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Checks if *this is the only shared_ptr instance managing the current object, i.e. whether use_count() == 1.
Parameters
(none).
Return value
true if *this is the only shared_ptr instance managing the current object, false otherwise.
Exceptions
noexcept specification: noexceptExample
1 2 3 4 5 6 7 8 9 10 11 12 | #include <memory> #include <iostream> int main() { auto sp1 = std::make_shared<int>(5); std::cout << std::boolalpha; std::cout << "sp1.unique() == " << sp1.unique() << '\n'; std::shared_ptr<int> sp2 = sp1; std::cout << "sp1.unique() == " << sp1.unique() << '\n'; } |
Output:
1 2 | sp1.unique() == truesp1.unique() == false |
See also
returns the number of shared_ptr objects referring to the same managed object (public member function) |
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