std::projected_value_t(3) C++ Standard Libary std::projected_value_t(3) NAME std::projected_value_t - std::projected_value_t Synopsis Defined in header <iterator> template< std::indirectly_readable I, std::indirectly_regular_unary_invocable<I> Proj > using projected_value_t = (since C++26) std::remove_cvref_t<std::invoke_result<Proj&, std::iter_value_t<I>&>>; The alias template projected_value_t obtains the value type by stripping any reference and its topmost cv-qualifiers of the result type of applying Proj to std::iter_value_t<I>&. projected_value_t is used to determine the default value type in some algorithms such as ranges::contains. Template parameters I - an indirectly readable type Proj - projection applied to an lvalue reference to value type of I Notes Feature-test macro Value Std Feature de- fault template type __cpp_lib_default_template_type_for_algorithm_values 202403L (C++26) for algorithm values using std::pro- jected_value_t Example This section is incomplete Reason: no example See also indirect_result_t computes the result of invoking a callable object on the result of (C++20) dereferencing some set of indirectly_readable types (alias template) projected helper template for specifying the constraints on al- gorithms that (C++20) accept projections (class template) Category: * Todo no example http://cppreference.com 2024.06.10 std::projected_value_t(3)
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