[#absl-void_t]
= xref:absl.adoc[absl]::void_t
:relfileprefix: ../
:mrdocs:

Ignores the type of any its arguments and returns `void`. In general, this metafunction allows you to create a general case that maps to `void` while allowing specializations that map to specific types.

== Synopsis

Declared in `<absl/meta/type_traits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename... Ts>
using void_t [[deprecated("Use std::void_t instead.")]] = /* implementation-defined */::type;
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]: Use std::void_t instead.. Use of this entity is allowed but discouraged.
====
== Description

This metafunction is a workaround for some implementations of `std::void_t` that evaluate to `void` prematurely, causing partial specializations to appear duplicated (and thus invalid) to the compiler prior to substitution taking place. Whenever possible, use `std::void_t` instead.


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