[#bsl-variant_size-02]
= xref:bsl.adoc[bsl]::xref:bsl/variant_size-07.adoc[variant_size]<t_BSL_VARIANT const>
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_BSL_VARIANT>
struct xref:bsl/variant_size-07.adoc[variant_size]<t_BSL_VARIANT const>
    : xref:bsl/variant_size-07.adoc[variant_size<t_BSL_VARIANT>]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/variant_size-07.adoc[variant_size<t_BSL_VARIANT>]`
| This metafunction calculates the number of alternatives in the (possibly cv‐qualified) `bsl::variant` type of (template parameter) `t_BSL_VARIANT`. The primary template is not defined.
|===


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