I have an exe using a dll which is using another dll. This situation has arisen: In dll1: class abc { static bool FindSubFolders(const std::string & sFolderToCheck, std::vector< std::string > & vecSubFoldersFound); } In dll2: void aFunction() { std::vector<std::string> folders; std::string...
I want to allow the user to use lowercase or uppercase letters giving the value to the char type variable... Any help?? ...
So, I'm writting a CLI application in C++ which will accept a bunch of arguments. The syntax is pretty typical, -tag arg1 arg2 -tag2 arg1 ... Right now, I take the char** argv and parse them into an std::map< std::string, std::list<**std::string** > > > The key is the tag, and the list holds each token behind that tag but before the...
How do you fix a memory leak where you're returning from the function the leak itself? For example, I make a char* returnMe = new char[24324]; returnMe is what ends up getting returned from the function. How do you account for this memory leak? How do you destroy it once it's been returned? I have some memory management rules in plac...
I'm looking for a C, C++ or Java based SOM implementation with licensing applicable for commercial use (non-zero cost is okay). So far I'm aware that there exists SOM_PAK (from Kohonen), but the licensing forbids commercial use. Is anyone aware of alternative implementations? ...
I have been thinking about the IEnumerator.Reset() method. I read in the MSDN documentation that it only there for COM interop. As a C++ programmer it looks to me like a IEnumerator which supports Reset is what I would call a forward iterator, while an IEnumerator which does not support Reset is really an input iterator. So part one of ...
Hi, in a project we want to wrap the Boost Asio socket in a way, that the using class or the wrapping .h does not have to include the boost headers. We usually use pointers and forward declarations for wrapped classes. Foward declaration: namespace boost { namespace asio { namespace ip { class udp; } } } And...
Is this legal in c++ (yes i know it's legal in .net), and if so, how/why would it be used? static class foo{ public: foo(); int doIt(int a); }; ...
I'm using strcmp to compare character arrays in c++, but I get the following error for every occurrence of strcmp: error: invalid conversion from 'int' to 'const char*' followed by: error: initializing argument 2 of 'int strcmp(const char*, const char*)' I've include string, string.h, and stdio.h and here is my code, thanks to all who ...
thanks for u r reply please give your reply for below program. For table creation and insertion i am using these string. Create table mystudents(sname varchar(50),sno varchar(25),mark1 numeric,mark2 numeric); insert into mystudents values('lala','tk001',100,100); VC+++ CString("select * from mystudents;") int status = mysql_query(hn...
I have a C++ class that looks a bit like this: class BinaryStream : private std::iostream { public: explicit BinaryStream(const std::string& file_name); bool read(); bool write(); private: Header m_hdr; std::vector<Row> m_rows; } This class reads and writes data in a binary form...
I'm trying to debug a method which among other things, adds items to a list which is local to the method. However, every so often the list size gets set to zero "midstream". I would like to set the debugger to break when the list size becomes zero, but I don't know how to, and would appreciate any pointers on how to do this. Thanks. ...
I'm trying to jump through some hoops to organize data in a special way. I'm including a simplified piece of code that demonstrates my pain. I can't use boost. I'm using the latest version of g++ in cygwin. #include <iostream> #include <map> using namespace std; int main () { map< int,int > genmap; map< int,int >::iterator g...
I'm having a little issue. I have an object that I'm freeing with delete, and it has a char* that's being freed with free in its destructor. The reason I'm using free is because I used strdup and malloc in creating the char pointers. The reason I'm using malloc is because I used strdup to begin with in most code paths. Would this scenari...
I am setting up a Linux development machine (Ubuntu 9.0.x). I want to know the best development environment for a C++ developer on Ubuntu - giving my background (see below). 5 years+ C++ 5 years Visual Studio Not much experience using GNU tools (GCC, GDB, make, etc.) 6 months or so of using Emacs at university (about 8 years ago!) - ...
I have the following code compiled by gcc: #include <iostream> using namespace std; class Buffer { public: operator char *() { cout << "operator const * called" << endl; return buff; } private: char buff[1024]; }; int main(int, char**) { Buffer b; (char *)b; // Buffer::operator char * is called here return 0; } ...
Hi, I'm having some trouble overloading methods in C++. As an example of the problem, I have a class with a number of methods being overloaded, and each method having one parameter with a different data type. My question: is there a particular order in the class these methods should appear in, to make sure the correct method is called d...
When I am building packages, (on Gentoo, but that's not too important to this question) I get this warning that '-ggdb3' flag can 'break packages. I have yet to find an instance of when that is true. Although I once found some code which broke under different optimisation settings, that's different from including debugging symbols. ...
Why in cpp a dll in debug mode is X10 bigger than release while in .Net they are almost the same size? ...
I'm wondering with functions like the following, whether to use a temporary variable (p): void parse_foo(const char*& p_in_out, foo& out) { const char* p = p_in_out; /* Parse, p gets incremented etc. */ p_in_out = p; } or can I just use the original argument and expect it to be optimized similarly to the...