[#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 non‐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`). If the returned address is non‐zero, the Zoneinfo object returned is guaranteed to be well‐formed (i.e., `ZoneinfoUtil::isWellFormed will return `true' if called with the returned value), and remain valid for the lifetime of this object.

== Synopsis

Declared in `<baltzo_zoneinfocache.h>`

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


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