From 9b9a0960544bc056599d43b2c61a59c7906d0f29 Mon Sep 17 00:00:00 2001
From: Arsentiy Milchakov <milcars@mapswithme.com>
Date: Tue, 19 Nov 2019 11:45:46 +0300
Subject: [PATCH] [base] JoinAny signature is changed, template parameter is
 replaced by std::function

---
 base/string_utils.hpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/base/string_utils.hpp b/base/string_utils.hpp
index 0e72041c7c..a05e28e3c9 100644
--- a/base/string_utils.hpp
+++ b/base/string_utils.hpp
@@ -571,9 +571,10 @@ typename Container::value_type JoinStrings(Container const & container, Delimite
   return JoinStrings(begin(container), end(container), delimiter);
 }
 
-template <typename Iterator, typename Delimiter, typename Converter>
+template <typename Iterator, typename Delimiter>
 std::string JoinAny(Iterator first, Iterator last, Delimiter const & delimiter,
-                    Converter const & converter)
+                    std::function<
+                      std::string (typename Iterator::value_type const & v)> const & converter)
 {
   if (first == last)
     return {};