23                                              const std::string& delimiter,
28                                       const std::string& delimiter) {  in Split()  argument
29   return Split(str, delimiter, true, true);  in Split()
33                                       const std::string& delimiter,  in Split()  argument
35   return Split(str, delimiter, trim_whitespaces, true);  in Split()
42     const std::string& delimiter,
48     const std::string& delimiter) {  in SplitAtFirst()  argument
49   return SplitAtFirst(str, delimiter, true);  in SplitAtFirst()
56                                 const std::string& delimiter,
62                          const std::string& delimiter,  in SplitAtFirst()  argument
65   return SplitAtFirst(str, delimiter, left_part, right_part, true);  in SplitAtFirst()
70 std::string JoinRange(const std::string& delimiter,  in JoinRange()  argument
78     result += delimiter;  in JoinRange()
85 std::string Join(const std::string& delimiter, const Container& strings) {  in Join()  argument
88   return JoinRange(delimiter, begin(strings), end(strings));  in Join()
91 inline std::string Join(const std::string& delimiter,  in Join()  argument
93   return JoinRange(delimiter, strings.begin(), strings.end());  in Join()
96 inline std::string Join(const std::string& delimiter,  in Join()  argument
99   return str1 + delimiter + str2;  in Join()