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• How can I write a null ASCII character (nul) to a file with a Windows batch script?

  - by Matthew Murdoch

  I'm attempting to write an ASCII null character (nul) to a file from a Windows batch script without success. I initially tried using echo like this: echo <Alt+2+5+6> which seems like it should work (typing <Alt+2+5+6> in the command window does write a null character - or ^@ as it appears), but echo then outputs: More? and hangs until I press <Return>. As an alternative I tried using: copy con tmp.txt >nul <Alt+2+5+6><Ctrl+Z> which does exactly what I need, but only if I type it manually in the command window. If I run it from a batch file it hangs until I press <Ctrl+Z> but even then the output file is created but remains empty. I really want the batch file to stand alone without requiring (for example) a separate file containing a null character which can be copied when needed.

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• Problem With Inserts of multibyte (converted to utf-8) strings in the mysql tables of utf_unicode_ci encoding

  - by user381595

  http://domainsoutlook.com/sandbox/keyword/?s=http://bhaskar.com raw example of my keyword density analyser. Every keyword shows up properly with no problems in unicode conversions etc. Now, When I am adding these words to the database column of a table, the words show up as messed up. http domainsoutlook.com/b/site/bhaskar.com.html For example on this front end page if you see there is a keyword that is shown as a blank but still occurs on the website 8 times. (It isnt empty in the database though). I have checked and there is no problem with mysql_real_escape_String...because the output stays the same before and after the word is gone through mysql_real_escape_String. Another problem was that I wanted to fix my urls for arabic language. They should be showing up as /word-{1st letter of the word}/{whole word}.html but its showing as /word-{whole word}/{1st letter of the word}.html I really need answers for these two questions.

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• iphone dev - how to catch exception 'NSRangeException'

  - by Brian

  In my app I try to scroll a UITableView to the top once after I updated the content of the table. However, under some circumstance, my table is EMPTY. So I got the following exception: Terminating app due to uncaught exception 'NSRangeException', reason: '-[UITableView scrollToRowAtIndexPath:atScrollPosition:animated:]: row (0) beyond bounds (0) for section (0).' how can I catch this exception? I tried NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0]; if (indexPath != nil) { [EventTable scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES]; } but it doesn't catch the exception because indexPath is not nil.

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• some verd problems in qt

  - by prabhakaran

  I am very new to qt, So whatever I facing is either errors or problems. Here goes some of them, 1)Just try to install it in VisualStudio, you will got enough for the day. 2)After you installed it as a separate qt(without embedding it inside visual studio).Open a c++ file in qt, = then you won't get any option to compile it. 3)Create a empty qt4 project like below #include<iostream> using namespace std; int main(int a,char * argv[]) { } Then build it, you will get a error like this C:\qt-greenhouse\Trolltech\Code_less_create_more\Trolltech\Code_less_create_more\Troll\4.6\qt\src\winmain/qtmain_win.cpp:131: undefined reference to `qMain(int, char**)' Can anybody clear any of these problems to me.

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• link div to input text in firefox

  - by golf_nut

  I'm using google maps api to have a map show up on my website where visitors can also find directions. I have a starting point setup and an end point. Both are text areas. The start is empty, but I want the end point to be populated with the address from a div that I already have in the page. I have the javascript as: var address = document.getElementById("address").innerText.replace(/\n/g, " "); It works in Chrome, but Firefox shows the text in the endpoint box as 'undefined.' And Firebug is giving me - document.getElementById("address").innerText is undefined [Break On This Error] var address = document.getElementB...ress").innerText.replace(/\n/g, " "); Any help is appreciated. Thanks

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• How to setup Eclipse PDT on a bare Windows box?

  - by Alex R

  I have installed Eclipse PDT All-In-One and nothing works (I can edit PHP source but cannot execute any PHP Scripts). Do I also need to install my own PHP interpreter? Do I need XAMPP? WAMP? Cygwin? XDebug? Zend? I'm looking for the smallest amount of stuff that I need to install to get a working PHP IDE, starting with an empty install of Windows Vista.

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• Getting Assert to work in Visual C++ Unit Tests?

  - by garsh0p

  I'm using Visual Studio 2008's built in testing framework in my Visual C++ project. I'm adding a new Test Project, then a new Unit Test. However, I can't use any of the functions provided by Assert. Assert shows up in the Intellisense, but I can't do anything with it. I've done unit tests fine in Visual C#. Am I forgetting to do anything? EDIT: There isn't much code because everything I'm doing is auto-generated by Visual Studio 2008. Here are the steps I'm doing: File - New Project - Visual C++ - General - Empty Project Right click solution in Solution Explorer - Add - New Project... Visual C++ - Test - Test Project Open UnitTest1.cpp (auto-generated) Go to TestMethod1() From here, when I try to use the Assert class (like Assert.AreEqual), I can't do it. If I do the same in a Visual C# project, it works fine.

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• Idatareaders not returning values from database

  - by Phil

  In my codebehind I have this vb: Dim reader as idatareader = includes.SelectDepartmentID(PageID) While reader.Read Did = reader("departmentid") GroupingHeading = reader("heading") Folder = reader("folder") If reader("OwnBanner") Is DBNull.Value Then OwnBanner = String.Empty Else OwnBanner = reader("ownbanner") End If Then in my class I have: Public Function SelectDepartmentID(ByVal PageID As Integer) As IDataReader Dim Command As SqlCommand = db.GetSqlStringCommand("sql") db.AddInParameter(Command, "@pageid", Data.DbType.Int32, PageID) Dim reader As IDataReader = db.ExecuteReader(Command) reader.Read() Return reader End Function No Errors are being presented yet nothing is being returned by the reader. Is there an error in my code? Thanks.

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• mootools 1.1.1 scrollto element with class name ... anything like jquery?

  - by dtour

  I get the impression mootools will do this, but in a roundabout way. I am working with livevalidation script. What I want to achieve is when the from runs and errors are generated then the page will scroll to the first error found. This will be outputted as: <span class=" LV_validation_message LV_invalid">Can't be empty!</span> with jquery I could do the following: $.scrollTo($('span.LV_invalid:1')); I get the feeling in mootools I have to first find the position of the first span with class LV_invalid then pass this to the scrollTo function or is there a much simpler solution?

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• Syncing a table records with a Service response frequently

  - by Karthik Dheeraj

  I am requesting data from a service whose response in stored in a database.First, I have an empty table, whenever I make my very first request the records from the service comes to my database table. from now, whenever I make second request, the service will provide me some records which may be same as my first response, may be new records, may be updated records etc. my query is to how to update my table with respect to the responses coming from the service during my second request on-wards? so that Unchanged records will remain same, New records will be added, updated records will be updated.Do I need to write any stored procedure on my DB or any workaround ?what might be the scenario if I use Nomysql DB's like mongo DB ? Thanks In Advance.

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• Can I Import an updated structure into a MySQL table without losing its current content?

  - by Udi Wertheimer

  We use MySQL tables to which we add new fields from time to time as our product evolves. I'm looking for a way to export the structure of the table from one copy of the db, to another, without erasing the contents of the table I'm importing to. For example say I have copies A and B of a table, and I add fields X,Y,Z to table A. Is there a way to copy the changed structure (fields X,Y,Z) to table B while keeping its content intact? I tried to use mysqldump, but it seems I can only copy the whole table with its content, overriding the old one, or I can use the "-d" flag to avoid copying data (dumping structure only), but this will create an empty table when imported, again overriding old data. Is there any way to do what I need with mysqldump, or some other tool?

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• Haskell Write Computation result to file

  - by peterwkc

  Hello to all, i have function which create a tuple after computation but i would like to write it to file. I know how to write file using writeFile but did not know how to combine computation and monads IO together in the type signature This is my code. invest :: ([Char]->Int->Int->([Char], Int) ) -> [Char]->Int->Int->([Char], Int) invest myinvest x y = myinvest x y myinvest :: [Char]->Int->Int->([Char], Int) myinvest w x y | y > 0 = (w, x + y) | otherwise = error "Invest amount must greater than zero" where I have a function which computes the maximum value from list but i want to these function receive input from file then perform the computation of maximum value. maximuminvest :: (Ord a) => [a] -> a maximuminvest [] = error "Empty Invest Amount List" maximuminvest [x] = x maximuminvest (x:xs) | x > maxTail = x | otherwise = maxTail where maxTail = maximuminvest xs Please help. Thanks.

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• Haskell: writing the result of a computation to file

  - by peterwkc

  I have a function which creates a tuple after computation, but I would like to write it to file. I know how to write to a file using writeFile, but do not know how to combine the computation and monads IO together in the type signature. This is my code. invest :: ([Char]->Int->Int->([Char], Int) ) -> [Char]->Int->Int->([Char], Int) invest myinvest x y = myinvest x y myinvest :: [Char]->Int->Int->([Char], Int) myinvest w x y | y > 0 = (w, x + y) | otherwise = error "Invest amount must greater than zero" where I have a function which computes the maximum value from a list, but I want this function to receive input from a file, and then perform the computation of maximum value. maximuminvest :: (Ord a) => [a] -> a maximuminvest [] = error "Empty Invest Amount List" maximuminvest [x] = x maximuminvest (x:xs) | x > maxTail = x | otherwise = maxTail where maxTail = maximuminvest xs Please help. Thanks.

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• sed: search and replace string with line number

  - by tigerstyle

  Hi volks, I have a XML file with a lot of empty tag attributes. For instance: <mytag id=""> <ontent>aaa</content> </mytag> <mytag id=""> <ontent>bbb</content> </mytag> <mytag id=""> <ontent>ccc</content> </mytag> Now I want to replace id="" with e.g. id="2443" (id="[linenumber]") I tried to do this with sed, but I did not get a successful result. I hope someone here can help me :-)

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• JqueryUI serialize data not working on first record

  - by peace

  I am using jqueryUI v1.8. I have created a modal dialog form to edit records of a table. When the edit link on the record is clicked the record data is displayed on the form and the user edits the record. When the user submits this form the data is serialized and posted via ajax to update the database. This works well with all records except the first one. Nothing is posted to server for update only for the first record. alert(serializeddata); is empty. Similarly, The first form element in every record chosen for editing does not show the actual value the first time. Once you cancel editing and close the dialog and reopen you can see the fields accurate data. How do I resolve this?

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• linq 'not in' query not resolving to what I expect

  - by Fiona

  I've written the following query in Linq: var res = dc.TransactionLoggings .Where( x => !dc.TrsMessages(y => y.DocId != x.DocId) ).Select(x => x.CCHMessage).ToList(); This resolves to the following: SELECT [t0].[CCHMessage] FROM [dbo].[TransactionLogging] AS [t0] WHERE NOT (EXISTS( SELECT NULL AS [EMPTY] FROM [dbo].[TrsMessages] AS [t1] WHERE [t1].[DocId] <> [t0].[DocId] )) Which always returns null Basiaclly what I'm trying to write is the following Select cchmessage from transactionlogging where docid not in (select docid from trsmessages) Any suggestions on what's wrong with my LINQ statment? Many thanks, Fiona

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• why do i lose my hidden field value?

  - by user517406

  Hi, I have some hidden fields on my page, all of which work fine apart from one. I am setting the value in document.ready, before calling buildGrid() : $(document).ready(function() { $.ajax( { type: "POST", url: "/CDServices.asmx/GetWeekEndingDates", data: "{}", dataType: "json", contentType: "application/json; charset=utf-8", success: function(msg) { //store default dates in hidden fields $("#<%=hdnCurrentDate.ClientID%>").val(msg.d.CurrentDate); $("#<%=hdnLastWeekEndingDate.ClientID%>").val(msg.d.LastWeekEndingDate); } }); buildGrid(); }); Yet in buildGrid, the value in the hidden field is empty : function buildGrid() { alert($("#<%=hdnLastWeekEndingDate.ClientID%>").val()); I call other functions on button clicks where the hidden field value is picked up fine, why does the value disappear here?

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• How to show all the tables from multiple databases

  - by saorabh

  How to select all the tables from multiple databases in mySql.. I am doing the following steps but not able to achive the goal. <?php $a = "SHOW DATABASES"; $da = $wpdb->get_results($a); foreach($da as $k){ echo '<pre>'; print_r ($k->Database);//prints all the available databases echo '</pre>'; $nq = "USE $k->Database";//trying to select the individual database $newda = $wpdb->get_results($nq); $alld = "SELECT * FROM $k->Database"; $td = $wpdb->get_results($alld); var_dump($td);//returns empty array } ?> Please Help me

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• Perl Regular expression remove double tabs, line breaks, white spaces

  - by Scoox

  Hi guys, I want to write a perl script that removes double tabs, line breaks and white spaces. What I have so far is: $txt=~s/\r//gs; $txt=~s/ +/ /gs; $txt=~s/\t+/\t/gs; $txt=~s/[\t\n]*\n/\n/gs; $txt=~s/\n+/\n/gs; But, 1. It's not beautiful. Should be possible to do that with far less regexps. 2. It just doesn't work and I really do not know why. It leaves some double tabs, white spaces and empty lines (i.e. lines with only a tab or whitespace) I could solve it with a while, but that is very slow and ugly. Any suggestions?

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• Link redirects to "show" action instead of the indicated in routes.rb

  - by Brian Roisentul

  I'm working with Ruby on rails 2.3.4 and I'd like to have a link that executes an action when clicked. The relevant part of the routes.rb file looks like this: map.search_filter_relevance "/anuncios/buscar", :controller => 'announcements', :action => 'search_filter_relevance' My view(it's the model's index page) looks like this: <%= link_to 'M&Aacute;S RELEVANTES', search_filter_relevance_path %> And my controller looks like this: def search_filter_relevance raise params.inspect unless params[:announcements].nil? or params[:announcements].empty? @announcements = params[:announcements].order_by_featured end end The problem is that when I click the link I get an error due to some null value in the Show action! I'm not accessing that action at all...why is executing it?

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• iPhone - Create non-persistent entities in core data

  - by ncohen

  Hi everyone, I would like to use entity objects but not store them... I read that I could create them like this: myElement = (Element *)[NSEntityDescription insertNewObjectForEntityForName:@"Element" inManagedObjectContext:managedObjectContext]; And right after that remove them: [managedObjectContext deleteObject:myElement]; then I can use my elements: myElement.property1 = @"Hello"; This works pretty well even though I think this is probably not the most optimal way to do it... Then I try to use it in my UITableView... the problem is that the object get released after the initialization. My table becomes empty when I move it! Thanks edit: I've also tried to copy the element ([myElement copy]) but I get an error...

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• local match kickoff time

  - by Usagi Dreamy

  I'm working on a sports website and need to convert the server's match start time to local match start time. After much googling, I figured the fastest and most accurate way is to get the GMT offset value in JavaScript. The trouble is, I can't pass the GMT offset value to PHP. I've tried using both the PHP session and cookie variables, but both are always empty. The website doesn't require a user account, so there isn't any stored GMT value in the database. I'm trying to auto-detect each user's local timezone every time he/she visits the website, and then calculate the local match start time based on the timezone offset. Can someone please advise me? Thanks.

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• create_function with default parameter values?

  - by SoLoGHoST

  Ok, I'm looking into using create_function for what I need to do, and I don't see a way to define default parameter values with it. Is this possible? If so, what would be the best approach for inputting the params into the create_function function in php? Perhaps using addslashes? Well, for example, I have a function like so: function testing($param1 = 'blah', $param2 = array()) { if($param1 == 'blah') return $param1 else { $notblah = ''; if (count($param2) >= 1) { foreach($param2 as $param) $notblah .= $param; return $notblah; } else return 'empty'; } } Ok, so how would I use create_function to do the same thing, adding the parameters and their default values? The thing is, the parameters are coming from a TEXT file, as well as the function itself. So, wondering on the best approach for this using create_function and how exactly the string should be parsed. Thanks :)

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• Edit and create nodes in a view?

  - by tputkonen

  We are storing people's class attendance information to Drupal. We would like to show this in a grid/chart, where the first column of each row shows person's name, and rest of the columns (ca. 20) either a checkbox or "X" if the user attended a class, or otherwise an non-checked box or empty column: (dates here) Jack X XXX X X Jill XX XXX XX It should also be possible to edit the attendance information on the grid. Each attendance information is a node of its own. This functionality can probably mostly be achieved using views and editablefields, but there is one problem: if a person has not attended a specific class he/she will not have at all an attendace node for that day. What would be the easiest way to create an attendace node in those cases, so that it would be possible for the end user to edit the grid by just clicking on the checkbox or typing an 'X'?

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• debugfs_create_file doesn't create file

  - by bala1486

  Hello, I am trying to create a debugfs file using the debugfs_create_file(...). I have written a sample code for this. static int __init mmapexample_module_init(void) { file1 = debugfs_create_file("mmap_example", 0644, NULL, NULL, &my_fops)\ ; printk(KERN_ALERT "Hello, World\n"); if(file1==NULL) { printk(KERN_ALERT "Error occured\n"); } if(file1==-ENODEV) { printk(KERN_ALERT "ENODEV occured\n"); } return 0; } When i ran insmod i could get the Hello, World message but no the error message. So i think the debugfs_create_file worked fine. However i couldn't find any file in /sys/kernel/debug. The folder is there but it is empty. Can anyone help me with this? Thank you... Thanks, Bala

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