| Function setRequired Sets whether or not the option defined by the parameter name (which can be either the short or the long name) is mandatory. setRequired(parser, optionName [, required]) Include Headers seqan/arg_parse.h Parameters
parser | The ArgumentParser object. Types: ArgumentParser
optionName | The identifier of the command line option.
required | Remarks: The default value is true.
Remarks Note that the empty string is, at least for string options, also a valid string. Hence setting an option to required does not guarantee that the returned string is not empty. Member of ArgumentParser SeqAn - Sequence Analysis Library - www.seqan.de

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