Re: GetHeadPosition & GetNext

"Heinz Ozwirk" <>
Fri, 18 Aug 2006 12:58:48 +0200
"Jacky Luk" <> schrieb im Newsbeitrag

What are the equivilence methods/functions for GetHeadPosition() and
GetNext() in MFC for the standard template library?

There are no strict equivalents, but begin() and ++ are very close. As close
as they can be with the slightly different concept to access elements in a
CList or an std::list.

While for a CList you would write something like

    POSITION p = list.GetHeadPosition();
    while (p)
        ElementType& element = list.GetNext(pos);

with an std::list, you could write similiar code as

    for (std::list<ElementType>::iterator it = list.begin();
        it != list.end();
        ElementType& element = *it;

You can access all STL containers using the same pattern. You only have to
keep in mind that elements in a set are const, so you have to use
ElementType const& and elements in a map are actually key-value-pairs.


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