Struct Opt

pub struct Opt<'a> { /* private fields */ }

A command line option.

Implementations

impl<'a> Opt<'a>

pub fn desc<'b: 'a>(&mut self, desc: &'b str) -> &mut Self

Set the description string of this option.

pub fn varname(&mut self, varname: &str) -> &mut Self

Set long or short name from the given variable name.

pub fn required(&mut self, required: bool) -> &mut Self

Mark this option as required.

pub fn long(&mut self, long: &str) -> &mut Self

Set the long option of this option.

pub fn short(&mut self, short: char) -> &mut Self

Set the short option of this option.

pub fn name(&mut self, name: &str) -> &mut Self

Set the name of the option’s argument.

pub fn multi(&mut self, multi: bool) -> &mut Self

Set whether this is a multi-argument option.