From 033916a4f9d3fd19659a3bc8c5737f52d327b3d4 Mon Sep 17 00:00:00 2001
From: Alberto Sartori <alberto.sartori@huawei.com>
Date: Thu, 7 Apr 2022 15:13:33 +0200
Subject: refactor FileRoot::DirectoryEntries

... to foster the implementation of the built-in target "TREE"
---
 src/utils/cpp/concepts.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/utils/cpp/concepts.hpp')

diff --git a/src/utils/cpp/concepts.hpp b/src/utils/cpp/concepts.hpp
index 597179e1..04b2bfcc 100644
--- a/src/utils/cpp/concepts.hpp
+++ b/src/utils/cpp/concepts.hpp
@@ -66,4 +66,10 @@ concept ClockHasFromTime = requires(std::time_t const t) {
     T::from_time_t(t);
 };
 
+template <typename T>
+concept StrMapConstForwardIterator = requires(T const c) {
+    { (*c).first }
+    ->same_as<std::string const>;
+};
+
 #endif  // INCLUDED_SRC_UTILS_CPP_CONCEPTS_HPP
-- 
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