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    std::shared_ptr::use_count

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    long use_count()const;

    Returns the number of different shared_ptr instances (this included) managing the current object. If there is no managed object, ​0​ is returned.

    Inhaltsverzeichnis

    [Bearbeiten]Parameter

    (None)
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    (none)
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    [Bearbeiten]Rückgabewert

    the number of shared_ptr instances managing the current object or ​0​ if there is no managed object.

    [Bearbeiten]Beispiel

    #include <memory> #include <iostream>    void fun(std::shared_ptr<int> sp){std::cout<<"fun: sp.use_count() == "<< sp.use_count()<<std::endl;}   int main(){std::shared_ptr<int> sp1 {std::make_shared<int>(5)};std::cout<<"sp1.use_count() == "<< sp1.use_count()<<std::endl;   fun(sp1);}

    Output: 

    sp1.use_count() == 1 fun: sp.use_count() == 2

    [Bearbeiten]Siehe auch

    		 prüft, ob das verwaltete Objekt nur durch die aktuelle shared_ptr Instanz verwaltet wird
    (öffentliche Elementfunktion)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/memory/shared_ptr/use_count&oldid=27304“
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