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basic_result(R &&)
Implicit value_type
constructor. Calls void on_result_construction(T *, U &&) noexcept
with this
and R
.
Requires: predicate::enable_value_converting_constructor<R>
is true.
Complexity: Same as for value_type
’s copy or move constructor. Constexpr, triviality and noexcept of underlying operations is propagated.