[#BloombergLP-bdlcc-StripedUnorderedMap-update]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlcc.adoc[bdlcc]::xref:BloombergLP/bdlcc/StripedUnorderedMap.adoc[StripedUnorderedMap]::update
:relfileprefix: ../../../
:mrdocs:

Call `visitor` on the element having `key`, if present.

== Synopsis

Declared in `<bdlcc_stripedunorderedmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
update(
    KEY const& key,
    xref:BloombergLP/bdlcc/StripedUnorderedMap/VisitorFunction.adoc[VisitorFunction] const& visitor);
----

== Description

That is: ` bool visitor(&value, key); ` Return the number of elements updated or ‐1 if `visitor` returned `false`. `visitor` has exclusive access (i.e., write access) the element for during its invocation. The behavior is undefined if hash map manipulators and `getValue*` methods are invoked from within `visitor`, as it may lead to a deadlock.

DEPRECATED: Use `visit(key, visitor)` instead.

== Return Value

the number of elements updated, or ‐1 if `visitor` returned `false`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| key of the element to visit
| *visitor*
| functor invoked with the address of the value
|===


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