Is there a method/pattern/library to do something like that (in pseudo-code): task_queue.push_back(ObjectType object1, method1); task_queue.push_back(OtherObjectType object2, method2); so that I could do the something like: for(int i=0; i<task_queue.size(); i++) { task_queue[i].object -> method(); } so that it would call: obj1...
I want to be able to determine the output folder based on the platform name: AS3, AS4, AS5, SUN. I couldn't figure out how to extract the platform name from the system. I experimented with: uname -a file /bin/bash Thanks Solution ./lsb_release -a Kudos to Paul Dixon ...
What is the memory overhead of having an empty vector vs having a pointer to a vector? Option A: std::vector<int> v; Option B: std::vector<int> *v = NULL; I believe that option B takes 1 32 bit pointer (assuming 32 bit here) How much memory does the empty 'v' take up? ...
New guy want to learn about socket programming in win32. I know bit of MFC but thats not good point to start as it just hides the internal details form programmer. ...
Ok, I understand what is static variable is, but what is a "static" function? And why is it that if I declare function let's say "void print_matrix" in let's say a.cpp (WITHOUT a.hpp) and include "a.cpp" - I get "print_matrix@@....) already defined in a.obj", BUT if I declare it "static void print_matrix" then it compiles? UPDATE Just...
A previous question showed a nice way of printing to a string. The answer involved va_copy: std::string format (const char *fmt, ...); { va_list ap; va_start (ap, fmt); std::string buf = vformat (fmt, ap); va_end (ap); return buf; } std::string vformat (const char *fmt, va_list ap) { // Allocate a buffer on the stack...
I have to import/translate the code from one C++ class so that I may use it in a C program. The C program is large and has lots of dependencies on C libraries both open and closed. The C++ Class .cpp file is 650 lines I have no experience mixing C and C++ so even though I have looked at one guide on how to do it, I am not convinced wh...
Hi, I am trying to debug a small operating system I have written in an university course in C++. At runtime somewhere one of my objects is getting corrupted. It seems like this happens due to accidentally writing to the wrong memory address. As I am unable to find the place where this happens from pure looking at the code, I need anothe...
There are some very good books about Lua. What they cannot cover is the big picture, when it comes to real applications (doc/view-type of applications). The interesting things are around those questions: Use C++ in Lua or Lua in C++? Who gets the main-loop? What plays where? How are model (document) and Lua-State kept in sync? Should t...
When ClickOnce deploys apps, it generates an .application file that allows you to execute the application, so the main application is builded on C++.Net 2003 using Fx1.1, when I told him that call the first file (.application file from ClickOnce Deployment C# 3.0 app) he didnt know how ¿?! I trying to write some code snippet, the code b...
Duplicate of this question. I'm learning C++ at the moment, and I'm coming across a lot of null-terminated strings. This has got me thinking, what makes more sense when declaring pointers: char* string or char *string ? To me, the char* format makes more sense, because the type of "string" is a pointer to a char, rather than a cha...
I am experimenting with C++ winsockets. I want to create a method with which I can find the server on the network, without knowing it's IP. To do this I simply loop my connect method through IP adresses 192.168.1.0 to 192.168.1.255. However, the time between each connect is quite large, the program tends to wait at the: connect(nBytes, (...
The other week, I wrote a little thread class and a one-way message pipe to allow communication between threads (two pipes per thread, obviously, for bidirectional communication). Everything worked fine on my Athlon 64 X2, but I was wondering if I'd run into any problems if both threads were looking at the same variable and the local ca...
I am interested in writing a very minimalistic compiler. I want to write a small piece of software (in C/C++) that fulfills the following criteria: output in ELF format (*nix) input is a single textfile C-like grammar and syntax no linker no preprocessor very small (max. 1-2 KLOC) Language features: native data types: char, int an...
i am trying to compile my program which uses regex on linux. I built the boost library in the libs/regex/build by typing make -fgcc.mak which created a directory gcc which contains the following four files boost_regex-gcc-1_35 boost_regex-gcc-d-1_35 libboost_regex-gcc-1_35.a libboost_regex-gcc-d-1_35.a Now I want to use regex ...
Hello, Many times when I am watching others code I just want to find where and how a variable is defined. Normally what I do now is look for the type of the variable until I find the definition, that is very time consuming. And I guess that there are some tools that can help me in this rutinary situation. Any suggestion in some tools or...
I recently added some DirectX code to my program, and now my double data type variables only have the range/resolution of a float (.. or atleast less range/resolution than they used to). If I remove the direct3D initialization - "Direct3DCreate9(D3D_SDK_VERSION)" - the problem goes away. Any insight? Thanks. ...
Firstly, I'm pretty new to C++. I believe that getline() isn't a standard C function, so #define _GNU_SOURCE is required to use it. I'm now using C++ and g++ tells me that _GNU_SOURCE is already defined: $ g++ -Wall -Werror parser.cpp parser.cpp:1:1: error: "_GNU_SOURCE" redefined <command-line>: error: this is the location of the previ...
Hi All, We are using the CString class throughout most of our code. However sometimes we need to convert to a char *. at the moment we have been doing this using variable.GetBuffer(0) and this seems to work ( this mainly happens when passing the Csting into a function where the function requires a char *). The function accepts this and ...
Background I have an abstract class, something like class IConverter{ public: virtual void DoConvertion() = 0; }; There will be many concrete classes which just implements DoConvertion method. class TextConverter : public IConverter{ public: virtual void DoConvertion(){ // my code goes here } }; class ...