From 2103e4b05f064f4b9384260f8ef0a91529cadf43 Mon Sep 17 00:00:00 2001
From: Philipp Jungkamp <Philipp.Jungkamp@opal-rt.com>
Date: Tue, 13 Jun 2023 17:01:55 +0200
Subject: [PATCH] add overloaded helper util for std::visit

Signed-off-by: Philipp Jungkamp <Philipp.Jungkamp@opal-rt.com>
---
 common/include/villas/utils.hpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/common/include/villas/utils.hpp b/common/include/villas/utils.hpp
index 64b7a728b..6736f60b7 100644
--- a/common/include/villas/utils.hpp
+++ b/common/include/villas/utils.hpp
@@ -194,6 +194,14 @@ bool isContainer();
 // Check if the process is running in a privileged environment (has SYS_ADMIN capability).
 bool isPrivileged();
 
+// helper type for std::visit
+template<class... Ts>
+struct overloaded : Ts... { using Ts::operator()...; };
+
+// explicit deduction guide (not needed as of C++20)
+template<class... Ts>
+overloaded(Ts...) -> overloaded<Ts...>;
+
 namespace base64 {
 
 using byte = std::uint8_t;