[#BloombergLP-bdljsn-JsonNull-0b]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::JsonNull
:relfileprefix: ../../
:mrdocs:

This type represents the JSON null value. There is only 1 value of this type, so all objects compare equal, hash to the same value, etc.

== Synopsis

Declared in `<bdljsn_jsonnull.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class JsonNull;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdljsn/JsonNull-0b/print.adoc[`print`] 
| Write "null" to the specified output `stream`, and return a reference to `stream`.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdljsn/operator_not_eq-0c5.adoc[`operator!=`]
| Same as the related overload above for `operator!=`.
| xref:BloombergLP/bdljsn/operator_not_eq-0df.adoc[`operator!=`]
| Return whether `lhs` and `rhs` do not have the same value.
| xref:BloombergLP/bdljsn/operator_eq-032.adoc[`operator==`]
| Return `true` (unconditionally) as the specified `lhs` and `rhs` must have the same value.
| xref:BloombergLP/bdljsn/operator_eq-0ac.adoc[`operator==`]
| Same as the related overload above for `operator==`.
| xref:BloombergLP/bdljsn/swap-03c.adoc[`swap`]
| Exchange the values of the specified `a` and `b` objects.
|===


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