Merge storeEntities into a single thing

Add visitSum for tuples and makes storeEntities into a single lambda.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/util.hpp b/src/util.hpp
new file mode 100644
index 0000000..0ed260c
--- /dev/null
+++ b/src/util.hpp
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <tuple>
+
+namespace WebStat {
+	template<typename... T>
+	auto
+	visitSum(auto && visitor, const std::tuple<T...> & values)
+	{
+		return std::apply(
+				[&](auto &&... value) {
+					return (visitor(value) + ...);
+				},
+				values);
+	}
+}