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Articles indexed in March 2010

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  • Producer Consumer Issue with Core Data

    - by Mugunth Kumar
    I've a Core Data application. In the producer thread, I pull data from a web service and store it in my object and call save. My consumer object is a table view controller that displays the same. However, the app crashes and I get NSFetchedResultsController Error: expected to find object (entity: FeedEntry; id: 0xf46f40 ; data: ) in section (null) for deletion on the console. When I debug it, everything works fine. So I understood that it's like a race issue. How is these kind of problem solved? What's the best way to design a producer-consumer app with core-data?

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  • How to display mysql records as preselected checkboxes?

    - by Jennifer
    I have a table column called post_tags within a table called posts where assigned tags are stored separated by the @ symbol. I also have a table called tags where all tag names are stored. I would like to design my database in a more normalized way but for the purpose I am trying to achieve this is the easiest option. Anyway, I want to display on the screen all the entries from the tags table as checkboxes, so I do: $query = mysql_query("SELECT * FROM tags ORDER BY name"); while ($row = mysql_fetch_assoc($query)) { $tag = $row['name']; echo "<input type='checkbox' name='tags[]' value='$tag' />\n"; } Next I want to have the tags that are assigned to a particular post be preselected. For example, if I have a post with the following in it's post_tags column: party@beaches@dolphins@ I want the "party", "beaches" and "dolphin" checkboxes to be checked by default (while the checkboxes for the other options are unchecked). How can this be done?

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  • How to show a message box in an ASP.NET page?

    - by Praveen
    As I was a Windows programmer it was so easy to show a message box on a form. But on an ASP.NET page I don't know how can I show it? Actually I have some condition and based on that I want to show a message box to the user to get his/her response and based on that response I want to continue. For example I want to ask the user "Do you want to continue?" with two buttons "Yes" & "No".

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  • Need to check uptime on a large file being hosted

    - by trustfundbaby
    I have a dynamically generated rss feed that is about 150M in size (don't ask) The problem is that it keeps crapping out sporadically and there is no way to monitor it without downloading the entire feed to get a 200 status. Pingdom times out on it and returns a 'down' error. So my question is, how do I check that this thing is up and running

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  • Java constructor with large arguments or Java bean getter/setter approach

    - by deelo55
    Hi, I can't decide which approach is better for creating objects with a large number of fields (10+) (all mandatory) the constructor approach of the getter/setter. Constructor at least you enforce that all the fields are set. Java Beans easier to see which variables are being set instead of a huge list. The builder pattern DOES NOT seem suitable here as all the fields are mandatory and the builder requires you put all mandatory parameters in the builder constructor. Thanks, D

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  • How to eliminate Unhandled Exception dialog produced by 3rd party application

    - by Tappen
    I'm working with a 3rd party executable that I can't recompile (vendor is no longer available). It was originally written under .Net 1.1 but seems to work fine under later versions as well. I launch it using Process.Start from my own application (I've tried p/invoke CreateProcess as well with the same results so that's not relevant) Unfortunately this 3rd party app now throws an unhandled exception as it exits. The Microsoft dialog box has a title like "Exception thrown from v2.0 ... Broadcast Window" with the version number relating to the version of .Net it's running under (I can use a .exe.config file to target different .Net versions, doesn't help). The unhandled exception dialog box on exit doesn't cause any real problems, but is troubling to my users who have to click OK to dismiss it every time. Is there any way (a config file option perhaps) to disable this dialog from showing for an app I don't have the source code to? I've considered loading it in a new AppDomain which would give me access to the UnhandledException event but there's no indication I could change the appearence of the dialog. Maybe someone knows what causes the exception and I can fix this some other way?

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  • How to get variable value from inside a stored procedure in DB2?

    - by Sylvia
    This seems like it should be very easy...anyway, it is in MS SQL Server In a DB2 stored procedure, how can I just get the value of a variable? Say I have the following stored procedure: CREATE PROCEDURE etl.TestABC( ) LANGUAGE SQL BEGIN declare Stmt varchar(2048); set Stmt = 'this is a test'; -- print Stmt; -- select Stmt; return 0; END @ I'd like to print out the value of Stmt after I set it. Print doesn't work, select doesn't work. Somebody said I have to insert it to a table first, and then get it after I run the stored procedure. Is this really necessary? Thanks, Sylvia EDIT: I should have made clearer that I want to see the value of Stmt each time after I set it, and I may need to set it multiple times within the same stored procedure.

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  • git: having 2 push/pull repos in sync (or 1 push/pull and 1 pull in sync)

    - by xavjuan
    Hello, We work on multiple geographically seperate sites. Today I have our git clones all live on one site A. Then users from site B have to ssh over to do a git clone or to push in changes. These are bare repos where the update is through pushes. Ideally, for git clone/push performance, I'd like to limit having to go over ssh. I'd like to have a copy of git repo X live on site A and site B... and have some syncing mechanism between them. OR to have X live on both sites, but only allow pushing to A (and have that setup correctly at clone time on B) I'm worried about the case where someone on site A pushes changes to the repo at site A at the same time that someone on site B pushes a truely conflicting change to the repo at site B. Is there some 'sync'ing solution built into git for distributed open repos like this? Or a way to have a clone from X set the origin/parent to the X from the other site? thanks, -John

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  • Stealing the contents of another application's tree view

    - by User1
    I have an application with a very large TreeView control in Java. I want to get the contents of the tree control in a list (just strings not a JList) of XPath-like elements of leaves only. Here's an example root |-Item1 |-Item1.1 |-Item1.1.1 (leaf) |-Item1.2 (leaf) |-Item2 |-Item2.1 (leaf) Would output: /Item1/Item1.1/Item1.1.1 /Item1/Item1.2 /Item2/Item2.1 I don't have any source code or anything handy like that. Is there I tool I can use to dig into the Window item itself and pull out this data? I don't mind if there are a few post-processing steps because typing it in by hand is my only other option.

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  • 'The default schema does not exist' on deploy of SQL CLR assembly onto SQL Server 2008

    - by abatishchev
    I'm deploying an example SQL CLR stored procedure which has a SQL CLR type as parameter using Visual Studio 2008 and menu Project -> Deploy. public partial class StoredProcedures { [Microsoft.SqlServer.Server.SqlProcedure] public static void TakeTariff(TariffInfo tariffInfo) { } } public class TariffInfo { public SqlDecimal Amount { get; private set; } } but getting next strange error: The default schema does not exist. How can I fix that? My user was created this way: CREATE USER myUser FOR LOGIN myLogin_mod WITH DEFAULT_SCHEMA = mySchema

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  • Oracle : Identifying duplicates in a table without index

    - by user288031
    When I try to create a unique index on a large table, I get a unique contraint error. The unique index in this case is a composite key of 4 columns. Is there an efficient way to identify the duplicates other than : select col1, col2, col3, col4, count() from Table1 group by col1, col2, col3, col4 having count() 1 The explain plan above shows full table scan with extremely high cost, and just want to find if there is another way. Thanks !

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  • Using Fortran to call C++ Functions

    - by Dane Larsen
    I'm trying to get some FORTRAN code to call a couple c++ functions that I wrote (c_tabs_ being one of them). Linking and everything works just fine, as long as I'm calling functions that don't belong to a class. My problem is that the functions I want the FORTRAN code to call belong to a class. I looked at the symbol table using nm and the function name is something ugly like this: 00000000 T _ZN9Interface7c_tabs_Ev FORTRAN won't allow me to call a function by that name, because of the underscore at the beginning, so I'm at a loss. The symbol for c_tabs when it's not in a class is quite simple, and FORTRAN has no problems with it: 00000030 T c_tabs_ Any suggestions? Thanks in advance.

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  • Define a method that is a closure in Ruby

    - by J. Pablo Fernández
    I'm re-defining a method in an object in ruby and I need the new method to be a closure. For example: def mess_it_up(o) x = "blah blah" def o.to_s puts x # Wrong! x doesn't exists here, a method is not a closure end end Now if I define a Proc, it is a closure: def mess_it_up(o) x = "blah blah" xp = Proc.new {|| puts x # This works end # but how do I set it to o.to_s. def o.to_s xp.call # same problem as before end end Any ideas how to do it? Thanks.

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  • How to balance number of ratings versus the ratings themselves?

    - by zneak
    Hello guys, For a school project, we'll have to implement a ranking system. However, we figured that a dumb rank average would suck: something that one user ranked 5 stars would have a better average that something 188 users ranked 4 stars, and that's just stupid. So I'm wondering if any of you have an example algorithm of "smart" ranking. It only needs to take in account the rankings given and the number of rankings. Thanks!

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  • Opening AFOpenFlowView already in landscape mode

    - by justin
    I'm using the open source CoverFlow replacement from here: http://fajkowski.com/blog/2009/08/02/openflow-a-coverflow-api-replacement-for-the-iphone/ When I detect that a certain view has gone from portrait to landscape mode, I instantiate an AFCoverFlowView and push it onto the navigation stack. If I do so in response to (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation The cover flow view comes up as though the phone were still in portrait mode. If I push the view in response to (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation it works perfectly - the view comes up in landscape mode with the phone in landscape mode Unfortunately, the device doesn't reliable get willRotateToInterfaceOrientation messages. I have tried making sure that [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; is in loadView but that doesn't help with the notificiations. So, my questions are: Is there a way to reliably get willRotateToInterfactOrientation? if not How do I instruct AFCoverFlowView to come up in landscape mode (if the device is already in landscape mode)

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  • Jabber/XMPP Client for BlackBerry

    - by SpaceManSpiff
    Hello All, I am looking for a Jabber/XMPP client for BlackBerry that I can use with our OpenFire server. It needs to be able to use the Secure connection from OpenFire either the SSL or TLS. It needs to be a direct connection to our server, no 3rd party sever in the middle It needs to be free. I have tested and JiveTalk works great and we'll use it if I can't find another one, we're just trying to find a free one. Thanks

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  • Mix metrics for March 22, 2010

    - by tim.bonnemann
    Mix hit another major milestone this past week, surpassing 60,000 registered members. Registered Mix users (weekly growth) 60,662 (+0.8%) Active users (percent of total) Last 30 days: 4,571 (7.5%) Last 60 days: 8,945 (14.7%) Last 90 days: 11,479 (18.9%) Traffic (30-day) Visits: 12,371 Page views: 70,896 Twitter Followers: 3,117 List mentions: 146 User-generated content (30-day) New ideas: 32 New questions: 74 New comments: 378 Groups There are currently 1,394 Mix groups (requires login).

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  • Switching to WPF, the best use of time at Visual Studio Launch 2010

    - by Stewbob
    Yes, this is a programming-related question, if a little indirectly (that's why I marked it Community Wiki right away). For better or worse, I am switching from Winforms to WPF in April. I am also going to be in attendance at the Visual Studio Launch in Las Vegas. I have a real need to get up to speed quickly in WPF, so my question is: What sessions are going to be the best use of my time? I've got some picked out already, but I'm looking for some more advice on how to wade through all the marketing fluff and get some real educational value out of these few days. I have not been to one of these events before, so I don't really know how much is marketing hype, and how much is solid content. A couple of the workshops look interesting (VPR02 and VPS02), but I don't know enough about the actual content of these to justify the extra expense right now. Any thoughts there would be appreciated. And yes, I do have WPF learning planned other than just these few days in Vegas, but since I'm going to be there anyway, I want to learn as much as I can in the time available.

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  • Jquery selector question

    - by fizzer
    Hi, I have a working selector but I just wondered whether there was another way I could write it. Here's the html structure: THIS IS TEXT I WANT TO SELECT item 1 item 2 item 3 I have a click event attached to the nested listitems. In the click event I am trying to select the anchor tag. I have used the follwing selector: $(this).parents('li').children('a') Is this the most efficient way of selecting the anchor tag?

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