[#CBloomFilter-contains-0f]
= xref:CBloomFilter.adoc[CBloomFilter]::contains
:relfileprefix: ../
:mrdocs:

Test whether a raw key may be in the filter.

== Synopsis

Declared in `<common/bloom.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
contains(std::span<unsigned char const> vKey) const;
----

== Return Value

true if the key may be present (subject to false positives).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *vKey*
| The bytes to test.
|===


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