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• jquery Autocomplete : autocomplete does not stop if string does not match

  - by Daniyal

  I used the auto-complete function in jquery. It's data source are the results from a php-back-end. $("#ice_id").autocomplete("ice-ver.php", { extraParams : { flavour_id: $("#flavour_id").val() } }); Let us take following example: We type in the flavour ID 3992 ...(and 3992 exists in the database and is properly returned by the php backend). If we type in now 3992999 the auto-complete function should top showing anything up ...but unfortunately it still does, (could the problem lie within the fact that I am using integers instead of strings or chars?) Thanks in advance for any hints and best regards Daniyal

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• index help for a MySQL query using greater-than operator and ORDER BY

  - by Jaymon

  I have a table with at least a couple million rows and a schema of all integers that looks roughly like this: start stop first_user_id second_user_id The rows get pulled using the following queries: SELECT * FROM tbl_name WHERE stop >= M AND first_user_id=N AND second_user_id=N ORDER BY start ASC SELECT * FROM tbl_name WHERE stop >= M AND first_user_id=N ORDER BY start ASC I cannot figure out the best indexes to speed up these queries. The problem seems to be the ORDER BY because when I take that out the queries are fast. I've tried all different types of indexes using the standard index format: ALTER TABLE tbl_name ADD INDEX index_name (index_col_1,index_col_2,...) And none of them seem to speed up the queries. Does anyone have any idea what index would work? Also, should I be trying a different type of index? I can't guarantee the uniqueness of each row so I've avoided UNIQUE indexes. Any guidance/help would be appreciated. Thanks!

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• How to query flags stored as enum in NHibernate

  - by SztupY

  How to do either a HQL or a Criteria search (the latter is preferred) involving an enum that is used as flags. In other words, I have a persisted enum property that stores some kind of flags. I want to query all the records that have one of these flags set. Using Eq won't work of course because that will only be true, if that is the only flag set. Solving this using the Criteria API would be the best, but if this is only doable using HQL that is good too.

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• iphone google maps crosshair button

  - by xastor

  I would like to use or emulate a button like the gps button in the bottom left corner of the standard maps application on the iphone OS. The button behaves like a toggle button where gps is enabled or disabled depending on whether it is pushed and it may hold a small spinner component while the gps is finding your position. Does anyone know if this component can be easily constructed using default components? If no, what would be the best way to develop such a component? Is the crosshair/target icon a generic icon that I can re-use?

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• Initializing a Global Struct in C

  - by Scott

  What is the best way to accomplish the following in C? #include <stdio.h> struct A { int x; }; struct A createA(int x) { struct A a; a.x = x; return a; } struct A a = createA(42); int main(int argc, char** argv) { printf("%d\n", a.x); return 0; } When I try to compile the above code, the compiler reports the following error: "initializer element is not constant" The bad line is this one: struct A a = createA(42); Can someone explain what is wrong? I'm not very experienced in C. Thanks!

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• Sharing WPF RichTextBox content with Silverlight RichTextBox

  - by Stewart Armbrecht

  Has anyone figured out the best way to persist a WPF and Silverlight RichTextBox content so that it can be shared between the two? I haven't had the time to test through this so I wanted to see if anyone else has. I currently have a WPF applicaiton that saves the content of a RichTextBox as a blob in the database using the following code: byte[] result = null; TextRange range = new TextRange(flowDocument.ContentStart, flowDocument.ContentEnd); if (range.IsEmpty == false) { using (MemoryStream strm = new MemoryStream()) { range.Save(strm, DataFormats.XamlPackage, true); result = strm.ToArray(); strm.Close(); } } return result; I am building a silverlight version of the application and want to know how I can load (and save) this content using the Silverlight RichTextBox so that it can still be using in the WPF application.

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• Translation of clustering problem to graph theory language

  - by honk

  I have a rectangular planar grid, with each cell assigned some integer weight. I am looking for an algorithm to identify clusters of 3 to 6 adjacent cells with higher-than-average weight. These blobs should have approximately circular shape. For my case the average weight of the cells not containing a cluster is around 6, and that for cells containing a cluster is around 6+4, i.e. there is a "background weight" somewhere around 6. The weights fluctuate with a Poisson statistic. For small background greedy or seeded algorithms perform pretty well, but this breaks down if my cluster cells have weights close to fluctuations in the background. Also, I cannot do a brute-force search looping through all possible setups because my grid is large (something like 1000x1000). I have the impression there might exist ways to tackle this in graph theory. I heard of vertex-covers and cliques, but am not sure how to best translate my problem into their language.

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• WCF Data Services consuming data from EF based repository

  - by John Kattenhorn

  We have an existing repository which is based on EF4 / POCO and is working well. We want to add a service layer using WCF Data Services and looking for some best practice advice. So far we have developed a class which has a IQueryable property and the getter triggers the repository 'get all users' method. The problem so far have been two-fold: 1) It required us to decorate the ID field of the poco object to tell data service what field was the id. This now means that our POCO object is not 'pure'. 2) It cannot figure out the relationships between the objects (which is obvious i guess). I've now stopped this approach and i'm thinking that maybe we should expose the OBjectContext from the repository and use more 'automatic' functionality of EF. Has anybody got any advice or examples of using the repository pattern with WCF Data Services ?

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• tomcat JAXB 1 and 2 linkageerror

  - by Alex

  Hi there, I'm running a tomcat 6, spring, apache cxf webservice, know it is a must to add one third party library to my webapp to fulfill an order. I have jaxb-impl-2.1.12.jar for apache cxf in WEB-INF/lib folder and the new library which contains the JAXB 1.0 runtime. JAXB 2 ist used by apache cxf for dynamic clients (i need them). So is there a possibility to run the webapps with both libraries? Best regards Alex Caused by: java.lang.LinkageError: You are trying to run JAXB 2.0 runtime but you have old JAXB 1.0 runtime earlier in the classpath. Please remove the JAXB 1.0 runtime for 2.0 runtime to work correctly.

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• How do I parse JSON from a Java HTTPResponse?

  - by Joe Ludwig

  I have an HttpResponse object for a web request I just made. The response is in the JSON format, so I need to parse it. I can do it in an absurdly complex way, but it seems like there must be a better way. Is this really the best I can do? HttpResponse response; // some response object Reader in = new BufferedReader( new InputStreamReader(response.getEntity().getContent(), "UTF-8")); StringBuilder builder= new StringBuilder(); char[] buf = new char[1000]; int l = 0; while (l >= 0) { builder.append(buf, 0, l); l = in.read(buf); } JSONTokener tokener = new JSONTokener( builder.toString() ); JSONArray finalResult = new JSONArray( tokener ); I'm on Android if that makes any difference.

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• How to access uploaded files in Ruby

  - by Jeff King

  I am trying use a Java Uploader in a ROR app (for its ease of uploading entire directories). The selected uploader comes with some PHP code that saves the files to the server. I am trying to translate this code to Ruby, but am stumped on this point: PHP has a very convenient superglobal – $_FILES – that contains a hash of all files uploaded to the current script via the HTTP POST method. It appears Ruby does not have a similar resource. Lacking that, what is the best way to access and save the uploaded files? I am using the JavaPowUpload uploader ( http://www.element-it.com/OnlineHelpJavaPowUpload/index.html ).

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• Symfony2: automatically logging in users from their Windows session

  - by Paul Maclean

  In Symfony2 I have built an intranet. It currently uses the FOSUserBundle and an LDAP bundle to log users in, and I would like to add the functionality to log in user from their session in Windows. I found an NTLM script for PHP and an updated version of it, but I haven't been able to incorporate them into Symfony2. I also found an NTLM bundle for Symfony2, but it was written for an older version of Symfony and it is not maintained anymore. I was unable to rewrite it and get it to work. My question is; how could I automatically log in users from their Windows session in my Symfony2-app, in addition to the already present LDAP functionality? What would be the best and easiest way?

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• chat application: pubsubhub vs xmpp

  - by sofia

  I'm unsure on the best stack to build a chat application. Currently I'm thinking of two main options: facebook tornado cons: does not use the main chat protocol xmpp but pubsubhubbub pros: i really like its simplicity for development (webserver + webframework); pubsubhubbub also seems simpler as a protocol than xmpp; and i know python xmpp + bosch, punjab, ejabberd cons: don't know erlang; overall seems a bit harder to develop pros: uses xmpp protocol The chat app will need to have the following: Private messages Public rooms Private rooms Chat history for rooms (not forever, just the last n messages) html embedding url to chat room Both options seem scalable so that's not really my worry (we're thinking of running the app in amazon's ec2 as well). I know there's a project that builds a xmpp server using tornado but it's not ready for production use and our deadline isn't that big. Basically my main worry is ease of development vs somehow regretting later using pubsubhubbub to develop a chat app but I read somewhere that PubSubHubbub might eventually replace XMPP as REST replaced SOAP - so what do you think?

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• Database theory - relationship between two tables

  - by iansinke

  I have a database with two tables - let's call them Foo and Bar. Each foo may be related to any number of bars, and each bar may be related to any number of foos. I want to be able to retrieve, with one query, the foos that are associated with a certain bar, and the bars that are associated with a certain foo. My question is, what is the best way of recording these relationships? Should I have a separate table with records of each relationship (e.g. two columns, foo and bar)? Should the foo table have a column for a list of bars, and vice versa? Is there another option that I'm overlooking? I'm using SQL Server, if that makes a difference.

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• issues horizontal scrolling using jQuery.ScrollTo / jQuery.SerialScroll

  - by kapil.israni

  Hi, I am trying to develop auto horizontal scrolling for our website using - jQuery.ScrollTo / jQuery.SerialScroll. I am not sure if this is the best jquery library to do that, but if there's something better, please let me know. Here's the behavior that I want, check out foursquare's "Recent Activity" list. The data that will refresh will come from a ajax request that I make every few seconds using window.setInterval. I am not really a CSS/java script guy so I havent been able to figure out jQuery.SerialScroll. Here's the website - look at the "Live job Feeds" list. Currently the list does refresh the data coming from the ajax call, but I dont see the effect, the animation, in fact I dont even think serialScroll is being used. Right now I am doing a - $('#feed-ticker').prepend(content) to pre-append the newly arrived data. You can do a view source to look at the current code. Any help would be really appreciated. Thanks.

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• Cannot convert the value in attribute '[attr]' to object of type 'System.Windows.TemplateBindingExte

  - by Krimson

  Hi, I get this error when I define my attached dependency properties in a class outside the class hierarchy and set the owner to a common parent class. Attached dependency property in WindowBase class (outside class hierarchy = generated error): public static readonly DependencyProperty AreaColorProperty = DependencyProperty.RegisterAttached("AreaColor", typeof(AreaColor), typeof(Window)); TemplateBinding that fails {TemplateBinding local:WindowBase.AreaColor} If I instead define the attached dependency property in a class within the class heirarchy and set the owner to this class, then I don't get any errors, why is this? Attached dependency property in WindowBase (within class hierarchy = no errors): public static readonly DependencyProperty AreaColorProperty = DependencyProperty.RegisterAttached("AreaColor", typeof(AreaColor), typeof(WindowBase)); Best Regards, Jesper

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• Memory efficient way of inserting an array of objects with Core Data

  - by randombits

  I'm working on a piece of code for an iPhone application that fetches a bunch of data from a server and builds objects from it on the client. It ends up creating roughly 40,000 objects. They aren't displayed to the user, I just need to create instances of NSManagedObject and store them to persistent storage. Am I wrong in thinking that the only way to do this is to create a single object, then save the context? is it best to create the objects all at once, then somehow save them to the context after they're created and stored in some set or array? If so, can one show some example code for how this is done or point me in the direction to code where this is done? The objects themselves are relatively straight forward models with string or integer attributes and don't contain any complex relationships.

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• How to make developers follow coding standards?

  - by Josh

  How can I make developers follow coding standards? In our company: I've given documents and they don't have the patience to read it and follow it. I've tried telling them again and again "please do it this way" they nod their heads, but still do it the wrong way We're doing a project for the third time and still they don't seem to follow it properly. I'm now so tired of this. What is the best way to set standards for coding and make sure they follow them? Edit: There are just about 10 developers in my team. They're over pressurized and do not take the time to put comments and do the code neatly since there's more pressure to complete the product from our management. What would be the solution for this?

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• creating new usercontrols at runtime in ASP.NET MVC

  - by Paul Connolly

  Hi everyone, My situation is that the user is creating an entity on my site which contains the particlars of the driectors of that company, name address etc.. The Director form is a separate user control with the appropriate textboxes etc. At run time we don't know how many of these directors there will be so I need one to be able to use something like an "ADD DIRECTOR" or "DELETE DIRECTOR" button which will present or delete the another usercontrol to add the additional director. Currently I am trying to make this happen within a pane of the JQuery Accordion control. I have looked many places for how to do this but to no avail. Can anyone tell me where I might find some inforamation about how I can do this? All the best Paul

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• java annotations: library to override annotations with xml files

  - by flybywire

  Java has annotations and that is good. However, some developers feel that it is best to annotate code with metadata using xml files - others prefer annotations but would use metadata to override annotations in source code. I am writing a Java framework that uses annotations. The question is: is there a standard way to define and parse metadata from xml files. I think this is something every framework that uses annotations could benefit from but I can seem to find something like this on the Internet. Must I roll my own xml parsing/validation or has someone already done something like this?

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• Accessing html form input type=text using jquery from a windows forms webbrowser-control

  - by simply-tom

  I have two elements on my Windows Forms application: Webbrowser-Control Button Inside of the webbrowser-control I show a very simple html-form with two input type=text. I press the button and get access to both text fields. Last year at the Qt developer conference there was a quite good presentation: http://labs.trolltech.com/blogs/2009/04/17/jquery-and-qwebelement/ void highlightAllLinks() { QString code = "$('a').each( function () { $(this).css('background-color', 'yellow') } )"; view-page()-mainFrame()-evaluateJavaScript(code); } But I have to do this with .net and Windows Forms. Anyone knowing a good tutorial? Best regards,Tom

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• How can I convert Perl one-liners into complete scripts?

  - by Stefan Lasiewski

  I find a lot of Perl one-liners online. Sometimes I want to convert these one-liners into a script, because otherwise I'll forget the syntax of the one-liner. For example, I'm using the following command (from nagios.com): tail -f /var/log/nagios/nagios.log | perl -pe 's/(\d+)/localtime($1)/e' I'd to replace it with something like this: tail -f /var/log/nagios/nagios.log | ~/bin/nagiostime.pl However, I can't figure out the best way to quickly throw this stuff into a script. Does anyone have a quick way to throw these one-liners into a Bash or Perl script?

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• Understanding what SPARQL is

  - by user73119

  This is a terribly beginner series of questions, but after reading through a good 30 SPARQL tutorials I can't seem to wrap my head around what SPARQL is or how to begin using it. Is it executed on the client side? Is microsoft somehow going to be able to mess this up? Can you use a common relational database (SQL)? Are there particular resources you recommend over others for learning? Do you feel it is premature to begin investing myself in this? Best way to get set up and running to start tinkering? The RDFA examples I have seen are very inspiring. I am currently a big proponent of using microformats but would really like to take it further. I currently develop in PHP, but have only found a Java library.

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• Which ORM to use with SQL Azure?

  - by Jamie Chapman

  Just wondering what everyones thoughts on what ORM to use for SQL Azure? I'm fairly comfortable using LINQ-to-SQL and I believe it is possible to get it working with SQL Azure. However, from my understanding (correct me if I'm wrong), no further improvements will be made to Linq-to-SQL in future releases of the .NET framework? Alternatively, there is the entity framework... and further afield from the Microsoft Camp is NHibernate. Ideally, any additional suggestions made should be free or open source. I have seen Telerik's ORM but this of course, is a commercial product. I can get the definitions/benefits of each ORM myself by doing a Google search, but I was just interested in peoples opinions as to which ORM seems to work best for them (even if it is none of the above).

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• WinForms - Localization - UI controls positions different in additional Culture

  - by binball

  Hi, I did my UI settings.Original language is English. After that I set Localizable property to True. Copied original resx file to frmMain.de-De.resx (for example). Translated all strings. Everything works. But now I would like to change positions of controls. After that changes are visible only for original/primary Culture (En). When I change Culture to de-De then UI controls are on the "old positions"(?!) Is this normal behaviour? :O I'm unable to change controls positions on my form after localization? Can someone explain me this and give some best solution. I really have to change UI design but I don't want to manual copy all translated strings again. If my description is not clear then I can post source code, just please let me know. I use VS 2008. Greetz!

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