std::shared_ptr::operator==, !=, <, <=, >, >=
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| template <class T, class U> bool operator==(const shared_ptr<T>& lhs, const shared_ptr<U>& rhs); |
(1) | |
| template <class T, class U> bool operator!=(const shared_ptr<T>& lhs, const shared_ptr<U>& rhs); |
(2) | |
| template <class T, class U> bool operator<(const shared_ptr<T>& lhs, const shared_ptr<U>& rhs); |
(3) | |
| template <class T, class U> bool operator>(const shared_ptr<T>& lhs, const shared_ptr<U>& rhs); |
(4) | |
| template <class T, class U> bool operator<=(const shared_ptr<T>& lhs, const shared_ptr<U>& rhs); |
(5) | |
| template <class T, class U> bool operator>=(const shared_ptr<T>& lhs, const shared_ptr<U>& rhs); |
(6) | |
| template <class T> bool operator==(const shared_ptr<T>& lhs, std::nullptr_t rhs); |
(7) | |
| template <class T> bool operator==(std::nullptr_t lhs, const shared_ptr<T>& rhs); |
(8) | |
| template <class T> bool operator!=(const shared_ptr<T>& lhs, std::nullptr_t rhs); |
(9) | |
| template <class T> bool operator!=(std::nullptr_t lhs, const shared_ptr<T>& rhs); |
(10) | |
| template <class T> bool operator<(const shared_ptr<T>& lhs, std::nullptr_t rhs); |
(11) | |
| template <class T> bool operator<(std::nullptr_t lhs, const shared_ptr<T>& rhs); |
(12) | |
| template <class T> bool operator<=(const shared_ptr<T>& lhs, std::nullptr_t rhs); |
(13) | |
| template <class T> bool operator<=(std::nullptr_t lhs, const shared_ptr<T>& rhs); |
(14) | |
| template <class T> bool operator>(const shared_ptr<T>& lhs, std::nullptr_t rhs); |
(15) | |
| template <class T> bool operator>(std::nullptr_t lhs, const shared_ptr<T>& rhs); |
(16) | |
| template <class T> bool operator>=(const shared_ptr<T>& lhs, std::nullptr_t rhs); |
(17) | |
| template <class T> bool operator>=(std::nullptr_t lhs, const shared_ptr<T>& rhs); |
(18) | |
Vergleicht zwei
shared_ptr<T> Objekten oder vergleicht shared_ptr<T> mit einem Null-Zeiger .Original:
Compares two
shared_ptr<T> objects or compares shared_ptr<T> with a null pointer.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Beachten Sie, dass die Vergleichsoperatoren für
shared_ptr einfach vergleichen Zeigerwerte; die eigentlichen Objekte verwiesen wird, sind nicht verglichen. Nachdem operator< für shared_ptr definierten ermöglicht shared_ptrs als Schlüssel in assoziativen Containern verwendet werden, wie std::map und std::set .Original:
Note that the comparison operators for
shared_ptr simply compare pointer values; the actual objects pointed to are not compared. Having operator< defined for shared_ptr allows shared_ptrs to be used as keys in associative containers, like std::map and std::set.The text has been machine-translated via Google Translate.
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Inhaltsverzeichnis |
[Bearbeiten] Parameter
| lhs | - | die linke
shared_ptr zu vergleichen Original: the left-hand shared_ptr to compare The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| rhs | - | die rechte
shared_ptr zu vergleichen Original: the right-hand shared_ptr to compare The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[Bearbeiten] Rückgabewert
1) lhs.get() == rhs.get()
2) !(lhs == rhs)
3)std::less<V>()(lhs.get(), rhs.get()), wobei V die zusammengesetzten Zeiger type
von T * und U *
| This section is incomplete Reason: needs definition from §5.9/2) |
Original:
std::less<V>()(lhs.get(), rhs.get()), where V is the composite pointer type
of T* and U*
| This section is incomplete Reason: needs definition from §5.9/2) |
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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4) rhs < lhs
5) !(rhs < lhs)
6) !(lhs < rhs)
7) !lhs
8) !rhs
9) (bool)lhs
10) (bool)rhs
11) std::less<T*>()(lhs.get(), nullptr)
12) std::less<T*>()(nullptr, rhs.get())
13) nullptr < lhs
14) rhs < nullptr
15) !(nullptr < lhs)
16) !(rhs < nullptr)
17) !(lhs < nullptr)
18) !(nullptr < rhs)
[Bearbeiten] Ausnahmen
[Bearbeiten] Beispiel
| This section is incomplete Reason: no example |
[Bearbeiten] Siehe auch
| liefert einen Zeiger auf das verwaltete Objekt (öffentliche Elementfunktion) | |
