[#mp_units-get_quantity_spec-03d]
= xref:mp_units.adoc[mp_units]::get_quantity_spec
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<mp‐units/framework/reference.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated("2.6.0: `Q` definition should not be marked `final`"), nodiscard]]
consteval
xref:mp_units/QuantitySpec.adoc[QuantitySpec] auto
get_quantity_spec(xref:mp_units/reference.adoc[reference])
requires std::is_final_v<Q>;
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]: 2.6.0: `Q` definition should not be marked `final`. Use of this entity is allowed but discouraged.
====
== Return Value

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

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