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  1. #include <iostream>
  2.  
  3. class String
  4.  {
  5.      char*   data;
  6.      int     len;
  7.      public:
  8.          // Normal rule of three applied up here.
  9.          void swap(String& rhs) throw()
  10.          {
  11.             std::swap(data, rhs.data);
  12.             std::swap(len,  rhs.len);
  13.          }
  14.          String& operator=(const String& rhs) // Standard Copy and swap. 
  15.          {
  16.             //rhs.swap(*this);
  17.             return *this;
  18.          }
  19.  
  20.          // New Stuff here.
  21.          // Move constructor
  22.          String(String&& cpy) throw()    // ignore old throw construct for now.  
  23.             : data(NULL)
  24.             , len(0)
  25.          {
  26.             *this = std::forward<String>(cpy);
  27.          }
  28.          String& operator=(String&& rhs) noexcept 
  29.          {
  30.             rhs.swap(*this);
  31.             return *this;
  32.          }
  33. };
  34.  
  35. int main() 
  36. {
  37. 	return 0;
  38. }
Success #stdin #stdout 0s 3292KB
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https://ideone.com/g0y3PL
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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