Re: Copy Constructors and Assignment Operator, When should I use?

Abhishek Padmanabh <>
Mon, 3 Mar 2008 08:04:15 -0800 (PST)
On Mar 3, 8:37 pm, rockdale <> wrote:

So, now my question is:

if I erase my item from the vector inside my iteration, do I need to
move the iterator's position?

           std::vector<ItemB>::iterator vecItr;
                      for(vecItr = m_vecB.begin();=

                                vecItr !=

= m_vecB.end();



    if( condition for erase is




            //do I need to do

anything in here to avoid the error I got above?



Erasing an element from a vector invalidates the all iterators after
the erased element, so the above is incorrect. One way to do it would

   std::vector<ItemB>::iterator itend =
             std::remove_if(m_vecB.begin(), m_vecB.end(),
                                         <condition that checks if
remove needed>
   m_vecB.erase(itend, m_vecB.end());

<condition that checks if remove needed> is a function or a function
object. That would be coded as:

bool needRemove(const ItemB& item)
      //check if item eligible for remove
      //if yes, return true
      //otherwise, return false

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