From 25af8c9d8fbc3c1707002f82969c032b66156e13 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Thu, 26 Sep 2024 16:40:20 +0200
Subject: [PATCH] feat: `for_each` on `std::tuple` added

---
 src/core/include/mp-units/ext/algorithm.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/core/include/mp-units/ext/algorithm.h b/src/core/include/mp-units/ext/algorithm.h
index 564000ac..15e3ad7b 100644
--- a/src/core/include/mp-units/ext/algorithm.h
+++ b/src/core/include/mp-units/ext/algorithm.h
@@ -35,6 +35,8 @@ import std;
 #include <compare>
 #include <initializer_list>
 #include <iterator>
+#include <tuple>
+#include <utility>
 #endif
 #endif
 
@@ -150,4 +152,16 @@ constexpr ForwardIt2 swap_ranges(ForwardIt1 first1, ForwardIt1 last1, ForwardIt2
   return first2;
 }
 
+template<typename... Ts, typename F, std::size_t... Is>
+constexpr void for_each_impl(const std::tuple<Ts...>& t, F&& func, std::index_sequence<Is...>)
+{
+  (..., func(std::get<Is>(t)));
+}
+
+template<typename... Ts, typename F>
+constexpr void for_each(const std::tuple<Ts...>& t, F&& func)
+{
+  for_each_impl(t, std::forward<F>(func), std::index_sequence_for<Ts...>{});
+}
+
 }  // namespace mp_units::detail