c++ - How do I write move constructor and assignment operator for a class which has a private object as property? -

i learned move constructors today. read this answer, , tried apply move constructor example in code.

class unicodestring {     public:         enum  endianness_type {little_endian = 0, big_endian = 1} endianness;         bool  replace_non_ascii_characters;         char  replace_non_ascii_characters_with;         float vector_reserve_coefficient;          unicodestring(unicodestring && other);          // ...          unicodestring & operator=(unicodestring other);          // ...      private:         std::vector<unicodechar> ustring;          // ... }  unicodestring::unicodestring(unicodestring && other) {     this->replace_non_ascii_characters      = other.replace_non_ascii_characters;     this->replace_non_ascii_characters_with = other.replace_non_ascii_characters_with;     this->vector_reserve_coefficient        = other.vector_reserve_coefficient;     this->endianness                        = other.endianness;     this->ustring = ????? }  unicodestring & unicodestring::operator=(unicodestring other) {     std::swap(?????, ?????);     return *this; } 

however, unlike in example, class unicodestring not merely contain simple c array. contains std::vector<> object elements instances of class wrote.

first of all, in move constructor, how steal ustring vector of other object passed r-value?

secondly, in assignment operator, how efficiently swap references of ustrings of main unicodestring object , 1 passed r-value? notice ustring private property, therefore cannot directly accessed object.

first of all, in move constructor, how steal ustring vector of other object passed r-value?

just move() std::vector moveable (operator=(vector&&)):

this->ustring = std::move(other.ustring); 

secondly, in assignment operator, how efficiently swap references of ustrings of main unicodestring object , 1 passed r-value? notice ustring private property, therefore cannot directly accessed object.

note private applies class, not instance of class. meaning other instances of same class can access private members of instance. so, use std::move(other.ustring) before.