iterate vector, remove certain items as I go

Question

I have a std::vector m_vPaths; I will iterate this vector and call ::DeleteFile(strPath) as I go. If I successfully delete the file, I will remove it from the vector. My question is can I get around having to use two vectors? Is there different data structure that might be better suited for what I need to do?

example: using iterators almost does what I want, but problem is once you erase using an iterator, all iterators become invalid.

 std::vector<std::string> iter = m_vPaths.begin();
    for( ; iter != m_vPaths.end(); iter++) {
        std::string strPath = *iter;
        if(::DeleteFile(strPath.c_str())) {
            m_vPaths.erase(iter);   
                //Now my interators are invalid because I used erase,
                //but I want to continue deleteing the files remaining in my vector.    
        }
    }

I can use two vectors and I will no longer have a problem, but is there a better, more efficient method of doing what I'm trying to do?

btw, incase it is unclear, m_vPaths is declared like this (in my class):

std::vector<std::string> m_vPaths;

Answer 1

The erase() method returns a new (valid) iterator that points to the next element after the deleted one. You can use this iterator to continue with the loop:

std::vector<std::string>::iterator iter;
for (iter = m_vPaths.begin(); iter != m_vPaths.end(); ) {
    if (::DeleteFile(iter->c_str()))
        iter = m_vPaths.erase(iter);
    else
        ++iter;
}