why not overload count

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C++

STL

we have count() and count_if() in STL, why not just overload the count() function like adjacent_find() does? Thanks!

Posted 21-Mar-11 3:50am

leezzz

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Nemanja Trifunovic · Accepted Answer · 2011-03-21T07:46:00

The difference is that count and count_if have the same number of parameters (3) and adjacent_find has 2 parameters in the non-predicate version vs 3 in the predicate one.

Of course, that wouldn't be a problem with non-template functions, or with template concepts (voted and removed from C++ 0x), but with the current implementation of C++ function templates it is.