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pointer to stl Iterators ???

Posted on 2003-12-04
2
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Last Modified: 2013-12-14
Hi guys...
I wonder if there is possible to create a list of iterator pointers...
like this...

let's say i have a class called Object, and a list och Objects.
list<Object> objectList;

now if I search that list of objects with a iterator and find a object that I would like to "remeber" the position of...now, is there a possibility to have a pointer
that can point to these kind of iterators ?
or maybe even have another list of pointers to different iterator positions?

using std :: list<Object> :: iterator;
list<Iterator> iteratorList;  // ???

well I dont have any compilers yet so I cant test it :/
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Question by:shdr
2 Comments
 
LVL 8

Accepted Solution

by:
mnashadka earned 125 total points
ID: 9877059
The iterator itself is kind of like a pointer, so you wouldn't need to create a list of pointers to iterators, only iterators.  It might look something like:
typedef std::list<Object>::iterator Iterator; // This just makes the next line a little cleaner
std::list<Iterator> iterators; // Create the list of iterators
// Add some iterators to the list
iterators.push_back(my_iterator);

// Then you can go through that list
for(std::list<Iterator>::iterator iter = iterators.begin(); iter != iterators.end(); ++iter)
{
  if((*iter)->x == 12) // You'll have to dereference the iterator to use it
  {
    do_something();
  }
}
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Author Comment

by:shdr
ID: 9877253
thanks for the quick and helpful answer mnashadka, it worked :D
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