We all know that you can overload a function according to the parameters: int mul(int i, int j) { return i*j; } std::string mul(char c, int n) { return std::string(n, c); } Can you overload a function according to the return value? Define a function that returns different things according to how the return value is used: int n = mul(...
It seems safe to cast the result of my vector's size() function to an unsigned int. How can I tell for sure, though? My documentation isn't clear about how size_type is defined. ...
This is just a general question - I was sitting and waiting for a bit of software to compile (we use Incredibuild here but can still take 10/15 mins) and it got me wondering, does anyone know how long it took to compile Windows XP or Vista? I did some googling but didn't really find any useful information ...
I am beginning to use Eclipse Ganymede with CDT at work. Unfortunately, all of our C++ headers use a .h extension. Eclipse thinks these are C headers and flags them with lots of syntax errors on things like classes and namespaces. I've tried to change the file type association, but it's "locked". Interestingly, "*.h" is associated wi...
Strange program hang, what does this mean in debug? After attaching windbg I found the following: (1714.258): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=015b5c74 ebx=178a13e0 ecx=dddddddd edx=009a8ca0 esi=09fbf698 e...
After discussing with a newly arrived developer in my team, I realized that there are still, in C++, habits of using C constructs because they are supposed to be better (i.e. faster, leaner, prettier, pick your reason). What are the examples worth sharing, showing a C constructs, compared to the similar C++ construct? For each example,...
I'm working on a C++ prettyprinter and would like to show the results of the prettyprinter by comparing code before and after running it. Does anyone know where I can find some ugly C++ code to run through the prettypretty? Ideally the code would come from some open source software. ...
I've been working with code synthesis xsd to generate an xml tree to ensure constinency of the xml output to the original xsd. After initial testing, everything looked ok but when I tried entering invalid values (correct type, but outside the defined range), the values were allowed. Although the xml is well formed and conforms to the t...
I need to write a tool in C++ to determine the changed bits in a file compared against another file for replication. What would be the best method of accomplishing this? I don't have a specific OS or library in mind, I'm open to suggestions. My primary goal is reducing the amount of network traffic involved in replicating. ...
I am working on an embedded systems project and have run into an issue of the compiler being programatically embedded in the Paradigm C++ IDE. I would like to be able to automate building. The processor is the AMD186ES. I am not working with the OS - just baremetal stuff. I need to generate real-mode 16-bit 8086 machine code from C++. ...
I was wonding if there was an alternative to itoa() for converting an integer to a string because when I run it in visual Studio I get warnings, and when I compile my program under Linux, it won't even compile. Thanks, tomek ...
Hi, I have the following problem using template instantiation [*]. file foo.h class Foo { public: template <typename F> void func(F f) private: int member_; }; file foo.cc template <typename F> Foo::func(F f) { f(member_); } file caller.cc Foo::func(boost::bind(&Bar::bar_func, bar_instance, _1)); While this c...
I want to read all thumbnails from a folder with images in Windows XP. But if I read image file to get thumbnail, it seems a bit slow, so I wish I can first read the windows image thumbnail cache:thumb.db. Is there any lib in c++ or c to read thumbnails from thumb.db. ...
I'm writing in second-person just because its easy, for you. You are working with a game engine and really wish a particular engine class had a new method that does 'bla'. But you'd rather not spread your 'game' code into the 'engine' code. So you could derive a new class from it with your one new method and put that code in your 'g...
I need a cross platform solution for clearing the console in both Linux and Windows written in C++. Are there any functions in doing this? Also make note that I don't want the end-user programmer to have to change any code in my program to get it to clear for Windows vs Linux (for example if it has to pick between two functions then the ...
I keep hearing people complaining that C++ doesn't have garbage collection. I also hear that the C++ Standards Committee is looking at adding it to the language. I'm afraid I just don't see the point to it... using RAII with smart pointers eliminates the need for it, right? My only experience with garbage collection was on a couple of c...
I would like to send some keystrokes from a C++ program into another window. For that reason I would like to have the user select the target window similar to how it is done in the Spy++ utility that comes with Visual Studio (drag a crosshair cursor over target window and have target window highlighted by a frame). How is this dragging...
(mingw32, windows xp) Hello, I am attempting to migrate from Java to c++. I am confused and frustrated about finding, installing, and compiling non-standard c++ libraries. in Java it's so convenient they stuffed every functionality and documentation ever needed in java's standard api. Is there a list of essential c++ library such as Thre...
It's common in C++ to name member variables with some kind of prefix to denote the fact that they're member variables, rather than local variables or parameters. If you've come from an MFC background, you'll probably use "m_foo". I've also seen "myFoo" occasionally. C# (or possibly just .NET) seems to recommend using just an underscore,...
I have a piece of software which is linked against several libraries. They all exists in a dynamic (.so) and a static (.a) version. By default, when using g++ it chooses the dynamic version of the libraries and that's fine with me. However, one of them absolutely needs to be linked statically. I thought about using -static but then it ...