for_each_index()

template<typename Context , typename Func , concepts::container Container>

constexpr auto kwk::for_each_index ( Context &  ctx, Func &&  f, Container &&  c  )

constexpr

Simple walkthrough over all elements of a container and their coordinates.

Applies the given function object f to every elements of a given kwk::container and their current coordinates. Elements are iterated in order of the optimal memory access.

Parameters

f	Function object, to be applied to an element of c and its coordinates. The signature of the function should be equivalent to the following: void f(T&& v, std::integral auto... is); with T convertible to the container's value_type.
c	A kwk::container on which elements f will be applied.

Returns

The function object f which could have been modified.

Example