Create a variant object holding the alternative with index (template parameter) t_INDEX, direct‐initialized from the specified args. If this variant is allocator‐aware, the currently installed default allocator is used to supply memory. This constructor participates in overload resolution only if t_INDEX is a valid alternative index and the designated alternative is constructible from args. For simplicity of implementation, this method differs from the standard in the following ways: * constexpr is not implemented

Synopsis

Declared in <bslstl_variant.h>

template<
    std::size_t t_INDEX,
    class... t_ARGS>
requires (t_INDEX < 1 + sizeof...(t_TAIL)) &&
                  std::is_constructible<BSLSTL_VARIANT_TYPE_AT_INDEX(t_INDEX),
                                        t_ARGS...>::value
explicit
variant(
    bsl::in_place_index_t<t_INDEX>,
    t_ARGS&&... args);

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