required
fun <EachT, ValueT> NullableOption<EachT, ValueT>.required(): OptionWithValues<EachT, EachT, ValueT>
If the option is not called on the command line (and is not set in an envvar), throw a MissingOption.
This must be applied after all other transforms.
Example:
val opt: Pair<Int, Int> by option().int().pair().required()Content copied to clipboard