Function GetLength

util/string/join.h:47–51

namespace NPrivate {
    template <typename T>
    inline size_t GetLength(const T&) {
        // By default don't pre-allocate space when joining and appending non-string types.
        // This code can be extended by estimating stringified length for specific types (e.g. 10 for ui32).
        return 0;
    }

    template <>
    inline size_t GetLength(const TString& s) {