public member function
<memory>
void reset (X* p=0) throw();
Deallocate object pointed and set new value
Destructs the object pointed by theauto_ptrobject, if any, and deallocates its memory (by callingoperator delete). If a value for p is specified, the internal pointer is initialized to that value (otherwise it is set to the null pointer).
To only release the ownership of a pointer without destructing the object pointed by it, use member function release instead.
参数
- p
- Pointer to element. Its value is set as the new internal pointer's value for theauto_ptrobject.
X isauto_ptr's template parameter (i.e., the type pointed).
示例
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// auto_ptr::reset example
#include <iostream>
#include <memory>
int main () {
std::auto_ptr<int> p;
p.reset (new int);
*p=5;
std::cout << *p << '\n';
p.reset (new int);
*p=10;
std::cout << *p << '\n';
return 0;
}
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输出