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  • Resources for learning about Threading

    - by Incubuss
    I've spent the last year learning and using Java in university but we didn't do much (read: anything) in terms of Threading. We do some next year but I'm hopeful I'll be able to get a head start over the summer. What are the best resources for learning about and getting to grips with Threading?

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  • Validate a URL string in my iphone app

    - by Derek
    Hi, I am getting really frustrated and I cant seem to check if the user has entered a valid url or not. This is what I have tried: NSString *str = [NSString stringWithFormat:@"%@", [myurl.text stringByAddinPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSURL *aurl = [NSURL URLWithString:urlStr[; if(aurl == nil){ //Invalid url }

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  • Why doesn't SQL DISTINCT work with ORDER BY CAST?

    - by Tommy
    Including DISTINCT to an SQL query that also uses ORDER BY CAST(thecolumn AS int) as shown here seems to remove that sorting functionality. Any reason these cant work together? (Using sqlite with the C api) Thanks. EDIT: Started with - sprintf(sql, "SELECT DISTINCT rowX FROM TableX Order By Cast(rowX As int) LIMIT 150 OFFSET %s;", Offset); rowX is Type CHAR(5)

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  • Access Denied when using popen - Python

    - by RadiantHex
    Hi folks, I'm using popen in order to send a few commands within a Django app. Problem is that I'm getting [Error 5] Access Denied, apparently I have no access to cmd.exe, which popen seems to use. WindowsError at /test/cmd/ [Error 5] Access is denied: 'C:\WINDOWS\system32\cmd.exe /c dir' I reckon this is because the app sits behind a web server which has limited privileges. Is there anything we can do about it? Help would be awesome!

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  • How to generate a report for particular XHTML tag/attributes ?

    - by jitendra
    I wan to check whole site's image's ALT text. I want to get a report of What is written in all text or ALT is defined or not from all images being used on whole site in every page. Is it possible to get report like this. after getting report i will put ALT or is ALT is already added but blank then will write description text. Other in a big site it will take huge time to go and check each page

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  • Refactored App Engine project - now Eclipse is infinitely building the project without end

    - by Yog
    I renamed some files in my App Engine project and refactored code, changing references to variables. Everything seemed fine until I changed the references in the web.xml for the project. Then I got a complaint about some error with the DataNucleus enhancer and now the project build process is stuck at 22%. I tried stopping Eclipse and restarting but the build process keeps hanging. Any tips on how to clean out whatever it's getting stuck on?

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  • Resources & Frameworks for mobile development (iphone,android) using HTML5

    - by Pasta
    I am looking for resources to develop HTML5 apps for iphone primarily. Are their frameworks and tools that I can use to get started? I am looking for: Javascript frameworks that help with UI layout Touch based controls for phones Articles on iphone development, best practices, etc. I searched stackoverflow and was not able to come up with a good list of resources. I am looking for examples like these http://jqtouch.com/

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  • Enforce "spaces" or "tabs" only in python files ?

    - by edomaur
    In Python, is there a mean to enforce the use of spaces or tabs indentation with a per file basis ? Well, perhaps "enforce" is too strong, its more like "recommands". I keep getting files with mixed indentation and this is annoying... (to say the least) Python itself can tell when there is a problem, but I am searching something to do that at the editor level, like it exists for the charset.

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  • rake db:migrate not executing new migrations

    - by Matt H
    Hi guys. I'm trying to add some columns to an existing table, so I generated a migration that did so. When I run db:migrate the new migration isn't run and the table isn't updated. I've had this problem many times before, and it's getting bloody annoying. Output from rake db:migrate $ rake db:migrate --trace (in /Users/one/app) ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:migrate ** Invoke db:schema:dump (first_time) ** Invoke environment ** Execute db:schema:dump

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  • Opening Dot File with OpenXML

    - by OpenXML123
    Hi, I need to work on opening a DOT (word document template) file, replace the fillers and save it as Document file. On opening DOT file I am getting "Document File is Corrupted". Is it possible to work with DOT file using OpenXML.

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  • Can I have two apps under same (custom)Tab

    - by simple
    As I am stumbling through Facebook App Dev. I am getting more and more close to a bit sophisticated questions, bu still I am at newbie level. Can I have custom Tab and inside that tab two different apps ? ex. (the slideshow and top 5 news(RSS feed))

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  • Genetic/Evolutionary algorithms and local minima/maxima problem

    - by el.gringogrande
    I have run across several posts and articles that suggests using things like simulated annealing to avoid the local minima/maxima problem. I don't understand why this would be necessary if you started out with a sufficiently large random population. Is it just another check to insure that the initial population was, in fact, sufficiently large and random? Or are those techniques just an alternative to producing a "good" initial population?

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  • iPhone - didPopItem ? Is this supposed to work?

    - by Chris
    I have a simple UITableView setup. I am trying to use - (void)navigationBar:(UINavigationBar *)navigationBar didPopItem:(UINavigationItem *)item I put a NSLog inside this method, but it is apparently not getting called when I "pop" back to the screen. I am not finding much information about this function, has it been replaced?

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  • ASP.NET FaceBook App Development -

    - by leen3o
    I have downloaded both samples for the Facebook Developer Kit from Codeplex and Facebook.NET followed both tutorials down to the word - But as soon as I browse to me app on Facebook I am getting the following error for BOTH versions? API Error Code: 100 API Error Description: Invalid parameter Error Message: Requires valid next URL. Anyone else had this problem? I'm struggling to find an answer to what the error actually means? Especially as the starts kits are supposed to work out the box?

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  • Couldn't get last insert identifier symfony sql server through ODBC

    - by JaSk
    Im getting that error every time I try to add a new set of data to my sql server 2008 database. I'm running windows 7 on my development machine. my current config is: all: doctrine: class: sfDoctrineDatabase param: dsn: 'odbc:Driver={SQL Server Native Client 10.0};Server=localhost;database=jobeet;' username: sa password: **** thanks to every one.

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  • Spring - singleton problem - No bean named '....' found

    - by lisak
    Hey, I can't figure out what is wrong with this beans definition. I'm getting this error http://pastebin.com/ecn5SWLa . Especially the 14th log message is interesting. This is my app-context file http://pastebin.com/dreubpRY httpParams is a singleton which is set up in httpParamBean and then used by tsccManager and httpClient. The various depends-on settings is a result of my effort to figure it out.

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  • QT how to select and change all coulmns of QStandardItemModel

    - by user63898
    Hello im trying to programmatic select and change the background color of all the columns of QStandardItemModel i have this that paint me only the first column out of 5 that the row contains // getting the rows QStandardItem* standardItem = m_model->item(i); //set the color i like all the row to be painted standardItem->setBackground(QBrush(QColor(255,0,0)));

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  • Pylons error handling

    - by TJ Huffington
    Hello, I am just getting started with Pylons and am confused as to how to account for exceptions. What is the proper way to error check user input (ensure a correct email address, check that it doesn't yet exist in the database, etc ...)? Should these checks go inside the model classes or somewhere else? Sample code would be great.

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  • How can I prevent a double submit with jQuery or Javascript?

    - by kielie
    Hi guys, I keep getting duplicate entries in my database because of impatient users clicking the submit button multiple times. I googled and googled and found a few scripts, but none of them seem to be sufficient. How can I prevent these duplicate entries from occurring using javascript or preferably jQuery? Thanx in advance!

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