Ctad

[Jaybro]

Added support for class template argument deduction (CTAD). This means that the space type can now be deduced from the argument given to the constructor of the KdTree:

std::size_t max_leaf_size = 10;
std::vector<std::array<double, 2>> points{{0.0, 1.0}, {2.0, 3.0}};

// Deduces to:
// pico_tree::KdTree<std::reference_wrapper<std::vector<std::array<double, 2>>>>
pico_tree::KdTree tree(std::ref(points), max_leaf_size);

Using the previous auto deduction method, we still have to specify the space type when we want to change any of the other template arguments, such as the metric type. In this case we can use the MakeKdTree method to make life a bit easier.

std::size_t max_leaf_size = 10;
std::vector<std::array<double, 2>> points{{0.0, 1.0}, {2.0, 3.0}};

auto tree = 
    pico_tree::MakeKdTree<pico_tree::LInf>(std::ref(points), max_leaf_size);