addPositionalN<T> method

Arg<T?> addPositionalN<T>(
  1. String name, {
  2. String? description,
  3. UsageGroup? usageGroup,
  4. required ValueParser<T> parser,
  5. ValuePrinter<T?>? printer,
  6. bool? noOptionsFollowing,
})

Shorthand for addPositional with a default value of null.

Implementation

Arg<T?> addPositionalN<T>(String name,
        {String? description,
        UsageGroup? usageGroup,
        required ValueParser<T> parser,
        ValuePrinter<T?>? printer,
        bool? noOptionsFollowing}) =>
    addPositional(name,
        description: description,
        usageGroup: usageGroup,
        requires: Requires.optional(null),
        parser: parser,
        printer: printer,
        noOptionsFollowing: noOptionsFollowing);