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  • Upgrading From EF 4x to 6 breaks everything

    - by dan h
    Attempted to upgrade my project from EF4 to EF6, I get build errors It appears that if i swap out the namespaces manually to include the entity.core it works, but if i change the .edmx file at all, the code reverts back to the old references and i have to manually edit the code generation files to include the update namespace references. I have attempted to "add code generation item" that does not resolve the issue at all. When i open the .edmx file in the IDE it shows me everything correctly.

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  • Learning C, would appreciate input on why this solution works.

    - by Keifer
    This is literally the first thing I've ever written in C, so please feel free to point out all it's flaws. :) My issue, however is this: if I write the program the way I feel is cleanest, I get a broken program: #include <sys/queue.h> #include <stdlib.h> #include <stdio.h> #include <string.h> /* Removed prototypes and non related code for brevity */ int main() { char *cmd = NULL; unsigned int acct = 0; int amount = 0; int done = 0; while (done==0) { scanf ("%s %u %i", cmd, &acct, &amount); if (strcmp (cmd, "exit") == 0) done = 1; else if ((strcmp (cmd, "dep") == 0) || (strcmp (cmd, "deb") == 0)) debit (acct, amount); else if ((strcmp (cmd, "wd") == 0) || (strcmp (cmd, "cred") == 0)) credit (acct, amount); else if (strcmp (cmd, "fee") == 0) service_fee(acct, amount); else printf("Invalid input!\n"); } return(0); } void credit(unsigned int acct, int amount) { } void debit(unsigned int acct, int amount) { } void service_fee(unsigned int acct, int amount) { } As it stands, the above generates no errors at compile, but gives me a segfault when ran. I can fix this by changing the program to pass cmd by reference when calling scanf and strcmp. The segfault goes away and is replaced by warnings for each use of strcmp at compile time. Despite the warnings, the affected code works. warning: passing arg 1 of 'strcmp' from incompatible pointer type As an added bonus, modifying the scanf and strcmp calls allows the program to progress far enough to execute return(0), at which point the thing crashes with an Abort trap. If I swap out return(0) for exit(0) then everything works as expected. This leaves me with two questions: why was the original program wrong? How can I fix it better than I have? The bit about needing to use exit instead of return has me especially baffled.

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  • undefined reference errors in C++

    - by Phenom
    I have files Record.h and Record.cpp. When I just include the Record.h file, I get several undefined reference errors to functions defined in those files. When I also include Record.cpp then the errors go away. Why is that? Record.h has the forward declarations for the functions it says are an undefined reference.

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  • ld returned 1 exit status

    - by uzay95
    This is the code that i'm trying to run: #include <QApplication> #include <QPushButton> int main(int argc,char *argv[]) { QApplication app(argc,argv); return app.exec(); } And this is the error that i'm getting: :-1: error: collect2: ld returned 1 exit status

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  • Rails - before_filter than includes updated object

    - by Sam
    I have a before filter than calculates a percentage that needs to include the object that is being updated. Is there a one liner in rails that takes care of this? for example and this is totaly made up: Object.find(:all, :include = :updated_object) Currently I'm sending the object that is getting updated to the definition that calculates the percentage and that works but its making things messy.

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  • Serialize boost array

    - by jules
    I would like to serialize a boost::array, containing something that is already serializable. If get this error: error C2039: 'serialize' : is not a member of 'boost::array<T,N>' I have tried to include the serialization/array.hpp header but it did not help. Is there another header to include ? According to the documentation I should be able to do that http://www.chuchusoft.com/serialization/doc/boost_types.html Thanks

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  • Is it impossible to embed Java3D in a way that I don't need to install it?

    - by Kyle
    I'm running a big application and a small part of it includes Java 3D, the problem is many users need to use the code, but it isn't practical for everyone to install Java 3D just to run the application if they aren't even going to use that section of the application. Is it possible through compiling an extra jar, or changing some paths, to include Java 3D in a project without installing it on a system? Or perhaps to manually include any dlls?

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  • C++ constructor problem, values not being set

    - by 2Real
    Hi, I'm new to C++ and I'm trying to figure out this problem I'm having with my constructor for one of my classes. What happens is... all my variables are initialized properly except two (health and type). #pragma once #include <irrlicht.h> #include <vector> #include <cassert> using namespace irr; using namespace core; using namespace scene; enum { PLAYER = 0, NPC = 1, SOLDIER = 2, CHAINGUNNER = 3 }; class Model { public: Model(void); Model(int id, std::vector<ISceneNode*> modelVec, int modType); ~Model(void); std::vector<int> path; std::vector<ISceneNode*> model; int endNode; int type; int animate; int health; u32 lastAnimation; private: int mId; }; #include "Model.h" Model::Model(void) { //assert(false); } Model::Model(int id, std::vector<ISceneNode*> modelVec, int modType) { path = std::vector<int>(); model = modelVec; endNode = 0; type = modType; animate = 0; health = 100; lastAnimation = 0; mId = id; } Model::~Model(void) {} I create a model with Model soldier(id, model, SOLDIER) Everything is set properly except type and health. I've tried many different things, but I cannot figure out my problem. I'm not sure but the default constructor is being called. It doesn't make sense because I make no called to that constructor. Thanks,

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  • Determining whether one array contains the contents of another array in ruby

    - by Andrew Grimm
    In ruby, how do I test that one array not only has the elements of another array, but contain them in that particular order? correct_combination = [1, 2, 3, 4, 5] [1, 5, 8, 2, 3, 4, 5].function_name(correct_combination) # => false [8, 10, 1, 2, 3, 4, 5, 9].function_name(correct_combination) # => true I tried using include, but that is used to test whether [1,2,3].include?(2) is true or not.

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  • Qt 4.7 QtDeclarative headers

    - by bitc
    I installed Qt 4.7 beta on OS X. Then I wanted to try out the declarative module: The doc says #include <QtDeclarative> The Minehunt example says #include <qdeclarative.h> Neither is found! Most of the other header files are where they are supposed to be: /Library/Frameworks/Qt*.framework/Versions/4/Headers What do I do?

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  • In a given Json, search for the particular given string based on key, return true if found, else false Using jQuery/Javascript

    - by NaanuManu
    Given JSON String/object {"selectAll":false,"include":{"country_197":{"id":"197","data_type":"country","name":"Singapore","desc":"","parent_key_id":"all_all","status":""},"country_100":{"id":"100","data_type":"country","name":"India","desc":"","parent_key_id":"all_all","status":""}},"exclude":{"state_2":{"id":"2","data_type":"state","name":"Andhra Pradesh","desc":"","parent_key_id":"country_100","status":""}}} Given search string is: country_100 Required : Have to search for country_100 in Given JSON String/object by key parent_key_id Ex: searching country_100 is found : {"selectAll":false,"include":{"country_197":{"id":"197","data_type":"country","name":"Singapore","desc":"","parent_key_id":"all_all","status":""},"country_100":{"id":"100","data_type":"country","name":"India","desc":"","parent_key_id":"all_all","status":""}},"exclude":{"state_2":{"id":"2","data_type":"state","name":"Andhra Pradesh","desc":"","parent_key_id":"**country_100**","status":""}}} So return True, else return false please help me in finding a solution.

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  • What's the fastest lookup algorithm for a key, pair data structure (i.e, a map)?

    - by truncheon
    In the following example a std::map structure is filled with 26 values from A - Z (for key) and 0 – 26 for value. The time taken (on my system) to lookup the last entry (10000000 times) is roughly 250 ms for the vector, and 125 ms for the map. (I compiled using release mode, with O3 option turned on for g++ 4.4) But if for some odd reason I wanted better performance than the std::map, what data structures and functions would I need to consider using? I apologize if the answer seems obvious to you, but I haven't had much experience in the performance critical aspects of C++ programming. #include <ctime> #include <map> #include <vector> #include <iostream> struct mystruct { char key; int value; mystruct(char k = 0, int v = 0) : key(k), value(v) { } }; int find(const std::vector<mystruct>& ref, char key) { for (std::vector<mystruct>::const_iterator i = ref.begin(); i != ref.end(); ++i) if (i->key == key) return i->value; return -1; } int main() { std::map<char, int> mymap; std::vector<mystruct> myvec; for (int i = 'a'; i < 'a' + 26; ++i) { mymap[i] = i - 'a'; myvec.push_back(mystruct(i, i - 'a')); } int pre = clock(); for (int i = 0; i < 10000000; ++i) { find(myvec, 'z'); } std::cout << "linear scan: milli " << clock() - pre << "\n"; pre = clock(); for (int i = 0; i < 10000000; ++i) { mymap['z']; } std::cout << "map scan: milli " << clock() - pre << "\n"; return 0; }

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  • C++ boost function overloaded template

    - by aaa
    I cannot figure out why this segment gives unresolved overloaded function error (gcc version 4.3.4 (Debian 4.3.4-6)): #include <algorithm> #include <boost/function.hpp> int main { typedef boost::function2<const int&, const int&, const int&> max; max m(static_cast<max>(&std::max<int>)); } can you help me, thanks

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  • Xerces conflicts string.h

    - by Velthune
    Compiling my program I have this error: /usr/include/xercesc/util/Compilers/GCCDefs.hpp:133:60: error: declaration of ‘int strcasecmp(const char*, const char*)’ has a different exception specifier /usr/include/string.h:536:12: error: from previous declaration ‘int strcasecmp(const char*, const char*) throw ()’ make: *** [src/test/VFTImageMaterial.o] Error 1 Any idea about this conflict with string.h?

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  • LINK : fatal error LNK1104: cannot open file '.obj'

    - by FL3SH
    I have a big problem with building a simple program. I am using many tutorials, instructions and I can't solve it. I edit the variable's path as follows: C/C++-General-Additionals Include Directories-MyOpenCv\build\include Linker-General-Additionals Library Directories-MyOpenCv\build\x86\vc11\lib Linker-Input-Additional Dependencies-*I added .libs The same in Debug and Release.Windows 8 x64, VS2012 x32, OpenCV 2.4.5

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  • C++ Class Construction and Member Initialization

    - by anachoret
    The first print shows the member value to be false, and the other two prints show it as true. Why does the first output differ from the last two? #include #include using namespace std; class MyClass { public: bool value; bool stuff; }; class Container { public: vector my_classes; Container() { MyClass c; cout

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  • C++ STL make_heap and pop_heap not working.

    - by Henrique
    I need to use a Heap, so i've searched about the STL one, but it doesn't seem to work, i wrote some code to explain what i mean: #include <stdio.h> #include <stdlib.h> #include <vector> #include <algorithm> struct data { int indice; int tamanho; }; bool comparator2(const data* a, const data* b) { return (a->tamanho < b->tamanho); } int main() { std::vector<data*> mesas; data x1, x2, x3, x4, x5; x1.indice = 1; x1.tamanho = 3; x2.indice = 2; x2.tamanho = 5; x3.indice = 3; x3.tamanho = 2; x4.indice = 4; x4.tamanho = 6; x5.indice = 5; x5.tamanho = 4; mesas.push_back(&x1); mesas.push_back(&x2); mesas.push_back(&x3); mesas.push_back(&x4); mesas.push_back(&x5); make_heap(mesas.begin(), mesas.end(), comparator2); for(int i = 0 ; i < 5 ; i++) { data* mesa = mesas.front(); pop_heap(mesas.begin(),mesas.end()); mesas.pop_back(); printf("%d, %d\n", mesa->indice, mesa->tamanho); } return 0; }; and this is what i get: 4, 6 2, 5 1, 3 3, 2 5, 4 So it's not working as a heap, as the maximum element on the vector is not being returned right. Or am i doing something wrong?

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  • how do i avoid this linking error ?

    - by Yogesh
    if i have defined a global variable(with initialization) in header file, and included this file in two file and try to compile and link, compiler gives linking error ----------------- >>headers.h #ifndef __HEADERS #define __HEADERS int x = 10; #endif >>1.c #include "headers.h" main () { } --------------------- >>2.c #include "headers.h" fun () {}

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  • An internal error occurred during runtime. Smarty

    - by rag
    WARNING [2] include(somepath/templates_c/%%B0^B01^B019F522%%login.htm.php) [function.include]: failed to open stream: No such file or directory on Line No 1871 in somepath/Smarty.class.php Error!: An internal error occurred during runtime. Any body please tell me why this error is occuring..

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  • How do I add dependencies to this header file

    - by Phenom
    Here is a simple header file for six different programs that used to work right, but then my files also include other files. This needs to get changed so that if the dependencies change the files that include those dependencies get updated. all: load list show add delete btree %: %.cpp g++ $< -g -o $@

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  • Why can't I reserve 1,000,000,000 in my vector ?

    - by vipersnake005
    When I type in the foll. code, I get the output as 1073741823. #include <iostream> #include <vector> using namespace std; int main() { vector <int> v; cout<<v.max_size(); return 0; } However when I try to resize the vector to 1,000,000,000, by v.resize(1000000000); the program stops executing. How can I enable the program to allocate the required memory, when it seems that it should be able to? I am using MinGW in Windows 7. I have 2 GB RAM. Should it not be possible? In case it is not possible, can't I declare it as an array of integers and get away? BUt even that doesn't work. Another thing is that, suppose I would use a file(which can easily handle so much data ). How can I let it read and write and the same time. Using fstream file("file.txt', ios::out | ios::in ); doesn't create a file, in the first place. But supposing the file exists, I am unable to use to do reading and writing simultaneously. WHat I mean is this : Let the contents of the file be 111111 Then if I run : - #include <fstream> #include <iostream> using namespace std; int main() { fstream file("file.txt",ios:in|ios::out); char x; while( file>>x) { file<<'0'; } return 0; } Shouldn't the file's contents now be 101010 ? Read one character and then overwrite the next one with 0 ? Or incase the entire contents were read at once into some buffer, should there not be atleast one 0 in the file ? 1111110 ? But the contents remain unaltered. Please explain. Thank you.

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  • compiling a c++ program including mysql

    - by wyatt
    I'm new to gcc, and trying to compile a c++ program which includes mysql.h using the command: g++ -o test test.cpp -L/usr/include/mysql -lmysqlclient -I/usr/include/mysql It works without issue, but I was wondering if someone could explain the arguments to me. I don't like using commands I don't understand. Thanks

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