[#BloombergLP-bdljsn-Json-size]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/Json.adoc[Json]::size
:relfileprefix: ../../../
:mrdocs:

Return the number of elements in the `JsonObject` or `JsonArray` held by this object. The behavior is undefined unless `isArray() || isObject()` evaluates to true.

== Synopsis

Declared in `<bdljsn_json.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::size_t
size() const;
----


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