Construct an optional, non‐hidden OccurrenceInfo with no default value.

Synopsis

Declared in <balcl_occurrenceinfo.h>

OccurrenceInfo();

Description

Construct an OccurrenceInfo object that describes a command‐line option that is optional but not hidden (i.e., `e_OPTIONAL == occurrenceType()`) and has no default value. Optionally specify a basicAllocator used to supply memory. If basicAllocator is 0, the currently installed default allocator is used.

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