[#BloombergLP-bdljsn-Json-pushBack-04ff]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/Json.adoc[Json]::pushBack
:relfileprefix: ../../../
:mrdocs:

Append to the end of this `Json` object's array an element having value of the specified `string` by moving (in constant time) the contents of `string` to the new element and return a non‐`const` reference to this object. If `isNull()`, then the type is changed to array. `string` is left in a valid but unspecified state. This function does not participate in overload resolution unless the specified `t_STRING_TYPE` is `bsl::string`. The behavior is undefined unless `string` is valid UTF‐8 (see `bdlde::Utf8Util::isValid`). The behavior is undefined unless `isArray()` or `isNull()`.

== Synopsis

Declared in `<bdljsn_json.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_STRING_TYPE>
xref:BloombergLP/bdljsn/Json.adoc[Json]&
pushBack(xref:BloombergLP/bslmf/MovableRef_Deduced.adoc[BloombergLP::bslmf::MovableRef_Deduced<t_STRING_TYPE>] string)
requires bsl::is_same<t_STRING_TYPE,
                                         bsl::string>::value;
----


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