Zip_with

Include <mln/core/ranges/view/zip_with.hpp>

template<class Func>
auto view::zip_with(Func fun, Ranges... rngs)

Parameters:

• fun – Function to use to zip all current element of the ranges

• rngs – Input ranges

zip_with returns a view of the input ranges where each element is the result of fun invoked with each current input elements. This view preserves the following properties:

Properties	rngs…	zip_with(fun, rngs…)
Segmented	X	X
Forward	X	X
Reversible	X	X
Bidirectional	X
Random Access	X
Contiguous	X
Writable	X*	X*

(*): onlt if fun is a projection.

Examples

• Sum 2 set of coordinates:

  mln::box2d box1 = {{0,0}, {2,3}};
  mln::box2d box2 = {{1,1}, {3,4}};
  auto zipper = [](auto a, auto b){ return a[0]*b[0] + a[1]*b[1]; }
  mln_foreach(auto p, ranges::view::zip_with(zipper, box1, box2))
    std::cout << p << ",";
  

  Outputs:

  (0,0),(0,2),(0,6),(2,0),(2,2),(2,6),