[#ForEachBlockFilterIndex]
= ForEachBlockFilterIndex
:mrdocs:

Iterate over all running block filter indexes, invoking fn on each.

== Synopsis

Declared in `<index/blockfilterindex.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
ForEachBlockFilterIndex(std::function<void(xref:BlockFilterIndex.adoc[BlockFilterIndex]&)> fn);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fn*
| Callback invoked with each running index.
|===


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