split_string_to_unsigned: use string_view

Change-Id: I40a4f6be0ed1cda1df1ca529fa16f3a61d4d93db

src/string_utils.cpp

@@ -112,7 +112,7 @@ trim(std::string_view s)
 }
 
 std::vector<unsigned>
-split_string_to_unsigned(const std::string& str, char delim)
+split_string_to_unsigned(std::string_view str, char delim)
 {
     std::vector<unsigned> output;
     for (auto first = str.data(), second = str.data(), last = first + str.size(); second != last && first != last; first = second + 1) {

src/string_utils.h

@@ -172,7 +172,7 @@ std::vector<std::string_view> split_string(std::string_view str, std::string_vie
     return output;
 }
 
-std::vector<unsigned> split_string_to_unsigned(const std::string& s, char sep);
+std::vector<unsigned> split_string_to_unsigned(std::string_view s, char sep);
 
 void string_replace(std::string& str, const std::string& from, const std::string& to);