如何从std :: vector构造Platform :: Array

Question

I thought it works like this

std::vector<char> array;
Platform::Array<char>^ data = ref new Platform::Array<char>(array, array.size());

but says "no instance of constructor matches the argument list"

Answer 1

You should send pointer to constructor of Platform::Array and std::vector is class, not array.

Platform::Array<char>^ data = ref new Platform::Array<char>(array.data(), 
array.size());

If C++11 is enabled, or

Platform::Array<char>^ data = ref new Platform::Array<char>(&array[0], 
array.size());

if not (it is UB to access first element in empty vector, so I have no idea about how we can get access to underlying array before C++11, when vector is empty).