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  1. #include <iostream>
  2. #include <utility>
  3. #include <vector>
  4. #include <string>
  5. int main()
  6. {
  7.     std::string str = "Hello";
  8.     std::vector<std::string> v;
  9.     //调用常规的拷贝构造函数，新建字符数组，拷贝数据
  10.     v.push_back(str);
  11.     std::cout << "After copy, str is \"" << str << "\"\n";
  12.     //调用移动构造函数，掏空str，掏空后，最好不要使用str
  13.     v.push_back(std::move(str));
  14.     std::cout << "After move, str is \"" << str << "\"\n";
  15.     std::cout << "The contents of the vector are \"" << v[0]
  16.                                          << "\", \"" << v[1] << "\"\n";
  17. }
Success #stdin #stdout 0s 4320KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
After copy, str is "Hello"
After move, str is ""
The contents of the vector are "Hello", "Hello"
https://ideone.com/pzsZUZ
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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