🚀 go-pugleaf

X-Original-Date: 2 Jan 1996 19:18:24 GMT

terris@rahul.net (Terris Linenbach) wrote:
>X-Original-Date: 1 Jan 1996 05:46:03 GMT
>
>"erase" invalidates all active iterators on the container.  

I think it is not quite true. Erase invalidates some active iterators on the
container. In case of list, erase invalidates only those iterators that point
to the erased elements.

In this particular case:

    for (_itemIter  =   _itemList.begin();
         _itemIter  !=  _itemList.end();
         _itemIter++)  // <- itemIter is invalid now
    {
       _itemList.erase (_itemIter);
    }

But there is a simple fix:

   for (_itemIter  =   _itemList.begin();
         _itemIter  !=  _itemList.end(); )
    {
       _itemList.erase (_itemIter++);
    }

and, of course,

	_itemList.erase(_itemList.begin(),  _itemList.end());

will do the same thing.



Alex Stepanov
stepanov@mti.sgi.com

Silicon Graphics
2011 N. Shorline Boulevard
Mountain View, CA 94043-1389

tel.: (415)933-6121


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