A set is mostly something you will check that data is in it.
So I do not see the point of using one here... You'll have your functions and you'll store them in the set, and after that, what ? You just iterate on them ?
For your question, a element of a set should have a way to generate a hash and an operator==()
. The second is not provided for std::function
and thus you wouldn't be able to check that your function is really in the set.
So even if you find a way to generate an hash from the function, you would be stuck... And I do not see how to meet the hash requirement.
Why not simply use a std::vector
?