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  • simple question on C

    - by lego69
    I have this snippet of the code char *str = “123”; if(str[0] == 1) printf("Hello\n"); why I can't receive my Hello thanks in advance! how exactly compiler does this comparison if(str[0] == 1)?

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  • Basic Hibernate question using and sql query

    - by Aerosteak
    Hello Sorry if this is basic but I cannot find the solution anywhere. I have an java Object ‘Person’ with 3 properties firstname,lastname and username. I have an Oracle Store procedure returning a Resultset with the 3 column. All works fine for that. Now I have another StoreProcedure that will only return firstname and lastname but not username. I get the following error : « could not read column value from result set username. » Hibernate tries to fetch the username property from the resultset. If I remove the property username, then it works. Do I have to Create a Special Pojo for Each type of resultset or can I tell Hibernate what to map for each result set? Please help.

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  • php: security question

    - by Syom
    in my cms i have index.php, where client must enter username and password. if they are correct, he'll moove to admin.php, where the cms is. but now hacker can enter to cms/admin.php, so my security now is awful. i know, that i can use $_SESSION variable. index.php - i can give some value to $_SESSION['error']: $_SESSION['error'] = TRUE, and in admin.php just verify it admin.php if($_SESSION['error'] == TRUE) { my script here... } else header("Location: index.php"); but i want to rich this effect without SESSION. could you give me an idea, how can i do it? thanks

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  • Java generics question with wildcards

    - by Sean
    Just came across a place where I'd like to use generics and I'm not sure how to make it work the way I want. I have a method in my data layer that does a query and returns a list of objects. Here's the signature. public List getList(Class cls, Map query) This is what I'd like the calling code to look like. List<Whatever> list = getList(WhateverImpl.class, query); I'd like to make it so that I don't have to cast this to a List coming out, which leads me to this. public <T> List<T> getList(Class<T> cls, Map query) But now I have the problem that what I get out is always the concrete List<WhateverImpl> passed in whereas I'd like it to be the Whatever interface. I tried to use the super keyword but couldn't figure it out. Any generics gurus out there know how this can be done?

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  • simple question of pushViewController

    - by user217572
    messagecontroller is nothing but object of initialize nib file. [self.navigationController pushViewController:messageController animated:YES]; this statement executes in normal condition this statement also works on state maintainace testing , this line executes properly but not open new view ,why?

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  • jquery question

    - by OM The Eternity
    I am using the Jquery library to copy the text enter in one textfield to another textfield using a check box when clicked.. which is as follows <html> <head> <script src="js/jquery.js" ></script> </head> <body> <form> <input type="text" name="startdate" id="startdate" value=""/> <input type="text" name="enddate" id="enddate" value=""/> <input type="checkbox" name="checker" id="checker" /> </form> <script> $(document).ready(function(){ $("input#checker").bind("click",function(o){ if($("input#checker:checked").length){ $("#enddate").val($("#startdate").val()); }else{ $("#enddate").val(""); } }); } ); </script> </body> </html> now here i want the check box to be selected by default, so that the data entered in start date get copied automatically as check box is checked by default... so what event should be called here in jquery script? please help me in resolving this issue...

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  • C++ CRTP(template pattern) question

    - by aaa
    following piece of code does not compile, the problem is in T::rank not be inaccessible (I think) or uninitialized in parent template. Can you tell me exactly what the problem is? is passing rank explicitly the only way? or is there a way to query tensor class directly? Thank you #include <boost/utility/enable_if.hpp> template<class T, // size_t N, class enable = void> struct tensor_operator; // template<class T, size_t N> template<class T> struct tensor_operator<T, typename boost::enable_if_c< T::rank == 4>::type > { tensor_operator(T &tensor) : tensor_(tensor) {} T& operator()(int i,int j,int k,int l) { return tensor_.layout.element_at(i, j, k, l); } T &tensor_; }; template<size_t N, typename T = double> // struct tensor : tensor_operator<tensor<N,T>, N> { struct tensor : tensor_operator<tensor<N,T> > { static const size_t rank = N; }; I know the workaround, however am interested in mechanics of template instantiation for self-education

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  • question regarding pointer in c language

    - by din
    char *sample = "String Value"; &sample is a pointer to the pointer of "String Value" is the above statement right? If the above statement right, what is the equivalent of &sample if my declaration is char sample[] = "String Value"

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  • MS Access question

    - by Scott Jackson
    I've an access database table with 3 fields : Purchase date Warranty time Warranty expiry Warranty time has 1, 2, 3, 4, 5 in it which corresponds to years. How can I auto-populate the 'Warranty expiry' field (which is a date field) by looking at the 'Purchase date' and then adding on the 'Warranty time' (warranty time will be 1 = 365 days, 2 = 730 days, etc)?

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  • PHP scope question

    - by Dan
    Hi, I'm trying to look through an array of records (staff members), in this loop, I call a function which returns another array of records (appointments for each staff member). foreach($staffmembers as $staffmember) { $staffmember['appointments'] = get_staffmember_appointments_for_day($staffmember); // print_r($staffmember['appointments'] works fine } This is working OK, however, later on in the script, I need to loop through the records again, this time making use of the appointment arrays, however they are unavailable. foreach ($staffmembers as $staffmember) { //do some other stuff //print_r($staffmember['appointments'] no longer does anything } Normally, I would perform the function from the first loop, within the second, however this loop is already nested within two others, which would cause the same sql query to be run 168 times. Can anyone suggest a workaround? Any advice would be greatly appreciated. Thanks

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  • Weird <T> Activator Question.

    - by j-t-s
    Hello, I'm sorry, but a while ago I wrote a piece of code that was so nice. And now I'm trying to remember it for a new project. All I can remember about it is that it looked something like this: public static Create<T>() *something missing here* : *Something missing here* { // add methods etc here. I also think I remember something like " Activator.CreateInstance" being used. But I'm not sure. } Has anybody written code like this before? Basically what it did was it created a control and passed it back to another project. Thank you jt

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  • Noobie Jquery Question

    - by piratebill
    I've been working with Jquery fro a grand total of two hours now. Up until this point I have made this really simple FAQ page. <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(document).ready(function() { $("#void").click(function(event) { event.preventDefault(); }); $('#faq').find('dd').hide().end().find('dt').click(function() { $(this).next().slideToggle(); }); }); </script> <dl id="faq"> <dt><a href="" id="void">Coffee</a></dt> <dd>- black hot drink</dd> <dt><a href="" id="void">Milk</a></dt> <dd>- white cold drink</dd> </dl> The problem is only the first item is working. My questions are, why is only the first entree working and how do I fix it? I've tried using an each() but I am unsure where to put it.

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  • question about group by

    - by chun
    Hi in mysql how to write a sql like this, to get the amount of X 20 and <20 select date, numberOfXMoreThan20,numberOfXLessThan20, otherValues from table group by (date, X20 and X<20) thanks

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  • Question about the ITextUndoHistory that gets returned from TryGetHistory

    - by Nick U
    Everytime the IWpfTextView's TextBuffer changes I am trying to get the history's redostack and undostack and simply checking the count. When doing this I am encountering a "Method not supported exception" when trying to access the two stacks. Am I retrieving the history incorrectly or does VS not want me seeing/editing the contents of the stacks? I can post the code if necessary... Thanks, Nick

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  • Somewhat newb question about assy and the heap.

    - by Eric M
    Ultimately I am just trying to figure out how to dynamically allocate heap memory from within assembly. If I call Linux sbrk() from assembly code, can I use the address returned as I would use an address of a statically (ie in the .data section of my program listing) declared chunk of memory? I know Linux uses the hardware MMU if present, so I am not sure if what sbrk returns is a 'raw' pointer to real RAM, or is it a cooked pointer to RAM that may be modified by Linux's VM system? I read this: How are sbrk/brk implemented in Linux?. I suspect I can not use the return value from sbrk() without worry: the MMU fault on access-non-allocated-address must cause the VM to alter the real location in RAM being addressed. Thus assy, not linked against libc or what-have-you, would not know the address has changed. Does this make sense, or am I out to lunch?

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  • PHP XMLREADER - QUESTION

    - by Matias
    Hi Guys, I am pretty new to xml parsing and I am using XMLREADER to parse a huge file. Given the following XML (sample): <hotels> <hotel> <name>Bla1</name> </hotel> <hotel> <name>Bla2</name> </hotel> </hotels> And then the XMLREADER in PHP which pulls up the values to my Database: $reader = new XMLReader(); $reader->open('hotels.xml'); while ($reader->read()) { if ($reader->name == "name") { $reader->read(); mysql_query("INSERT INTO MyHotels (hotelName) VALUES (\"$reader->value\")"); } } $reader->close(); The problem is that I've got a single empty row between each of the parsed nodes!! Not sure why this happens! | ID | hotelName | | 1 | Bla1 | | 2 | | | 3 | Bla2 | | 4 | | Help is greatly appreciated.

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  • vba: what does ReDim Preserve do and simple array question

    - by every_answer_gets_a_point
    i am looking at someone else's vba excel code. they are doing ReDim Preserve dataMatrix(7, i) in both loops. what does this do? also, it seems like the second loop just overwrites the data in the first, loop, is that correct? Dim dataMatrix() As String Worksheets.Item("ETS").Select Do While Trim(Cells(r, 1)) <> "" Debug.Print "The line: ", Trim(Cells(r, 1)), r r = r + 1 dataMatrix(1, i) = Trim(Cells(r, 1)) ''file name dataMatrix(2, i) = Trim(Cells(r, 2)) ''sample type dataMatrix(3, i) = Trim(Cells(r, 3)) ''sample name dataMatrix(4, i) = "ETS" '' dataMatrix(5, i) = Trim(Cells(r, 5)) ''Response dataMatrix(6, i) = Trim(Cells(r, 6)) ''ISTD Response dataMatrix(7, i) = Trim(Cells(r, 10)) ''Calculated Conc i = i + 1 ReDim Preserve dataMatrix(7, i) Loop r = 5 Worksheets.Item("ETG").Select Do While Trim(Cells(r, 1)) <> "" Debug.Print "The line: ", Trim(Cells(r, 1)), r r = r + 1 dataMatrix(1, i) = Trim(Cells(r, 1)) ''file name dataMatrix(2, i) = Trim(Cells(r, 2)) ''sample type dataMatrix(3, i) = Trim(Cells(r, 3)) ''sample name dataMatrix(4, i) = "ETG" dataMatrix(5, i) = Trim(Cells(r, 5)) ''Response dataMatrix(6, i) = Trim(Cells(r, 6)) ''ISTD Response dataMatrix(7, i) = Trim(Cells(r, 10)) ''Calculated Conc i = i + 1 ReDim Preserve dataMatrix(7, i) Loop

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  • Regex Question..

    - by Josh
    Hello everyone- In my C# Console App I'm trying to use Regex to search a string to determine if there is a match or not. Below is my code but it is not quite working right so I will explain further. sSearchString is set to "_One-Call_Pipeline_Locations" and pDS.Name is a filename it is searching against. Using the code below it is set to true for Nevada_One-Call_Pipeline_Locations and Nevada_One-Call_Pipeline_LocationsMAXIMUM. There should be a match for Nevada_One-Call_Pipeline_Locations But Not for Nevada_One-Call_Pipeline_LocationsMAXIMUM. How can I change my code to do this properly? Thanks in advance if (Regex.IsMatch(pDS.Name, sSearchString))

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  • Twitter Search API Question

    - by supermogx
    I'm using the twitter search API to get twitter posts based on some keywords, using AND and OR keyword. It works OK, but I seem to get problems using hashtags... For example : Not returning any results : http://search.twitter.com/search.json?q="%23ipad+AND+%23ipod"+OR+"%23joke+AND+%23funny"&rpp=100&callback=? Returning results : http://search.twitter.com/search.json?q="ipad+AND+ipod"+OR+"joke+AND+funny"&rpp=100&callback=? But there's results with #ipod AND #ipad because when I search only for #ipod, I can see a lot of posts with both hashtags. Example : http://search.twitter.com/search.json?q=%23ipad&rpp=100&callback=? P.S. %23 = # Any idea?

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  • Quick question about jQuery selector content efficiency

    - by serg
    I am loading HTML page through ajax and then doing a bunch of searches using selectors: $.ajax({ ... dataType: "html", success: function(html) { $("#id1", html); $(".class", html); //... } } Should I extract $(html) into a variable and use it as a content, or it doesn't matter (from performance point)? success: function(html) { $html = $(html); $("#id1", $html); $(".class", $html); //... }

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  • PLEASE HELP JAVA/SQL question

    - by fred-ghosn
    Hello everyone, well I'm new here and I really need some help.. I want to create a table and this table's name will be inserted from a textfield. However when I run the query it's giving me an error, any help on this one? Ill paste the code here: public boolean CreateTable() { TableNumber=jTextField4.getText(); try { String password = null; String s = "CREATE TABLE '"+TableNumber+'" (Item char(50),Price char(50))"; ConnectionForOrders(); stmt = conn.createStatement(); stmt.executeUpdate(s); boolean f=false; ConnectionForOrdersclose();

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