stream. I am thinking OCR is my only soution but there could be other methods that I am not thinking of. Suggestions?

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• Setting refresh-policies in Ehcache

  - by Alex Ciminian

  Is there any to specify a data refresh policy in Ehcache? I am currently migrating an application from OSCache to Ehcache and I can't seem to find any way to specify when an element needs refreshing, besides setting timeToIdle and timeToLive. What I want is: on accessing an element from the cache, check with it's associated resource to see if it was updated later than the lastUpdateTime of the cache element. If yes, refresh the cache; else serve the content from the cache. In OSCache this was done by catching NeedsRefreshExceptions and setting custom refresh policies for the elements. I've been digging around in the docs for a while now, but I wasn't able to find any methods or examples of how I could accomplish this in Ehcache. Any help would be appreciated :). Alex

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• Insert an ajaxified Webpart into an existing MOSS site

  - by mamoo

  Hi everybody, I need to code a webpart which purpose is to asynchronously fetch some documents and display them into an existing page. Unfortunately I have to face a lot of rescritcions and my struggle to find a solution seems useleess so far. 1) I cannot use Microsoft asp.net ajax 2) I must use Jsonp because the called service (page, whatever...) is outside the site's domain. That's not a big problem. 3) I have no possibility to alter the existing page code, so I cannot reference an external library such as JQuery. 4) For the same reason I have no possibility to call my methods on the window.onLoad event, so here the question is: how can I be sure that everything is correctly loaded before triggering my ajax call? 5) Since several instances of the same webpart can be placed into the same page, can there be some possible conflicts among the various js functions?

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• Adding Listeners at runtime? - Java MVC

  - by Halo

  My model in my MVC pattern, generates components at runtime and gives them to the View to be displayed on the screen through update() method (you know, model is the observable and the view is the observer). But I also need to add listeners to these components, and the controller has the listener methods (because they say the MVC pattern is like this) and it's not involved in this update process. So I can't add the listeners at runtime, but only in the controller's constructor at startup. I've got an idea, that is making the controller the observer and then giving the data to the view, as well as adding the listeners. Do you think this would be OK?

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• dynamic array pointer to binary file

  - by Yijinsei

  Hi guys, Know this might be rather basic, but I been trying to figure out how to one after create a dynamic array such as double* data = new double[size]; be used as a source of data to be kept in to a binary file such as ofstream fs("data.bin",ios:binary"); fs.write(reinterpret_cast<const char *> (data),size*sizeof(double)); When I finish writing, I attempt to read the file through double* data = new double[size]; ifstream fs("data.bin",ios:binary"); fs.read(reinterpret_cast<char*> (data),size*sizeof(double)); However I seem to encounter a run time error when reading the data. Do you guys have any advice how i should attempt to write a dynamic array using pointers passed from other methods to be stored in binary files?

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• Are there any differences between MSSQL and MySQL when it comes to preventing SQL injection?

  - by Derek Adair

  I am used to developing in PHP/MySQL and have no experience developing with MSSQL. I've skimmed over the PHP MSSQL documentation and it looks similar to MySQLi in some of the methods I read about. For example, with MySQL I utilize the function mysql_real_excape_string(). Is there a similar function with PHP/MSSQL? What steps do I need to take in order to protect against SQL injection with MSSQL? What are the differences between MSSQL and MySQL pertaining to SQL injection prevention?

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• Why C# calls different overloaded method for different values of same type?

  - by Fabio Veronez

  Hello all, I have one doubt concerning c# method overloading call resolution. Let's suppose I have the following C# code: enum MyEnum { Value1, Value2 } public void test() { method(0); // this calls method(MyEnum) method(1); // this calls method(object) } public void method(object o) { } public void method(MyEnum e) { } Note that I know how to make it work but I would like to know why for one value of int (0) it calls one method and for another (1) it calls another. It sounds awkward since both values have the same type (int) but they are "linked" for different methods. Ps.: This is my first question here, i'm sorry if I made something wrong. =P

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• When to use buildout:eggs and when to install via zc.recipe.egg ?

  - by chiggsy

  There seem to be more than one way to install eggs into a buildout. Way 1: [buildout] ... eggs = eggname othereggname ... Way 2: [buildout] ... parts = eggs [eggs] recipe = zc.recipe.egg eggs = eggname = othereggname Both ways work. ( variation on way 2 would be to install each requirement as a separate part. ) What is the difference between these 2 methods? For my projects, I'm using buildout with djangorecipe and mr.developer.

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• How to pass the parameter in SQL query from PowerShell

  - by Zshava

  I have this code in PowerShell, that executes SQL query for UPDATE table: $Connection=new-object data.sqlclient.sqlconnection "server=server;database=mydb;trusted_connection=true;" $Connection.open() For( $i = 0; $i -le $ActID.Length; $i ++ ){ $cmd = New-Object System.Data.SqlClient.SqlCommand $cmd.Connection = $Connection $cmd.CommandText = " update Table set Note = @PATH " $cmd.Parameters.Add("@PATH", $ActID[$i].Values) | Out-Null $cmd.ExecuteNonQuery() } I try to update table with variable defined in this string: $cmd.Parameters.Add("@PATH", $ActID[$i].Values) | Out-Null But when i try to execute script, error log says that there is no value passed in $ActID[$i] Is there other methods to pass parameters (variables) in powershell queries?

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• Is writing to a socket an arbitrary limitation of the sendfile() syscall?

  - by Sufian

  Prelude sendfile() is an extremely useful syscall for two reasons: First, it's less code than a read()/write() (or recv()/send() if you prefer that jive) loop. Second, it's faster (less syscalls, implementation may copy between devices without buffer, etc...) than the aforementioned methods. Less code. More efficient. Awesome. In UNIX, everything is (mostly) a file. This is the ugly territory from the collision of platonic theory and real-world practice. I understand that sockets are fundamentally different than files residing on some device. I haven't dug through the sources of Linux/*BSD/Darwin/whatever OS implements sendfile() to know why this specific syscall is restricted to writing to sockets (specifically, streaming sockets). I just want to know... Question What is limiting sendfile() from allowing the destination file descriptor to be something besides a socket (like a disk file, or a pipe)?

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• jQuery code to delete all spans with same content but keep one

  - by Axel

  Hello, Say i have the following html: <span class="fruit">Apple</span> <span class="fruit">banana</span> <span class="fruit">Apple</span> <span class="fruit">Apple</span> <span class="fruit">orange</span> I tried different methods but it didn't work, I want a jQuery code to remove all (.fruit) spans with same content but keep one (the first if possible), so i will end up with the following: <span class="fruit">Apple</span> <span class="fruit">banana</span> <span class="fruit">orange</span> Thank you

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• UIPickerView not displaying

  - by 4thSpace

  I have a UIPickerView on a UIView. I've implemented its protocol and delegates in the .m file: <UIPickerViewDataSource, UIPickerViewDelegate> In IB, I've connected the above to the picker, which I also have an IBoutlet for. The methods look like this: - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView { return 1; } - (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component { return [self.arr count]; } - (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { return @"test"; } - (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { //do something } Any ideas which piece I'm missing to get the picker working?

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• Generate links for routes with non-parameter url segments on ASP.NET MVC 2

  - by spapaseit

  I have a route defined with several hardcoded (non-parameter) segments: routes.MapRoute(null, "suggestion/list/by/{tag}", new { controller = "Suggestion", action = "List", tag = UrlParameter.Optional }); Suppose I'm in the Index view of SuggestionController, which has a Suggestion object for Model, how can I create a link that matches that route? I'd rather use one of the provided helpers and keep the route name as null in order to avoid hard-coding to much on my views, but I can't figure out how to user these non-parameter segments in Html.ActionLink or RouteLink methods. I've even tried to render the link using plain ol' html <a href="/suggestion/list/by/<%=Model.Tag %>"><%=Model.Tag %></a> but this somehow didn't match the route either. There's probably a very simple solution and I might be over-complicating things in mi mind, but I'm at a loss. Any ideas? Thanks in advance.

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• UdpClient receiving and sending at the same time

  - by SoMoS

  Hello, I am maintaining other's code and its using the class UdpClient. The code declares one instance of UdpClient and receives data continuosly using the UdpClient.Receive(). When data is received it is processed in another thread and the UdpClient calls Receive() again. At the same time when the data is processed the same client is sending a response back. Question: Is this a bug? I think so because UdpClient is not thread safe so you can not call two methods at the same time. Anyways code is working fine but ...

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• Sequence numbers best practice

  - by Abdullah Jibaly

  What's the best practice or well known methods to implement sequence numbers for business entities such as invoices, purchase orders, job numbers, etc? I want to be able to save the latest value in the database and be able to set it programatically. Is it OK to use a table for this purpose that has a SEQUENCE_NAME, SEQUENCE_NUMBER tuple? I know some databases have a first class sequence type but others (eg, MySQL) do not so it's not something I want to rely on. If a table is used to hold these sequences what is the right way to get and increment them in a synchronized fashion to ensure no data inconsistencies arise?

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• Min Length Custom AbstractValidationAttribute and Implementing Castle.Components.Validator.IValidato

  - by CRice

  I see with the Castle validators I can use a length validation attribute. [ValidateLength(6, 30, "some error message")] public string SomeProperty { get; set; } I am trying to find a MinLength only attribute is there a way to do this with the out of the box attributes? So far my idea is implementing AbstractValidationAttribute public class ValidateMinLengthAttribute : AbstractValidationAttribute and making its Build method return a MinLengthValidator, then using ValidateMinLength on SomeProperty public class MinLengthValidator : Castle.Components.Validator.IValidator Does anyone have an example of a fully implemented IValidator or know where such documentation exists?? I am not sure what all the methods and properties are expecting. Thanks

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• iPhone storekit productIdentifier

  - by Garfield81

  I am trying to implement the StoreKit on iPhone 3.1.3 and keep getting the invalidProductIdentifier error. The question I have is the productKey used in following two methods the same? SKProductsRequest *request= [[SKProductsRequest alloc] initWithProductIdentifiers: [NSSet setWithObject: @"com.companyName.productName.upgrade"]]; SKPayment *payment = [SKPayment paymentWithProductIdentifier:@"com.companyName.productName.upgrade"]; The reason i as is because I have tried different productIdentifiers and SKProductsRequest always comes back with invalidProductIdentifier but SKPayment returns SKErrorUnknown for almost all the productIdentifier I tried but interestingly returns SKErrorPaymentInvalid for the @"com.companyName.productName.upgrade" (with the companyName and productName substituted). Any help would be appreciated.

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• How to get global variable in JQuery functions

  - by Tahir Akram

  I want to access my global javascript variable in JQuery methods. But I am unable to get it when I go to attach a click even to a div. As following. How can I do that? I mean do I need to rely on hidden fields for some state management? var divCount = 3; $(function() { //divCount is accessible here $("#sortable").sortable({ revert: true }); $("#new").click(function(){ if (divCount<7){ //divCount is not accessible here. why? and how? var thisCount = ++divCount; $("#draggable_"+thisCount).addClass("draggable"); } }); });

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• EJB 3 Session Bean Design for Simple CRUD

  - by sdoca

  I am writing an application that's sole purpose in life is to do CRUD operations for maintaining records in database. There are relationships between some of the tables/entities. Most examples I've seen for creating session beans deals with complex business logic/operations that interact with many entities which I don't have. Since my application is so very basic, what would be the best design for the session bean(s)? I was thinking of having one session bean per entity which had CRUD the methods defined. Then I thought of combining all of those session beans into a single session bean. And then I found this blog entry which is intriguing, but I must admit I don't understand all of it (what is a ServiceFacade?). I'm leaning towards session bean/entity class, but would like to hear more experienced opinions. Thanks.

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• Detecting syllables in a word

  - by user50705

  I need to find a fairly efficient way to detect syllables in a word. E.g., invisible - in-vi-sib-le There are some syllabification rules that could be used: V CV VC CVC CCV CCCV CVCC *where V is a vowel and C is a consonant. e.g., pronunciation (5 Pro-nun-ci-a-tion; CV-CVC-CV-V-CVC) I've tried few methods, among which were using regex (which helps only if you want to count syllables) or hard coded rule definition (a brute force approach which proves to be very inefficient) and finally using a finite state automata (which did not result with anything useful). The purpose of my application is to create a dictionary of all syllables in a given language. This dictionary will later be used for spell checking applications (using Bayesian classifiers) and text to speech synthesis. I would appreciate if one could give me tips on an alternate way to solve this problem besides my previous approaches. I work in Java, but any tip in C/C++, C#, Python, Perl... would work for me.

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• Cant get the catch statement to catch the custom exception

  - by user282807

  i have created a custom exception in the business layer and also using wcf layer where I am calling the methods in the business layer then in another website i am calling the method from wcf. i can see the message that i wrote in custom exception but the program goes staright to exception (the second catch block) instead of hitting my first catch block(where the custom exception is) when i hover over the exception i see my message but it's inside something called faultexception which i am not familiar with. and in there under details..there i see type= CanOnlyApplyOnceException. here is my code: protected void AddNewApplication() { try { using (var proxy = new ServiceReference1.ServiceClient()) { proxy.AddApplication(new Application { Credentials = 2, Comments = txtComments.Text, }); } } catch (CanOnlyApplyOnceException c) { ErrorSummary.AddError(c.Message, this); return; } catch (Exception) { lblStatus.Text = "There has been an error. Please try again"; } }

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• how to create a rounded transparent rectangle by using cocoa touch ?

  - by srikanth rongali

  Hi, I need to create a rounded rectangular box in which there will be 6 buttons in iPhone application. And the rectangular box is transparent. Each button have an image and text. And they are also transparent. ( Here transparent means we can see the background image of the box. Sorry for my vocabulary.) I could not get how to start it. I thought of the following one but, By using core graphics draw the outside rounded rectangle and then draw inside rectangles like 2x3 grid. Can I make with this ? Are there any good and easy methods than this. Please give me some idea how to start over with ? Thank you.

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• A way to avoid deriving from the provider classes in mvc authentication

  - by Shymep

  Looking for the best practice for authentication in MVC I unfortunately didn't find the clear answer to my question. Thinking of the problem I tried to imagine some priciples that could be useful in my design. Well, I would like to use a base AccountController class I want to place all the tables such as "Users", Roles, Rights etc into my own database. But I wouldn't like to implement the standard aspnetdb design (which can be easy got by using aspnet_regsql) So the main question is can I do this without deriving abstract classes like MembershipProvider, RoleProvider etc? What I would prefer not to do is implement all the abstract methods from these classes. The second question is still about the best practice for authentication e.g. for the small projects, for the large ones?

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• Invoke a subclass method of an anonymous class

  - by arjacsoh

  I am trying right now to dig into anonymous classes and one question was just arised I 'd prefer not to refer to much details and to pose my question straightforward: How can I invoke the method sizzle() in the following anonymous class: public class Popcorn { public void pop() { System.out.println("popcorn"); } } class Food { Popcorn p = new Popcorn() { public void sizzle() { System.out.println("anonymous sizzling popcorn"); } public void pop() { System.out.println("anonymous popcorn"); } }; public void popIt() { p.pop(); // OK, Popcorn has a pop() method p.sizzle(); // Not Legal! Popcorn does not have sizzle() } } It is known and definite in polymorphism rules that a refernce of a superclass cannot invoke methods of subclass without downcasting (even if it refers to an object of the given subclass). However in the above case what is the "key" to invoke the sizzle() method?

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