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I did not know about the warning level. I made the change.

Also, I read about lvalue and rvalue and now understand more what is going on. I would like to mark the argument as const but in the real...

The below code compiles without error using VS 2012 but with g++ 4.1.2 I get this error:



main.cpp: In function 'int main(int, char**)':
main.cpp:37: error: no matching function for call to...

Thanks very much.

In this code snippet what does the line (line 20) that reads



else ;


cause to the flow of the program, if anything? If it does nothing why would someone have it there?

I am attempting to use C code from C++ and am having trouble sharing a struct between the two languages.

Currently I am able to get everything to compile by defining the struct in both the C++...

In NodePool.h you could use only the forward declaration for CObjects and put the implementation of the function



float getCost(CObjects* unit)


in a .cpp file with the #include for...

Thanks for everyone's help. I was so focused on finding an algorithm to do this in one call I didn't think to copy then erase.

Once again thank you guys for your help.

Is your example only removing the elements from dataQ that are copied to data_array?

I see



dataQ.clear()


But that will drop all elements not just what was copied with std::copy. Or...

I'm not taking all of the data from the dataQ only what is requested by the caller of the function. The size variable is the amount of data requested by the caller. Int he real code data_array is a...

Is there an algorithm in the STL to move elements similar to how std::copy works? I have read various places that the new C++ standard has a move algorithm. Unfortunately the compiler I use (g++...

Usually setter functions take a const reference and return void.

For example:


void person::set_person(const string& n)
{
...
}

Hi Everyone.

I'm getting a few messages like this from the gcc (version 4.1.2) compiler.

[cc] /usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_construct.h:81:...

Why does the following code not break after delete bar? It seems like the object foo would have a reference to a deleted object and crash in printBar(). Is bar not really gone after the "delete bar"...

In general what are the additional or special things to be concerned about and watch out for when making a multi threaded app run correctly on a multiple CPU machine?

I remember from a while back...

I figured it out.

I ended up adding a template parameter to ProcessingQueue and using that as the thrid template parameter to std::priority_queue.
I created a default Comparer with the signature...

I was expecting the user to supply the comparison function at compile time. My theory was that they would derive a class from Comparer and override operator().

Either was is probably okay as the...

I have a template class that contains a std::priority_queue and would like for the user of this class to be able to pass in the functor object that is used for comparison. Here is the code I have but...

Can anyone help with the cause and resolution to this compile error?

Here is the code:


template <typename T>
class BigQueue {
public:
enum QueueState {GOOD, BAD,...

I found a comment in code stating that PTHREAD_MUTEX_INITIALIZER is typeless then the following code:



const pthread_mutex_t pthread_mutex_initer = PTHREAD_MUTEX_INITIALIZER;


then...

Do you mean the linker is trying to find libXyz.so or the .so that the some_symbol is defined in?

Thanks for your help.

Hi Everyone,
In general what is the following linker error indicating?

/app/lib/libXyz.so: undefined reference to `some_symbol'

Using g++ compiler on Linux.

I get multiple of these all...

Hi Everyone,
I have a physical data model in Rose Data Modeler and ERwin. I would like to generate CRUD operations in Java but do not see an option for this in either Rose or ERwin.

Is there...

Hello Everyone,
I would like to return a pointer to an object that is found in a set. Here is the code:



#include <cstdlib>
#include <iostream>
#include <string>
#include <set>

The issue here is that the base class has no implmentation for the overloaded operator functions, only a declaration, so I don't see how they could be called by the derived object.

So I'm...

Graham,
The sample code I posted had no implementation for the non-virtual functions which is why I was questioning the purpose of them.

I'm still not exactly sure. I'll re-read laserlight's...