[#mp_units-utility-fill_t-operator_subs-0a]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::xref:mp_units/utility/fill_t.adoc[fill_t]::operator[]
:relfileprefix: ../../../
:mrdocs:

Accesses the code unit at `index.`

== Synopses

Declared in `<mp‐units/utility/format.h>`

Accesses the code unit at `index.`


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
constexpr
Char&
xref:mp_units/utility/fill_t/operator_subs-08.adoc[operator[]](std::size_t index);
----

[.small]#xref:mp_units/utility/fill_t/operator_subs-08.adoc[_» more..._]#

Accesses the code unit at `index.`


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
constexpr
Char const&
xref:mp_units/utility/fill_t/operator_subs-00.adoc[operator[]](std::size_t index) const;
----

[.small]#xref:mp_units/utility/fill_t/operator_subs-00.adoc[_» more..._]#

== Return Value

a reference to the code unit at `index`

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

[cols="1,4"]
|===
| Name| Description
| *index*
| the position of the code unit
|===


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