[#TxGraph-Ref-2constructor-06]
= xref:TxGraph.adoc[TxGraph]::xref:TxGraph/Ref.adoc[Ref]::Ref
:relfileprefix: ../../
:mrdocs:

Construct an empty Ref&period; It can be initialized through TxGraph&colon;&colon;AddTransaction&period;

== Synopsis

Declared in `&lt;txgraph&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
Ref() noexcept = default;
----


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