[#mp_units-utility-fill_t]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::fill_t
:relfileprefix: ../../
:mrdocs:

The fill character(s) of a `std‐format‐spec`, storing at most one Unicode code point.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename Char>
struct fill_t;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:mp_units/utility/fill_t/operator_assign.adoc[`operator=`] 
| Replaces the fill with the code point stored in `str.`
| xref:mp_units/utility/fill_t/data.adoc[`data`] 
| A pointer to the fill's code units.
| xref:mp_units/utility/fill_t/operator_subs-0a.adoc[`operator[]`] 
| Accesses the code unit at `index.`
| xref:mp_units/utility/fill_t/size.adoc[`size`] 
| The number of code units in the fill.
|===



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