iterator position in an stl container
Author
Is there a way to get the position of an iterator to an stl container, specifically a std::string? I'm iterating through a string, and I need to know the index of the character I'm working with, and I would prefer to use the iterator itself to do this, rather than to keep and increment a separate index variable.
Thanks.
yckx
std::string iterators are random access, so you should just be able to subtract the begin() iterator from the iterator you have to get the index.
The more generic answer is the distance function in the <iterator> header. This should work on all the standard library iterators.
For a string, it simple does myiterator - vec.begin().
[smile]
#include<iterator>..std::distance(vec.begin(), myiterator);For a string, it simple does myiterator - vec.begin().
[smile]
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