[#mp_units-system_reference-operator_subs]
= xref:mp_units.adoc[mp_units]::xref:mp_units/system_reference.adoc[system_reference]::operator[]
:relfileprefix: ../../
:mrdocs:

Subscript operator

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template</* implementation-defined */ U>
[[nodiscard]]
constexpr
xref:mp_units/reference.adoc[reference<decltype(Q), U>]
operator[](U rhs) const;
----

== Return Value

Quantity reference type

== Parameters

[cols=2]
|===
| Name
| Description
| *rhs*
| The right operand
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#