[#mp_units-contains-0c8]
= xref:mp_units.adoc[mp_units]::contains
:relfileprefix: ../
:mrdocs:

Checks whether the type `T` matches the type of any of the non‐type template arguments `Vs`

== Synopsis

Declared in `<mp‐units/ext/type_traits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename T,
    auto Vs...>
[[nodiscard]]
consteval
bool
contains();
----

== Return Value

`true` if `T` matches the type of at least one of `Vs`, `false` otherwise

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Template Parameters

[cols="1,4"]
|===
| Name| Description
| *T*
| The type to look for among the types of `Vs`
| *Vs*
| The non‐type template arguments whose types are checked against `T`
|===


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