Initialise an Stl Vector of type T* from an array of type T
arrays, c++, c++11, stl, vector
Solution
You could use the standard library to do the iteration and pushing back for you:
std::transform(std::begin(m_aArr), std::end(m_aArr),
std::back_inserter(m_vecS), std::addressof<S>);
This will transform each of the elements in `m_aArr` by applying the `std::addressof<S>` function to them. Each of the transformed elements is then `push_back`ed into `m_vecS` by the `std::back_inserter` iterator.
To do this prior to C++11, you won't have access to `std::begin`, `std::end`, or `std::addressof`, so it'll look more like this:
std::transform(m_aArr, m_aArr + 256, std::back_inserter(m_vecS), boost::addressof<S>);
This uses `boost::addressof`.
Problem
if I have an array such as: ``` struct S {... }; S m_aArr[256]; ``` and I want to use this to construct a vector such as: ``` std::vector<S*> m_vecS; ``` Is there anyway to do this rather than looping through and pushing back `&m_aArr[i]` ? I understand that I cannot use the conventional method of using `std::begin` and `std::end` on the array since the vector is one of pointers and the original array is one of objects, and so we cannot just pass in a block of memory.