C++

Reference

<memory>

unique_ptr

public member function
<memory>

std::unique_ptr::~unique_ptr

~unique_ptr();
Destroy unique_ptr
If the object is an empty unique_ptr (i.e., get()==nullptr), the destructor has no effect.

Otherwise, it deletes its owned object as if by calling get_deleter()(get())

Example

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// unique_ptr destructor example
#include <iostream>
#include <memory>

int main () {
  auto deleter = [](int*p){
    delete p;
    std::cout << "[deleter called]\n";
  };

  std::unique_ptr<int,decltype(deleter)> foo (new int,deleter);

  std::cout << "foo " << (foo?"is not":"is") << " empty\n";

  return 0;                        // [deleter called]
}

Output:
foo is not empty
[deleter called]


See also

unique_ptr::reset
Reset pointer (public member function)
unique_ptr::release
Release pointer (public member function)