std::queue<T,Container>:: size
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C++
Containers library
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(C++11)
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(C++26)
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(C++26)
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(C++11)
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| Associative | ||||
| Unordered associative | ||||
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(C++11)
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(C++11)
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(C++11)
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(C++11)
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(C++23)
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(C++23)
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(C++23)
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(C++23)
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(C++20)
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(C++23)
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| Iterator invalidation | ||||
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| Non-member function table |
std::queue
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queue::size
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(C++23)
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(C++11)
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| Deduction guides (C++17) |
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size_type size
(
)
const
;
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Gibt die Anzahl der Elemente im Container-Adapter zurück. Entspricht:
return
c
.
size
(
)
.
Inhaltsverzeichnis |
Parameter
(keine)
Rückgabewert
Die Anzahl der Elemente im Container-Adapter.
Komplexität
Konstante.
Beispiel
Diesen Code ausführen
#include <cassert> #include <queue> int main() { std::queue<int> queue; assert(queue.size() == 0); const int count = 8; for (int i = 0; i != count; ++i) queue.push(i); assert(queue.size() == count); }
Siehe auch
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prüft, ob der Container-Adapter leer ist
(öffentliche Elementfunktion) |
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(C++17)
(C++20)
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gibt die Größe eines Containers oder Arrays zurück
(Funktionstemplate) |