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  • Input Iterator for a shared_ptr

    - by Baz
    I have an iterator which contains the following functions: ... T &operator*() { return *_i; } std::shared_ptr<T> operator->() { return _i; } private: std::shared_ptr<T> _i; ... How do I get a shared pointer to the internally stored _i? std::shared_ptr<Type> item = ??? Should I do: MyInterfaceIterator<Type> i; std::shared_ptr<Type> item = i.operator->(); Or should I rewrite operator*()?

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  • Are there any alternative to the header(); function ?

    - by Simon
    The thing is, I have a log-in page. And, when user enters Username & Password, they must be re-directed to success/failure page. Now, I have placed a "header('location:welcome.php');" after mysql rows are returned. But, it is giving me Header already sent errors, and I don't know much about PHP to do anything about it, let alone understand why it is happening. So, how to you transfer a user to another page after log-in data is verified? Same problem is happening with register, post, comment and search functions in my site.

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  • Android HTTP get methods

    - by Nick
    I have written a number of applications for blackberry and am just starting in Android. It seems to me that android has a lot more built in functions. I am starting by recreating some of my BB apps on Android and on one I take a few xml sites and parse them out. On blackberry I implemented this by creating a class that extended a thread. I would construct a new instance of this class with the parameters of my http request and it would call a function back in my main class, sending it the results. I am tempted to reuse my code, but am curious if android has something better built in. I have been looking at the handler class as well as possible using a service. Bascially, I would like to start a new thread that will return a document of a specific url. Thanks!

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  • C# Get/Set Syntax Usage

    - by RoR
    These are declarations for a Person class. protected int ID { get; set; } protected string Title { get; set; } protected string Description { get; set; } protected TimeSpan jobLength { get; set; } How do I go about using the get/set? In main, I instantiate a Person Tom = new Person(); How does Tom.set/get?? I am use to doing C++ style where you just write out the int getAge() and void setAge() functions. But in C# there are shortcuts handling get and set?

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  • jQuery .html() vs .text() produce different result in .hover() function

    - by Paddy
    I have a issue where in I am using the .hover() function. If I use .text() fuction to add the html (anchor tag) which I am dynamically creating, it works fine, both the functions are called as desired. But when I use the .html() function instead then the second fuction of .hover() is never been called. var i = 0; textItems = new Array(); ////I am putting the value into textItems using the jquery ajax call ////and i get its value from a .each() function. //.text() implementation $('#textArea-id').hover( function() { $('#textArea-id').text(textItems[i]); }, function() { //-->mouseout function is called here } ); //.html() implementation $('#textArea-id').hover( function() { $('#textArea-id').html(textItems[i]); }, function() { //-->mouseout function is never been called } );

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  • I just don't get why there is a glMatrixMode in OpenGL

    - by René Nyffenegger
    I just don't understand what OpenGL's glMatrixMode is for. As far as I can see, when glMatrixMode(GL_MODELVIEW) is called, it is followed by glVertex, glTranslate, glRotate and the like, that is, OpenGL commands that place some objects somewhere in the space. On the other hand, if glOrtho or glFrustum or gluProjection is called (ie how the placed objects are rendered), it has a preceeding call of glMatrixMode(GL_PROJECTION). I guess what I have written so far is an assumption on which someone will prove me wrong, but is not the point of using different *Matrix Mode*s exactly because there are different kinds of gl-functions: those concerned with placing objects and those with how the objects are rendered? So, if someone could shed some light on this issue, I'd certainly appreciate it.

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  • why can't you use the debug/release version of a lib interchangeably

    - by user205834
    In C++, most of the libs come in Debug/Release versions. Question 1. What are the big difference between Debug and Release versions (e.g. what advantages do you have using one versus the other). Question 2. A lib is just has an implementation of the functions, how does a function implementation change if you are using debug/release versions? Question 3. Can you ever build your app in debug mode and use a release version of a lib? Thanks.

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  • Program Terminates On File Move

    - by Merus
    I have a .Net program that, as one of its functions, takes a file from a user-specified directory and puts it in another, special, directory, specified via UNC (which may or may not be local). I don't open any of these files in this part of the code. There's this bizarre bug I'm having where, on a Windows Server 2003 SP2 VM, this program randomly does a hard abort while doing the move to a local folder. It just terminates. No exception, no logging, and it doesn't appear to happen at any particular moment. I can't reproduce this problem on my development machine, and it only appears to happen during the copy of a particular kind of file that's about a megabyte or so. There are other formats copied to different directories using very similar code, all smaller, and they work fine. Why would a Windows .Net program do a hard abort like this? What can I do to fix it?

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  • 7 - drupal overriding theme fucntions gettting notices

    - by welovedesign
    So I am overriding a theme function by putting the contents in my template.php module, the problem is that it it throwing up loads of undefined index notices because there are lots of functions that are defined in the module. How can I define these in the template.php file and prevent the notices. Note: I know i can turn them off 'uc_cart_block_content' => array( 'variables' => array( 'help_text' => NULL, 'items' => NULL, 'item_count' => NULL, 'item_text' => NULL, 'total' => NULL, 'summary_links' => NULL, 'collapsed' => TRUE, ), 'file' => 'uc_cart.theme.inc', ),

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  • Play Framework Form "fold" method naming rationale

    - by oym
    Play Framework's (2.x) Form class has a method called fold who's usage is indicated as: anyForm.bindFromRequest().fold( f => redisplayForm(f), t => handleValidFormSubmission(t) ) Essentially, the first function parameter is what gets executed on binding failure, and the 2nd on binding success. To me it seems similar to the 'success' and 'error' callbacks of jquery's ajax function. My question is why did the Play developers call the method "fold"? As a disclaimer I am new to Scala, but I am failing to see the connection between this and the functional Scala fold operation. The only similarity is that it is a higher order function; but I don't see any combining that is taking place, nor does it delegate internally in its implementation to any of the Scala fold functions.

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  • Issue with this function. The code is not executing.

    - by Tapha
    The function is supposed to update the values in the database. Here is the code: //Functions //Function to Update users networth function update_net($name) { //Get worth & balance at the time $sql_to_get_worth_balance = "SELECT * FROM user WHERE username = '$name'"; $sql_query = mysql_query($sql_to_get_worth_balance); while ($rows = mysql_fetch_assoc($sql_query)) { $worth = $rows['worth']; $balance_ = $rows['cash_balance']; } //Get net_worth now $new_net_worth = $worth + $balance; //Update net_worth $sql_for_new_worth = "UPDATE user SET net_worth = '$new_net_worth'"; $sql_worth_query = mysql_query($sql_worth); } It is used here: //Get username $username = $_SESSION['username']; if (isset($username)) { //Update networth $update_worth = update_net($username);

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  • Boost singleton trouble

    - by Ockonal
    Hi guys, I have some class which uses boost singleton. It calls some function from own c++ library. This library is written in make file as dependence. Now I have another singleton class and it should call first singleton class. After this code I got linkers error about undefined references for functions which are used in first singleton. When I remove calling first singleton class from second the errors remove. Maybe there is something wrong?

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  • how to generate uncorrelated random numbers in repeated calls in parallel?

    - by user1446948
    I want to write a function which will be repeatedly called by other functions many times. Inside this function it is supposed to generate a lot of random numbers and this part will be treated in parallel. If only for one run, the seed can be chosen differently for each thread, so that the random numbers will be uncorrelated. However, if this function will be called the 2nd time, it seems that the random numbers will repeat unless the seed will be again changed during the later calls. So my question is, is there a good way to generate the random numbers or reset the seed so that the random numbers generated by repeated calls to this function and also by different threads are really random? Thank you.

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  • Writing a C++ wrapper for a C library

    - by stripes
    I have a legacy C library, written in an OO type form. Typical functions are like: LIB *lib_new(); void lib_free(LIB *lib); int lib_add_option(LIB *lib, int flags); void lib_change_name(LIB *lib, char *name); I'd like to use this library in my C++ program, so I'm thinking a C++ wrapper is required. The above would all seem to map to something like: class LIB { public: LIB(); ~LIB(); int add_option(int flags); void change_name(char *name); ... }; I've never written a C++ wrapper round C before, and can't find much advice about it. Is this a good/typical/sensible approach to creating a C++/C wrapper?

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  • Path Inclusion/Global variable not working?

    - by Dan LaManna
    Simply put, my config file includes my database class, and the config file has in it: global $db; $db = new database(DB_HOST, DB_NAME, DB_USER, DB_PASS); That file is root/config.php Moving on to root/functions/func.newpage.php doesn't have any includes/requires, and uses $db-classfunction since the file I'm working with: root/newpage.php - requires the config file, as well as func.newpage.php. However I still come up with: Undefined variable db. Anything you guys are seeing I'm not? Thanks! Let me know if more details are needed.

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  • new controller in oo php

    - by pradeep
    Hi , I have a practical doubt , I am using OO php , and i am new to it. I am using zend framework to be clear. I am writing controllers(class) and actions(methods) with in it say PatientMapper.php which has all single mysql table related actions and Patient.php which has all setter and getter functions. I get a doubt that when should i write a new controller. Should i write a controller for all the actions on a single mysql table . or a single controller for all actions related to a module.

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  • C++ Static Array Initialization - Memory Issue

    - by donalmg
    Hi, I have a header file which contains a member variable declaration of a static char array: class ABC { public: static char newArray[4]; // other variables / functions private: void setArray(int i, char * ptr); } In the CPP file, I have the array initialized to NULL: char ABC::newArray[4] = {0}; In the ABC constructor, I need to overwrite this value with a value constructed at runtime, such as the encoding of an integer: ABC::ABC() { int i; //some int value defined at runtime memset(newArray, 0, 4); // not sure if this is necessary setArray(i,newArray); } ... void setArray(int i, char * value) { // encoding i to set value[0] ... value [3] } When I return from this function, and print the modified newArray value, it prints out many more characters than the 4 specified in the array declaration. Any ideas why this is the case. I just want to set the char array to 4 characters and nothing further. Thanks...

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  • [Python] Help me : how i can deal with web page !

    - by Str1k3r
    hello every one... am looking for modules or functions let's me joins in id web !!!! i mean like i told python go to hotmail.com then go to signup ! how i can do that i mean how i can tell python go to hotmail.com then find some thing called signup in source page then i tell him join to him ....etc i hope you understand my idea ! ** am thinking on urllib2 .. maybe it's can do that? am just new in python

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  • Printing Script Codes.

    - by Spelljack
    I wanna print out script's codes after the output. The script goes on different ways on the way it calls. So i wanna see it when script runs. is there any function that prints all script codes as the way it writed. Example: $foo = "bar"; $foo .= " is my bar"; function foobar() { // do some stuff here } i wanna see the codes just like this. is there a way to do this? without file_get_contents(), file(), readfile() functions?

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  • including a string as a parameter to a function in a header file? c++

    - by Nara
    hello everyone, total newbie is here :) i have this header file, zeeheader.h, and i wrote some classes in it, i'm having problems giving a string as a parameter to one of the functions: class DeliTest { public: void DeliCheck(Stack*,string); void ComCheck (unsigned,string); bool EofCheck (unsigned,string); }; as i was implementinng it in the cpp file, i added #include to it, it seemed to be working, for example : as i was writing the "data." i got the "length()" appear by the intellisense, so i thought that it was working, but it wasn't. i got errors like: syntax error : identifier 'string' overloaded member function not found in 'DeliTest' this is one of the fucntions in the cpp file: bool DeliTest::EofCheck(unsigned i, string data) { if (i == data.length()-1) return 1; return 0; } am i supposed to be adding something to the header file??

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  • Processing a method after the view has loaded..

    - by Susanth
    Hi ! I have implemented a subview which is supposed to load immediately when I click a button in the parent view. After loading the subview(which is basically holding an activityindicator), the program is supposed to process a method(which gets data from a server, so takes time) in it. However, I am unable to do it. What happens now is, when I click the button on the parent view, it processes the method first and only after that does the subview load on screen. Why is this so? Is there any specific functions I could use to make my method load only after the view has loaded?

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  • How to Handle Console.log and error output in JavaScript.

    - by uber_n00b
    I have a constructor that has a series of classes and functions within it - in each function I check if the param is set to show the error and output if so. Like so using an inline if. The issue and question is short of keeping two versions is this approach not wise in that each IF has to be evaluated thus adding to the time it takes to perform? debugSlide = (bag.debug==1)? console.log("item id =" + bag.itemId) : 0; How do you do this? Any pointers on where I can find tips on this? Thanks in advance!

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  • Looking for a VIM Book

    - by sixtyfootersdude
    I have been using vim for about six months now. I know my way around pretty well. I know all of the "basic commands", have defined my own functions and have defined some syntax files. I was hopping to pickup a book on vim to read in my spare time. There is nothing specific that I want to learn I just want to improve my general knowledge. I looked on amazon and there are about 7 possibilities. Any recommendations?

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  • @ symbol for strings in jQuery

    - by anilca
    if (confirm('<%=Ns1.Ns2.MyClass.GetResourceText("DeleteConfirmationMessage")%>')) { /* something to do...*/ } I have a jQuery expression as above. But the return value of GetResourceText method is a very long string. So my page renders the function like below: if (confirm(' Are you sure lablabla? If you delete this lablabla... lablabla... ')) { Because of this my jQuery functions do not work. Is there a symbol for jQuery like @ that we use in C#?

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  • Getting the fractional part of a float without using modf()

    - by knight666
    Hi, I'm developing for a platform without a math library, so I need to build my own tools. My current way of getting the fraction is to convert the float to fixed point (multiply with (float)0xFFFF, cast to int), get only the lower part (mask with 0xFFFF) and convert it back to a float again. However, the imprecision is killing me. I'm using my Frac() and InvFrac() functions to draw an anti-aliased line. Using modf I get a perfectly smooth line. With my own method pixels start jumping around due to precision loss. This is my code: const float fp_amount = (float)(0xFFFF); const float fp_amount_inv = 1.f / fp_amount; inline float Frac(float a_X) { return ((int)(a_X * fp_amount) & 0xFFFF) * fp_amount_inv; } inline float Frac(float a_X) { return (0xFFFF - (int)(a_X * fp_amount) & 0xFFFF) * fp_amount_inv; } Thanks in advance!

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