STL中string的扩展类string_ex,给出许多扩展的操作字符串的非常使用的成员函数-STL string of extensions string_ex given many strings to expand the operation of the very use of the function

STL中string的扩展类string_ex,给出许多扩展的操作字符串的非常使用的成员函数-STL string of extensions string_ex given many strings to expand the operation of the very use of the function