bsl::variant_size<variant<t_HEAD, t_TAIL...>>

Synopsis

Declared in <bslstl_variant.h>

template<
    class t_HEAD,
    class... t_TAIL>
struct variant_size<variant<t_HEAD, t_TAIL...>>
    : bsl::integral_constant<std::size_t, 1 + sizeof...(t_TAIL)>
    , bsl::integral_constant<size_t, 1 + sizeof...(t_TAIL)>

Base Classes

Name	Description
`bsl::integral_constant<std::size_t, 1 + sizeof...(t_TAIL)>`	Metafunction representing a compile-time constant of the specified (template parameter) `t_TYPE` with the specified (template parameter) `t_VALUE`.
`bsl::integral_constant<size_t, 1 + sizeof...(t_TAIL)>`	Metafunction representing a compile-time constant of the specified (template parameter) `t_TYPE` with the specified (template parameter) `t_VALUE`.

Type Aliases

Name	Description
`type`	Alias for this `integral_constant` specialization.
`value_type`

Member Functions

Name	Description
`operator()`	Return a copy of the template argument `t_VALUE`.
`operator value_type`

Static Data Members

Name
`value`