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  • Looking for ideas how to refactor my (complex) algorithm

    - by _simon_
    I am trying to write my own Game of Life, with my own set of rules. First 'concept', which I would like to apply, is socialization (which basicaly means if the cell wants to be alone or in a group with other cells). Data structure is 2-dimensional array (for now). In order to be able to move a cell to/away from a group of another cells, I need to determine where to move it. The idea is, that I evaluate all the cells in the area (neighbours) and get a vector, which tells me where to move the cell. Size of the vector is 0 or 1 (don't move or move) and the angle is array of directions (up, down, right, left). This is a image with representation of forces to a cell, like I imagined it (but reach could be more than 5): Let's for example take this picture: Forces from lower left neighbour: down (0), up (2), right (2), left (0) Forces from right neighbour : down (0), up (0), right (0), left (2) sum : down (0), up (2), right (0), left (0) So the cell should go up. I could write an algorithm with a lot of if statements and check all cells in the neighbourhood. Of course this algorithm would be easiest if the 'reach' parameter is set to 1 (first column on picture 1). But what if I change reach parameter to 10 for example? I would need to write an algorithm for each 'reach' parameter in advance... How can I avoid this (notice, that the force is growing potentialy (1, 2, 4, 8, 16, 32,...))? Can I use specific design pattern for this problem? Also: the most important thing is not speed, but to be able to extend initial logic. Things to take into consideration: reach should be passed as a parameter i would like to change function, which calculates force (potential, fibonacci) a cell can go to a new place only if this new place is not populated watch for corners (you can't evaluate right and top neighbours in top-right corner for example)

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  • JPA merge fails due to duplicate key

    - by wobblycogs
    I have a simple entity, Code, that I need to persist to a MySQL database. public class Code implements Serializable { @Id private String key; private String description; ...getters and setters... } The user supplies a file full of key, description pairs which I read, convert to Code objects and then insert in a single transaction using em.merge(code). The file will generally have duplicate entries which I deal with by first adding them to a map keyed on the key field as I read them in. A problem arises though when keys differ only by case (for example: XYZ and XyZ). My map will, of course, contain both entries but during the merge process MySQL sees the two keys as being the same and the call to merge fails with a MySQLIntegrityConstraintViolationException. I could easily fix this by uppercasing the keys as I read them in but I'd like to understand exactly what is going wrong. The conclusion I have come to is that JPA considers XYZ and XyZ to be different keys but MySQL considers them to be the same. As such when JPA checks its list of known keys (or does whatever it does to determine whether it needs to perform an insert or update) it fails to find the previous insert and issuing another which then fails. Is this corrent? Is there anyway round this other than better filtering the client data? I haven't defined .equals or .hashCode on the Code class so perhaps this is the problem.

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  • Dealing with asynchronous control structures (Fluent Interface?)

    - by Christophe Herreman
    The initialization code of our Flex application is doing a series of asynchronous calls to check user credentials, load external data, connecting to a JMS topic, etc. Depending on the context the application runs in, some of these calls are not executed or executed with different parameters. Since all of these calls happen asynchronously, the code controlling them is hard to read, understand, maintain and test. For each call, we need to have some callback mechanism in which we decide what call to execute next. I was wondering if anyone had experimented with wrapping these calls in executable units and having a Fluent Interface (FI) that would connect and control them. From the top of my head, the code might look something like: var asyncChain:AsyncChain = execute(LoadSystemSettings) .execute(LoadAppContext) .if(IsAutologin) .execute(AutoLogin) .else() .execute(ShowLoginScreen) .etc; asyncChain.execute(); The AsyncChain would be an execution tree, build with the FI (and we could of course also build one without a FI). This might be an interesting idea for environments that run in a single threaded model like the Flash Player, Silverlight, JavaFX?, ... Before I dive into the code to try things out, I was hoping to get some feedback.

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  • Problem with reCaptcha and .NET

    - by vtortola
    Hi, I get this error with reCaptcha: 'Input error: response: Required field must not be blank challenge: Required field must not be blank privatekey: Required field must not be blank' I'm sending the data via POST, so I don't understand what is going on. This is the code I use: public static Boolean Check(String challenge, String response) { try { String privatekey = "7LeAbLoSAAAABJBn05uo6sZoFNoFnK2XKyF3dRXL"; String remoteip = HttpContext.Current.Request.UserHostAddress; WebRequest req = WebRequest.Create("http://api-verify.recaptcha.net/verify"); req.Method = "POST"; using (StreamWriter sw = new StreamWriter(req.GetRequestStream())) { sw.Write("privatekey={0}&remoteip={1}&challenge={2}&response={3}", privatekey, remoteip, challenge, response); sw.Flush(); } String resultString = String.Empty; String errorString = String.Empty; using (StreamReader sr = new StreamReader(req.GetResponse().GetResponseStream())) { resultString = sr.ReadLine(); errorString = sr.ReadLine(); } Boolean b; return Boolean.TryParse(resultString, out b) && b; } catch (Exception) { return false; } } (Of course that'is not the correct private key :P) I have no idea what the problem is about, I think I'm sending the data correctly, but that error says that apparently I'm not sending anything. What could be the problem? Cheers.

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  • Migrating data from Plone to Liferay, or how could I retrieve information from Plone's Data.fs

    - by brandizzi
    Hello, all. I need to migrate data from a Plone-based portal to Liferay. Has anyone some idea on how to do it? Anyway, I am trying to retrieve data from Data.fs and store it in a representation easier to work, such as JSON. To do it, I need to know which objects I should get from Plone's Data.fs. I already got the Products.CMFPlone.Portal.PloneSite instance from the Data.fs, but I cannot get anything from it. I would like to get the PloneSite instance and do something like this: >>> import ZODB >>> from ZODB import FileStorage, DB >>> path = r"C:\Arquivos de programas\Plone\var\filestorage\Data.fs" >>> storage = FileStorage.FileStorage(path) >>> db = DB(storage) >>> conn = db.open() >>> root = conn.root() >>> app = root['Application'] >>> plone_site = app.getChildNodes()[13] # 13 would be index of PloneSite object >>> a = plone_site.get_articles() >>> for article in a: ... print "Title:", a.title ... print "Content:", a.content Title: <some title> Conent: <some content> Title: <some title> Conent: <some content> Of course, it did not need to be so straightforward. I just want some information about the structure of PloneSite and how to recover its data. Has anyone some idea? Thank you in advance!

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  • Proper use of HTTP status codes in a "validation" server

    - by Romulo A. Ceccon
    Among the data my application sends to a third-party SOA server are complex XMLs. The server owner does provide the XML schemas (.xsd) and, since the server rejects invalid XMLs with a meaningless message, I need to validate them locally before sending. I could use a stand-alone XML schema validator but they are slow, mainly because of the time required to parse the schema files. So I wrote my own schema validator (in Java, if that matters) in the form of an HTTP Server which caches the already parsed schemas. The problem is: many things can go wrong in the course of the validation process. Other than unexpected exceptions and successful validation: the server may not find the schema file specified the file specified may not be a valid schema file the XML is invalid against the schema file Since it's an HTTP Server I'd like to provide the client with meaningful status codes. Should the server answer with a 400 error (Bad request) for all the above cases? Or they have nothing to do with HTTP and it should answer 200 with a message in the body? Any other suggestion? Update: the main application is written in Ruby, which doesn't have a good xml schema validation library, so a separate validation server is not over-engineering.

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  • configure batch to sent minute info instead of entire stdout

    - by Daniel
    Hi all, I am working on a RedHat server along with several other users. We use the batch utility to set a job queue. Some of the programs that I use write stuff to stdout during the run, with info on who much data has been processed to far and estimated time until completion etc. batch -q z at> myScript -i somefile -o someotherfile By default, the batch util send an email to me (since I configured it using .forward) with the entire output from stdout. Since the scripts writes something to stdout a few times each second, the amount of log-stuff I get from a two-day script can be ˜20 Mbs. Clearly not what I want. I can of course pipe stdout to a file like so batch -q z at> myScript -i somefile -o someotherfile > myscript.stdout.log but then I get a blank e-mail from the util. So to my question: Is it possible to configure batch so that it sends time the job started and ended, or run time or some oth valuable information to me, instead of a 20 Mb mail or a blank mail? Note that the scripts that I use are binaries and I cannot customize the code to output less info in the first place (which would be the optimal solution I guess). Thanks /Daniel

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  • Can I use a plaintext diff algorithm for tracking XML changes?

    - by rinogo
    Hi all! Interesting question for you here. I'm working in Flex/AS3 on (for simplicity) an XML editor. I need to provide undo/redo functionality. Of course, one solution is to store the entire source text with each edit. However, to conserve memory, I'd like to store the diffs instead (these diffs will also be used to transmit updates to the server for auto-saving). My question is - can I use a plaintext diff algorithm for tracking these XML changes? My research on the internet indicates that I cannot do so. However, I'm obviously missing something. Plaintext diff provides functionality that is purportedly: diff(text, text') - diffs patch(text, diffs) - text' XML is simply text, so why can't I just use diff() and patch() to transform the text reliably? For example: Let's say that I'm a poet. When I write poetry, I use lots of funky punctuation... You know, like <, /, and . (You might see where I'm going with this...) If I'm writing my poetry in an application that uses diffs to provide undo/redo functionality, does my poetry become garbled when I undo/redo my edits? It's just text! Why does it make a difference to the algorithm? I obviously don't get something here...Thanks for explaining! :) -Rich

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  • In wicket, combine wicket:link with IAuthorizationStrategy

    - by seanizer
    Hi everybody. I use an IAuthorizationStrategy in wicket to limit access to certain pages. However, I also use html menus like this one: <div class="siteMenu"> <wicket:link> <a href="Page1.html" class="siteMenuLink"> <wicket:message key="pages.page1.title" /> </a> <a href="Page2.html" class="siteMenuLink"> <wicket:message key="pages.page2.title" /> </a> <a href="Page3.html" class="siteMenuLink"> <wicket:message key="pages.page3.title" /> </a> </wicket:link> </div> , that are automatically picked up and expanded using the wicket:link mechanism (like here: http://wicket.apache.org/examplenavomatic.html ). However, the IAuthorizationStrategy may not allow one or more of these target pages, so I may end up either with lots of links that lead to "permission denied" pages or lots of deactivated links (i.e. em tags or the like), neither of which is pretty. I could of course write an IComponentInstantiationListener that checks all BookmarkableLinks to see whether their target is accessible through the IAuthorizationStrategy and renders them invisible otherwise, but I wonder if there is an out-of-the-box solution to this problem. For clarification: I only use the isInstantiationAuthorized() method of IAuthorizationStrategy.

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  • jQuery validator not working in unit testing

    - by Dbugger
    I have this small HTML file: <html> <head></head> <body> <form id='MyForm'> <input type='text' required /> <input type='submit' /> </form> <script src="/js/jquery-1.9.0.js"></script> <script src="/js/jquery.validate.js"></script> <script> var validator = $("#MyForm").validate(); alert(validator.form()); </script> </body> </html> This alerts me with "false", which is the expected behaviour. The problem comes when I go to unit testing, with js-test-driver: TestCase("MyTests", { setUp: function() { this.myform = "<form id='MyForm'><input type='text' required /><input type='submit' /></form>"; this.validator = $(this.myform).validate(); jstestdriver.console.log("Does the form validate? " + this.validator.form()); }, test_empty: function() { }, }); This code returns me the string Does the form validate? true This is a simplified version of my project of course, but the point is that I dont seem to be able to unit test the validation module im developing, since the jQuery validate plugin doesnt seem to work. What am I missing?

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  • How to implement DisplayMemberPath for my Wpf UserControl?

    - by Bevan
    I'm writing a WPF User Control for my application, wrapping a ListBox and a few other items. The ListBox has a new ItemTemplate that presents four pieces of information for each item in my list. I can hard code each of the four bindings to specific properties on my list items and they display fine. However, I want my UserControl to be a bit more flexible. On ListBox and ComboBox there is a property DisplayMemberPath (inherited from ItemsControl) that seems to "inject" the appropriate property binding into the standard ItemTemplate. How do I achieve the same result with my user control? I'd like to set up four new properties to allow configuration of the information displayed: public string LabelDisplayPath { get; set; } public string MetricDisplayPath { get; set; } public string TitleDisplayPath { get; set; } public string SubtitleDisplayPath { get; set; } Reviewing ItemsControl.DisplayMemberPath with Reflector seems to go down the rabbit hole, I haven't been able to fathom how it works. Also, if I'm completely off course - and there's another, more "WPF" technique that I should be using instead, please point me in that direction.

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  • CSS animated menu

    - by Andrea
    I am trying to obtain something similar to the "share this on..." menu here but I don't quite understand how they are doing this, even after a look at their CSS. I refer to the fact that the images show up on hover. My first attempt would be something like <div id="share_on"> <ul> <li><a href="#"><img src="shareon-digg.png" /></a></li> <li><a href="#"><img src="shareon-reddit.png" /></a></li> ... <li><a href="#"><img src="shareon-stumbleupon.png" /></a></li> </ul> </div> and the CSS: #share_on {overflow: hidden} #share_on ul {margin-bottom: -16px} #share_on li {display: inline} #share_on li:hover {margin-top: -16px} Of course this does not work, which is why I am asking here. In the inactive state, only half of the icon shows up, which is the expected behaviour. But on hover, nothing changes. I also have tried some variations, like #share_on li:hover {margin-bottom: 16px} or #share_on li:hover {padding-bottom: 16px} but none of these works. Any ideas?

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  • Get coordinates of google maps markers

    - by App_beginner
    I am creating a databse containing the names and coordinates of all bus stops in my local area. I have all the names stored in my database, and now I need to add the coordinates. I am trying to get these of a website that contains them all as placemarks on a google map. It seems to me like they are being generated from a local server, and then added to the map. However I am unable to find exactly where the server is queried for the coordinates. I am hoping to collect these coordinates through the use of a screen scraper. However unless I am able to find where in the source code the coordinates are created this seems to be impossible. I can of course search and collect all these placemarks manually, but that will be very time consuming. So I am hoping that someone in here can help me. This is the website I am trying to scrape. The placemarks are marked by the blue bus sign: http://reiseplanlegger.skyss.no/scripts/travelmagic/TravelMagicWE.dll/?from=Brimnes+ferjekai+%28Eidfjord%29&to= You can also get the coordinates of a single placemark by writing the name of the stop in the search field and pushing the "Vis i kart" button. I hope someone can help me with this.

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  • Assigning console.log to another object (Webkit issue)

    - by Trevor Burnham
    I wanted to keep my logging statements as short as possible while preventing console from being accessed when it doesn't exist; I came up with the following solution: var _ = {}; if (console) { _.log = console.debug; } else { _.log = function() { } } To me, this seems quite elegant, and it works great in Firefox 3.6 (including preserving the line numbers that make console.debug more useful than console.log). But it doesn't work in Safari 4. [Update: Or in Chrome. So the issue seems to be a difference between Firebug and the Webkit console.] If I follow the above with console.debug('A') _.log('B'); the first statement works fine in both browsers, but the second generates a "TypeError: Type Error" in Safari. Is this just a difference between how Firebug and the Safari Web Developer Tools implement console? If so, it is VERY annoying on Apple's Webkit's part. Binding the console function to a prototype and then instantiating, rather than binding it directly to the object, doesn't help. I could, of course, just call console.debug from an anonymous function assigned to _.log, but then I'd lose my line numbers. Any other ideas?

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  • jQuery AJAX call not working in Webkit

    - by Brian
    I've run into a strange issue with Webkit based browsers (both Safari and Chrome - I'm testing on a Mac) and I am not sure what is causing it. Here's a small script I've created that replicates the issue: <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript" language="javascript"> function doRequest() { document.test.submit(); $.ajax({ type: "GET", cache: false, url: 'ajax.php?tmp=1', success: doSuccess }); } function doSuccess(t_data,t_status,req) { alert('Data is: '+ t_data +', XMLHTTPRequest status is: '+ req.status); } </script> </head> <body> <form name="test" method="post" action="ajax.html" enctype="multipart/form-data"> <input type="file" name="file_1"> <br><input type="button" value="upload" onclick="doRequest();"> </form> </body> </html> ajax.php is: <?php echo $_REQUEST['tmp']; ?> This works as is on Firefox, but the XMLHTTPRequest status is always "0" on both Safari and Chrome. If I remove this line: document.test.submit(); then it works, but of course the form is not submitted. I've tried changing the form submit button from "button" to "submit", but that also prevents it from working on Safari or Chrome. What I am trying to accomplish is: submit the form call another script to get status on the file being uploaded via the form (it's for a small upload progress meter). Any help is really appreciated - I'm hopeful it is just a quirk I'm not familiar with. Thanks! Brian

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  • Use of SAX parser in Android - OutOfMemory Issue

    - by Sephy
    Hi everybody, I have been using a SAX parser for a while now to get data from various XML, but today i'm banging my head on a new problem with a hudge XML (compared to the previous ones . here around 12k lines) with a lot of repetitive items in it. Most of the time, the items are part of a block : <content> <item lbl="blabla"> <item lbl="blabla"/> <item lbl="blabla"/> </item> <item lbl="blabla"> <item lbl="blabla"/> <item lbl="blabla"/> <item lbl="blabla"/> <item lbl="blabla"/> <item lbl="blabla"/> <item lbl="blabla"/> </item> </content> The blabla part is of course changing...But, I would like to keep the structure of items (they are titles and subtitles). And for that, I append each blabla with a starting and ending tag blabla, where x is the position in the tree of items (1, 2, 3 or 4). The slightly problematic part is that with that, I'm creating thousands of useless objects and the garbage collector doesn't have time to clean after the parser, and the inevitable OutOfMemory comes in my face... I have no idea of how to deal with it; The best technique would be if I could take the whole content of , but i'm not sure that this is possible with a SAX parser. Any help is welcome and any solution deeply thanked...

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  • Does replace into have a where clause?

    - by Lajos Arpad
    I'm writing an application and I'm using MySQL as DBMS, we are downloading property offers and there were some performance issues. The old architecture looked like this: A property is updated. If the number of affected rows is not 1, then the update is not considered successful, elseway the update query solves our problem. If the update was not successful, and the number of affected rows is more than 1, we have duplicates and we delete all of them. After we deleted duplicates if needed if the update was not successful, an insert happens. This architecture was working well, but there were some speed issues, because properties are deleted if they were not updated for 15 days. Theoretically the main problem is deleting properties, because some properties are alive for months and the indexes are very far from each other (we are talking about 500, 000+ properties). Our host told me to use replace into instead of deleting properties and all deprecated properties should be considered as DEAD. I've done this, but problems started to occur because of syntax error and I couldn't find anywhere an example of replace into with a where clause (I'd like to replace a DEAD property with the new property instead of deleting the old property and insert a new to assure optimization). My query looked like this: replace into table_name(column1, ..., columnn) values(value1, ..., valuen) where ID = idValue Of course, I've calculated idValue and handled everything but I had a syntax error. I would like to know if I'm wrong and there is a where clause for replace into. I've found an alternative solution, which is even better than replace into (using simply an update query) because deletes are happening behind the curtains if I use replace into, but I would like to know if I'm wrong when I say that replace into doesn't have a where clause. For more reference, see this link: http://dev.mysql.com/doc/refman/5.0/en/replace.html Thank you for your answers in advance, Lajos Árpád

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  • Is it a good practice to suppress warnings?

    - by Chris Cooper
    Sometimes while writing Java in Eclipse, I write code that generates warnings. A common one is this, which I get when extending the Exception class: public class NumberDivideException extends Exception { public NumberDivideException() { super("Illegal complex number operation!"); } public NumberDivideException(String s) { super(s); } } // end NumberDivideException The warning: The serializable class NumberDivideException does not declare a static final serialVersionUID field of type long. I know this warning is caused by my failure to... well, it says right above. I could solve it by including the serialVersionUID, but this is a one hour tiny assignment for school; I don't plan on serializing it anytime soon... The other option, of course, is to let Eclipse add @SuppressWarnings("serial"). But every time my mouse hovers over the Suppress option, I feel a little guilty. For programming in general, is it a good habit to suppress warnings? (Also, as a side question, is adding a "generated" serialVersionUID like serialVersionUID = -1049317663306637382L; the proper way to add a serialVersionUID, or do I have to determine the number some other way?)

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  • Using HAML with custom filters

    - by Guard
    Hi everybody. I feel quite excited about HAML and CoffeeScript and am working on tutorial showing how to use them in non-Rails environment. So, haml has easy to use command-line utility haml input.haml output.html. And, what is great, there exist a project (one of many forks: https://github.com/aussiegeek/coffee-haml-filter) aimed at providing custom filter that converts CoffeeScript into JS inside of HAML files. Unfortunately (or am I missing something?) haml doesn't allow specifying custom filters on the command line or with some configuration file. I (not being a Ruby fan or even knowing it enough) managed to solve it (based on some clever suggestion somewhere on SO) with this helper script: haml.rb require 'rubygems' require 'active_support/core_ext/object/blank' require 'haml' require 'haml/filters/coffee' template = ARGV.length > 0 ? File.read(ARGV.shift) : STDIN.read haml_engine = Haml::Engine.new(template) file = ARGV.length > 0 ? File.open(ARGV.shift, 'w') : STDOUT file.write(haml_engine.render) file.close Which is quite straightforward, except of requires in the beginning. Now, the questions are: 1) should I really use it, or is there another way to have on-demand HAML to HTML compilation with custom filters? 2) What about HAML watch mode? It's great and convenient. I can, of course, create a polling script in python that will watch the directory changes and call this .rb script, but it looks like a dirty solution.

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  • Spring-hibernate mapping problem

    - by James
    I have a spring-hibernate application which is failing to map an object properly: basically I have 2 domain objects, a Post and a User. The semantics are that every Post has 1 corresponding User. The Post domain object looks roughly as follows: class Post { private int pId; private String attribute; ... private User user; //getters and setters here } As you can see, Post contains a reference to User. When I load a Post object, I want to corresponding User object to be loaded (lazily - only when its needed). My mapping looks as follows: <class name="com...Post" table="post"> <id name="pId" column="PostId" /> <property name="attribute" column="Attribute" type="java.lang.String" /> <one-to-one name="User" fetch="join" class="com...User"></one-to-one> </class> And of course I have a basic mapping for User set up. As far as my table schema is concerned, I have a table called post with a foreign UserId which links to the user table. I thought this setup should work, BUT when I load a page that forces the lazy loading of the User object, I notice the following Hiberate query being generated: Select ... from post this_ left outer join user user2_ on this.PostId=user2_.UserId ... Obviously this is wrong: it should be joining UserId from post with UserId from user, but instead its incorrectly joining PostId from post (its primary key) with UserId from user. Any ideas? Thanks!

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  • Annotation to make available generic type

    - by mdma
    Given an generic interface like interface DomainObjectDAO<T> { T newInstance(); add(T t); remove(T t); T findById(int id); // etc... } I'd like to create a subinterface that specifies the type parameter: interface CustomerDAO extends DomainObjectDAO<Customer> { // customer-specific queries - incidental. } The implementation needs to know the actual template parameter type, but of course type erasure means isn't available at runtime. Is there some annotation that I could include to declare the interface type? Something like @GenericParameter(Customer.class) interface CustomerDAO extends DomainObjectDAO<Customer> { } The implementation could then fetch this annotation from the interface and use it as a substitute for runtime generic type access. Some background: This interface is implemented using JDK dynamic proxies as outlined here. The non-generic version of this interface has been working well, but it would be nicer to use generics and not have to create a subinterface for each domain object type. The actual type is needed at runtime to implement the newInstance method, amongst others.

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  • Linq to NHibernate wrapper issue using where statement

    - by Jacob
    I'am using wrapper to get some data from table users IQueryable<StarGuestWrapper> WhereQuery = session.Linq<User>().Where(u => u.HomeClub.Id == clubId && u.IsActive).Select( u => new StarGuestWrapper() { FullName = u.Name + " " + u.LastName, LoginTime = DateTime.Now, MonthsAsMember = 2, StarRating = 1, UserPicture = u.Photo.PhotoData, InstructorFullName = "Someone Xyz", TalkInteractionDuringSession = true, GoalInteractionDuringSession = false }); I use this without a problem as a IQueryable so I can do useful things before actually running the query. Like : WhereQuery.Skip(startRowIndex).Take(maximumRows).ToList(); and so on. The problem occurs using 'where' statement on query. For example: WhereQuery.Where(s => s.StarRating == 1) will throw an exception in runtime that 'StarRating' doesn't exist in User table - of course it doesn't it's a wrappers property. I will work if I materialize query by WhereQuery.AsEnumerable().Where(s => s.StarRating == 1) but then it loses all the sens of using IQueryable and I don't want to do this. What is strange and interesting that not all properties from wrapper throw error, all the bool values can be used in where statement. Example : WhereQuery.Where(s => s.TalkInteractionDuringSession) It works in EntityFramework , why do I get this error in NHibernate and how to get it working the way I want it to ?

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  • How to optimize this algorithm?

    - by Bakhtiyor
    I have two sets of arrays like this for example. $Arr1['uid'][]='user 1'; $Arr1['weight'][]=1; $Arr1['uid'][]='user 2'; $Arr1['weight'][]=10; $Arr1['uid'][]='user 3'; $Arr1['weight'][]=5; $Arr2['uid'][]='user 1'; $Arr2['weight'][]=3; $Arr2['uid'][]='user 4'; $Arr2['weight'][]=20; $Arr2['uid'][]='user 5'; $Arr2['weight'][]=15; $Arr2['uid'][]='user 2'; $Arr2['weight'][]=2; The size of two arrays could be different of course. $Arr1 has coefficient of 0.7 and $Arr2 has coefficient of 0.3. I need to calculate following formula $result=$Arr1['weight'][$index]*$Arr1Coeff+$Arr2['weight'][$index]*$Arr2Coeff; where $Arr1['uid']=$Arr2['uid']. So when $Arr1['uid'] doesn't exists in $Arr2 then we need to omit $Arr2 and vice versa. And, here is an algorithm I am using now. foreach($Arr1['uid'] as $index=>$arr1_uid){ $pos=array_search($arr1_uid, $Arr2['uid']); if ($pos===false){ $result=$Arr1['weight'][$index]*$Arr1Coeff; echo "<br>$arr1_uid has not found and RES=".$result; }else{ $result=$Arr1['weight'][$index]*$Arr1Coeff+$Arr2['weight'][$pos]*$Arr2Coeff; echo "<br>$arr1_uid has found on $pos and RES=".$result; } } foreach($Arr2['uid'] as $index=>$arr2_uid){ if (!in_array($arr2_uid, $Arr1['uid'])){ $result=$Arr2['weight'][$index]*$Arr2Coeff; echo "<br>$arr2_uid has not found and RES=".$result; }else{ echo "<br>$arr2_uid has found somewhere"; } } The question is how can I optimize this algorithm? Can you offer other better solution for this problem? Thank you.

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  • Implicit theme error:The property 'Content' was not found in type 'System.Windows.Controls.Control'.

    - by Mark
    I have got an error while trying to upgrade our large project to SL4. I didn't write the original theme and my theme knowlege isn't great. In my demo app I have a Label and a LabelHeader(which i have created and is just a derived class from Label with DefaultStyleKey = typeof(LabelHeader); I am styling lthem like this: <Style TargetType="themeControls:LabelHeader"> <Setter Property="Template"> <Setter.Value> <ControlTemplate> <DataInput:Label FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" Foreground="{TemplateBinding Foreground}" Content="{TemplateBinding Content}"/> </ControlTemplate> </Setter.Value> </Setter> <Setter Property="FontFamily" Value="Tahoma"/> <Setter Property="FontSize" Value="20"/> <Setter Property="Foreground" Value="Red"/> </Style> This works in SL3 but in SL4 I get: Error: Unhandled Error in Silverlight Application Code: 2500 Category: ParserError Message: The property 'Content' was not found in type 'System.Windows.Controls.Control'. File: Line: 9 Position: 168 If I change this: Content="{TemplateBinding Content}" to Content="XXX" Then there is no error but , of course, I get XXX in my label rather than the content I set in XAML on the page Any ideas how I can get this working? Demo project here: http://walkersretreat.co.nz/files/ThemeIssue.zip (Apologies for reposting, I have so far got no answers over here: http://forums.silverlight.net/forums/p/183380/415930.aspx#415930)

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  • Google Contacts API - No Redirection

    - by mecablaze
    Hello there, I am currently working on Contact Importer web app (in PHP) so I will be able to grab email address from a user's account on Gmail, Yahoo, etc and use them for my own evil purposes. Just kidding, my web app is very friendly. I thought I would start with Google. I found they have a fantastic little API called Google Contacts API which lets a programmer, like myself, to access a user's contacts. After a couple of hours of struggling and throwing shitty code together, I ran into a few road-blocks. My main question is this: Is there any way that I can have a user provide their username and password for Gmail on my website and have my code retrieve the contacts without that nasty redirection to a Google login page? It's kind of ruins the whole flow of my web app. I've looked into AuthSub, and gotten that to work, but of course the catch is that you have to redirect the user to obtain the access token. It looks like OAuth will have this same catch. The one ray of hope I have is the ClientLogin method of authentication. Again, there is a catch, sometimes Google throws you a CAPTCHA instead of the auth token. Again, the user flow is ruined. I've noticed that our good ol' friends over at Twitter have it working just fine. Does anyone know how they do it? Thanks!

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