bsl::get_if

Synopses

Declared in <bslstl_variant.h>

Return a pointer to the t_TYPE alternative in obj if active.

template<
    class t_TYPE,
    class t_HEAD,
    class... t_TAIL>
add_pointer<t_TYPE>::type
get_if(variant<t_HEAD, t_TAIL...>* obj) noexcept;

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Return a pointer to the alternative at index t_INDEX, or null.

template<
    std::size_t t_INDEX,
    class t_HEAD,
    class... t_TAIL>
add_pointer<variant_alternative<t_INDEX, variant<t_HEAD, t_TAIL...>>::type>::type
get_if(variant<t_HEAD, t_TAIL...>* obj) noexcept;

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Return a pointer to the t_TYPE alternative in obj if active.

template<
    class t_TYPE,
    class t_HEAD,
    class... t_TAIL>
add_pointer<t_TYPE const>::type
get_if(variant<t_HEAD, t_TAIL...> const* obj) noexcept;

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Return a pointer to the alternative at index t_INDEX in obj, or null.

template<
    std::size_t t_INDEX,
    class t_HEAD,
    class... t_TAIL>
add_pointer<variant_alternative<t_INDEX, variant<t_HEAD, t_TAIL...>>::type const>::type
get_if(variant<t_HEAD, t_TAIL...> const* obj) noexcept;

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