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  • Help with data retrieval MACRO

    - by Andrei Ciobanu
    Hello, given the following structure: struct nmslist_elem_s { nmptr data; struct nmslist_elem_s *next; }; typedef struct nmslist_elem_s nmslist_elem; Where: typedef void* nmptr; Is it possible to write a MACRO that retrieves the data from the element and cast it to the right type: MACRO(type, element) that expands to *((type*)element->data). For example for int, i would need something like this: *((int*)(element->data)) .

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  • i need help in OCR

    - by miplz
    Hi, i need create a program in VB using OCR, but i cant find any example of the coding. can anyone tell me where to find the coding or anyone have the coding.please help me. Thank you

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  • Help With LINQ: Mixed Joins and Specifying Default Values

    - by Corey O.
    I am trying to figure out how to do a mixed-join in LINQ with specific access to 2 LINQ objects. Here is an example of how the actual TSQL query might look: SELECT * FROM [User] AS [a] INNER JOIN [GroupUser] AS [b] ON [a].[UserID] = [b].[UserID] INNER JOIN [Group] AS [c] ON [b].[GroupID] = [c].[GroupID] LEFT JOIN [GroupEntries] AS [d] ON [a].[GroupID] = [d].[GroupID] WHERE [a].[UserID] = @UserID At the end, basically what I would like is an enumerable object full of GroupEntry objects. What am interested is the last two tables/objects in this query. I will be displaying Groups as a group header, and all of the Entries underneath their group heading. If there are no entries for a group, I still want to see that group as a header without any entries. Here's what I have so far: So from that I'd like to make a function: public void DisplayEntriesByUser(int user_id) { MyDataContext db = new MyDataContext(); IEnumberable<GroupEntries> entries = ( from user in db.Users where user.UserID == user_id join group_user in db.GroupUsers on user.UserID = group_user.UserID into a from join1 in a join group in db.Groups on join1.GroupID equals group.GroupID into b from join2 in b join entry in db.Entries.DefaultIfEmpty() on join2.GroupID equals entry.GroupID select entry ); Group last_group_id = 0; foreach(GroupEntry entry in entries) { if (last_group_id == 0 || entry.GroupID != last_group_id) { last_group_id = entry.GroupID; System.Console.WriteLine("---{0}---", entry.Group.GroupName.ToString().ToUpper()); } if (entry.EntryID) { System.Console.WriteLine(" {0}: {1}", entry.Title, entry.Text); } } } The example above does not work quite as expected. There are 2 problems that I have not been able to solve: I still seem to be getting an INNER JOIN instead of a LEFT JOIN on the last join. I am not getting any empty results, so groups without entries do not appear. I need to figure out a way so that I can fill in the default values for blank sets of entries. That is, if there is a group without an entry, I would like to have a mostly blank entry returned, except that I'd want the EntryID to be null or 0, the GroupID to be that of of the empty group that it represents, and I'd need a handle on the entry.Group object (i.e. it's parent, empty Group object). Any help on this would be greatly appreciated. Note: Table names and real-world representation were derived purely for this example, but their relations simplify what I'm trying to do.

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  • Why do we need to use ConvertBack in IValue Converter

    - by Subhen
    Hi, I am not sure Why we need to use I ConvertBack method in IValueConverter. In the Convert method itself we do the conversion and return the updated value to be bound in our control. So in which Scenario we should use Convertback. I know this question is very basic but just wanted to make the fundamentals clear. Thanks a lot for your help and suggestions. Thanks, Subhen

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  • please help me construct this MYSQL Query (date / time)

    - by sebb
    Hi there i would like to construct a query that fetches results that occurred between NOW and 15 minutes ago, im getting a mysql error when I try the following , can you help me? thanks SELECT * WHERE user_id = '000' AND date_time < now( ) AND date_time > DATE_SUB( now( ) , INTERVAL 15 MINUTE)

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  • Application in which I need Auto-update just like Gmail inbox,calendar Face-Book etc

    - by Dhaval dave
    I have made application in which I have kept calendar,now I need that if admin changes his calendar and if it is affected to user and if that user is currently looking that calendar then whatever changes Admin has done that should reflect to user without refreshing the page, just like when email comes to Gmail then without refreshing we can see the inbox marked as unread... SO to implement that what should I do? I am using J-query for user interface and Python as back-end?????

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  • image magick please help he

    - by Libi
    system(' convert -size 320x100 xc:lightblue -font Candice -pointsize 72 \ -fill navy -annotate +25+65 \'Anthony\' \ -distort Arc 120 -trim +repage \ -bordercolor lightblue -border 10 font_arc.jpg '); curving text like arc This code is not working please help me

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  • Rhino Mocks - Do we really need stubs?

    - by Marcelo Oliveira
    If it's possible to change mock behaviour in Rhino Mocks using mock.Stub().Return(), why do we need Stubs anyway? What do we lose by always using MockRepository.GenerateMock()? One big benefit of using Mocks instead of Stubs is that we will be able to reuse the same instance among all the tests keeping them cleaner and straightforward. The moq framework works in a similar way... we don't have different objects for mocks and stubs. (please, don't answer with a link to Fowler's "Mocks aren't stubs" article)

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  • Do i need to dispose of MySqlCommand?

    - by acidzombie24
    I find it incredibly annoying to write a using statement on every one of my queries (which require its own command or write parameters.clear()) which sometimes require declaring variables outside of the using block. Its so incredibly annoying and looks much dirtier compared to the version without disposing the object. Do i need to dispose of it? what happens if i dont? I do know its good practice to dispose of an object when it has that interface.

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  • c# calculation help

    - by Jonas B
    Hi, I'm pretty useless when it comes to math and I have a problem I need help with. This has nothing to do with schoolwork, it's in fact about alcatel and the ticketextractor. I have two values that needs to be calculated in a c# application according to a formula specified in their documentation: "The global callid is equal to: callid1 multiplied by 2 power 32 plus callid2" As I said I'm not big with maths so that statement says nothing to me. If anyone know how to calculate it i'd appreciate it! Thanks

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  • Need help converting SQL to EF4 please

    - by Ken Eldridge
    I need help converting this SQL statement, into EF4: Select Posts.PostID, Post, Comment from Posts left join Comments on posts.PostID = Comments.PostID Where CommentID not in ( Select PostID from Votes where VoteTypeID = 4 --4 = flagged comment type ) In my database, the Votes table stores either the PostID of reported posts, or CommentID of reported comments in the column Votes.PostID Thanks in advance!

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  • can any one help me using C#

    - by sama
    i have a form that has a textbox and label i want to get the time of the first character entered in the textbox then if user enter more than ten charcters then the time between the first charcter enterd and the tenth charcter entered and dispay it in tle label can any one help me please using c#

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  • Help with psudo classes in CSS

    - by Anil Namde
    <a class="success" href="javascript:void(0)"></a> //CSS for setting background for above link a.success:hover{ //set background image } What my intent is to change the class of link on server side based on success/fail and set icon for the link accordingly. But above CSS is not working as expected. Can someone plz help with this.

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  • help with query in access

    - by Gold
    hi i have 2 tables Table A - code|name Table B - barcode|name table B has full barcode and name, Table A has only code i need to run update query that fill name in Table A i try somthing like: update A set name = (select top 1 Name from B where B.Code = mid(A.Barcode,1,8)) but it dos't work

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  • Please help on multiple match replacement

    - by duenguyen
    I have a perl code: my $s = "The+quick+brown+fox+jumps+over+the+lazy+dog+that+is+my+dog"; what I want is to replace every + with space and dog with cat i have this regular expression $s =~ s/+(.*)dog/ ${1}cat/g; But it only match first occurrence of + and last dog. Please help

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  • Chrome extension help

    - by Pasta
    I want to notify an user using Chrome browser. I need something powerful like changing the Chrome skin colour, highlighting things or at the least like this extension putting an icon on the address bar https://chrome.google.com/extensions/detail/jhejngphiacapbgllhagbpdkkdieeaej Can someone please help?

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