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rule-of-five.cpp
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rule-of-five.cpp
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/*
*
* rule-of-five.cpp
*
*/
#include <iostream>
#include <cstring>
#include <string>
#include <algorithm>
using std::cout;
// using std::basic_string;
using namespace std;
// See https://stackoverflow.com/questions/3106110/what-are-move-semantics
int main (int argc, char* argv[]) {
return 0;
}
class string
{
char* data;
public:
string(const char* p)
{
size_t size = strlen(p) + 1;
data = new char[size];
memcpy(data, p, size);
}
~string()
{
delete[] data;
}
// copy constructor
string(const string& that)
{
size_t size = strlen(that.data) + 1;
data = new char[size];
memcpy(data, that.data, size);
}
// move constructor
string(string&& that) // string&& is an rvalue reference to a string
{
data = that.data;
that.data = nullptr;
}
// Assignment operator
string& operator=(string that)
{
std::swap(data, that.data);
return *this;
}
};