absl::optional_ref::optional_ref

Converts from an optional_ref<U> when U* converts to T*.

Synopsis

Declared in <absl/types/optional_ref.h>

template<
    typename U,
    typename = EnableIfConvertibleFrom<U>>
constexpr
optional_ref(optional_ref<U> input);

Parameters

NameDescription
inputThe source reference to convert from.