20 General utilities library [utilities]

20.11 Smart pointers [smartptr]

20.11.1 Class template unique_­ptr [unique.ptr] Default deleters [unique.ptr.dltr] default_­delete [unique.ptr.dltr.dflt]

namespace std {
  template<class T> struct default_delete {
    constexpr default_delete() noexcept = default;
    template<class U> default_delete(const default_delete<U>&) noexcept;
    void operator()(T*) const;
template<class U> default_delete(const default_delete<U>& other) noexcept;
Effects: Constructs a default_­delete object from another default_­delete<U> object.
Remarks: This constructor shall not participate in overload resolution unless U* is implicitly convertible to T*.
void operator()(T* ptr) const;
Effects: Calls delete on ptr.
Remarks: If T is an incomplete type, the program is ill-formed.