BloombergLP::bslstl::Variant_CountCVType

Synopsis

Declared in <bslstl_variant.h>

template<
    class t_TYPE,
    class t_HEAD = BSLSTL_VARIANT_NOT_A_TYPE,
    class... t_TAIL>
struct Variant_CountCVType
    : bsl::integral_constant<size_t, bsl::is_same<typename bsl::remove_cv<t_TYPE>::type, typename bsl::remove_cv<t_HEAD>::type>::value + Variant_CountCVType<t_TYPE, t_TAIL...>::value>

Description

This component-private metafunction calculates the number of times (template parameter) t_TYPE occurs in (template parameters) t_HEAD, t_TAIL..., where two types that differ only in top-level cv-qualification are considered to be the same.

Base Classes

Name	Description
`bsl::integral_constant<size_t, bsl::is_same<typename bsl::remove_cv<t_TYPE>::type, typename bsl::remove_cv<t_HEAD>::type>::value + Variant_CountCVType<t_TYPE, t_TAIL...>::value>`	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`	Alias for the (template parameter) `t_TYPE`.

Member Functions

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

Static Data Members

Name	Description
`value`	The compile-time constant value of this metafunction.

Specializations

Name	Description
`Variant_CountCVType<t_TYPE, BSLSTL_VARIANT_NOT_A_TYPE>`	Specialization for purposes of the sim_cpp11_features.pl script.