Re: passing function object pointer to for_each argument
On 27 Sep, 21:50, Daniel Kr?gler <daniel.krueg...@googlemail.com>
wrote:
Your problem is "slicing" and it occurs, because all
algorithms expecting a function do take these by
value (There is only one exception: random_shuffle, because
the random number generator usually contains state).
Why doesn't the standard mandate a pass-by-reference semantics? Pass
by reference should have had avoided this problem to begin with rather
than using the solution got by applying a wrapper containing the
functor pointer member. This would have been fine even with function
pointers. It also fixes the well-known stateful functor problem with
remove_if. Would there be any problem if it were adopted instead of
pass-by-value parameter for the algorithms interface? Or is it too
late to change the interface? Or does does this change even break any
existing code for that matter?
Best regards!
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