long use_count() const noexcept;
Returns: 0 if *this is empty; otherwise, the number of shared_ptr instances that share ownership with *this.
[ Note: use_count() is not necessarily efficient. — end note ]
bool expired() const noexcept;
Returns: use_count() == 0.
[ Note: expired() may be faster than use_count(). — end note ]
shared_ptr<T> lock() const noexcept;
Returns: expired() ? shared_ptr<T>() : shared_ptr<T>(*this), executed atomically.
template<class U> bool owner_before(shared_ptr<U> const& b) const; template<class U> bool owner_before(weak_ptr<U> const& b) const;
Returns: An unspecified value such that
x.owner_before(y) defines a strict weak ordering as defined in [alg.sorting];
under the equivalence relation defined by owner_before, !a.owner_before(b) && !b.owner_before(a), two shared_ptr or weak_ptr instances are equivalent if and only if they share ownership or are both empty.
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4