[#BloombergLP-ball-CategoryManager_RadixTree-eraseChildrenOfPrefix]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/CategoryManager_RadixTree.adoc[CategoryManager_RadixTree]::eraseChildrenOfPrefix
:relfileprefix: ../../../
:mrdocs:

Remove all children of the entry matching the specified `prefix`.

== Synopsis

Declared in `<ball_categorymanager_radixtree.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/ball/CategoryManager_RadixTree/size_type.adoc[CategoryManager_RadixTree<t_VALUE>::size_type]
eraseChildrenOfPrefix(std::string_view const& prefix);
----

== Description

Do not remove the entry with the prefix itself. If unused (no value, no children) nodes remain remove those, too. If no entry exists for `prefix` remove nothing. Return the number of entries removed.

== Return Value

number of entries removed

== Parameters

[cols="1,4"]
|===
| Name| Description
| *prefix*
| key of the entry whose children are removed
|===


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