C++ 模板写的短小字符串类，用于替换字符数组和std::string

//短小字符串类 template<size_t N> struct TinyString { TinyString(); template<size_t K> TinyString(const TinyString<K>& str); TinyString(size_t n, char c); TinyString(const char* s, size_t n=0); TinyString(const std::string& str); template<size_t K> TinyString& operator = (const TinyString<K>& str); TinyString& operator = (const std::string& str); TinyString& operator = (const char* s); TinyString& operator = (char ch); template<size_t K> TinyString& operator += (const TinyString<K>& other); bool empty() const { return len == 0; } int size() const { return len; } int obj_size() const { return sizeof(*this); } const char* GetData()const { return buffer; } const char* c_str()const { return buffer; } bool operator == (const TinyString& other) const; bool operator < (const TinyString& other) const; operator std::string() const; //转为字符串 std::string ToString()const; //转为字符串 template<size_t K> friend std::ostream & operator<< (std::ostream& os, const TinyString<K>& str); template<size_t K, size_t L> friend bool operator == (const TinyString<K>& s1, const TinyString<L>& s2); //...... uint8_t len; char buffer[N-1]; }; typedef TinyString<8> TinyStr8; typedef TinyString<16> TinyStr16; typedef TinyString<32> TinyStr32; typedef TinyString<1024> TinyStr1K; typedef TinyString<4096> TinyStr4K;