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  • Please see following code and answer

    - by user323422
    template <class T> class _cExplicitInstation { public: void show1(T c) { double d =10.02 ; std::cout<<c; } void show2(T d) { std::cout<<d; } }; template _cExplicitInstation<char>; template void _cExplicitInstation<int>::show1(int c); int main() { _cExplicitInstation<char> abc; _cExplicitInstation<int>().show2(10);// it should show error as i have // explicitly declare for show1() function but its working // can u tell why? }

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  • QueryString problem in .aspx - prints out nothing

    - by user321256
    I need to print out the querystring value "?type=xxx" inside my .aspx-page, why doesn't this work: <%= Request.QueryString("type") %> While this does: <%= Request.QueryString(0) %> The first prints out nothing, the second one prints out the value as expected, but it isn't always the first value I want... Any ideas?

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  • Should .net comments start with a capital letter and end with a period?

    - by Hamish Grubijan
    Depending on the feedback I get, I might raise this "standard" with my colleagues. This might become a custom StyleCop rule. is there one written already? So, Stylecop already dictates this for summary, param, and return documentation tags. Do you think it makes sense to demand the same from comments? On related note: if a comment is already long, then should it be written as a proper sentence? For example (perhaps I tried too hard to illustrate a bad comment): //if exception quit vs. // If an exception occurred, then quit. If figured - most of the time, if one bothers to write a comment, then it might as well be informative. Consider these two samples: //if exception quit if (exc != null) { Application.Exit(-1); } and // If an exception occurred, then quit. if (exc != null) { Application.Exit(-1); } Arguably, one does not need a comment at all, but since one is provided, I would think that the second one is better. Please back up your opinion. Do you have a good reference for the art of commenting, particularly if it relates to .Net? Thanks.

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  • What is wrong in this post code

    - by nabinc
    $.post( "login.php", { user: id, pass: ps, action: 'd56b699830e77ba53855679cb1d252da" }, function(data){ var status = ($.evalJSON(data).oc); msgbox($.evalJSON(data).title,$.evalJSON(data).msg,status); if(status==1) { window.location = $.evalJSON(data).page; } } );

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  • whats wrong with this piece of code for saving contacts

    - by Shadow
    Hi, i am using the latest Nokia Qt SDK. i have tried to add the contacts, its not getting added.. what is missing here.. // Construct contact manager for default contact backend QContactManager* cm = new QContactManager("simulator"); // QContactManager* cm = new QContactManager("memory"); // i tried this, its also not working // Create example contact QContact example; // Add contact name QContactName name; name.setFirstName("John"); name.setLastName("Doe"); example.saveDetail(&name); // Add contact email address //QContactEmailAddress email; // email.setContexts(QContactDetail::ContextHome); //email.setEmailAddress(“[email protected]”); // example.saveDetail(&email); // Finally, save the contact details cm->saveContact(&example); delete cm; Thanks

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  • Different meaning in the mysql code?

    - by Emre Saracoglu
    $result=mysql_query("select * from dosyabegeni where veri_id='" . get_custom_field('dwcode') . "'"); Not Working It says the number and the screen, but the application does not work veri_id='" . get_custom_field('dwcode') . "'"); veri_id='" . echo get_custom_field('dwcode') . "'"); Working veri_id='HelloTest'"); veri_id='1234567890'"); veri_id='" . $_GET['test'] . "'"); Main Codes <?php include('/home/emre2010/public_html/EntegreOz/DosyaBegeni/config.php'); $result=mysql_query("select * from dosyabegeni where veri_id='" .get_custom_field('dwcode') . "'"); while($row = mysql_fetch_array($result)) { $sira_id=$row['sira_id']; $veri_id=$row['veri_id']; $begeni=$row['begeni']; ?> <div class="reviewbox"> <div class="summarywrap"> <div class="summarywrapinner"> <div class="summary"> <div class="reviewsection"><div class="rating points"> <a href="#" class="begeni" id="<?php echo $sira_id; ?>"> <span style="color:#fff;" align="center"> <?php echo $begeni; ?> </span> </a> <p class="ratingtext">completed!</p></div> </div><div class="clear"></div> <div class="clear"></div> </div> <div class="ratingsummary"></div> <div class="clear"></div> </div> <div class="clear"></div> </div> What's the problem?

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  • C++ coverage tool that WORKS?!

    - by Poni
    Been searching for a good coverage tool for a while now. I'm with VC++ 2008. Tried already: NCover, PureCoverage, PartCover and a few others I can't remember their names. None works! Not even with a very basic console application that does almost nothing. Tried to get an evaluation copy from BullsEye and few more others - not only that they require you to ask for it (no automatic process), they don't even answer after you request AND after you ask what's going on, through the support mail. So the question is: Is there any tool, which I can immediately download an evaluation for it, that actually works on VC 2008 projects? Something that will get me going within 10 minutes? It's funny but it seems to be a very non-trivial request in the area of this kind of software.

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  • Style question about existing piece of code (C/C++)

    - by Leif Ericson
    I just hope the following doesn't seem to you like redundant jabber :) Anyway, there is that: for (p = fmt; *p; p++) { if (*p != '%') { putchar(*p); continue; } switch (*++p) { /* Some cases here */ ... } } And I wondered why the writer (Kernighan / Ritchie) used the continue in the if statement. I thought it was for the mere reason that he deemed it would be more elegant than indenting the whole switch under an else statement, what do you think?

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  • authlogic rails question - how to code for an API

    - by phil swenson
    I have authlogic going on my app, but now I need to have an an API. I don't want to establish a session, just want a user to send in data in a json request such as: {"type":"address","password":"mypassword","name":"my notificaiton name goes here","user":"myusername","text":"my interesting stuff goes here"} So questions - 1) is this a decent approach? 2) how do i do the auth inside my rails controller?

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  • How to use tags in iPhone application code ?

    - by srikanth rongali
    I need to access the [indexPath row] outside the tableView method. I need to use it in my own method in same class and other classes also. How can I do it. If the cell in the table view have buttons, By selecting the buttons how can I say which row was selected ? I think of using the tags. But, I do not know much about tags. Thank you.

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  • Best way to update/insert into a table based on a remote table.

    - by martilyo
    I have two very large enterprise tables in an Oracle 10g database. One table keeps the historical information of the other table. The problem is, I'm getting to the point where the records are just too many that my insert update is taking too long and my session is getting killed by the governor. Here's a pseudocode of my update process: sqlsel := 'SELECT col1, col2, col3, sysdate FROM table2@remote_location dpi WHERE (col1, col2, col3) IN ( SELECT col1, col2, col3 FROM table2@remote_location MINUS SELECT DISTINCT col1, col2, col3 FROM table1 mpc WHERE facility = '''||load_facility||''' )'; EXECUTE IMMEDIATE sqlsel BULK COLLECT INTO table1; I've tried the MERGE statement: MERGE INTO table1 t1 USING ( SELECT col1, col2, col3 FROM table2@remote_location ) t2 ON ( t1.col1 = t2.col1 AND t1.col2 = t2.col2 AND t1.col3 = t2.col3 ) WHEN NOT MATCHED THEN INSERT (t1.col1, t1.col2, t1.col3, t1.update_dttm ) VALUES (t2.col1, t2.col2, t2.col3, sysdate ) But there seems to be a confirmed bug on versions prior to Oracle 10.2.0.4 on the merge statement when doing a merge using a remote database. The chance of getting an enterprise upgrade is slim so is there a way to further optimize my first query or write it in another way to have it run best performance wise? Thanks.

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  • my jquery code dont work?

    - by kingdom
    UCCN1003Edit <script type="text/javascript"> $(function(){ $('a.edit').click(function(event){ var change = $(this).parent('div').find('p'); var changeText = change.text(); var wrapper = $(this).parent('div'); var clone = change.clone(true); var changeBox = $(this).parent('div').find('.editBox'); var changeBoxText = changeBox.val(); if($(this).text() == 'Edit'){ wrapper.prepend("<input class='editBox' type='text' value='"+ changeText + "'/>"); wrapper.append("<a href='#' class='save' style='margin-left:10px' >Save</a>"); change.remove(); $(this).text("cancel"); }else if($(this).text()=='cancel'){ wrapper.prepend("<p>" + changeBoxText +"</p>"); $('.editBox').remove(); $('.save').remove(); $(this).text('Edit'); } }); $('.save').click(function(event){ var editBox = $(this).parent('div').find('.editBox'); var editBoxText = editBox.text(); var wrapper = $(this).parent('div'); wrapper.prepand("<p>" + editBoxText + "</p>"); editBox.remove(); $(this).remove(); }); }); </script> My part that work work is $('.save').click(function(event){ var editBox = $(this).parent('div').find('.editBox'); var editBoxText = editBox.text(); var wrapper = $(this).parent('div'); wrapper.prepand("<p>" + editBoxText + "</p>"); editBox.remove(); $(this).remove(); }); where the wrapper wont prepand the p tag and the editBox and the .save wont be remove. i try to add alert("work") in this and it wont alert at all. anyone know why?

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  • Calling managed code from unmanaged win32 assembly dll - crash

    - by JustGreg
    I'm developing a serial port dll in win32 assembly (MASM32). It has its own thread checking multiple events and at a specified buffer treshold it'd notify the managed main application by calling a callback function. It just a call with no arguments/return value. At startup the main application stores the callback function's address by calling a function in the dll: pCallBackFunction dd 0 SetCallBackPointer proc pcb:DWORD mov eax, pcb mov pCallBackFunction, eax call DWORD ptr pCallBackFunction ; verify it immediately ret SetCallBackPointer endp The upper function immediately calls back the managed application callback routine for verification purposes. It is working fine. However, when I place the call instruction to other functions in the dll it crashes the application. It doesn't matter if the call is in a simple function or in the threadproc of the dll. For example: OpenPort proc pn:byte,br:dword, inputbuffersize: dword, outputbuffersize:dword, tresholdsize: dword LOCAL dcb: DCB LOCAL SerialTimeOuts: COMMTIMEOUTS call DWORD ptr pCallBackFunction xor eax, eax mov al, pn mov [com_port+3],al etc. etc. will crash at call DWORD ptr pCallBackFunction always. Since I call SetCallBackPointer first to store a valid address in pCallBackFunction, it should have a valid address. My managed app is written in C# and the relevant part is: public partial class Form1 : Form { public delegate void CallBackDelegate(); public static CallBackDelegate mydelegate; [DllImport("serialport.dll")] private static extern void SetCallBackPointer(CallBackDelegate Delegate); [DllImport("serialport.dll")] public static extern int OpenPort(byte com, uint br, uint inbufsize, uint outbufsize, uint treshsize); public Form1() { InitializeComponent(); mydelegate =new CallBackDelegate(CallbackFunction); SetCallBackPointer(mydelegate); unsafe { int sysstat; int hResult; hResult = OpenPort(Convert.ToByte('5'), 9600, 306, 4, 4); } } public static void CallbackFunction() { MessageBox.Show( "CallBack Function Called by Windows DLL"); } The VS debugger reported that the dll had tried to read/write from/to a protected memory address. But when calling SetCallBackPointer there is no such problem. What am I doing wrong here? Any tips would be great!

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  • Can anybody explain the code

    - by girinie
    class giri{ public static void main(String args[]) { int x = 17; int y = 013; System.out.println("x+y = " + x+y); } } When I run the program I get the output 1711. Can anybody tell me How do I get 1711

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  • Details to log when starting an application

    - by Karl
    To help support and anyone who may use one of my applications I tend to log a few things during the application startup. Currently I log: Start Time App Name App Author App Version App Classpath Current working directory Java vendor Java version Max heap size Taking into consideration this application may be used / supported by a whole host of people can anyone think of any other vital details which we / others should log for good practice?

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  • How does Software/Code actually communicate with Harware?

    - by AbyJames
    My question is: When I press the "Shut down" button in Windows/Linux,the computer shutdowns.How did the command "Shut down" actually make the computer Physically shutdown? To make my point clear: When we kick a ball,there is physical contact between the ball and our leg,for the ball to move.So how is the physical connection achieved between softwares and hardwares?How does plain text of codes make the computer do what it does? (Noob question,I know but it has been irritating me for quite sometime now) -Aby

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  • LINQ to SQL: NOTing a prebuilt expression

    - by ck
    I'm building a library of functions for one of my core L2S classes, all of which return a bool to allow checking for certain situations. Example: Expression<Func<Account, bool>> IsSomethingX = a => a.AccountSupplementary != null && a.AccountSupplementary.SomethingXFlag != null && a.AccountSupplementary.SomethingXFlag.Value; Now to query where this is not true, I CAN'T do this: var myAccounts= context.Accounts .Where(!IsSomethingX); // does not compile However, using the syntax from the PredicateBuilder class, I've come up with this: public static IQueryable<T> WhereNot<T>(this IQueryable<T> items, Expression<Func<T, bool>> expr1) { var invokedExpr = Expression.Invoke(expr1, expr1.Parameters.Cast<Expression>()); return items.Where(Expression.Lambda<Func<T, bool>> (Expression.Not(invokedExpr), expr1.Parameters)); } var myAccounts= context.Accounts .WhereNot(IsSomethingX); // does compile which actually produces the correct SQL. Does this look like a good solution, and is there anything I need to be aware of that might cause me problems in future?

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