[#std-tuple_size]
= xref:std.adoc[std]::tuple_size
:relfileprefix: ../
:mrdocs:

Number of elements in a lite_tuple.

== Synopsis

Declared in `<folly/detail/tuple.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename... Ts>
struct tuple_size
    : std::integral_constant<size_t, sizeof...(Ts)>
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `std::integral_constant<size_t, sizeof...(Ts)>`
| 
|===


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