diff --git a/src/str.cpp b/src/str.cpp
index 5ce25d90..85c9b0cf 100644
--- a/src/str.cpp
+++ b/src/str.cpp
@@ -32,7 +32,7 @@ using std::set;
 using std::string;
 using std::string_view;
 using std::vector;
-
+using nonstd::span;
 
 void
 str::split(const string_view  str_,
@@ -299,6 +299,10 @@ str::startswith(const string &str_,
                          std::string_view{prefix_});
 }
 
+bool
+str::startswith(const char *str_,
+                nonstd::span<std::string_view>
+
 bool
 str::endswith(const string &str_,
               const string &suffix_)