I have been getting a really annoying error about an std::out_of_range when calling substr. The exact error is terminate called after throwing an instance of 'std::out_of_range' what(): basic_string::substr I'm absolutely sure that tmp_request has a length greater then 1. No matter what I pass to substr1, 2, or bodyposit alwa...
Boost.Asio is great library but it has one huge drawback -- extreamly slow compilation times. A simple implementation (really simple) of HTTP protocol (about 1k lines of code) requires about 13.5s to compile under GCC 4.4! I tryed to use PCH but it does not improve compilation times too much (about 1s. only). So are there any tutorials...
I want to wait on a condition for up to 1 second. I've try passing in time_duration: boost::posix_time::time_duration td = boost::posix_time::milliseconds(50); readerThread_cond_.timed_wait(lock, boost::bind(&XXXX::writeCondIsMet, this), td); but I get the error: /usr/include/boost/thread/pthread/condition_variable.hpp:156: erro...
I wrote some very simple code since I'm just starting C++ and I want to get warmed up with the syntax and compiler before our binary tree assignment. #include <iostream> using namespace std; int main(){ cout << "Hello"; return 0; } The only output I'm receiving is: 1> Build started: Project: First-BinaryTree, Configuration: Debug...
#include <stdio.h> #include <stdlib.h> #include <unistd.h> int main(void) { int i=0; while(i<10) { printf("%d", i); usleep(10000); // or sleep(1) i++; } return 0; } I want the program to last 10 secs, i.e. print 1 - wait 1 sec - print 2 - wait 1 se...
I have this original C++ function called "s": long s(long n) { long sum = 0; long m; m = (long) sqrt(n); for (long i = 2; i < m; i++) if ((n % i) == 0) sum += (i + (n/i)); if (n>1) sum += 1; if ((m*m) == n) sum += m; return sum; } I've been struggling to convert this function over to using the GMP's mpz type, so tha...
I'm trying to make a card game where the cards fan out. Right now to display it Im using the Allegro API which has a function: al_draw_rotated_bitmap(OBJECT_TO_ROTATE,CENTER_X,CENTER_Y,X ,Y,DEGREES_TO_ROTATE_IN_RADIANS); so with this I can make my fan effect easily. The problem is then knowing which card is under the mouse. To...
Hi all, recently i discovered in a relatively large project, that ugly runtime crashes occurred because various headers were included in different order in different cpp files. These headers included #pragma pack - and these pragmas were sometimes not 'closed' ( i mean, set back to the compiler default #pragma pack() ) - resulting in d...
Is the wchar_t type required for unicode support? If not then what's the point of this multibyte type? Why would you use wchar_t when you could accomplish the same thing with char? ...
I have a C++ Program listening for incoming socket connections on port 2222. I have an Adobe AIR/Flex application that attempts to connect to it, when I click a button. When I Connect To My Socket Over My Intranet, My C++ program hears and accepts the incoming socket connection and Everything Works Fine: var Sock:Socket=new Socket("192...
So I was doing some simple C++ exercises and I noticed an interesting feat. Boiled down to bare metal one could try out compiling the following code: class nice { public: nice() {} }; int main() { nice n; return 0; }; The result is a compilation error that goes something like this: <file>.cpp: In function ‘int main()’: <fi...
Anyone have idea on this? Linker errors are way out of my wheelhouse, especially ones like this. Thanks for any help provided. ^_^ Is there any more info I should include? 1>Linking... 1>freeglut_static.lib(freeglut_window.obj) : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/OPT:ICF' specification 1>LIBCMTD.lib(dbgheap.obj) : ...
How do compilers know how to correctly handle this code? struct Foo { int bar; Foo() { bar = 3; } Foo& operator=(const Foo& other) { bar = other.bar; return *this; } int SetBar(int newBar) { return bar = newBar; } }; static Foo baz; static Foo someOtherBaz = baz...
I've written an iPhone program which includes a library. The library uses some C++. The program runs fine in the simulator as long as debugger is turned off. GDB immediately complains with the following /SourceCache/gdb/gdb-962/src/gdb/dwarf2read.c:7593: internal-error: could not find partial DIE in cache A problem internal to GDB ha...
I am getting linker errors lnk2001. i am very new to vs2008 and not sure how to make my prog work with cryptopp library. know how to link it? instruction so i don't get that undefined symbols stuff? ...
Possible Duplicate: How can I run an external program from C and parse its output? Hi, Could someone please tell us how to capture a result when executing system() function ? Actually I wrote a c++ program that displays the machine's IP address, called "ipdisp" and I want when a sever program executes this ipdisp program, t...
I've seen a lot of games use something similar to a .DAT file or a specific file type that the game has for itself. I'm just beginning with C++ and DirectX and I was interested in keeping my information in something similar to a .DAT. My initial conception was that it would hold information on the files you wanted to store within the .D...
im now currently developing a standalone c++ program that would list all the access URL in a browser and its corresponding response time.... at this point of time, i can already sniff all out and in going packets. i am using winpcap for this... retrieved packets were filtered to by only those 'tcp port 80(http) or 443(https)'... and kn...
I have 3 classes. In it's simplest form, it looks like, class tree { public: tree_node* find_node(const std::string& text) { return factory.find(text); } private: tree_node_factory factory; } class tree_node { public: tree_node(const std::string& text) : text_(text) {} const std::string& text() const { ...
I tried const int i[] = { 1, 2, 3, 4 }; float f[i[3]]; // g++ cries "error: array bound is not an integer constant" int main() { const int j[] = { 0, 1, 2, 3 }; float g[j[3]]; // compiler is happy :) return 0; } What is the difference between the two aggregates? How come referring to a const aggregate's e...