addOptionN<T> method
Arg<T?>
addOptionN<T>(
- String name, {
- String? description,
- UsageGroup? usageGroup,
- String? valueDescription,
- String? short,
- required ValueParser<
T> parser, - ValuePrinter<
T> ? printer,
Shorthand for addOption with a default value of null
.
Implementation
Arg<T?> addOptionN<T>(String name,
{String? description,
UsageGroup? usageGroup,
String? valueDescription,
String? short,
required ValueParser<T> parser,
ValuePrinter<T>? printer}) =>
addOption(name,
description: description,
valueDescription: valueDescription,
usageGroup: usageGroup,
short: short,
defaultValue: null,
parser: parser);