23 General utilities library [utilities]

23.11 Smart pointers [smartptr]

23.11.1 Class template unique_­ptr [unique.ptr]

23.11.1.2 unique_­ptr for single objects [unique.ptr.single]

23.11.1.2.5 unique_­ptr modifiers [unique.ptr.single.modifiers]

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pointer release() noexcept;
1
#
Postconditions: get() == nullptr.
2
#
Returns: The value get() had at the start of the call to release.
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void reset(pointer p = pointer()) noexcept;
3
#
Requires: The expression get_­deleter()(get()) shall be well formed, shall have well-defined behavior, and shall not throw exceptions.
4
#
Effects: Assigns p to the stored pointer, and then if and only if the old value of the stored pointer, old_­p, was not equal to nullptr, calls get_­deleter()(old_­p).
[ Note
:
The order of these operations is significant because the call to get_­deleter() may destroy *this.
— end note
 ]
5
#
Postconditions: get() == p.
[ Note
:
The postcondition does not hold if the call to get_­deleter() destroys *this since this->get() is no longer a valid expression.
— end note
 ]
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void swap(unique_ptr& u) noexcept;
6
#
Requires: get_­deleter() shall be swappable ([swappable.requirements]) and shall not throw an exception under swap.
7
#
Effects: Invokes swap on the stored pointers and on the stored deleters of *this and u.