[#BloombergLP-baltzo-ZoneinfoCache-lookupZoneinfo]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/baltzo.adoc[baltzo]::xref:BloombergLP/baltzo/ZoneinfoCache.adoc[ZoneinfoCache]::lookupZoneinfo
:relfileprefix: ../../../
:mrdocs:

Return the address of the cached Zoneinfo for `timeZoneId`, or 0&period;

== Synopsis

Declared in `&lt;baltzo&lowbar;zoneinfocache&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/baltzo/Zoneinfo.adoc[Zoneinfo] const*
lookupZoneinfo(char const* timeZoneId) const;
----

== Description

Return the address of the non&hyphen;modifiable cached description of the time zone identified by the specified `timeZoneId`, and 0 if information for `timeZoneId` has not previously been cached (by a call to `getZoneinfo`)&period; If the returned address is non&hyphen;zero, the Zoneinfo object returned is guaranteed to be well&hyphen;formed (i&period;e&period;, `ZoneinfoUtil&colon;&colon;isWellFormed will return `true&apos; if called with the returned value), and remain valid for the lifetime of this object&period;

== Return Value

address of the cached Zoneinfo for `timeZoneId`, or 0

== Parameters

[cols="1,4"]
|===
| Name| Description
| *timeZoneId*
| time zone identifier
|===


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