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  • Class destructor memory handling in C++

    - by wyatt
    What potential memory leaks won't an implicit destructor handle? I know that if you have anything stored on the heap it won't handle it, and if you have a connection to a file or a database, that needs to be handled manually. Is there anything else? What about, say, non-base data types like vectors? Also, in an explicit destructor, need you destroy non-heap variables which would have been destroyed by the implicit, or are they handled automatically? Thanks

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  • What to have in mind when building a AJAX-based webapp

    - by Industrial
    Hi everyone, We're in the first steps of what will be a AJAX-based webapp where information and generated HTML will be sent backwards and forwards with the help of JSON/POST techniques. We're able to get the data out quickly without putting to much load on the database with the help of a cache-layer that features memcached as well as disc-based cache. Besides that - what's essential to have in mind when designing AJAX heavy webapps? Thanks a lot,

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  • Entity Framework .. partial constructor

    - by adamjellyit
    Hi .. I intend to extend the constructors of some of the entities in my Entity Framework (4). However how do I ensure that my constructor is run after the model has run its. i.e. I want to ensure that the the object holds the data from the database before I work on it in my constructor.

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  • Unique DVD info?

    - by acidzombie24
    I was wondering, is there some type of disc ID i can use to search in my database to see if that disc is has been scanned or not? All disc were created by me typically burnt on windows. -edit- I could compare write time and volume label to see if the disc has been scanned but i notice if i put in certain commercial disc that fields are blank or wrong causing many false positives (i once had the time set to the future, i dont know if people want to archive the contents of files on a commercial disc in my app).

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  • How do I parse an HTML website using Perl?

    - by Nano HE
    Could you please give me some suggestions on how to parse HTML in Perl? I plan to parse the keywords(including URL links) and save them to a MySQL database. I am using Windows XP. Also, do I first need to download some website pages to the local hard drive with some offline Explorer tool? If I do, could you point me to a good download tool?

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  • ByPassing Google App Engine SDK to allow black listed classes

    - by ivanceras
    Is there a way to circumbent google app engine sdk to allow the usage of classes that are not present in the GAE JRE white list? I know the app that I would be building will not run in appspot, but at least in my development server, I need to access a postgresql database(java.net.socket.*) and generate some files(java.io.FileWriter) in my development server.

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  • Producing dynamically generated range names in Excel using c#

    - by Matey
    What is the best way to produce several tables of unknown size on the same worksheet? Values will be pulled from an oracle database and are used as values on several tables. Is it possible to create dynamic named ranges or is some other method desirable? I have some experience with c# but do not have access to VSTO 2005. Any help or suggestions would be greatly appreciated. I am willing to explain the problem further if requested.

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  • iphone scrolling ticker example?

    - by tbacos
    I'm looking at adding a user comment ticker to my iPhone/iPad polling app (Show of Hands). The comments would obviously need to be pulled from a central web source - either a database or perhaps even simple flat files. The ticker would also need to support basic controls (speed, pause, etc.) Can anyone that had tried doing something like this point me to your work and/or pass along any implemetation ideas? Thanks! -tony

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  • Parameter has no value

    - by Simon
    string queryString = "SELECT SUM(skupaj_kalorij)as Skupaj_Kalorij " + "FROM (obroki_save LEFT JOIN users ON obroki_save.ID_uporabnika=users.ID)" + "WHERE users.ID= " + a.ToString() + " AND obroki_save.datum =?"; using (OleDbCommand cmd = new OleDbCommand(queryString,database)) { cmd.Parameters.Add("@datum", OleDbType.Char).Value = DateTime.Now.ToShortDateString(); } Why doesn't the parameter datum get the date value? (the value of at least one complex parameter has not been determined )

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  • Displaying Longitude and Latitude values stored in a SQLite db as a Route on a MapView in Android (N

    - by LordSnoutimus
    I am currently in the process of creating an application that records current location of a mobile device in intervals, displaying the route as a coloured line on the device in real-time. At the same time the application is storing the longitude and latitude in a SQLite database as I want the user to be able to bring up that specific route again. The route has a primary key and each waypoint is linked to that route by a foreign key. What would be the easiest way to display the saved route on the map?.

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  • i tried to implement tde in sql2008...n got the error below.....plz help me to resolve...

    - by mahima
    while using USE mssqltips_tde; CREATE DATABASE ENCRYPTION KEY with ALGORITHM = AES_256 ENCRYPTION BY SERVER CERTIFICATE TDECert GO getting error Msg 156, Level 15, State 1, Line 2 Incorrect syntax near the keyword 'KEY'. Msg 319, Level 15, State 1, Line 3 Incorrect syntax near the keyword 'with'. If this statement is a common table expression or an xmlnamespaces clause, the previous statement must be terminated with a semicolon. please help in resolving the same as i need to implement Encryption on my DB

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  • Oracle for the SQL Server DBA guides?

    - by MattK
    I am looking for a reference for a SQL Server DBA who has to come up to speed on basic Oracle 11 DBA tasks: backup, recovery, user administration, etc. There seems to be some material on the web for the reverse: Oracle - SQL Server, but the only potentially useful resource I have found in a few searches is yet to be published: http://www.amazon.com/Oracle-Database-Administration-Microsoft-Osborne/dp/0071744312 Can anyone provide references to something currently available?

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  • How to kill locked mysql queries

    - by jcure
    Hi, I am creating and testing a mysql join query but each time so far it causes the database tables to lockup and the site hangs. I have to then call the host and they kill the locked queries. Is this something I can do from phpmyadmin so not to bother them while I tweak the script to work? Thanks for any reply.

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  • How can I tell when a MySQL table was last updated?

    - by RaGE
    In the footer of my page, I would like to add something like "last updated the xx/xx/200x"; with this date being the last time a certain mySQL table has been updated. What is the best way to do that ? Is there a function to retrieve the date ? Should I make an access to the database everytime my footer is displayed ?

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  • PRoblems with encondig in ASP.MVC

    - by George
    Hello experts! I'm having a weird issue here. I have a bunch of Views, in which i have characters like this: é, á, ó, etc. In one of my views I can fetch data from the database with accents just fine, but in another one I simply get the "weird" characters :P WHat can i be doing wrong? Do i need to configure something in order to this work? Thanks!

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  • Why does MS SQL Mgmt Studio Express keep forgetting my passwords?

    - by Ryan
    I have about had it with this tool, I check the save password box at the login dialogue but it just doesn't work. Sometimes it will for a few days, and then the password will just be gone. Nearly every time I load this thing up I have to track down the password again and type it in. Is there some password rule in the database that would be causing this? This is driving me absolutely crazy.

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  • My login controller doesn't work. Problem with fetching username.

    - by misterwebz
    Currently my login controller doesn't work because i can't seem to fetch the username and password. I'm currently using something like this: form_username = str(request.params.get('username')) db_user = meta.Session.query(User).filter_by(username=form_username) if db_user is None: return redirect('auth/error') No matter which username is use, db_user always returns True and thus never goes to auth/error. I used the shell to play with this and i was able establish a connection with the database, so i'm not sure what i'm doing wrong here.

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  • Implementing a very simple 'Wine Rating System' in Haskell

    - by Alex N
    Hello, I have just started learning Haskell and have got stumped on how to add a rating to a custom data type. The data type I'm using has a name, a year and a tuple (userName and their rating), it looks like: data Wine = Wine String Int [Rating] deriving (Eq,Ord,Show,Read) type Rating = (String, Int) I wanted to allow a user to rate a given wine from a database, stored as [Wine] but cant figure out how to to it. Any pointers or suggestions would be greatly appreciated! Thanks.

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