[#CTxOut-IsNull]
= xref:CTxOut.adoc[CTxOut]::IsNull
:relfileprefix: ../
:mrdocs:

Returns true when the output holds no value.

== Synopsis

Declared in `<primitives/transaction.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
IsNull() const;
----

== Return Value

True if the value is the null sentinel (‐1).


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