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  • Recommended OpenGL / GLUT Reference

    - by TJB
    What OpenGL / GLUT reference is the best around? Ideally I'm looking for something with C++ sample code to help me learn OpenGL as well as details about the APIs similar to what MSDN provides for .net programming. If there isn't a one stop shop, then please list the set of references I should use and what the strengths of each one is. Thanx!

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  • Saving a reference to a int.

    - by Scott Chamberlain
    Here is a much simplified version of what I am trying to do static void Main(string[] args) { int test = 0; int test2 = 0; Test A = new Test(ref test); Test B = new Test(ref test); Test C = new Test(ref test2); A.write(); //Writes 1 should write 1 B.write(); //Writes 1 should write 2 C.write(); //Writes 1 should write 1 Console.ReadLine(); } class Test { int _a; public Test(ref int a) { _a = a; //I loose the reference here } public void write() { var b = System.Threading.Interlocked.Increment(ref _a); Console.WriteLine(b); } } In my real code I have a int that will be incremented by many threads however where the threads a called it will not be easy to pass it the parameter that points it at the int(In the real code this is happening inside a IEnumerator). So a requirement is the reference must be made in the constructor. Also not all threads will be pointing at the same single base int so I can not use a global static int either. I know I can just box the int inside a class and pass the class around but I wanted to know if that is the correct way of doing something like this? What I think could be the correct way: static void Main(string[] args) { Holder holder = new Holder(0); Holder holder2 = new Holder(0); Test A = new Test(holder); Test B = new Test(holder); Test C = new Test(holder2); A.write(); //Writes 1 should write 1 B.write(); //Writes 2 should write 2 C.write(); //Writes 1 should write 1 Console.ReadLine(); } class Holder { public Holder(int i) { num = i; } public int num; } class Test { Holder _holder; public Test(Holder holder) { _holder = holder; } public void write() { var b = System.Threading.Interlocked.Increment(ref _holder.num); Console.WriteLine(b); } } Is there a better way than this?

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  • Update WCF service reference

    - by SteveC
    In BizTalk 2006 R2, is there some way to regenerate the reference to a WCF service that has been created using the "Add Generated Items / Consume WCF Service" option? I tried just re-running the wizard, but it creates new ODX, BindingInfo, etc. files, and breaks the solution, so that's not the way :-( Searched the web, but not found any references to how to update the references, just plenty on creating from scratch

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  • error adding reference in .net 3.5

    - by d daly
    Hi Im trying to add a reference to a dll i downloaded which I want to use for some sftp work. as soon as i add it i get "could not load file or asse3mble....failed to grant minimum permission requests" Is this to do with my own account permissions? thanks DD

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  • Getting RAW Soap Data from a Web Reference Client running in ASP.net

    - by Harry
    I'm trying to trouble shoot a web service client in my current project. I'm not sure of the platform of the Service Server (Most likely LAMP). I believe there is a fault on their side of the fence as i have eliminated the potential issues with my client. The client is a standard ASMX type web reference proxy auto generated from the service WSDL. What I need to get to is the RAW SOAP Messages (Request and Responses) What is the best way to go about this?

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  • Must parameter of assignment operator be reference?

    - by Tim
    When overloading assignment operator of a class in C++, must its parameter be reference? For example, class MyClass { public: ... MyClass & operator=(const MyClass &rhs); ... } Can it be class MyClass { public: ... MyClass & operator=(const MyClass rhs); ... } ? Thanks!

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  • Perl: reference to subroutine in external .pm file

    - by Pmarcoen
    I'm having some trouble figuring out how to make a reference to a subroutine in an external .pm file. Right now, I'm doing this : External file package settingsGeneral; sub printScreen { print $_[0]; } Main use settingsGeneral; my $printScreen = settingsGeneral::printScreen; &$printScreen("test"); but this result into an error: Can't use string ("1") as a subroutine ref while "strict refs" in use

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  • STL class for reference-counted pointers?

    - by hasen j
    This should be trivial but I can't seem to find it (unless no such class exists!) What's the STL class (or set of classes) for smart pointers? UPDATE Thanks for the responses, I must say I'm surprised there's no standard implementation. I ended up using this one: http://www.gamedev.net/reference/articles/article1060.asp

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  • Python - how to check if weak reference is still available

    - by Alex
    Hi all, I am passing some weakrefs from Python into C++ class, but C++ destructors are actively trying to access the ref when the real object is already dead, obviously it crashes... Is there any Python C/API approach to find out if Python reference is still alive or any other known workaround for this ? Thanks

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  • Return reference from class to this.

    - by Thomas
    Hi, I have the following member of class foo. foo &foo::bar() { return this; } But I am getting compiler errors. What stupid thing am I doing wrong? Compiler error (gcc): error: invalid initialization of non-const reference of type 'foo&' from a temporary of type 'foo* const'

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  • C# - Does foreach() iterate by reference?

    - by sharkin
    Consider this: List<MyClass> obj_list = get_the_list(); foreach( MyClass obj in obj_list ) { obj.property = 42; } Is 'obj' a reference to the corresponding object within the list so that when I change the property the change will persist in the object instance once constructed somewhere?

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  • Python - copy by reference

    - by qba
    Is there any possibility to copy variable by reference no matter if its int or class instance? My goal is to have two lists of the same objects and when one changes, change is visible in second. In other words i need pointers:/

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  • "undefined reference" error with namespace across multiple files

    - by user1330734
    I've looked at several related posts but no luck with this error. I receive this undefined reference error message below when my namespace exists across multiple files. If I compile only ConsoleTest.cpp with contents of Console.cpp dumped into it the source compiles. I would appreciate any feedback on this issue, thanks in advance. g++ Console.cpp ConsoleTest.cpp -o ConsoleTest.o -Wall /tmp/cc8KfSLh.o: In function `getValueTest()': ConsoleTest.cpp:(.text+0x132): undefined reference to `void Console::getValue<unsigned int>(unsigned int&)' collect2: ld returned 1 exit status Console.h #include <iostream> #include <sstream> #include <string> namespace Console { std::string getLine(); template <typename T> void getValue(T &value); } Console.cpp #include "Console.h" using namespace std; namespace Console { string getLine() { string str; while (true) { cin.clear(); if (cin.eof()) { break; // handle eof (Ctrl-D) gracefully } if (cin.good()) { char next = cin.get(); if (next == '\n') break; str += next; // add character to string } else { cin.clear(); // clear error state string badToken; cin >> badToken; cerr << "Bad input encountered: " << badToken << endl; } } return str; } template <typename T> void getValue(T &value) { string inputStr = Console::getLine(); istringstream strStream(inputStr); strStream >> value; } } ConsoleTest.cpp #include "Console.h" void getLineTest() { std::string str; std::cout << "getLinetest" << std::endl; while (str != "next") { str = Console::getLine(); std::cout << "<string>" << str << "</string>"<< std::endl; } } void getValueTest() { std::cout << "getValueTest" << std::endl; unsigned x = 0; while (x != 12345) { Console::getValue(x); std::cout << "x: " << x << std::endl; } } int main() { getLineTest(); getValueTest(); return 0; }

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  • Passing arguments by value or by reference in objective C

    - by Rafael
    Hello, I'm kind of new with objective c and I'm trying to pass an argument by reference but is behaving like it were a value. Do you know why this doesn't work? This is the function: - (void) checkRedColorText:(UILabel *)labelToChange { NSComparisonResult startLaterThanEnd = [startDate compare:endDate]; if (startLaterThanEnd == NSOrderedDescending){ labelToChange.textColor = [UIColor redColor]; } else{ labelToChange.textColor = [UIColor blackColor]; } } And this the call: UILabel *startHourLabel; (this is properly initialized in other part of the code) [self checkRedColorText:startHourLabel]; Thanks for your help

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  • R: Pass by reference

    - by Pierre
    Can you pass by reference with "R" ? for example, in the following code: setClass("MyClass", representation( name="character" )) instance1 <-new("MyClass",name="Hello1") instance2 <-new("MyClass",name="Hello2") array = c(instance1,instance2) instance1 array instance1@name="World!" instance1 array the output is > instance1 An object of class “MyClass” Slot "name": [1] "World!" > array [[1]] An object of class “MyClass” Slot "name": [1] "Hello1" [[2]] An object of class “MyClass” Slot "name": [1] "Hello2" but I wish it was > instance1 An object of class “MyClass” Slot "name": [1] "World!" > array [[1]] An object of class “MyClass” Slot "name": [1] "World!" [[2]] An object of class “MyClass” Slot "name": [1] "Hello2" is it possible ? Thanks Pierre

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  • reference to specific hash key

    - by dave
    How do I create a reference to the value in a specific hash key. I tried the following but $$foo is empty. Any help is much appreciated. $hash->{1} = "one"; $hash->{2} = "two"; $hash->{3} = "three"; $foo = \${$hash->{1}}; $hash->{1} = "ONE"; #I want "MONEY: ONE"; print "MONEY: $$foo\n";

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  • Exception while trying to reference LINQ namespace

    - by MarceloRamires
    While trying to use linq in a .NET 2.0 winforms project I got: Namespace or type specified in the Imports 'System.Linq' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases In both the lines that reference the following namespaces: System.Linq; System.Xml.Linq; How could I get these namespaces to work on .NET 2.0 without referencing an external DLL or anything ?

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