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deductiongu...td::weak_ptr(3) C++ Standard Libarydeductiongu...td::weak_ptr(3)

NAME
       deductionguidesforstd::weak_ptr - deductionguidesforstd::weak_ptr

Synopsis
	  Defined in header <memory>
	  template<class T>				(since C++17)
	  weak_ptr(std::shared_ptr<T>) -> weak_ptr<T>;

	  One deduction	guide is provided for std::weak_ptr to account for the
       edge case
	  missed by the	implicit deduction guides.

Example
       // Run this code

	#include <memory>

	int main()
	{
	    auto p = std::make_shared<int>(42);
	    std::weak_ptr w{p};	   // explicit deduction guide is used in this
       case
	}

http://cppreference.com		  2022.07.31	 deductiongu...td::weak_ptr(3)

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