[#nlohmann-basic_json-0e-operator_plus_eq-05]
= xref:nlohmann.adoc[nlohmann]::xref:nlohmann/basic_json-0e.adoc[basic&lowbar;json&lt;&gt;]::operator&plus;&equals;
:relfileprefix: ../../
:mrdocs:

Addition assignment operator

== Synopsis

Declared in `&lt;nlohmann&sol;json&period;hpp&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:nlohmann/basic_json-0e/reference.adoc[reference]
operator&plus;&equals;(xref:nlohmann/basic_json-00.adoc[basic&lowbar;json]&& val);
----

== Return Value

the type of an element reference

== Parameters

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


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