The cod that I am using contains these snippets of code. I am calling ThetaG_JD with the argument 2455343.50000 which is just a sample Julian date. Every time I run the program, I receive a EXC_BAD_ACCESS on the indicated line. When using gdb and printing out the intermediary values and passing them through the floor function, I get no e...
Hi guys, I have a C++ inheritance related question. I have a set of classes like this (I have not given the complete class structure coz I am lazy :) ). I want to access chiComponent class public methods using com pointer. How should I go about it? Note that I am having to change the object which "com" is pointing to in a lot of place...
This questions concerns mostly Unix/Linux style C++ development. I see that many C++ libraries store their header files in a "include" folder and source files in an "src" folder. For the sake of conformance I adopted this in my own code. But it is not clear to me whether this should be done for application code as well. I've seen a few c...
I recently saw that the boost program_options library throws a logic_error if the command-line input was un-parsable. That challenged my assumptions about logic_error vs. runtime_error. I assumed that logic errors (logic_error and its derived classes) were problems that resulted from internal failures to adhere to program invariants,...
I'm writing a simple nD-vector class, but am encountering a strange bug. I've stripped out the class to the bare minimum that still reproduces the bug: #include <iostream> using namespace std; template<unsigned int size> class nvector { public: nvector() {data_ = new double[size];} ~nvector() {delete[] data_;} template<unsigned...
All, I have a C++ COM DLL written using Visual Studio. All the interfaces have GUIDs in idl and rgs files. We want to create a new DLL with brand new GUIDs as we want it to co-exist on the same machine with the old one but with different logic. The number of GUIDs is more than 200. Is there a tool that finds the GUIDs and replaces them...
Hi All, Can anyone provide me a sample example of two-way adapter design pattern - and its practical use scenario. My understanding (after reading GOF) is a. This can happen only in case of class adapters (as opposed to object adapters). An adapted object no longer conforms to the Adaptee interface, so it can't be used as is wherev...
i'd like to put a kind of lock file in the user's home directory on linux(from c++) but fopen'ing ~/.fluudit doesn't seem to work. fopen("~/.fluudit","w"); //fails ...
I am interesting to do some transformation, like change one color to another, count all used colors, and resize image. I DO NOT want to use any exist library, I would like write myslelf all code. Summing up: How could I open BMP file and change it? ...
I'v been reading about how tooltips work and it seems like I need to register each tool to the window. My issue is, I have a custom color wheel and I want it to show the tooltip for the rgb, hsv etc of that coor which means I won't be registering multipule tools. From the looks of it, the tooltip works with a string resource, and needs e...
I have a legacy C++ app, that in its most incarnation we've been building with makefiles and VS2003's command-line tool. I'm trying to get it to build using VS2008 and MsBuild. The build is working OK, but I'm getting errors where I'd never seen errors, before, and stepping through in VS2008's debugger only confuses me. The app links ...
I have a class which calls getaddrinfo for DNS look ups. During testing I want to simulate various error conditions involving this system call. What's the recommended method for mocking system calls like this? I'm using Boost.Test for my unit testing. ...
Hello, I have some template function and I want to call it using define in c++: #define CONFIG(key, type, def) getValue<type>(key, def); Of course, it won't work. Could I make something like this? ...
What do i have to do to this code to make it compile, it's braking around this line: auto val = what.getObject(); #include<iostream> using namespace std; class CUP{ public: void whatsHappening(){} }; class MUG{ public: void whatsHappening(){} }; class CupThrower{ public: CUP cp; CUP getObj...
So I have a regex expression to parse certain parts of a file name. I'm trying to store each part in its own vector until I use it later, but it won't let me. One error I get when I try making a vector of System::String^ is that error C3698: 'System::String ^' : cannot use this type as argument of 'new' Then, when I try just making a vec...
I'm trying to create a simple dialog box from within a very simple application. It's the only UI in the application. But when I call RunStandardAlert, the buttons are non-responsive, and the function call never returns. I am not using Carbon or Cocoa anywhere else in the app. This is the code I am using, from the Carbon tutorial. I ...
I am trying to learn how to use implicitly typed variables in c++. Should i be using 'auto' from C++0x? If so how? Can some one provide me with a simple example or a good tutorial on this? Thank you. ...
As someone who hasn't followed the C++0x - now C++1x - story and developments closely, I am considering that it is nearing the time when I need to come up to speed with the 'released' version. I also am not really interested in looking over the standard immediately. Therefore: What resources are there that give the "effective changelo...
Question says it all, really. I'm not sure what the problem is. I'm fairly new to classes; my practical experience with them being close to nill, but I have read a fair amount about them. I have created a class ECard with the following constructor ECard::ECard( int bankNum, int PIN ) { m_BankNum = new int; m_PIN = ...
At school, we about virtual functions in C++, and how they are resolved (or found, or matched, I don't know what the terminology is -- we're not studying in English) at execution time instead of compile time. The teacher also told us that compile-time resolution is much faster than execution-time (and it would make sense for it to be so)...