add times.hpp.

Author: robertshepherdcpp

times.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include<utility>
+#include<cstddef>
+
+namespace mlib
+{
+    // this allows no recursion
+    struct callable_wrapper
+    {
+        constexpr callable_wrapper() {}
+
+        constexpr auto operator()(auto callable, std::size_t index)
+        {
+            callable();
+        }
+    };
+
+    template<auto T>
+    struct times
+    {
+        constexpr auto operator()(auto callable)
+        {
+            [&] <std::size_t... indexes>(std::index_sequence<indexes...>)
+            {
+                (callable_wrapper{}(callable, indexes), ...);
+            }(std::make_index_sequence<T>{});
+        }
+    };
+} // namespace mlib