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std::shared_ptr::get

STD：：共享[医]PTR：：

T* get() const;​(until C++17)
element_type* get() const;​(since C++17)

返回存储的指针。

参数

%280%29

返回值

存储的指针。

例外

noexcept规格：

noexcept

注记

阿shared_ptr可以在存储指向另一个对象的指针时共享对象的所有权。get()返回存储的指针，而不是托管指针。

例

二次

#include <iostream>
#include <memory>
#include <string>
 
typedef std::shared_ptr<int> IntPtr;
 
void output(const std::string& msg, int* pInt)
{
    std::cout << msg << *pInt << "\n";
}
 
int main()
{
    int* pInt = new int(42
    IntPtr pShared(new int(42)
 
    output("Naked pointer ", pInt
    // output("Shared pointer ", pShared // compiler error
    output("Shared pointer with get() ", pShared.get()
 
    delete pInt;
}

二次

产出：

二次

Naked pointer 42
Shared pointer with get() 42

二次

另见

operator*operator->dereferences the stored pointer (public member function)

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在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。

http：//en.cppreference.com/w/cpp/Memory/Shared[医]PTR/GET

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