Return the number of times the option with the specified name has been entered on the command line, or 0 if name is not the name of a field in the command-line specification passed at construction to this object. Note that, in order to receive the valid number of occurrences, the command line must be successfully parsed.
Declared in <balcl_commandline.h>
int
numSpecified(std::string_view const& name) const;