template function help

[Rex_chaos]

Hi all,
suppose A is an array. With the help of template function
find_first_of and find_end, I got two desired elements of array. How
can I tell the distance between these two elements?

[Buster]

Re: template function help


"Rex_chaos" <rex_chaos@21cn .com> wrote in message
news:f7a7417.03 10021111.58cba3 e6@posting.goog le.com...[color=blue]
> Hi all,
> suppose A is an array. With the help of template function
> find_first_of and find_end, I got two desired elements of array. How
> can I tell the distance between these two elements?[/color]

If two pointers both point to objects in the same array, you can
subtract one from the other to get the distance. More generally,
the same syntax works for any pair of random-access iterators
to objects in the same container. Even more generally, look up
the standard C++ function 'std::distance' .

Regards,
Buster.

[WW]

Re: template function help

Rex_chaos wrote:[color=blue]
> Hi all,
> suppose A is an array. With the help of template function
> find_first_of and find_end, I got two desired elements of array. How
> can I tell the distance between these two elements?[/color]

With the std::distance function for example. Or if it is an array and will
always be an array you can simple subtract the begining from the end
pointer.

--
WW aka Attila