dolfinx::fem::impl::FetchCells Concept Reference

Concepts for function that returns cell index. More...

Concept definition

template<typename F>
concept dolfinx::fem::impl::FetchCells =  requires(F&& f, std::span<const std::int32_t> v) {
  requires std::invocable<F, std::span<const std::int32_t>>;
  { f(v) } -> std::convertible_to<std::int32_t>;
}

Detailed Description

Concepts for function that returns cell index.