[#BloombergLP-balcl-OccurrenceInfo-2constructor-0d50]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balcl.adoc[balcl]::xref:BloombergLP/balcl/OccurrenceInfo.adoc[OccurrenceInfo]::OccurrenceInfo
:relfileprefix: ../../../
:mrdocs:

Construct an `OccurrenceInfo` object that describes a command‐line option that is optional but not hidden and has no default value, using the specified `basicAllocator` to supply memory. If `basicAllocator` is 0, the currently installed default allocator is used.

== Synopsis

Declared in `<balcl_occurrenceinfo.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
OccurrenceInfo(xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator);
----


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