[#wallet-DatabaseBatch-Exists]
= xref:wallet.adoc[wallet]::xref:wallet/DatabaseBatch.adoc[DatabaseBatch]::Exists
:relfileprefix: ../../
:mrdocs:

Returns whether a record exists for a key.

== Synopsis

Declared in `<wallet/db.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename K>
bool
Exists(K const& key);
----

== Return Value

true if a record exists for the key.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| The key to look up.
|===


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