[#mp_units-utility-constrained-operator_inc-03]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::xref:mp_units/utility/constrained.adoc[constrained]::operator++
:relfileprefix: ../../../
:mrdocs:

Increment operator

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:mp_units/utility/constrained.adoc[constrained]&
operator++()
requires requires(T& v) {
      { ++v } ‐> std::same_as<T&>;
    };
----

== Return Value

Reference to the current object


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