I want to use an function that requires the parameter to be an Iterator, is possible to apply it with an STL algoritm like std::for_each ?
std::vector<int> v({0,1,2,3,4});
std::for_each(v.begin(), v.end(), [](std::vector<int>::iterator it)
{
// Do something that require using the iterator
// .....
});
You could easily make your own "implementation" that passes an iterator to the function.
namespace custom {
template<class InputIterator, class Function>
Function for_each(InputIterator first, InputIterator last, Function fn)
{
while (first!=last) {
fn (first);
++first;
}
return fn;
}
}
std::vector<int> v({0,1,2,3,4});
custom::for_each(v.begin(), v.end(),
[](std::vector<int>::iterator it)
{
std::cout << *it << std::endl;
});
I don't see the advantage of this over a simple loop:
for (auto it = v.begin(); it != v.end(); ++it)
std::for_eachwill pass an object from the container, not iterator. You should use explicit cycle that uses iterators. Make a function (probably template) from it.