addPositionalN<T> method
Arg<T?>
addPositionalN<T>(
- String name, {
- String? description,
- UsageGroup? usageGroup,
- required ValueParser<
T> parser, - ValuePrinter<
T?> ? printer, - 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);