是否可以将函数指针保留在std :: vector中？

Question

Is is possible to keep function pointers in an std::vector? And call each function in an iterator loop ?

Ref : http://en.wikipedia.org/wiki/Function_pointer

Answer 1

Is it possible to keep function pointers in an std::vector ?

Sure, as long as they are all of the same type:

void foo()
{
    std::cout << "inside foo\n";
}

void bar()
{
    std::cout << "inside bar\n";
}

void baz()
{
    std::cout << "inside baz\n";
}

std::vector<void(*)()> fps { foo, bar, baz };

And call each function in an iterator loop?

No problem at all:

for (auto&& fp : fps)
{
    fp();
}

Answer 2

You might also want to consider the Boost Signals2 library. You can register any number of function pointers (AKA 'slots') to a 'signal' and have each one of them called by simply calling the 'signal' itself. The library takes care of managing the list of function pointers and iterating through each of them as necessary.