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deductionguidesforstd::reference_wrapper(3) C++ Standard Libary deductionguidesforstd::reference_wrapper(3)

NAME

deductionguidesforstd::reference_wrapper - deductionguidesforstd::reference_wrapper

Synopsis


Defined in header <functional>
template< typename T > (since C++17)
reference_wrapper( T& ) -> reference_wrapper<T>;


One deduction guide is provided for std::reference_wrapper to support deduction of
the sole class template parameter.

Example


This section is incomplete
Reason: no example


Defect reports


The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.


DR Applied to Behavior as published Correct behavior
LWG 2981 C++17 a redundant deduction guide from removed
reference_wrapper<T> was provided
LWG 2993 C++17 defect resolution removed a constructor added deduction guide
used for class template argument deduction to compensate

Category:


* Todo no example

2024.06.10 http://cppreference.com